1

HAN DBOOKor’ TUZ

92-INCH B.L~ GUNS,MARKS ~X, X. AND X~.

\LAND_SERVICE.)

1906.

[All 1ligl~(sReserved.40

w.O.142

I[ANDBOO

OF TII1~

92-INCH B.L (*11Marks IX, X, aiid Xv.

LAND SERVICE.

LONDONPRINTED FOR 1115 MAJEsTY’SSTATIONERY oi~’ir’ro;

BY IIARIIISON AND SONS,ST. MARTIN’S LANE,rRI~ThUS IN O1tDINA1~YTO ItIS MAJESTY.

And t~ho purclia~ed,eitherdirectly orthroughanyBookseller1

fromWYMAN AND SONS, LTD., FETTEn LA1~E,E.C.; or

OLIVER AND BOYD, Ermrn~riu1u;orE. PONSONBY,110, G~o~STREET,DUBUN.

- Price One Shilling and Sixpence.

1906. ,

,;.~ -/,~‘\

:r’~I

CONTENTS.

PAGE.

Guns .. ,. .. .. .. .. .. .. 3to5BroochMechanism,Mark IX Gun.. .. .. .. .. SObturationandFiiing Mechanism,Mark IX Gun .. .. .. 6BreechMechanism,Marks X andX” Guns .. .. .. .. 7Obturation,Marks X and X~’Guns .. .. .. .. 8FiringMechanism,Marks X andXV Guns .. .. .. .. 9WeightsandDimensionsof ObturatingPads .. .. .. 10RemovingandreplacingBreechMechanisms .. .. .. 11 to 13Exanmirumtionof BreechMechanisms .. .. .. .. 13Box, sparoparts.. .. .. .. .. .. .. 14Appurtenances(sights) .. .. .. .. .. .. 14ObturatingPadBoxes .. .. .. .. .. .. 15Implements .. .. .. .. .. .. .. 16SideArms .. .. .. .. .. ,. .. 18Instructionsfor Care andPreservationof Guns ,, .. .. 19Rifle, Aiming .. .. .. .. .. .. .. 19 to 22Carriages .. .. .. .. .. .. .. 22 to 50Instructionsfor Care and.I’reservationof Carriages .. .. .. 50 to 54Instructionsfor Use,Care, andPreservationof Electric Firing Gear .. 54I’umps, runningback, Portable .. .. .. .. .. 56

Air or Liquid .. .. .. .. ., .. 57Air, Double .. .. .. .. .. .. 59testingCompressedAlr Reservoirs .. .. .. .. 60

Reservoirs,CompressedAir .. .. .. ., .. 61Separator .. .. .. .. .. .. .. 63Gauges,l’rcssuro.. .. ., .. .. .. .. 63Gauge,Pressure,DeadWeight testing .. .. .. .. 64 to 68Cartridges .. ., .. .. .. .. .. 68 to 71l’rojcctiles ,. ., .. .. .. .. .. 72 to 75Extractors,Drill Shell .. .. .. .. .. .. 75Fixing Plugsand Fuzes,&e. . . .. . . . . . . 76Fuzes ,, .. .. .. .. .. .. .. 76 to 83Tubes .. .. .. .. .. ,. .. ,. 84 to 86Ibuige Tables .. .. .. .. .. .. 87 to 122Drill .. .. .. .. .. .. .. 123 to 138

PLATES.

Guns .. ..

BreechMechanismLocks .. ..

Boxes,ObturatingParisExtractor,Tube,Special,box slide ARifle, aiming ..

Carriages ..

I’istol Grip, Mark III ..

Pumps,runningbackAir orLiquidAir, DoubletestingCompressedAir Resoryoirs

Connection,four-way, Air PumpReservoir, Cc’mpressedAirGauges,I’rcssuro.Gauge,Pressure,DeadWeight testingCartridges .. ..

Projectiles ..

Fuzes .. ..

Tubes .. ..

PLATES.

iandiiiii ,, ivv

viiviiiix

x—xxviixxviiixxix

xxx andxxxixxxii ,, xxxiii

xxxivxxxvxxxvi

• xxxviixxxviii

xxxix-xlivxlv—xlviiixlix—hiiiliv-4vii

Particulars of 9~2-inchGuns of earlier Marks, and their

HANDBOOK

05’ TIlE

MateeinlLength,totalWeightPreponderance

f diameterBore 4 length

lcapaeity

r diameterChamber length..

capacityIs’stem

I

twist

Rifling .~

lengthsI number

grooves~depthi{

L [width {Meansof rotation..VentingAngleofdeflectionfor driftRadiusof sightsFiring niechianismSystemof obturation

Imuzzlo velocityBallistic in fjot-sces.effects, muzzle energywilh .~ in foot-tonsfull penetration of

charge WI. at 1,000L ycis. in inches

Steel(wire construction)44525inches27 tonsNil*92 inches430~()inches32,426cubic inches.13 inches,largest..08 ,, smallest71215incises8,123 cubicinchesPolygroovo,plain section

Straightfrom breech endof rifling to 303585inchesfrom themuzzle,the remaining 303~585inches increasing from0 to 1 turn in 30 calibresatmuzzle

354685 incIses37 ..

straight, 008 inchtwist, 006 mdistraight, 062inchtwist, 0002inchDriving bandAxial3 degrees87 inchesPercussionandelectricPadf 2,001= lOOlb.cliarge1 2,643 103J17,826= 100 ,,

118,410 = 103 ,,

275 =100,,f28.83 =1(3,,

Steel (wire construction).44235inches.28 tons.Ni].92 inches.42033inches.32,235cubicinches.13 inches,largest.102 inches,smallest.710 ,,

8,123cubic inches.Polygroove,modifiedplainsection.

‘~Straightfrom breechendof rifling to 303585incisesfrom themuzzle,

~. the remaining 303585incises increasing from0 to 1 turn in 30calibresJ atmuzzle.

3538inches.37.straight,008 inch.twist, 000 inch.straight,002 mdi.twist, 0002 mcli.Driving band.Axial.} No sightson gun.

Percussionand electric.Pad.2,613.

18,410.

28 -83.

Mountings, will be found in a separateHandbook.

92-INCH B.L. GUN,Marks IX, X, and XV.

(LAND SERVICE.)

[NoTF~.—T1sis1Tandboo1~is correctedup to March, lOOlL Any alterationswhich may be suggestedshould be forwarded to the UhiefInspector,RoyalArsenal, IlToOlacicli] ________________________

MAISK IX. Mark X and. XV.

{

I* Nod. 134, 135, and 110 guns have breech preponderance,all others have a

counterpoiseat the muzzle; in some casesthis is shrunkand screwedon, in othercasesit is formedsolid with the A tubein unujufacture.

(9389) A 2

4

MARK IX GUN.(Plate I.)

The gun is constructedof steel,and consistsof an A tube,withan innerA tube extendingfrom the seat of the obturator to themuzzle. The inner A tube is securedlongitudinally to theA tubeby meansof correspondingshouldersand a steelbreechbush,whichis screwedinto the A tube at tiso rear; the breechbush is alsopre-pared for (lie reception of (lie breechscrew. Successivelayers offiat steel wire are wound round a portion of the A tube,theendsbeing securedto steel rings provided for the purpose. B tube isshrunkround tho A tube immediately in front of thewire, extend-ing to tIre muzzle. Fitted over the exterior of the wire and over-lapping a portion of the B tube is a jacket securedlongitudinallyby meansof correspondingshoulderson the B tube,anda screwedsteelbush at the rear. A trunnion ming is screwedoveraportion oftheexteriorof the jacket.

Tire central portion of the chamberis cylindrical, with curvedslopesin front, and conedrear.

In future manufacturethe front endwill beconedto facilitate theramminghomeof theprojectile. This will also apply to existingguiis when passingthrough ordnancefactories for repair.

The exterior of the jacket is preparedwith scalingsfor thereceptionof the sighting and elevating band. Two metal bracketsarehixedto the trunnion ring for theforesights,andtwo steelbracketsfor securingthe tangentsight clamps,when in position on the gun,arc fitted to thesight ring.

A planefor clinomcter is preparedon (ho upper surfaceof thejacketat thebreech.

For breechmechanism,seepage5.

MARK X GUN.(PlateII.)

rfiii5

gunis constructed,of steel,and consistsof A and B tubes,a seriesof layersof steel wire, andjacket. In the interior of theAtube is an inner A tube,securedlongitudinally by meansof corre-sponding shoulders,and a steel breechbush,which is screwedinto(lie A tube at the rear; the breechbush is also preparedfor there-ceptionof the breech screw. Successivelayers of flat steel wire arewound round the A tube, the ends being securedby steel ringsprovidedfor thepurpose. The B tubeis fitted over the exteriorofthewire, extendingovernearly half the lengthof the gun from themuzzle. The jacketis fitted overthe exteriorof (lie wire in rear,anda portion of the B tube,andis securedlongitudinallyby correspondingshoulderson theB tube,andby a screwedsteelcollar overtile A tubaat the rear. The gunis without trunnions. Two projectionsroundthejacket,nearthebreech,anda keyform aseatingfor therearbandconnectingthegun to themounting; the keyis on theundersurfaceof the jacket,andisformedwhenmAiling to shapethefront projection.

The central portion of the chamberis cylindrical, reduced indiameterwith curved slopes in front, and curved at the rear. infuture manufacturethe front end will be coned to facilitate (horamming homeof the projectile. This will also apply to existinggunswhenpassingthroughOrdnanceFactoriesfor repair.

A plane for chinometerwas originally prepared on the uppersurfaceof the jacketat the rear, but is now cut in front of theswellon thejacket.

5

Sighting lines are formedon thehorizontal axis of thegun at thebreech,and on the horizontalandvertical axesat themuzzle,andinfuture manufactureaxis lines will be cut on the breechend.

A hole is provided in the left face of tire bronze end frameforloading tray steadypin.

For breech mechanism,seepage7.

MARK X~’ GUN.

Thereareonly two guns of this descriptionin (heservice. Thegun differs from Mark X in the construction,and consists of an Atube with an inner A tube, both extending(lie wholelength of tirebore, the A tubesforming the chase. Layers of flat wire overtheA tubesextendfrom (lie breechto a little more than half the lengthof (lie gun. Over the exterior of the wire is (lie jacket,having abreechboshscrewedinto it to take(lie breechscrew.

The breechmechanismis thesameas for theMark X gun.

BREECH MECHANISMS.

MARK IX GUN.

(Plate 111.)

Breech-closingMechanism,Controlled.

A bronze frame for the attachmentof themechanismis secured~ to (lie breechend of the gun by fixing screws.

The breechscrewis closedby a parallel screwhaving six per-~ (ions of the screw-threadremoved longitudinally so as to adniit of~,. (lie byeechbeing closed(when the breechscrewis pushedhome)by

the 12th of a turn.A bronze carrierrng for supporting(lie screw,whenwithdrawn

is hingedby abolt to (lie bronze frame. To (lie hinge bolt of tirecarrier ring is secureda worm wheel winch engageswith a wormand worm spindle fitted to tire lower part of tire frame. Tire lungebolt is also fitted with a bevel wheel and rack pinion, the fornrerengagingwith abevelwheelwith friction rolleron thecarrierring,andtIre latter with (ho rack on (lie breechscrew,in such a mannerthat,when the binge bolt is revolved in onedirection, tire friction rollerengageswith a roller path preparedfor its receptionin the endplateof thebreechscrew,and turns tire screwinto tire unlockedpositionthe rack pinion (lien engageswith tire rack on (lie breechscrew,andwithdraws tire hatter’, the whole being (lien swung round into tireloading position. Tire reverseaction takesplace when the hingebolt is revolved in (lie opposite direction. A catchis fitted on tirebreech mechanism frame engagingwith a ratchet wheel on tireworm spindle in such a manneras to retain (he carrier in the” open”or “loading” position.

In tire eventof accidentto thecontrolling gear, the breechscrewmay be withdrawn and swung round into (lie loading position byhand, a earn lever being providedfor this purpose. When thecamleveris not in usetire recessfor canslever is filled by apreservingblock.

Obftrration.The system of obturation consists of a circular pad with pro-

tecting discs fitting the mouth of tine chamber,placed betweentheheadof the axial ventand thebreechscrew.

For weightof obturators,seetable,page10.

Firing Mechanism.(Plate VI.)

The mechanismis so arrangedthat thegun cannotbefired untilthescrewis locked in the gun.

The gunis famishedwith an axial vent preparedat its outerendfor the slide box for lock.

To thehinge joint of (he carrier ring, and projectingthroughthesideof thebreechscrew, is fitted a contact bolt, winch is actuatedby meansof a earngroove in the rack pinion in sucha mannerthatwhen the breechis closedthe contact bolt is forced through therecessin the side of tire breechscrew, and makescontactwith thelower contactof theelectric lock. In openingthebreech,the firstmovementof tire rack pinion serves to withdraw the contactbolt clear of the breech screw, and thus admits of the latterbeinounlocked and~withdrawn. The contactbolt has fitted to itsinnerend an insulated,contact,rubbing with the lower contactof(he electric lock now used with wireless tubes; a length of M. 1electric cableis passedthrough the contactbolt and carrier ring;oneend is fitted andsolderedinto (lie above-mentionedcontact, theother cud being similarly securedto anouter insulatedconnecting

piece, with elbow piece for the attachmentof the electric firingcable; this connectingpieceis securedto tire right sideof the breech-mechanism frame by meansof a metal bracket (x, Plate III.) andscrews. The recessfor the cableof the contactbolt in the hingejoint of tire carrier-ringis enlargedat theouter end so as to admitof tine contact bolt being removed or replacedwithout making orbreaking any solderedjoint. A removablefilling pieceis fitted totire outer endof the recessarid securedby a fixing screw.

The foilowing locks areusedwith thegun:—OrdnanceB.L. 92-inch, wire, Marks VIII andIX.

Locks, electric,Mrirks P**, I~’~’*~,II~,andIII.Lock, percussion.

Electric Firing.—Theelectric locks (all of which areinterchange-able with Marks VIII and IX guns) are very similar. TheMark J~**and Mark 11* are theoriginal locks for the Mark VIIINaval Servicegun,but now fitted with wire-braidedcableinsteadofa leadwith coiledwire protectingcover, andnow furtiner broughtupto Mark III pattern,while Mark I***~ is theoriginal electriclockfor wired tubesMark IX gun,converted for usewith wirelesstubes,and further brought np to Mark III pattern.

Tine Mark III electric lock (.Plate VI) generally consistsof asteel frame (a) fitted at the upper end with an aetuatiinglever(b)with sleeve(c) by meansof which it is raised or lowered, thusadmitting tire insertionor withdrawalof the tube from the vent; anextractor(ci), and an insulatedcontact(e); and it is provided nearthe centre with an insulated alurnininrn crown metal connecting

prece,havrng at one end a steel centrepunch point (f), and con-nected at theotherend by aphosphorbronzebraidedwire cabletotheinsulatedcontactat the lower endof the lock.

The uppercontact is encasedin a steel cover, actuatedby a link

.7

fitted to the lock frame, which engageswith theearnportion of theactuatinglever, so arrangedthat, when tine lock is in position andtirelever depressed,the point of the contact is forced partially into (hohead of the V.S. tube and contact made. To keepthepunchup ~its work, a flat steel spring is fitted to the upperend of (lie lock-frame. Thefree end of the springis forked, and engageswith tireouter end of tine upper contact case, which is preparedfor itsreception.

rllre “punch” of theuppercontact is of such length as to admitof a mrsximum protrusionof ~09 of air inch,and the groovesin tirecontact case,and correspondiirgprojections on the actuating link,are arramngedto withdraw tine punchwithin tire face of tire firing-hole bushwhen theactuatinglever of the lock is raised.

Tire underside of the lock is provided with two serratedcutters,which grip theheadof the V.S, tubeamid ensurea cleansurface fortheearthreturn.

The lock is securedduring firing, by meansof acatchon thesleeveof the actuatinglever, which engageswith a projection on the boxslide when(lie lock is in tine firing position. To preventtire lock fromsliding out of tire slide box when (he actuatingleveris raised,a stopcatchis fitted, to theactuating Ievei’ which engageswith a stop on(lie lock frame.

When placing the lock in position or withdrawing it from tinegun, tine bronze nut of the stop catch must be presaedin so as t.oallow the actuatinglever to be raised beyond the stop on tine lockframe, asit is only with the lover in this position that the lock carsbe insertedor withdrawn.

PercussionFiring (Plate VI).—The percussionlock consistsofa steel frame furnished with an extractor, actuating lever, aindstop catch, generally similar to those of the electric lock. Thelock frame is fitted with a striker, main spring, trigger, andsafety plunger. The striker is cocked automatically winen tireactuating lever is raised, and maintained in the cocked positionby the trigger. The (rigger is furnished with a loop for theattachmentof the servico lanyard. The safety plunger which isfitted to the lower portion of the lock frameservesto ensurethirst (lievent sealing tube is not detonatedby (lie striker beforetheactu’st-ing lever is lowered. When the breechis closedandthe actuatinglever lowered, tire safetyplunger is automaticallywitlrdrawrr fromthe striker, which is then free to strike the ~en( sealingtube whentire (rigger is pulled.

MARKS X AND XV GUNS.(Plate IV.)

Breech-ClosingMechanism(“ Welin“ System).

The breech is closed by a parallel screw, which differs from tineordinaryinterrupted screw in having a larger amount of thread inproportion to its length by arrangingsegmentsat variousdiameters,the breechopening of tine gun beillg preparedin is correspondingmanner. Tho interruptionsin thegun arearrangedto accommodatetire segmentsof the screw of largestdiameter,thus, wheathescrewis unlocked, these segmentspass into the interruptions, aird tiresegments,next smaller in diameter, unlock into (Inc spaces leftvacant by the largerones.

Tine breechscrew is attachedto the carrier by meansof corre-sponding interrupted screw threads,aird by a steel vent passing

8

through thecentreof thebreechscrew. Tire venthasa mushroomheadat the innerend, behindwhich are placed tine obturating padandprotectingdiscs. The vent is retainedin position by meansof asleeve,spiral spring,collar andnut, in tIre carrier.

A manganesebronzecarrier for supportingthe breechscrew ishingedto amanganesebronzeframe on the gun by meansof a boltat the right side of tire breech. The carrier and breechscrew areopened and closed by meansof a breech mechanismlever (A),pinion, and link (B). The lever is retainedin the closedpositionby a ca(chfitted to theundersideof thecarrier.

Breechmechanismframes are now fitted with clamping nuts inthe upperandlower logs for securingthe ball bearing bushes,andcorrespondingscrrationsaremaderoundportionsof time ball bearingbushesso as to engagewith theclampingnuts.

Carriersnow made(and othersare altered as required) havearecessformedin theouter surfaceso as to admit of the electric andpercussionlock, “ E,” when fitted with the tripping piece, beingplacedin position in thegun.

Tire carrier is retainedwhen in the loading position by a catch‘which consistsof a steel plunger with spiral spring, fitted (o abracketwhich is attachedto the right sideof thegun at thebreech,tire roundedendof tire plungerengagesin tire recessof a hardsteelpiecewhich is fitted to (lie undersideof the carrier,near the hingejoint; apull oathe breechmechanismlever releasesthe catch. A.stopfor the breechscrewwhenunlockedis formedon theuppersideof thecarrier by meansof ahard steelpiecewhich is securedby twoscrews,so as to engagewith tine boss of the “link actuatingbreechscrew.”

Thereis aholein the left side of thebreechmechanismframeforsteadypin, andaplatefor usewith the “catch locking londing tray”is securedby screws.

Obturation.This is obtainedby meansof an asbestospad and protecting

discs, which fib into a coned seating in the gun, as previouslydescribed for the Mark IX gun, but which differ in the conedportions being made mere acute, the seatingin tire gun for tineirreception being arrangedat an angle of 13 degrees 14 minutes48~7secondswith tine axis.

Should the obturatorbe found not to fit theconeseatingin thegun correctly (and this can be ascertainedby covering tine seatinglightly with greaseandseeing that the obturatoris coveredall over,after thebreechhas beenclosed and openedagain),adjusting discsshould beaddedoneby one until the breechcloses a little tightlythroughthe obturatorbeing pressedforward into the seating. Toadmit of the adjusting discs being placed behind the obturator,aclearanceof about~-th of an inch is providedire thebreechfittingsto allow of the vent being moved forward,but the whole of thisclearancewould seldomberequired.

When theobturatorsrequireto be changed,care must be takenthat theprotectingdiscs issuedwith the pad areplaced in the gunwith it. A pad and its protecting discs must, in all cases,bereplacedtogether. For weights,sestable,page10.

When the temperatureof a pad in a steep conedobturator isprobablylessthan 50 degreesFahr.,andhalf chargesare aboutto beused,the pad should be thoroughly softenedby immersion in hot‘water, prior to thepracticebeingcommenced.

9

Firing Mechanism.Plate V.

The firing meclnannismis designedfor percussionfiring, and forelectric firing with wireless tubes,and is so arrangedthat tine guncannotbe fired beforetire breechis closed.

A slide box, (C), in which (ho electric and percussionlock slidesis s~curedto tire outerendof tIre steelvent(U), tire lock 1)0mgpushedinto a position over thevent by meansof an actriatimrg link in tirerearfaceof thecarrier,whentine breechscrewis locked in (lie gull.A safety slide fitted to tire lower side of (ire slide box serves topreventcontact,betweenthe needle of tire lock and tlre electric orpercussiontube in thevent, before tire breechis properlyclosed.

An extractorfor releasingtheventsealingtube from tire vent isfitted to tine slide box, and is actuatedautomaticallyby t!ie lock inopening the breech. Should the vent sealirrg tube be so tightlyjammed in the vent that the extractor in the glide box fails toremove it, the “extractor, tube, special, box slide, A” should beused. For description,seepage16.

In ftrture manufacturetIre “box slide, A,” will be modified soasto facilitate adjustmentof horizontal eccentricityin the gun lock,by arranging(lie closedendof the box slide, so as to form a stop forthe lock whenclosingthebreech.

Existing “boxes, slide, A,” when modified, will be describedits“Mark 1*,” and will be so stamped. New “boxes, slide, A,” willbe known as “Mark II.”

The electric and percussionlock “li” consistsof a steel framewith an insulatedsteel needle(E) which is actuatedby a mainspring.Tire sharp edgeon the faceof thee lock is now roundedoff, so as toprevent injury to tine head of the vent sealing tube in tire vent.For the purpose of percussion firing a cocking handle (F) isprovided,by meansof winch (lie needleis pulled into the cockedposition and retained by the trigger (G), which engageswith aprojection (H) on thesheath. The triggercnn be pulled from eitherside of thegun by thefiring arc (I).

For electric firing, the outer endof tire needleof the lock is incontactwith theelectric firing gear on the carriage(see page48),the spring contact of the“A” cable being securedin position bymeansof an elbowpiece (3), which screwson to thecockinghandle.A spring guidebolt (K) is providedon the lock, which engageswithtire actuatinglink in thecarrier.

A hook of bull metal, with spring washerandsecuringscrew,isfixed to tire carrier for supportingthe “A” cable.

Tine “frame, breech mechanism” is also prepared for tinereception of a “irook supporting cable“in orderto maintain inter-chamngeabihitywith Naval Service. Tire hole for the securingscrewwill be fitted with a plug of greasedtow.

ACTION or TUS MECIIANISM.To Close the Breeclr.—Turnthe breechmechanismlever from

right to left, which will causethecarrier’with breechscrewto swinginto theclosedposition. On continuing the motionof tine lever, thescrewis turnedinto the locked position by tine link actuatingbreechscrew,which is connectedto a stud on the rearfaceof thebreechscrew,(Inns formingacrank. When (lie screwis locked in the guntire last motion of thebreechmechanismlever forces (lie hock intoa centralposition overthe ventby meanisof the link actuatinglock.

To Openthe Brccclr.—This is theconverseof tire foregoing.

10

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11

REMOVING AND REPLACING BREECH MECHANISM.

Instructionsto be observedin removingand replacingthebreechmechanism. Care must be taken not to indent or damagethecomponents:a hammershouldneverbe usedunlesswith a piece ofwood or soft metalto transmit tine blow: heavyparts,which cannotbe lifted by hand,can be slung by solvagees,and tackle suspendedfrom tire mountingor from any other suitableerection.

The fittings should be examinedfrequentlyas to their conditionin respectto wear,in order that, if necessary,special examinationmay be called for.

OIwEne or REMOVING TIlE MECHANISM.

1 Lock.2 Box, slide.3 Obturator.4 Endplateof breechscrew.5 Rack.

Mark IX Gun .. 6 Breechscrew.7 Bevel wheelwith crank.8 Worm whneel.9 Carrierring with details.

10 Worm spindle.11 Coverwormwheel.

fi Lock andbox slide.2 Vent, axial andobturator.

Mark X andX~Guns .. ~ 3 Breechscrew.4 Link actuatinghock.

(~5Carrier.

Before removingthefollowing fittings, thebreechmust beopenedandtIre breechscrewswung into the loading position, exceptwhereotherwisestated.

Marh IX Grin.

Electric, or PercussionLoclc.—Pressup the sleeveof the actuatinglever clear of the catch on the lock frame, and raise the leveras far as it will go, at the sametime pressingthe milled head ofthestop catcln,andslide the lock out of theegroovesin thebox slidein an.upwarddirection, and withdraw.

Box, Slicle.-—Tarnthebox slide until it engageswith (lie stop onthe endplate,tire two portionsof tire box slide can (lien be separatedto theright rind left respectivelytill clearof the thrust collars on thevent,andwithdrawnto the rear.

Vent,Axial, and Obturator.—Unscrewtine nub from (ho vent to-gethierwith theobturator from the front end of tire breechscrew,the spiral spring andwashierbelongingto tine vent can (lien ho witin-drawnfrom the recessin (heendplateof the breechscrew.

12

End Plale.—Unserewthe set screw of tine cain lever hinge boltandwithdraw tire bolt, winen thepreservingblockfor camlever canbe removed. Take out the fixing screws of the end plate andremoveit,

llack.—To take out the rack, tire breechscrew must be pushedthrougirthe carrierring into tire breechof tire gun till the outerfaceof tire screw is almost flush with tire breech face of the gun, andturned(o (lie left (by meansof two of the fixing screwsfor (ire endplate,screwedinto opposite holesin the breechscrew and nserh ashandles)till theprojectingendof the rackcomesagainstthe s’cop ontire carrierring, when (lie rack can bewithdrawn by astraight pullto therear.

BreechScrew.—After(lie rack hasbeenwithdrawn,as previouslydescribed,tire breechscrew must be turned back to the unlockedposition in thegun andpulledbackthrough the carrier ring as farasit will go, the retainingclip in the carrier ring being pressedinby moansof apieceof wood so as to engagewith the groove in thebreechscrew, the carrier ring at tire sametime being held in tireclosed position. The breechscrew and carrier ring can then beswung into the loading position and the breechscrewwithdrawnfrom (he front of the carrier ring, the retainingclip beingheld clearof tine screwby meansof a screwdriverusedasa lever.

Bevel TV/reel with Orank.—Unscrcwthe set screw in the upperright side of (he hinge joint, and removethe securingscrew of thebevelwheel with crank, when thewheel canbewithdrawn.

Carrier .Ring.—Removethefixing screwof the coverworm wheelandswingthecoveropcu. Unscrewtine set screw in the bottomlugof theendframe. Removethepreservingscrewfrom the upperendof the carrier ring iringe bolt and screw in tire eye bolt. Lift thohinge bolt clear of tire wormwIned andwithdraw tire latter. Slingtire carrierring andwithdraw the hinge bolt, when thebevel wheel,rackpinion, andcontactbolt can be removedfrom the hinge joint.Withdraw thecarrier ring from tine end frame, taking care to catchtire roller framewith rollers and bearerwashers,which will fall outfrom theundersideof thehinge joint.

lVornr Spiudle.—lJnscrew(lie securingnut of the leverand with-draw(lie latter. Unscrewthe setscrewin thebracketandwithdrawtine worm spindle, the worm with the four washerscan then beremovedfrom theendframe.

Cover Worm lTheel.—Itemovctheaxis pin, winen thecover canbewithdrawn.

Marks X and XV Guns.

Lock andIlox Slide.—Drawback tire guidebolt of tire lock, (lionturn (lie lock and box slide througha quarter circle in an upwarddirection, andremoveseparatelyor together.

VentAxial and Obturator—Theaxial vent,with spring,nut,and.washer,and tine obturator, will be removedin tire usual way, the‘sleevewhich forms part of the axial vent being removedfrom tirerecessin (Ire carrier to the front.

BreechScrew.—Disconnecttine link actuatingbreechscrewfromlink pinion by removing the check screwandaxis pin, then turn tirebreechscrewon the carrier until the actuatinglink is clear of itsslob, andtakeoff the link. Pressthecatch retaining breechscrew

13

clearof (ho recessin the breechscrew,and turn (ho latter so as todisengagethe screwthreadson theinterior of the screwfrom thoseon thecarrier, andwithdraw the breechscrew. The catchretainingbreechscrewwill thenbe forcedout of its seatingby theaction. of itsspring.

Link ActuatingLock.—Unccrowthe bushof the guide bolt abouta quarterof an inch, drawback the guidebolt of thelink, andslidethe link from. its groovein thecarrier.

Carrier.—Shing this, as a preventative. Remove keep pin andnut from lower endof hinge bolt, andtire preservingscrewfrom thotop end, replacingthehatter by an eye bolt, by meansof which thehinge bolt is withdrawn. Releaseset screw, and unscrew upperball-bearingbush,and take out tire anti-friction balls. Releasesetscrew, and partly unscrew the lower hall~bcaringbush, when thecarrier can be withdrawn, completetine removal of (ho lower ball-bearingbushandanti-friction balls. Removekeeppin andnut frombreechmechanismleversandwithdraw the lever. Removekeeppinand nut from the link pinion stud, and withdraw tire link pinion.Unscrew the fixing screws of bracket catch retaining breechnieclianisralever, andremovethe bracket,removekeeppin and nut,andwithdraw catchandspiral spring throughmob in bracket.

OuDair OF REPLACING TIlE MECIIANISM.

The order in which the mechanismmaybe replacedwill be (horeverseof the foregoing. But, however, in the case of hinge boltshaving conedroller frame, careshould betaken to put the frameinposition asshown.in the sketchbelow; theanti-friction rollers beingenrbeddedin tallow or other fatty matter, which will servo to retainthem while assemblingtho frame, andafterwardsasalubricant.

When cranrining the breechfittings, caremust be taken to testtire concentricityof (he striker with the tube in tire vent. For this’purposea “gauge,striker,eccentricity” is provided,which is suitableto fit in the tubechamberof tire vent. In thehead of tire gauge isa removableplug upon which the position of the striker point isindicatedwhen thestriker is cocked,and releasedwith thegaugenit

rae.

,—TfliN 135ARIi~G CLATE.

NOTE.

14

position. If the indentmade by (Ire striker point in the gaugeisfound to be so much eccentricasto be likely to causemiss-fireswitheitherpercussionorelectricfiring, further examinatronshouidbemadeto ascertainthe portion of the mechanismin fault, andstepstakento have it repaired or exchanged. This gaugeis only issued toI.O.O.’s.

Box, SPARE PAInTS.

The box is niadeof deal, divided into seventeencompartments,and is intended to hold tiro sparesprings and other small partsbelongingto thegun.

APPURTENANCES, &c.

SmuTs.

TheMark 1X gun is sightedon both sides,the tangentsigirtsbeing fitted to a sight ring which is shrunk round the jacket andsecuredby asetscrew,and theforesightsinto bronzebracketswhnichrareattachedto (he trunnion ring of thegun by fixing screws.

The foresiglnts are of the drop pattern, rind consist of a pillar,with a small steel acorn point and a sighting blade to facihitatolaying, jacket,andsocket. Tine socketis permanentlyfixed in tinegun. Tire pillar locks into the socketwith a bayonet joint, andis secured from turning by a projection on the jacket, whichdrops into a recessin the socket when tire sight is in its trueposition. The sight cannotbe removedwithout first raising tImjacket andturning thepillar rounda quarterof acircle.

The sights are “left” and “right” respectively, and are sostamped,(he vertical edgeof thesightingbladebeingturnedinwardsin eacheasewhen thesights arein position in the gun.

The Mark I tangentsights are of steel,having bars triangular insection,with arackon the front facegearing with tire pinion of theautomaticclamp”B,” andgraduatedwith a degreescaleto 8 degrees,reading to 5 urinutes. The rear faces are fitted with nlutrrininrmcrown-metalrangestrips,graduatedto 10,000yards for a frill charge,with a muzzlevelocity of 2,601 ft.—sees. Thecross-headis providedwith a dcflectron leaf, having a sighting blade with IT-notch for“right” or “left” sightsrespectively,andis graduatedon the lowerside with a deflectionscale giving two degreesdeflection right andleft.

An indicating arrow is engravedon the lower side of the de-flection leaf to facilitaterendingthescale.

15

The Mark II tangentslght8 differ from Mark I in beingprovidedwith traversin~screws,and deflectionnuts having a quicker pitch.The sights aro”xnaderight and left for guns on Marks III and IV’barbettecarriagesrespectively,eachsight having two rangestrips,one for a full charge,and tire other for a threc~quartercharge,arrangedandgraduatedthus

rforMark III If nil corditecharge,10,000yds.,andM.V. 2,601 f.s.Mark I carriage 1.~ ,, ,, 8,000 ,, ,, 2,127

range i for Mark IV I’ full ,, ,, 10,200 ,, ,, 2,601 ,,

strrp~ ~_ carriage 1_~ ,, ,, 8,000 ,, ,, 2,127

(for Mark III I full compositecharge,10,800yds.,andM.V. 2,64’3 f.s.Markil I ‘ • 1) carriage r. ,, ,, 8,400 ,, ,, 2, 96 ,,range 1 for Mark IV f full ,, ,, 11,000 ,, ,, 2,613 ,,strrps L carriage ~h ,, ,, 8,500 ,, ,, 2,196

Marks X and Xv gunsarenot fitted for sights. For automaticandrocking bar sights,seepages45, and44, respectively.

OBTURATING PAD Boxes.

(Plate VII.)

Box, Obturating Pads, and Discs, B.T,., 9~2-inch. MarksVIII andIX guns. Mark Ill.

The box is of wood,thesides beingmadeof deal, endsandbottomof elm, top,battens,and internal fittings of mahogany. The sidesaredovetailedto the ends,and the bottomis securedby brassscrews.It molds threepadsand3 setsof discs.

The box is fitted with a falselid; a gun-metal bolt passesupthroughthebottom and both lids, eachlid is securedwith a fly nut,both nuts being on the before-mentionedbolt. Tire false hid thussecures (lie pad arid discs in the box (see also “ Regulations forMagazines,etc.”) by having tire fly nut screweddown upon it.

Roundthe top of tire box, underthe lid, sheetfelt is securedwithshellacandtacks,to niakea tight joint.

On top of the lid there are two metal plates,each having afolding-downhandlefor lifting purposes,securedby screws;thereisalso arecessto containa label of instructions.

Tire interior of the box is coated with paraffin wax, and (hoexterior is paintedlead colour.

For dimensions,seePlato VII.

Bor, Obturator, Steep-coned,B.L. 92-in., Marks X and X~Guns.

Tire box, Mark I, is of gunmetal; the (op hasa flangedsiroulder,to take the cover. A steel bolt passesup through the box, and agunmetalnut on the bolt screwsdown on to tire cover, thus com-pressingtine contents. The box holds an obturatorrind oneadjustingdisc; it is of tire form anddimensionsshownin PlateVII.

16

IMPlEMENTS.

Bit, vent,36-inch

Description.

squareend..Borer, tube,chamber { pointedend

i~xtrnrctor,tube,special,box, slide A..I eccentricity

Gauges,striker ~ protrusionNo. 3Ordnance,B.L.—.

learner,ininge boltBolt, eye ~ hingebolt, carrierring..

~worm, carrierringLever, extractorWrenches—

Breech mechanismlBi1]

Firing ,, ~

Nutvent ..

Ri,ners,vent,axial—Long ..

Short ..

Wreneir, studandscrew, No. 1

LandService.Marksof Gun for whichused.

IX, X andX~IX, X and.Xv.IX, X andXV.

X andX~.IX, X andX”.IX, X andXV.

X andX~Ix.Ix.IX.

IX.X andX”~X andXV.IX.X andXv.Ix.

For guns using corditeventprimers.

IX, XandXV.IX.

* Also nut ventfor Marks X andX’.

EXTRACTOR,TUBE, SPECIAL, BOX, SLTDE, “A” (MARK I).STEEL; B.L., 12-iucn,MARK 1X; 9’2.incii, MARES X AND X~~;6-nwit

MARKs VII ro VIII, AND B.L.C 5-INCH.

(Plate VIII.)This instrument generallyconsistsof a sheathor case (a) con-

taining an actuatingscrew(5), which screwsinto the handle(c), and.two extractingclips (d), which pivot on an axis pin (e) on the endof thescrew (b) ; it is for usewith gunshaving the“box slide, A”whreri tire tube is so tightly jammedin thevent that the extractorintire box slide fails to removeit.

The sheathis suitably shapedat the clip end to admit of itsbeinginsertedin (ho “box slide, A,” by beingmadesquarein sectionto prevent turning, and in having aflange (f) on two sidesto bearon thesidesof tine box slide.

The revolving cross-handle(c) is attachedto the sheathby tworivets (g); it actuatesthe screw (5), moving it in or out, accordingto tire direction(ho handleis turned, the joint headof the screwandclips being made squarein section to prevent their turning in thesheath. Tire outer ends of tire clips fit into correspondingrecessesin tire box slide; by turning thehandlea guidepin (h) (betweentheclips) causesthem to divergeon passingout of thesheathandoverthe “box slide, A” extractor. On turningthehandlein the oppositedirection the clips will hook on the jaws of the “box slide, A”extractor,which, with the tube,will be forcedout so that the tubemay be removedby hand.

17

OrniwANc1~,B.L., LEVER ExurAcro1~5This consistsof a steel rod, about9 inches in length,hravini~too

pieces at either end, which may be inserted in tire loop of (hoextractor to ivhricli tire lanyard is attached,the sides of (lie lockframe affording a fulcrum. It is intended for prising up theextractorof tire lock in tire event of it failing to withdraw tire tubewhen the larryarcl is pulled,andis only uscdwith guns whose locksareprovidedwith hinged extractors.

GAUGa, STc1l~cr:,Ecce~

- (Fur inspethiiy Oi-dnance Oflicere.)

This gauge is of brass,with a removablecopperplug, for testingeccentricity of striker inn guns rising P vent-sealing tubes. Tinegauge is similar in corrtoui~andexternal dimensionto the “ Tubes,vent sealing,electric, wireless“ (page84). A recessis formed intire outei~end of tire gauge for (ire receptionof a copper plug.Across (lie outer end of the gauge are engravedcross-linesat rightangles,one of tire lines being marked with tire maker’s initials ortrademark.

— Method qf Usiny tire Gauge.

Openthe brccclr rind insert the gniUge iii tire tube chamberof theveirt, carebeing taken to note theposition of (lie maker’s initials ortrade rirark on theouter cud of thegauge. The breechwill (iron beclosed,tire striker of tire gun lock cocked,and releasedby puliinrgthe trigger, when(lie indent of the pointof tire strikerin tIre copperplug of tire gaugewill denotetheamountanddirectionof eccentricityof tire striker. .

GAuGE; STRIKE~ PnorIWsIoN No. 3.

Tire gauge is madeof flat steel plate,and is for gaugingtireprotrusionof theupper contact punch,or firing pin of tire needleorstriker in electric or percussionlocks, for B.L. andB.L.C. guns,andthe needleor striker in 1.irrch Eiswick “A” and “B,” and 1-inch1~forrrsB.L. aiming rifles. It hassepar-atorecessesfor maximumandmirirmum gauging,and thedepthsof tire recessesareas follows

Maximum . .. .. ~O9inch.

Minimum . . . - ~ inch.

Iur~trnctiousfor. Useof Gauge.

Gun Locks.

Remove(lie lock from (lie grin and forcetheuppercontact,needle,or striker throughtue firing hole asfar- as it wiil go. Tiregaugewillthen be appliedto tinefront faceof tire leek.

A~urinyThfles.

i-melt Elswick “A.”—Remove tire breech block arid push tirestriker forward as far ut it will go. Tire gaugewill (henbe appliedto tire front face of thebreechblock.

(9389) 13

18

i-hick Eiswhrk “JJ.”—Open tire breeehand swing tire brec~hnscrewandcarrierinto theloadingposition; releasethe retaining catchof thebreechs~rewby hand; turn the breechscrew intb the lookedposition, and fold down the cam lever. The gauge ~s~iil then beapplied to the front faceof the breech screw. (In the ~cRseof theMark II i-iflo, thestrikermustbe in theuncockedposition.)

i-inch Morris B.L.—Open the breechof tho gun,and place theelectric or- percussionneedles,respectively,in position in the axialvent, andin tire caseof thepercussionneedle,fo~cetine needlethroughtire duthmy tube as far as it will go. Tire gaugewill then be appliedto tire front endof tire axial vent.

SIDE ARMS, &c.

L,S. Marks ‘1 Guns forDe~eription. whichused.

lJrushr,piasaba,borc, B-L. 02-inch,Mark It .. IX, X and.X”t.]Jruslr, rammer,rind ~porrge,B.L. tJ2-incii chamber:{ X rind X~andIX on Mark

IY mountipg.Lan4No. 1 (~Itrr~k X on Mark III mounting.Land, No. 2 (Tilark I) .. .. IExtractor,cartridge,B.L. 10-inchto 7 .5.in~h;MarkI. IX to X~.

Extractors,drill shell f No. 2 .. .. I IX toX~exceptIX on Mark~ III carriage.(see also page7~) 1 No. 3 .. ., IX on Mark III carriage.Lanyards,friction t.rrbe, garrison,No. 3 .. .. IX to X~.

$tayes Jead, No. 8, Mark TI .. .. {All marksfor lengtheningbrushstave.lintermediate,B.L., 02-inch .. .. IX to Xv~

Brush,pr~asatcu.—Tiiebrush is used for cleaning thio~bore of thegun,in con,~unc~ionwith a spongecloth or pieceof canvastied on thehead.

Tire headis of elm,having piasabatuftssecuredinto it by pitch or-marineglue,

Thestaveis of ash, andis securedin (lie headby a copperrivet.It is fitted with ametal socket-joint,whichconsistsof ametal plugfixed to thestaveend, anda metalcylinder fixed to tire brushstave;theplug is inserted in the cylinder, and securedin position by athumb screwfitted to thecylinder. Total length,with stave,28 feet2~inches.

Brush,ranrrncr, curd sponge.~—Theheadwin ich forms the rammerandspongeis made of elm, which is protectedin front bya brassringsecuredby brassscrews;thepartin front of the brushis coveredwithfleecy huosiei-y,wiricir is securedby copper tacks and the brassring.The brush portion is mad~of beechor birch in two parts,one partfornring tire brushi and the other a packing ring. The tufts ofbristles aresecuredin position by brasswire winch is housedand.securedin suitablegrooves; the brush i5 retainedin positionon tireheadagainstashoulderby anundercut,and by an angle1copperringandscrews. Tire stave,which is of ash, is securedin the head.by acopperrivet. A brassbossIreadscrewis insertedin the stave37 inches

19

from tire fronit fucoof tire rannmerto denote winemr the projectile isrammedIronic. Tine length of (ho stavefor theMark IX gun on theI~fark III mounting is 18 feet 6 irrcheS (over, all), and that for tiroMrrrksX andX”. guns,arid (lie Mark IX on theMark IV mountingis15 feet 6 inches(overall).

Ertraclors.—--Tlro cartridgeextractor is a copper hook, ~vhiicir issecuredin awoodstave. Tire total herrgtii is 6 feet. For drill shellextractors,seepage75.

Lanijards, friction tube, garrison, No. 3., is of wlrite line, tarred,with toggle andloop, andis usedwith tire 9’2 inch guns on barbeticcarriages. Length 8 feet8 inches.

Staves.—Tlreend stave, No. 8, Mark II, for the ~asaba brush(Mark II) is of asln, fitted with a metal plug to suit the socket-joint on tire brnsurstave. Thelerrgth is 16 feet.~

Tire intermediatestaveis for lengtheningtine piasababrushstave,It is of ash,and is fitted at oneonrd with a metal plug, and at theother with a metal cylinder to suit the brush staveand end stave.The leungtlr is 11 feet 6 inches.

CARE AND I’RESERVATION OF ORDNANCE ANDTHEIR FITTINGS, ANt) AIMING RIFLES.

Bee “ Regulationsfor Magazines, and tire Preservation of ArtilleryMateriel.”

1tEt~1I4E, AIMING, 1-INCH, ELSWICK “13.” (MARK I).

(Plate IX).

Tins apparatus,’which is arranged for electric firing only,contains its own firing meclranism (the breech meciranismof th~grin is not usedwithr it), arid is for rise in tire I~1arksIX to Xv gums.A completesetconsistsof (ire following parts

Rifle, aiminrg, i-inch, Elswiek, “B,” B.L., 92 hrrelr,Marks VIII and IX guns (Mark I).

,, X and X~ ,, ( ,, )Barrel, 1-inch . . . . Steel.Carrier . . . . . . Steel,withhringepin, anrd keep

pin; coverplate with fixingscrews; arid breech screwi.etaining catch with spiralsprung.

Discs, adjustingbarrel:— Steel.~O1inch thick.0O5 inch thick.

Elbow piece- . . . , Gunmetal,(9389) II 2

20

1~’ramesadj~sting—

Front, B.L., 9’2 inch,Marks V[II and IX1 Alumhriuni with gun-metal

guns ~ bosh, three fixing screws,- MarksX andX~gunsJ andset screw.

Rear,B.L., 92 mcli,Marks VIII and IX~i

guns(Markslandll)t Steel,MarksX andXV guns

(Marks I and1I)tItin~breech . . . . . . Steel,with retaining catch ill

two parts, with keep pinandspiral spring;extractor

- with axis.pin,and keeppin.Screwbreech.. .. .. Steel, with cam lever, hinge

pin, and keeppin, case,andsotscrew.

Sleeve,withdrawingstriker.. Steel.Sti-iker .. .. . . Steel, consistingof needle nil

two parts with keepscrew,firing pin, and nut; insn-hatingbosh ; two washerssheathwith nut and mainspring.

Irrrplernents used.

Rifle, aiming, 1-inch, Elswick, “ B.”Extractor, cartridge~ Steel

irand ..

Tommy .. .. Steel.Wrenches:— Steel.

“A”.. .. .. For breech screw case, andsmall sciewS.

B “.. . . . . For adjusting fr-ames anti nil- - nuts.

Wrench,rearframe1-inch,1 Steel; for usewitir romeframesElswick “B” aiming > having continuous threadrifle, Mark I .. .. J without handlesonly,

Rifle, aiming, 1-inch—Brnslr, cleaning . .Without rod.Rod, cleaning.. .. Wood.

The 1-inch barrel is clrnrmljerecl and rifled on the Henryprinciple. It is preparedon theexteriorat tirerear’, with interruptedthrust collarsfor the receptionof tire breechring; the latter, wInchis preparedfor the reception of tire breech screw, is secured inposition on thebarrelby means of a spring catcin,amid is providedwith Jugsfor theattachmentof tine breechmechanismof the aimingrifle. It is alsofitted. with a safetystop to preventthebreechscrewfrom beingcloseduntil thr~breechnag hasbeenlocked in positionr

t Mark It frameshavea continuousthread for’ screwing into tire breeciropeirinig of tine grrrr, they are of ahiglrtcnedpattern,andarewithout irandles.

21

on Lhi~barrel, An extractor, which cirgagcswith tire headof tIrecartridgein therifle, is pivoted in thebreechring in such a mariner-,tirat winenr tire breech is opened and (lie carrier swung into tireloading position,thecartridge is automaticallyreleased.

Tire breechis closedby a parallelscrew having two interruptionscorrespondingwith tine interior of’ the rear portion of the breechring and is supported,when withrdrawnn,by a carrier hinged to tirebreechring. Tire screwis attachedto tine cari’iee by screw threadson the rearend, whricln cngngo withn correspondingscrew threadsontire carrier, andis workedby meansof a camlever.

Fitted to (-ire outer faceof tire breechscrewis a caseenclosing amain spring througirtire centre of which the striker passes. Tirestriker is provided with an insulated needle, one end of winch

pro.lects thu-oughi time firing mole of tine breecir screw, and makescontact with thic primer of (lie cartridge. Tire outer end of theneedle is preparedfor tine reception of (ire contact on the electriccablefrom tire firing battery,andis securedby nuts in the samewayus is shownfor tire needleof tine “ E “hock.

An elbowpiece is providedfor the attacinmentof tine cable; theouter’ endof this elbow piece,in presentmanufacture,has~t groovefor (lie reception of a projectionon tire cable connectionfox’ rnavaiservice.

To preventtIre rifle being fired before tire screw is locked, andfine cain leverlowered,a withdrawing sleeveis fitted overaportionofthe spring case,and attncbed to the rear end of tire striker. Aprojectionon one sideof the sleeveengageswith tire camportion ofthelever’ in sucha manner,that tire first nnovemnentof tire lever miopeningthe breecin,automaticallywithdraws tire striker within thefaceof the breechscrew. The striker is autonratienilyreleasedwirenrlire screwis turnedinto the lockedposition,andthecamleverfoldedforward, -

Steel discs areprovided for adjusting tho i.inieir barrel, and rearadjustingframe, wheir necessary.

Method of Fitting and U~i-ugtire Apparatus.

Tine front adjusting fiame is sci-ewedoverthe barreland securedby menusof tine setscrew.

Tire barrelwith frameandcylinder should thenbe placedin tirebreech openingof tire gun, tine part of the framemarked “TOPbeinguppermost,tine conedportion of the framefitting tire obturatorseatingof tine gun. The i-earadjusting frameis (-lion placedovertherearendof tire barrel, pusinedinto the breechopening,as far as itwill go, andturnedso as to engagewith tine screw threadsof (hobreechopening. Theframe should be jammedtighrtly into positionin tire brceeii of the gun by meansof the tommy, applied in one oftire moles in the frame, and used as a lever. When correctlyassembledthe hole for tire tommy should be to the left of up for theMark IX gun, andto tire right of up for tine Marks X andX~ guns.

In the event of tire i-ear adjusting frame screwing beyond theposition mentioned. above, t-hin steel discs are provided, to beinsertedover the rear end of the barrel as may be necessary,theframebeingtemporarilyremovedfor this purpose.

The bi-eeelr ring with carrier and breech screw in tire openposition, wiih then be placed over tine rear end of the barrel, andrevolvedone fourth of a turn, ir~such a d~rectionas will ndmit ~f

~22

tire retainingcatcir in the broochring engagingwith (lie necessintire barrel for its reception. Indicator lines are engravedon thebreechring and tire rear adjusting frame, with instructions tofacilitate assembling.

Caremust be-taken whnon removing (be breech ring from tinebarrelto acethat tire breech screwarid carrier of the rifle mrre alwaysin tire open position, and tire extractor clear of tire recessfor itsreceptionun tine barrel.

Elevation is obtainedby meansof tire gun or carriagesights,and anyerror in line can be correctedby iis~ngthe deflectionscale.

- Care end P-reservation.All actionsandpartsof tire rifle shouldbekeptperfectlyclean amid

oiled, soas to keep them inn good working order and prevent rust.No euttirmg n-natoriai,sucir asemerydour, is to beusedfor cleaning.

Aninzun~tionrrsed.

Cartridge, aiming rifle, 1.inch, electric. For description, seepage71.

CARRIAGE, GARRISON, BARBETTE, B.L., 92 INCH,

- MARK IlL

- (PlatesX to XIII.)

Tins mountingis counstrmictodto fire “en barbette”overa G~-feet

imarapet. It allows a recoil of 3~-feet, and generally consists ofcarriage and slide with hydraulic buffers,sighting platforms,gearselevating, traversing,elevationindicator, and loading; roller ring;electric fininggear,pedestal,hoidfast, racer,andtraversingare.

To mount tire gun, &c., seepage51. Woiglnts, &e., seep. 23.

Carriage.Tine carriageconsistso~two east-steelbrackets(a), eachiraving

an openingfor the receptionof anhydraulicbuffer. Thebracketsaregroovedon timo tinderside,and lined witir manganesebronzewimere

- they bear againstthe slide. Clips are bolted to eachsidç of therecessto engagewith theupperflangesof theslide winen thecarriageis mounted. Trunnionbearingsareformedin the uppersides of thobrackets,in which (ho gun is securedby sliding metal crrpsquares,with keys. A bracket(b) is formedon each sideundertire trunnioribearings,to receivethe nuts in which work the adjustingscrews(c)of tire hail bearings. -

Ball Bearings.—Tiroscare intended to decreasethe friction inelevating; thneyarc fitted on tine outsideof eachtrurrnion and car-riage bracket. A false trunnion is screwedinto tine end of eachtrunnion of tire gun,part of the falsetrunnion s octagonal-shapedtotaketime bali bearings,which consistof an innerandouterring, fittedvertically over each otincr, each having a groove,so that wlrcn - inposition they form a path for’ the hardenedstcel bails; -time ballbearingsurfacesof theserinngs arethin hardsteel rings let into (Iremain rings; tine inner ring fit-s oyem’ tIre octagonof thefalsetruninion,

‘23

C0

a)

CCl

Va)

bO..~

0a)bO 0ca

a)

-

;~.~

aV

a,

•0‘II

‘1’

-1~nCl -~

- an ~0 ,-, a-n I..

U2

-e~Q

a — ‘-4_4 -~

I~0 ‘0 ~

-~ an an— c-n ,~

‘0— ,-4 —

Cl

an‘—4 F>— — ,_

.~ ‘r-~-~a)

a) —bIJ ~

bO a)

Cl

a)

Q

‘2-I

nird to prevent tire bearingsfalJirng off it, a screwpassestinrougir aInn’ on the outer’ rings andinto tire carriagebrackets. The bearingsmnn’~adjustedby avertical screw and nut, supportedin the bracket(b) stout discspringsareplacedon tire screw,which then fib into asocketformed err tire outer ring of tire bearings. Wiren the gun iselevated or depressedtire inner’ ring and b~nllsrevolve together.When tire gunis fired tire disc springsare compressed,unit the guntrannnionstakeaheavingin (Ire trunniomr iroles,aft-erwinch tine springsexpand,when tire weight of tire gun frills on tire ball bearirngs.

To Adjust the Bearings—Turntire adjustingscrewin (lie rcquii’~nldirection,andat thesametime movethe elovnttirng gearby tire lmanul-wheelsuntil tire gearworkseasily, (men secureby tire setscrews.

Hi,draulie Dn~’trs.

The buffer’s rime in tensionand designedto give an api)roxunratelyconstantpressureduringrecoil.

Tire cylindersareof steel,andplaced in the openingsin tire car-riagebracketsfrom tire roar, securedby a projectionon the rearofeach cylinder fitting into a groove in the opening,and. a metal ringscrewed on tine front of tire cylinders lras a bearing against tinecarriagebracket openinng. A metal stuffing bo~is securedinto tinefront of tire cyhinder; a leathrcrpacking is placedin tine stuffingbox,and is kept iii position by an inner packing gland, (Ire latter isrecessedto take ametal ring and cotton packing,screwedup by airoutermetal gland. Eachcylinder hasa metalvalve-key or equalis-inrg strip fitted alongthe inside to fit tire port of the piston ; thereis afilling mole on top nearthe rear, winch is closedby a screwplug,and in front of this hole on the inside of the cylinder is a smallgroovewhicir admits of anyair which mayhaveaccumulatedin thecylinder to escapeover thepiston; a draw-off valve is providedontire outsideneartine front, which i-s ciosed by a screwplug; andtirecylinders are connectedby a stool pipe (having a metalnozzle andcouplingat eachend) nearthe front, so that eachnmay havean equalquantity of fluid.

The pistonandrod areof steel,a manganesebronzering is fittedm-onnnd the piston to preventscoring; a port for thevalve key anndpassageof tire oil is cutthrough the piston. A hole is boredin therearendof time piston rod for the controlling ram. Tho front endsofthepiston rods arc connectedby nuts to cast.st-eehbracketsboltedon tire front of each girder of tire slide,

The rear of the buffer is closedby a metal cap screwed mite it,anti tine controlling rain with adjustableplug is bolted in the cap.Tins controhlnngram is.of mangamnesebronze; it is hollow, anda smallhole is boredthroughif neartine rear endfor the liquid to escapeasthe carriageruns up; tire sizeof tire centralmole in tine rani earn horegulatedby asmall screwvalve fitted to theendof tire rn-in,

For contentsof buffers,seepage51.Actr-on.—Botir buffers arefilled with oil, andon recoil thecylinders

aredrawn off the pistonrods,the oil passinn’ from front to rear ofthe piston, through the port; the eqniauisin~gstrip in the cylinderfits into tire port of tire piston,and so givesa uniform recoil. Tineslide hras sufficient slopeto enablethe carriageto run up after-recoii,the controlling ram preventingit rimming up too viohontiy.

NOTE.—For running baci~at ~rihl, &e., a pump is used; fordcscrnptron,seepage56.

Elevating Gear.Tire elevatinggear is fitted on tire left side. The arc is sceureni

to tine elevatingbandon thegun, andgearswith an arc pinionn on ashriftwinch passestirrougintine bracketof tine carriage; this shaftinnsa worm wired on its outer end, driven by a vertical worm shaft,hravimng a bevel pinion on its lower end,gearing witin unotirer bevelpirriomr (the sinaft and pinlions are supportedby a br-acket fixed totine carriage) sliding on alongitudinal slnaft, revolved by Inuring afeatherSfitting into in featlierwayontine shaft. Tire longitudinal sinaftis supported,in front, rear, and centre,en theside of tire slide; andit is actuatedby further wheelsand siraftsnird baird wheel (Z) innfront, and(Z’) on tine sglnting 1)iatformn, us required,theformer heinngquick motion gearandtire latter slow.

Slide.The slide consists of two built up girder sides(ti), forrmned of

platesa-ndanglo steel riveted together,connectedby threeti-amrsonnsarid a centre bottom plate, rind also by two box-slraped transoms(e), onto underthe front of tine slide, and tine othner- undertire near,arid tineseare connectedby two semi-circularpiecesof angie steel,one each side. The slide is now stremmgthncrnedby meansof threesteelstaysat each side.

Tine uppern-oilerpath (f) in two segnnentsis fixed to tine umrderside of the box-transoms. A cast-steelbracket(q) is bolted to timefront of each gin-der, andhasa imig formederr tire nipperside for tineattachmentof thepiston rodsof the hydraulicbuffers. Tire slide isfitted witlm part of tine elevatinggear;traversinggear;liolding-dowmnclips ; sightinng gear; ioading geai’; two laying phatfor’nns, withladder-s; arid a slniehd. Tire slide hasaslopeof 9 degrees.

Travcrsinng Gear.- Tire slide is supportedandtraversederr a livc.rohler ring, wlnieirconsistsof two concentricsteel rings, connectedby collar’ rivets, andfurnishedwitif metal bushedholes for tire axles, the latter beingsecuredin the rings; the i-oiler ring carries 16 “Rollers, carriage,No. 18” (h) of steel,metalbushed,flangedon both sides,amid conedto suit tine pivot. Tine slide is preventedfrom lifting by a holding-down clip casing(O~front rind rear,which Irook undera clip ringformed on the racer. Tire traversinggear can 1)0 won-ked by tlnrecinand wheels,two on tine sighting platform in rear, and one on tireleft side in-i front; the front andrearmotions areusedseparately,asrequired, tine front gearbeing quick motion andtine n-car slow.

Tire gear consistsof atrain of wheels rind shafts,motion beinggiven to a vertical shaft at tine fi’ont of tine slide, on whicir is ri

pinion gearingwith a rackroundthe outer edgeof tire racer.

Sighting Gear.

Automatic Sights (Plate XIII).—Thnis gear is on the left sideof tire mounting, rind is supportedon tine side of the carriage by“Bracket, sliding, siglmfinggear” (A), andon tire slide by “Bracket,supporting siglnt-, left” (B). The frame (C) carrying the sights iselevatedor depressedby tire action of f-Ire cam roller upon the earn(K) through a system of crank gear,madeup of tire cam bracket(B), camroller lever (E), link for earnroller lever (F), squaresimaft(G), squareshrift iey~r(II), fror~tconnectingroil (1), rind trunnion

26

stud lever (.T) ; the latter is fixed to tire gun trn-unirionr, arid soactuatestire gear. Tire roller is kept -to its work by the spiralsprimrg and spindle (L); tine camis alsokept up to tire roller by tireretaining clip (M), which is fixed to (ire frame, and wirose bentpoint clips the flange of tine cam. Oneendof the cam is attached(o its bracket~nd adjustedby mr eccentric lever (N) in conrrcc’tionwith a graduated arc (0), tire other’ cud of tine earn is attaeincd totire bracketby a screw working in an adjusting i-rut (P), whoseframealsocarrie~apackingpiece,which canbe reducedto give finaladjustment. Thereis a separatecamfor tire full and* charges,andthesecamsarcsubstitutedby onecut to time rangelimit of tire 1-inchaiming rifle when required, so as to afford increasedpractice inlaying witir thesesights.

An error of day adjustmentdrum (Q), having a scaleof yards“over” and yards “sirort,” with reader, is fixed over tine sightframeby meansof a stirrup attachedto tire camroller lever.

A steelpillar is fitted into tire front,end of tine frame; it has afeatherto fit afeathrerwayin the frameto preventit turning, anditis securedin theframeby a clamping screw; tire top of tire pillaris recessedto takeaforesight, winchis thesameas for- tire Mark IVmounting,page35.

The rear end of the frarno is fitted similarly to the front endwith asteelpillar, witir cross-headmaying asliding leaf with readerfitted on its rearface, traversedby a brassscrewwith milled heads;a scaleplate graduatedto 2 degreesleft and right is fitted on therearfaceof thecross-head. -

Bar, Testing,Sighting Gear, Automat-icand Rocking Bar.—Thebar, which is of cast iron, is for use in testing,by meansof theService Clinometer,tire accuracyof tine telescopeholder’s on thesightbarsof automatic,reeking bar’, and combined automatic rindrocking-bai’ sights of B.L. and QF. carriages. Ibis formed atmcii end to fib the telescopeirolders, tho ~ntermediato portioniravimng apianofor tire chinometer. An arrow-headis engravedonthe r’ear en-ndwinch will be set to correspondwith a similar arrowheadon tire reartelescopeholder.

In future whentesting tire anglebetweentine gum andthe sigint-,tine clinometer readingswill be takenfrom the bar (fixed to tiremolders)insteadof from tine planeformedon therocking bar.

A telescopesigint (describedat page37), is also used with (irisgear; to use it tine before-mentionedfront and n-ear pillars areremovedfrom the frame, tire rearonebeing substitutedby apillarsupportingtelescope. Tins pillar inns across-mendwhich admits ofa horizontal movemomitof tIne carrier giving deflectionin in similarway to (Inn-nt of time auto-sigirtof Mark V barbettecarriage,page45.

An adjustableshoulderpiece is now appi~ovedfor- usewitir tinssight.

In tire adjustmemrtof auto-sights(he last motion of the elevatinggearmust be depression,except for any particulat- mourntmmng, withwhicin it is orderedthat (mo-lastmotion must be elevation,nnrd more-over thegun shouldbebalancedas if loaded.

RockingBar Sights—Thisgear is fitted on the right side of tirecarriage,andconsistsprincipallyof a sight frame. which is actuatedby asight framelever, a connectingrod, anda systemof crankgearssimilar to that for theautomaticsights. Tire front endof time sightframeis fitted wit-hr a fore sight,socketandpillar similar to tm-it cmitine auto-siglnt. Tire rear emrd is fitted with a toothed arc, which isben-cdto receivethecrossheadof the hind sight. Tire crosslmeadis

27

furnished with a mnotehed dellcetiorri-rut, traversing screw,am-id scaleplatewith pointer,and is graduatedfor 2 degreesdeflectionright andleft. Thewords “right “ amnd “heft” and directing arrows aro alsocmrgravedto clearly indicate tine direction. Tire sight frame lever ispivoted at one endto tine samehinge stud astine sight frame; tireotlncr end is provided witin a worm and worm wined withn pinion,whicln engageswith (Ire areon (mo sigint frame, andwith a drumforyard scalerings markedas follows

Cimrrrgc. M. V. Range.

Fnnhl Cordite composite..

,, ,, ..

..

..

. .-

.. -

..

.. -

2,613 f.s.2,196 ,,

1,632 ,,

14,000yards.12,000 ,,

8,000Fnnil cordite .. ..

* ,, .. ..

..

..

..

.. -

2,601 ,,

2,127 ,,

13,800 ,,

11,7001” aiming rifle .. .. .. 1,100 ,, 2,50)

When greateraccuracyis required,the cross head of the hindsight maybe removed,andapillar with a carrier for a sighting tele-scopeinsertedin its place.

For’ descriptionof telescopeseepage57.

Elerati-~omrIndicator Gear.

Tins gearis attaciredto the left side of tine mourrtinrg, convemniemitto the front elevatinghandwheel. A mnretal “arc segmemrt,upper,” isfitted on tire fronit end of tire automaticsiglrting shaft,securedby acollar andnut; it hasteetir to gearwitir a steel“arc segment,lower,”winicir works on-i a pin supportedin bearings,in-i tire front bracketoftire gear; a steelpointer is attachnedto tire latter sector,andworksalonga graduatedplate fixed to the top of the bracket. A strongspiralspring is woundroundthe axis pin of thesteelsector,oneendbeingsecuredto tire pin, tire otherto a stud on the sector; its useisto preventbacklash.

In iatesbmanufacturetire range graduationsare in-i separatescalesfor full and three-quartercharges,andan adjustablepoint-eris provided(seepage 43, Mark V carriage).

Loading Gear.

A forked lifting arm (j) is pivoted inside tire sides of tine slideat tire rear, and hasat its lower enda steelcarrier (h) with metalloadingtray; tire latter is free to slide on tinreerollers in thecarrier,so tlrat it can be pushedforward into tine gun to protect-tine threadsof the breechscrew, a spring which engagesa slob in tire traypreventsit beingpushedout of the carrier, tine spring is disengaged,when required, by means of a small cam lever. A steel arc (1)is attached to the -right arm of time fork into which gears a

oni (lie inner end of a spindle, supported iii bearings inna bracket, bolted to the right side of tire slide; on tire outerendof (iris spindle tirere is a spur whreei won’kedby a pinion amndwimmchr hmandle. A notch is cr-it in the inner side of tine arc to

28

fake a pawl to mold the nr’mnr in tine hoadimrg position, the pawl isfitted with a handle. To assistiii raising tire projectile, a cast-ironcounterweight (in) is suspendedby two steel cords, whiehr passover pulleys 0mm tire rear lrohdinng-downclip, and the upper end ofeach com’d is attacined to the upper arms of tire fork. Whenr tinebearerwith tray is vertical or in a position to m’eceivetire projectile,line cordspassundertire pivots of the lifting arm, and inave a ten-demncy to retain the arm down; but as soon astime gearis workedsu!flcienrtlv to bring the cords above tire pivots, tire- counterweight-dropsand helps mr raising tine weight. Tine gun is loaded at 15degreeselevation; a stop is fitted to tine side of time carriage toprevent tire arm, raising projectiles, fouling tire cross-shaftof tiretraversinggear-; a bracket with woodblock fitted to tine ar-rn formsastop for time breechin tirat position ; a stop (a) is also fitted to tinefront of tine aria to bring thecarrier’ vertical to receivetine projec-tile. Foot restsarefitted to eachsideof thearm, so (lint a man canberaisedmy tire geam- to placeatube in the von-it.

Shield.

- Tire shieldis of steel,with an operrinig in the fn’ornt to allow 15degreeselevationrind 10 degressdepressiciabeing given to tine guni;it hasalso two smalleropeningsin time roof for sighting purposes.Tine shmield rests upon, amrc~is attachedto stays,tine latter-beingboiledto time slide.

Gear’ firing, Electric.Tire gearfor this mountingwill be somewhatsimilar to that for

(hoI%Iark V carriage.The cableswill beartine following letter’s andnnrmben’s.Gearfiring electric—.-.Cables

Lenigtin.ft. inn.

A, No. 10 22 - 6 .. Winite; from gun to slidimngcontact,

B, No. 10 7 0 •. Purple; from slidingcoutactto safetyplug box.

0, No. 7 15 0 .. Red; fromrigh~tImandpistolgrip connectorto safetyplmn~box.

Ii, No. 6 14 0 . . Yehhor~; fm-our m’ight handpistol grip connector tobirthcry.

B, No. 7 10 0 ,. Black; from left Irand pistol- grip connector to safety

plug box.II, No. 10 0 0 •. Uncoloured;fi’omn left hand

pistol grip connector tobattery.

Tire following traversing nine, lroldfast, pedestal, racer, blastslnmelds, andcoverareusedwith this carriage

- Arc TRAVEIiStNO, No. 34.

Mark I: This arc is of brass,made in two ring sectihna, errclmlemng in leimgths; the degreefrgum’~~irc ~n~rayed upon theupper

29

seeL~on,und tire division and sub-divisions on the lower one. it issecnri’cdroundtheouter faceof racerbelow the clip ring; tire angleof traverseis indicatedby a pointer fixed to tire slide.

Radius5 feet 1~442inchnes.Weigirt 2 qrs. 4 lbs.

Iloiri-iFAST, CAumnm~ot~P1or~’I’Ar~,No. 4s.

Mark I Iroldfast is of steel amid consistsof 13 anchoringplates,anrd52 hohding.downboltswinch are9 feet 11 inches10mg,each havimnga cotter,tire bolts arenutted to tire bottom flange of tine pedestalmunciembeddedwith tiro amrelrorinigplatesinn comrcretc.

Weight 4 tons 10 cwt-.

PrrIEsLu., C.unInrAue, No. 4.

Mam’k I pedestal conrsists of two semicii-cnlnnr castings (0),PlateX, with two joint plates ammd bolts, securedtogetinerwhemrinnposition. It is f’ormed with a flange at tire bottom, wlnieh is boredfor (ho holdinig-down bolts of the inoidfnst,wlnile tire top is preparedfor tire racer.

Weigint 17 tons 17 cwt, :) qrs.

It&cEn, CArmnI~~a1~,GAnmsw~,BArnLn’I a, MAun~Ill, B.L.n 9’2-Iscit.

Mark I raceris of steel,bolted err the top of tire pedestalby boltson eacir sideof racer-, 00 on tine outside amid 16 cnn time inside of ii.A clip ring or flange is for’mrned onr tine outer face, to engage the]noldinmg-dowmrclips of tire carriage; amrd a traversingmack is bolted0mm abovetheclip flange.

Wc’iglnt 3 tons 0 ewt. 2 qrs. (complete).

- BL~1’ SmmmarMs. -

In easeswhereit is found desirableto protecttire gnnn layer f tourthe effectsof tine blast of adjacentgum or grins, shieldswill 1)0 fittedto the carriageasfollows

Tire sinieldswill be made of sheetir~nm,each sinield beinngsecuredin positionby meansof a stay to theplatform, nmrdby threewrougirtmom strapsand ~ inch bolts to finn Inanclrail in suitableplaces. ‘l’lreshieldswill be madeiocmdly,-as may be found necessary.

Covain, CAIUnIAUE, B.L., 9’2-iscnr, MAnna III, BAIthETm (Manna I).

- This is of waterproofedcanvas,formed to protect tine wor’kingpam-ts of tire carriage. It is secured inn positiomr by strapsandbuckling lmieces, ~vIniclrarestitcined

CARRIAGE, GARRISON, BARBETTE, EL., 92-INCH,MARK IV (FOiL MARK IX GUN).

(PlatesXIV to XVIII.) -

Tine mountingis constructedto fire mm en barbette” from an ele-vated emplacement. The gun recoils axially about3 feet6 inches,extreme3 feet 9 inclres, in asteelcradle (A), which is fitted witir anlnydranhicbuffer to control tire recoil, and an air chamberto returntine gun to the firing position; (he cradle is mountedon a steelcarriage(B), wiiiclr is revolved on a hive roller ring upon an ironpedestal(0).

For weights,&c., seetable,page23.‘1o mountthecarriage,gun, &c., seepage52.

ConnmcctingBand and Sliding Blccks.

(Plato XVIII.)

Tire gnu trttnrniionis fit into a pairof steel “ blocks, sliding,” whiclmare H section,coanrectenlin front by “band, connecting,gun andbuffer.” This bamnd is securedto tire gun inn front of tine trunnions,andto (lie sliding blocks by arectangularprojectiononr eitlrer side oftine band,fitting into a eorr’espondingrecessin tire blocks ; tire bandanrdblocks arefitted to one anotinerby eight steelscrewson eitherside. Tire lower’ part of the band hasa circular hole which passesover, andis fixed to thebuffer cylinder: thinsthe gun,band,slidingblocks,andbuffer cylinder recoil together.

A combinedgreasebox andbrusir has beenfitted to eachof thesliding blocks for use in cleaning am-id efficiently lubricating thesliding surfacesof thecradlein winch theblocks slide. The brushis attached to the rear of th~greasebox by meansof an angieplate,on which it can be adjusted (o give the necessarypressur’ofor cleaning the sliding surfaces. Tine brush slrould be frequentlycleaned to remove grit, &c. The lubricant used is a mixture ofi)haekleadand (aiiow, in theproportion of 14 lbs tallow to 1 lb. ofblackhead, -

Cradle.

(Plate XVIII.)

Tire cradleconsistsof two guidessecuredat encin endby a tram-soma bracket,tire front bracket carr’ies tine birifer piston rod trialtire reartire aireharirber. It is providedivith trunnions,having bailbearings as for tire Mark III mounting, tine adjusting screwsnmndsprimrgdiscs areon tire carriage;and an elevating arc is fixed oneach side of the cradle. Cover’s for the protection-i of tine trunmrionrbcarinngswill be madelocally as required. - - - -

Thjdramninc linifer, Air Chamber, ~‘r.

(Plate XVIII.)

- Theprincipalpartsof theseare:—Cyhinider(b), piston (c), pistonrod @1), with controlhing ram (1), air chamber(f), intensifier (g),andair pump (h). Tine cylinder, piston, and rod, are of steel ; (Ireair cinanmbei-,&e., of manganesebronze, - -

0

The buffer cyiirrdom’, wiricir foi’mirs alsotire mmli of tho air ehanrbon’,is held at tine front end by tire gun baud,and is prevented fromturning by asteel feather,a steel securingcollar screws on to tirelarge gland in front of gun band,where it is meld by a setscrew;tire cylinder is sireathedwitir metal to prevent scoring; tire front ofthe cylinder is closedby a large manganesebronze glandscrewedin, in whicin is placed an L leather securedby a metal stmn{llmmgbox containing‘75-inch squaresection hydm’auhic packing,winicir iscompressedby a small innerglandof manganesebronzewinchscrewsinto the stuffing box.

Tine escapeof air from tine air chamberis preventedby the useofliquid in the gland, this liquid being sopphiedfrom tire intensifier tothe gland at a slightly inighcr pressureper square inch tlrtrn theair in tine chamber. Daring recoil tire entry of tire i-am com-pressesthe air in tine air’ chamber,and this air is used to restorethe gun to tine firing positionm. Tine return movementis controlledby a controlling plunger in tine piston rod of (ho buffer, tineresistanceof which may be adjustedby a plug valve (e) on theaxis of tire rod, For charging tire air chamber, an air pump isprovided on theupper side of the chamber’,maying a copper-con-necting pipe (1) ; thereis ann attachmentin rear of tine au’ chamberfor a pressuregauge.

rubeintemnsifier is for supplying liquid to tire glandby meansof acopper’ pipe (j). I~consistsof a cylinder, on the lower sideof tireair chraniber, in which works a piston, with piston rod passingthn-ormgha stuffingbox, formedin tire from-it end of tine cylinder; tinerear end is in communicationwith tire air chamber. Tire cylinder’will require filling when tire piston rod of tire intensifier is ccciiprojectingabout3 inches; it is provided witb a tilling mole. To fillthecylinder’, reamovetire plug from flhlimng mole, placea funnel in tinehole,a special clamp is used for puslning back tire pistonrod, thisclamp consistsof two tic-rods, two cross-pieces,and a compressingscrewwith lever, and on screwing rip tire clamp tine find will hodrawninto tine cylinder. b’ee aisocareandpreservation,page51.

Carriage. -

Thecarriageconsistsof two sidesbuilt up of steelplates,to wlniehare riveted steelcastingsforming the trunnioin bearinngs. The sidesare bracedtogetherby transoms,arid arefixed to tine fr-out andrearbolster’sor box transoms; sectionsof upperroller patln aresecuredtotire bolster’s, The capsquar’csare of forged steel, and each erieis securedby six screws. Tine carr’iage restson a live r’oller ring,similar to that for tire Mark III mounting, sec page 25, and fittedwith 16 steel “Rollers, carriage, No. 18”; tire ring revolves ona racer attachedto tine pedestal. Steel clips, frornt andi’ear, securethe carriage to tire lower roller path. A sighting platform isattachedto tire rigirt hand side of tire carriage, from which alsoelevating and (ravernnimng the gun can be effected. A I)oimntel’is fitted to each side of the mounting,for use withr tire traversingnrc, which is beddedin concretesurroundingthe pedestal. -

- Gear Fining Electric. -

This gear is arrangedon (lie mounting, so that the gum cat-i befired from either side or from the position finder’ station ; in tinelatter casea safety plug in asafetyplug box is used.

The gear generally consistsof two contactbo~~s,a pistol grip,safety plug box, two connector’s pistol grip,- connection cable tobattery box, battery containingfour electric he 0fanc1n~cells withconnectingwires, andsix cables.

Tire contact boxesare of gun-metal,and arccalled “boxes, con-tact, shidixmg, Plug No. 3, arid PlateNo. 3.” The plug is of gun-metalwith cap, contactplug inn two parts, spiral spring, and insulatirngbush. The plate is of gun-metal, witim comntact plate, insulatingbash, and fixing screws, turd timey are fitted to suitable brackets.Contactis madewhnentine gnnmn is runup in the firimrg position.

Plno pistol ym’i’p, Marl~ill, is the latest approvedpattern for’ thisgear’. The case is made of an alloy of aluminium, and is fittedwith ann insulatedbronnzeconrtnrctneedle,an indicator’ with coverSarrnladjustable reflector, bronze comntnnct lever, bronze trigger, amrd asystem of conductsand spnimrgs. Tire mreedlo erndof thepistol gripfits into tine connrectoi’ at eitherside of thecarriage, rind mc clampedby a screw. rrhe imrdicator is irntended to imrdicate that tire electriccurrent is presentby a winite disc appearing,by lightly pressingthecontactlever (winicin is hingedin a slot in tine pistol Irandle or’grip). As t-hnis patternof pistol grip is intemrdedto be taken aboutto winicin ever side tine gum-i is to be fired from, car’e should betakennot to jar or otherwiseinjure it by i’onnglr usage,and when notin useit sirould be replacedun its woodenbox.

Thesafety pug boxis fitted err (lie left side of the carriage,andis pn’ovided with teminnirnals for’ tine cablecontactsand positiomi finder.

Tine comuvlo-i’s pistol grip are made to receive tire Mark Iiipistol grip andtine electric cables,and are attacinedoneon eaeinsideof thecarriage. The connector’consistsprincipally of a socket,witirjnnnmming block ar-id clamping screw to secure the pistol grip, anda gun.mefalblock with meansfor’ attachningtine cables, A hingedcover plate on tine socket protects tire terrairral clips witinirm tiresocketwlron tire pistol grip is withdr’awrn,

Tire battery box andelectnc bat!cry. The box is securedto tirecarriageon tine left side,and is constructedto eontainrfour’ electriccelTh, Le Cianchb,A, Mark lIT. It is of steel, with lid, ha-i-idles,nnd beam’imng strips, the wirole being galvatnisedttmroughonrt. Corn-metalfittings are riveted to theexterior for the attrrclrmerrt of time“connection cable to battery box.” Electrical connection is madedirect to (he battery by nrcnuns of copper strips-, one of which isrivetedto tine afore-memrtoncdfittings, and! tire otlrer to tire box,

The box is lined ivitir mahogamryand feainoniglrt, has felt padsto separatetire cells, - and hindinirubber strips for them to m’cst on.It is closedand r’enderedwatentigint by meansof arubber.iinnedhid(with a mahoganypacking piece), which is securedin position by~wohingedscrews,with fly-nrmnts, Pivoted to tine box, arid enn~ac~innwith suitableoperningsin tine lid.

The batteryconsistsof four electric cells,Le Clnnuch~,A, ~\fnnrkIii.The cells areof ebonite,rectangular in shape,875 irrclncs by 5’55inchesby 2’7 inches,6 block agglomerate they areissuedfilled aridsealed,amrd all that s-mould be necessaryto setthemnn in actiorn is t(nfill tlrcm threepartsfail ruth a saturatedsolution of sai-amnromninmninn water. Tine cells are put inn 1)ositiomn in-i the box, witir a felt padbetweeneachorne,andtinern connectedup to (inc copperstrips bcfon-e~m-nerrtioned,andeach cell in-i series,ic,, tire positive polo of one cellto the negativepole of tine next,andso em, by meansof a wire andIwo mill-headednuts for each tenminrnr], amid should be so ax-rangedthat tine outsidenegativepcle of the batteryis connectedto tine box

33

by (he copper strip, and the outside positive pole connectedto thegunmetal fittings by the eoppcn’strip at tire otirer side of thebox.

For care amrd pr-eservationof electric firing gear arid cells, seepages54—55.

Tire six 211 I electriccablesarecopperwire braided,with comnectingnuts ; eacircablebeingof suitablehengtln,anrdhavinga distimnguishningcolour, Letter,amid. number’, the two latter arc enngravcderr the nutconnectionat tine en-id of eachcable,andare filled inn with red wax.

Tire following aretire particularsof tire cables:— -

Gear,electn-icfiring—Lengtlr.ft. inns,

A, No. 11 17 0 .. White; from gunto slidingcontact.

B, No. 11 9 6 .. Purple; from sliding contactto safetyplug box.

0, No. S 19 0 .. Red; fromright harrdpistolgrip connector to safetyplug box.

D, No. 7 19 6 .. Yellow; from right handpistol grip connector tobattery.

B, No. 8 5 0 -. Black; from left handpistolgrip connector to safetyplug box.

H, No. 11 5 8 .. Unneolouned;fm’om left Inandpistol grip connector tobattery.

Elevating Gear,

An elevating arc is attacired to each side of (he cradle, andactuatedby worm wheel gear,tire worm wheel hasa friction clipclutch, formed by a seriesof alternatesteel and metalplates. Tiregearis so arrangedthat it canbe workedby handwheels,eit-lrcr fromthe sightingplatform on tire rigirt oi’ from either sideof the morn-nt-ing at the groundlevel, tire former’ being showmotion gear,and (hehatterquick.

Elevation Indicator Gear,

This gearis on tire left side of tine moumrtirig anrd consistsof airarc sogmemnt; spur pillion; spindle, with collar’ and nnuts; spiralsprung; steel pointer; graduatedrange dial; and bracket for spurpinion.

‘l’ho arc segr-nentis pivoted err time Irexagonal emnd of the fnrlsetrtrnnion of tine cradle trurmnion, its lower end is fnrrnislned withteeth which gearwith tine spur pinion. Tine gunmetalspurpinionbracketis fixed to the carriage, its outer end beingin tine form of adisc, and recessedon tire outer face to take tine range dial ofaluminium, timeseare secur’edto each otirer by screws,locally. Thespindle for tire spur pinnion, working in its bracket,passes(lrn’oughthe rangedial andcarriestire poimrterwiricin is securedby collar andnuts. To keepthespur piniomn up to its work, or to pr-event backlas-in, a spiral spi’ing is used;one end is passedover astud on tirepinion andtheother end is attacired to tine spar pmion bracketbya screw.

(9389) 0

34

Therefore,any movementof the gun in its cradlewill actuatetine pointer (by meansof the segmentan-id piniorr), winchwill indi-cate tine required elevation or depn’cssioinon tire dial connectedtotine carriage.

Cover’s for the protcctiomr of this gear will be made locally asrequired.

[nm latestmanufacturetire dial is graduatedwith scpaiatescalesfor full and tinrec-quartercharges,and an adjustable pointer -isprovided. SeeMark V eam’riage,page43.

Traversing Gear.

Traversingis effectedby tire tmaversinrgpiniona on the carriageengagingwith tine rack securedto the racereastimng; the front pinionis actuatedby bevel andspurgear,anda crosssiraft passingtirroughrtiro sidesof thecarriage,incur tine front, this shaft hasa handwheelon eachendworked at tire ground level; or by aninclined shaft onleft side gearingwith a bevel wheel on tine crosssinuft, and drivenby a hranndwheel from the siglitirmg platform; (Iris latter- is the slow-motion gearof this section; there is a separatequick-motiongear attire rear, right side, time rack pinion of whieir is actuatedby shaftirng,spur-, bevel gear, and a hand wined worked from (lie sightingplatform. Each-i upperhandwheelof the gear is now fitted with afolding handle.

Sighting Gears. -

flocking-bar- siglmts.—Thisgear,which is fitted to carry sightiirgtelescopes,is attachedon tire left side and fitted on the top of tinecradle by means of “Bracket, supporting i’ocking-bar sights,front and rear”; and consistsof a steel sight ban pivot-ed to thefront supportimmgbracket. Tire rear’ endof thesight bar is fitted tothe rearsupportingbracket,and furnishedwitin a hind sight lnavirngacrossInead, fitted with adeflection nut and reader, traversedby abrass screw,furnished with milled heads. A scale plate of emownmetal is attachedto the roan’ face of thecrossheadby two screws;itns graduatedfor two degreesrgint andheft deflection, tine defiectiomrnut is of steel with a sighting mnotcin ‘06 inch deep; a crown metalreader is attached to the rear face of the nut by two screws.Deflection is obtained by traversing the nut witir reader till thepoint of tire latter is over the requiredgraduation on tine scaleplate.Tire lower poriron of the sight eonsisthof a sight arc, -fitted on then-ear face with a removablerange strip graduatedto 15 degrees;the muzzle face of thearc is furnished with a rack whnicln engageswrth a pinnon actuatedby worm and handwhnecls. Attaciredto thepurnonspindlens an 8-mom drum,winicln is fittedfor tine receptionof anyoneof tine unndermentnonedyardscalerings.

Charge. M. V. Range.

Full Cordite Composite0

Full ,,

-~ ,,

-

2,643 f,s.2,196 ,,

2,600 ,,

2,127 ,,

14,00012,00013,80011,700

yards.,,

,,

,,

35

Tlrere is alsoa smnitabheynird scale r’ing for use with tire 1-inchaiming rifle, To facilitate reading tine yard scale,a steel reader,meattachedto tine bracket wormwheel, All scalesamnd range strnpsareof aluminium.

Tine foresightis of steel, and consistsof a molder,straight-edgesighting blade,acornfor fine layinng, adapterwithr adjusting andfir-ing screw. Time acorn fits into in recessin the holderwinere mt issecuredby a sen-ow. Tire bladeis fitted on tine molder amrd securedby an an’nnr wInch passestbrouglr a mole in the holder, uponwinchfit a spiral spring and collar with taper pirn, the objectof tine spir’aIspring being to allow tine blade to be pulled outwardsamid foldeddownwhern not requiredin a vertical position. Tlno hnolder fits mitetire adapter,and is securedto it by ascrew; tire adaptoris free tomovein in recessin tine rockingbar, and preventedfi’omnm turning bya featheron it, whnichi fits into afeatirerwayinn tire recess; tine adnipteris movedfm’om below by an adjusting- screw, fitted into tine rockirrgbar am-id clamped by a hexagonfixing screw,ivlriein passesthroughthe adjustingnut imnto tine adapter. Tine sight is in adjustmentwhenscrewed down inomne, ann! (Iris should be regardedas the normnralposition of theforesiglrt, correction being madeonriy to suit the in-dividual gunr layer, shouldtime permit of tiregum beingcarefullylaidon a distant target.

Automaticsights’.—Pla(cX1/11.—Thisgearis on tine right side,andprinncipaulyconsistsof acainlever(A); cam(B); earnroller’ lever (0),with axleandroller (Ci) ; crankslmaftbracket(B) ; can-i murderamrkedlever connectimngrod (B); sprimrgaridspindlein case(F), witir bracket(F’); bell crankedlever (G) ; pivot and cranked lever connnectinglink (H) ; sight bar (I), with foresight, telescope,ar-id hrindsighrt.

Air adjustableshoulder piece is now provided for usewith-i tinssigint. -

The cnnn lever is fixed to time cradletrumrmnion, and witin the cammoveswith tire gun,as tire hatter is elevatedor depressed,tire rollernnovimng along tine camby meansof the camroller lever’; the sightbaris movedalso,but at adifferent speedto thratof thegun,asprungandspindle keepingthe earnroller up to its work in tire cam.

Tine sight canbe moved by elevatingor depressingtire gum, and(ire cam is so shapedtinat tire angle between tine axis of (lie gumrand tire line of sigint is always equal to tine proper angle ofelevationfoi’ tine rannge. From (iris, it will be seen(mat ti-ic cammust becut to suit tire height of the gumr above tire sea,and eaelrcamwill tirus be specialto tire site for winch it is made,andalso for(lie full, andthree-quarterchai’gcs,andtires-c earnswill be substitutedby onecutto (herangelimit of tire 1-mom ainning rifle, whenrcquir’ed,so asto give increasedpractice in Imnyinig with these sights by usinngthe rifle.

Tire sigirt bar’ is pivoted in theeeirtreto tine earn roller lever,ar-idsecuredby a screwpivot.

Theforesigirt on tine sigirt bar is tire sameas that for theroeldug-bar foresight,describedabove,

The rear end of thesight bar is fitted for tire deflectionnut ofa crosshead,fitted andclampedby a elanmipingscrewto the rearendof the cam roller lever; tire deilection mint is fitted to slide in thecrosshead,amid is traversedby a br’ass screw with milled ircads; ascaleplate is fixed to tire i-ear face of tine crossbead,and gmadnmatedto 2 degreesdeflectionleft aridright; areaderis fixed to tine deflec-tron nut, andslidesovertire scaleplate. Tinesight barbeingpivotednn tire centr’eadmitsof deflectionbeinggiven inn tire usualway.

(9389) c 2

36

Tire stem of thecrosshead is fitted witlr a milled iread metal“Nut, adjusting,errorof day,” mayinga scaleroundmt, graduatedinyards“short” andyards“over”; by its meanstire relativeposntmonsof the sigint bar arid tine camroller’ hevercanbe alteredto tire extentnecessaryto compensate-for any error observedin tine sinooting. Atelescopeis providedfor laying on distant objectsor where extremeaccuracyis required. Tine telescopefits nn two hnoldens on the srgintbar and is capable of being adjustedto suit differennt layers, themoldersbeingprovidedwitim hinged caps to retamn the telescopeposition. For descriptionsee page37.

Bar, testing, sighting gear, autonnat-ic and rocking bar.—Threbar,- winich is of castiron, is for’ usein testing, by meansof tine Service

Chinrometer,theaccuracyof thetelescopeholders on (he sight hareofautomatic, rocking bar, arrd connbined automatican-id rocking-barsighmts of B.L. andQ.F. car-riages. Itis formedat eacinendto fit thetelescopeholders,the intermediateportion havimng a planefor’ theelinometer, An arrowheadis engravedon therearendwhich nvrll beset to correspondwith a similar arrow iread on tine rear telescopemolder.

In futurewhen testing (ho anglebetweenthe gun and the sight,tire clinometer readings- will be taker-i from the bar (fixed to theIroiders) insteadof from theplanefor-medon the rockingbar.

In tine adjustinerntof auto-sightstine lastmotion of theelevatinggear must be depression,except for any particularmounting withwhich it is orderedthat the last motion must be elevation, mid,moreover,thegun shouldbe balancedasif loaded.

Careand preservation,seepage52.

The following traversing are, inoldfast, pedestal,racer, telescope,

andcoverareused witir this carriage

Anc, TImAVEInsING, No. 33. -

The an’c is madeof metal, in three sections-,caclr omne beimrg innsegment lengthrs; the centr’e section inas the division-is and sub-dnvisnonsgraduatedupomr it-, and(heothertwo (lie degreefigures,thusadmittmngof thedegreesof traversebeingread by either theright orleft ponnter attachedto tire carriage (the inner figures with leftponnter,andtheouter figureswitir right pointer).

The arcis securedby steel screwsto cast-ironnuts, ian-genuts forthe figuresandsmall for tire gn’aduateddivision lengthis, let into tineemplacement.

Radiusfrom centreof middle sectionof arc5 feet 10 inches.

HOLDFAST, No, 4in.

This is of steel, and consistsof 13 anchoring plates, and 52lnoldnrrg-down bolts, which are 6 feet 7 inches long; tine bolts arcnutted to the bottom flange of the pedestaland embeddedwithi theamreiror’rngplatesin concrete.

Weight 3 tons 13 owl. 1 qi’.

PEDESTAL, CARRIAGE, No. 4 (MARK I).

RAcER, CARRIAGE, GAnnrnIsoN, BARRETTE, MARK IV, B.L. 9’2-nNdu(MARK 1).

The pedestal is identical, and tine racer is similar, to thoseofMark III carriage,p. 29.

Weight of racer3 tons 1 ewt, 3 qr’s,, complete.

37

TELESCOPE, SJG11TING, No. I.

In wood case, for automatic and rocking-bar sights; gar’r-isonvcarriages.

Mark I telescopeis about 25-inches long over all; nt bins anobject glass,and tcrrestrinnl eye-piece:the lenses-are of such sizesas will obtain a largefield of view with alow magnifyingpower; tinemagnificationis about 3 diameter’s,and, tire field of view is about10 degrees;a pointer- is fixed in front of the eye lens. Therennrotwo gnnnr(’tal bearingsexternallyabout tire centre,each 3~nmnoircslong and 2~innches diameter,winch allow 3 inchresof movementtosuit theconvenienceof differentgun layer-s. A long dewcap is fittedover tine objectglass-end, amid is providedwith a loosemetal cap.

The eyepiecewith indiarubbershield,to protectthe forehead ofthe gunlayer from shockwinen firing, screwson to tine main tube oftIne telescope,ann! is fitted with a br’oad 3-ring milled focussingnut.

Mark II differ’s from Mark I telescope in hnaving inrpn-ovedfocussinrgarrangements. Ti-ic focussingis effected by turning tireeyepieceportion of the tube,tine amounntof turning movementbeimigreadoff on a scalenumbered0 to 7, so that inndividual observer’smaysettheir focus to thefigure previouslydetermined. The length is24 inches.

Telescopesof (iris Mark are provided with a diamond-shapedpointerfixed in front of tire erectorlens.

Wreigintabout6 lb. 10 ozs., Mark I,; 7 lbs., Mark It,Fm-ill partieniarsas to carerind useof the telescopearescouredto

theinside of the lid of the woodcaseinn which tire telescopeis keptwhen not in use. Ordinary chamois leather is used for cleaningthe object glass of tire telescope.

TELESCOPE, SncinTlrw, No. 3.

In wood case, for automalic and rocking-bar sights; garrisoncarriages.

This is generallysimilar in construction to tire No. 1, Mark II,but is of higherpower, i.e., magnification10, field of view 3~degrees,and a A-shapedpointer. -

COVER, CARRIAGE, B.L., 9~2-INCnI,MARK IV, BARRETTE (MARK 1),

Tinis is similar to tlnal for the Mark III carriage,page29.

~1OADING ARRANGEMEN’US SOR 135K AT GrnrnAr~TAnrWITH TillS CARRIAGE.

Tire arn-nrnnmnition,cari’ied by its troliey, is broughtup by lift fm’omtine ammunitionstores—twolifts are furnishedso that theremay benomnntem-rnptioninn (lie supply of ammunnition. Tire lifts (with metalranis on top) form part of time circnrlrnm- railway, laid at a radiusclearof that describedby tire breechof the gun-i, to enable tire guir to beloadedat almostall degreesof trnnverse. Anolhrer line of m’ails, laidat a greaterradius(Iran the last mentioned,takesa iondimrg platformivirneh is movedr’ouud witir (lie loadingtrolley.

Loading trolley.—Tlnis is mn iron box with woodcasingto fake thetwo inaif-charges,side by side,in the directionof lenglin of trolleyit is-fitted with two axles andfour railway trucks. On top a pro-~ectnlemetalcarrier ~spivoted, which can be ti~rnedt)r~-ougha lmaif.

38

circle, andclampedby aclampinglever, in (lie loadingand fore andaft positions,it carriesa metaltray to take tine projectile, tire tn’ay isfm-ce to slide on tlrreerollers in time carrier,so Ilnat it can be 1muslncdforward unto time gum-i to pr’otoct the tirreads of the breeclr screwwhile ioadimrg, mm spring on tire carrier engagesmi slot in time tr-ay, timuspreventing it being pushedout of (ho carrier, f-ire spring -is dis-engagedby meansof a s-mali cam lever. A lever is irimngcd to (hopivot bracketon tine inner side of tlro trolley for’ attaching(Inc trolleyto tine bm-eeclrof tine gnln, tine latterbeingelevatedfor’ this purpose.

Locndirmgplalfor’mnn.—This is of iron, fitted underneathwith fourrail-way truckson two bent axles- to suit tire different level of i-ails- ontire sloping ground, the inner ends of tire axles- have gunmetalrollerswinch fit under a bearing plato in (Ire faceof the emplace-mont to pn-eventtIre platform upsettingoutwar’ds; the inner- cornersareeacinfitted witir a screw for’ clampimngtine plrntformn to the workduring hoading; inn iron lnanndleis fixed near each end of tine plat-form for use in movingit, and guard-irons are fixed on (lie out-side,

CARRIAGE, GARRISON, BARBETTE, B,L. 9-2-INCH,

MARK V.

(PlatesXIX to XXVII.)

This mounting is constructed to fire en barbette from a pitemplacement, 28 feet inn diameter and about 8~feet deep, amidgenerally consists of a cradle witin elevating mrnd siglrtimng gear’scarriage with shields-, loading, traversing, and indicator gears;pedestalwith holdfast,pivot plate, andlive roller ring.

T!’ne gun recoilsaxially in its cradieabout3 feet 6 inelnes,cxtr’eme3 feet8 inches.

For elevation,depression,weigirts, &e., seetable,p. 23.To mount thecarriage,gun, &c, seep. 52.

Bands and SlidingBars.

Tire bandsarefront (A) amid i-car (B) ; tire formmner is eastin threepiecesandtine latter inn Iralves; (hey are bolted (ogetinerafter beingplacedin position on tire gun. r1~hcfronnt bandis securedto tIm gunaboutthecentreof gravity, and therearband in its seatingneartirebreechr; the last namedbannd is preventedfrom (urni-ing by a key ontire gun. Tines-c bandshaveprojection-is air tireir sides, where tireyjoin, upon-i winch are fitted sliding bars- (C); thesebar’s are eacir11 feet 118 inches long, eachhaving an anti-friction metal bear’imngplato extending5 feet from tire fr’ont, the barsfit into correspondinrgsliding sun’facesin tine sidesof the ci-adhe,

Thereis mn projection cnn (be lower side of the front baird wlnieinInns a hole formed by the two lower castings-for tine cylinrdcr of tirelnydraulic buffer, thecastingsarefixed togetherby screwbolts.

Tire gun, bands with sliding bars, arid buffer cylinder recoiltogether.

Cradle.

This- is of steel castings,and consistsof two sides (D), 8 feet10’7 incheslong, preparedon the insidegfor tire sliding barsattachedto (lie gRin bands,grooved to contain lubricating material,and eon-i-irectedat tire endsby a front and~nreartransombracket. Tine front

39

brackethasahole for’ the receptionof tire piston rod of the lrydrauiicbuffer, andtire rearbracket is cast to take tire air ciramber,broirzeanti-friction strips- beinglet in on its upperimollow for the gnu.

Ball bearings. Plate XXII.—Tlre cradle is pr’ovnded with ballbearings inn a nmnnnmnrer somewhatsimilar to tire Mark III barbettemounting,pages22, ‘24, An anti-friction ball bearingis fitted on (moouter endof each trunnion; each bearing consists of 24 hard steelballs, which work inn a gr-oove formed by two Iran! steelbevel rings-securedby a metal adjusting nut screwed or-i to tire trunnion,con-sequenntlythese revolve with. tire er-adlo; over’ the balls is a s-techband having on its innner circumferencea hard steel bearingrung,whicir is let inn and securedby a retainingsteelring arid tirree screwson tire inns-ide face; (mere is a socket formed err tire undersideof tinebamrd for ti-ic snrpporting screw of ball bearing; (Iris screw has acylindrical head, to fit time socket just mentioned; below it is ahexagon shoulder to take a spanmmner, tire lower part of the screwbeingthreadedto screwinto a correspondinghole imi a projectiononthe carr-iageside; a pair of No. 46 spr’imrg discs- is- arrangedon thecylindrical part of tire s-crew. Movementof (Ire cradlein its bcarimrgsis remnder’edeasyby the adjnnstmentof thesupportingscrews.

A steel elevatingare is bolted to the undersideof each of thecradle sides, tine al-c-s being connectedand strengthenedby a crosstransombar. Fitted to tire front of tire left arc is a metal arc for’tire elevatiomnindicatorgear.

The left tr’unmnion is casthnolionv and preparedfor tire elbowpipeof thehydraulic system,tire irohlow is corrtinucdalongthe sideof tirocradle to tine rein-, wirere it is connectedto tire recoil utihisingcylindersof the hydraulic gear.

Inn future mnamnufac±ure(Ire faceof the r’ight-irand cradle(runmnionwill beengravedwith onevertical andonelror’izonital line.

A chinometerplaneis cuton tire top of tine cradleon the right side.

Hydraulic Buffer and Air Chamber.

Plate XXI.Tire inydrainhie buffer (E) is inn tension,(Ire cylinder fornniiig tire

r’am of tire air cinamber; tine piston mod andair ciramberare secun’cdto tire bracketsof tine cradle. Tine fr-out band(A) takes-tine cylinder-of thebuffer, winicir is- retained by a screwcollar of steel screwedon-ito tire front of tire stuffing box, a steel feather let into tire cylinderam-id bairdunderneath prevents tire cylinder turninng imn its irousiing.Tire roar bracketearr’ies tire air chamber,whniclr is securedto it bytwo screwsunderneath and one on top. The piston rod is corn-nectedto tire front bracketof (lie cradleby ascrew collar in rear’anda mint arrd keep pimr in front.

Tine buffer admits- of 3 feet 8 inelres recoil, metal to metal, aridwill hnoid Dii- gallons of liquid.

Tire cylinder is of steel, and is 5 feet 11 inches- long amid14’4 inchrcs diameter,over all, and is sheathed\vitln gunmetal,topreventscoring tire bearimrgsof the air chamber,the sheath beinng5 feet 1 inch long, andscour-edto thecylinder-by smallscrewsin rear;intermraihythereis a manganesebronzevalve key whieln fits into anundercutgroovein thne cylinder andis securedby a screw; (ire frontendof thecylinder is preparedfor (ire large or innerglandwhich isscrewedin, an-id whicir contains-an L-leathmor; tire stuffing box forhydr-auliepacking screws- into (Iris mimer gland, the packing beingtigirtonedup by asmall or outer glandwhich screws-into the stuffing

40

box; the rear ennd is preparedinternally for tine receptionof tinecontrolling plunger,externallyit is cuppedout so as- to offer a largesurfaceto tine air in the clramber. It hasa filling and emptyingvalve on theundersideandan air ping on the top.

The piston with rod is of steel, 6 feet 86 inches long, over nh,62 inchesdiameter,boredon-it internally for the controlling plangerandmanganesebronzeadjustingvalve tube. The piston is 10 inchesdiameter,and inns two manganesebronze rinmgs let into undercutanmruiargrooves-to pr’cvent wearingthecylinder by scoring; there isalsoaport for tine valve key of (lie cylinder. Tire piston rodis screwthreadedin front for theconnectingcollar andnut respectively.

Tine controlling plungeris a steelrod 2 feet 10’S inelneslong, ovei~mill, and34 memosdiameter,tmnpen-edat thepoint; it screwsinto therearendof (lie cylinder. A flat is- formedalong (ire surface,terminatingradially nearthe base,for’ tire passageof timid from the hole in timepistonrod. It is now madeso as to give a more uniform “run upthnanformerly.

Tine air chamber(F) is a manganesebronze casting; it is 8 feet4’S memos- long, 18 inches diameteroutside and 15 inclnes inside,divided into two partsby a diaphragm,tine rear part containing thetube (h), whichhasa valve at eitherenrd for charging tine cinamber,Tine front end of tine cirainber is- closed by a glamid containinghydraulic packing, securedby a metal flange. To prevent tineescapeof air over tire gland,liquid is supplied to tine gland by aninternsifner,at a higinerpressureper squareinch than (lint of tire air’.A small port (i), admits air, also-asmall quantity of tine 3 quartsofoil in tlrc ciiammrber,into thecylinder of the intensifiem-. Tirero is anair escapevalve on top of anr chamber over the main gland, toallow air to escapefrom the gland winen filling the intensifier byfunnel.

For charging (Ire air chamberan air pump is connectedto oneof the wing channels(j), ~vinilea pressur-cgaugeis applied to (heother channel,and by openingthe valve (k), air will be admitted tothe chramberup to an initial pressureof 200 lb. per square inch.A small air pump is attachedto the carriagefor maintaining tineinternal pn-essuroin theair chamber.

The intensifier (G) is- for supplying liquid to (he gland, as beforestated, amid consists- of a cylinder cast in the rear division of airchnamber;it hasan internal diameterof 4’6 inches,providedwitha piston androd, inner mmd outer glannis,nil of nnanganesebronze;tire piston inas asuction leatherfront and rear securedto it by thinplatesandscrews-,andhasa strokeof 10 inclres. The cylinder willrequirerefilling whentine rear of the piston rod is about Bus-hr withtire rearof tire inner gland; filling is effectedby applying a pump totime filling hole, marked“A1” on theping (see careand preservationn,page54) ; oil iviil flow into the cylinder’ in rear of the piston, tlnopressureof whichwill be greater(han(he air andoil comingthronmginthe smallpom’t (1), from the air chamber;thus tire oil will beforcedtinrougin tire pipe (1), on to the mnir chambermain gland. In theabsenceof a pnmp, a funnel and specialclamp may be used,thelatter for pushingin thepiston rod; this- clamp consists- of two tic-toils, which screw in(o holes in the rear of air cinamber, one oneitherside of intensifier,a cr’oss-pieeeto be applied on thepiston rod,anda compressingscrewwitin lever.

P’essun’es.—Th~diaphragmof air chamberwill standa pressureof .500 lb. per square inch, and (ho completeair chamber,withintensifier,a press-un-cof 1,200 lb. per squareinch.

41

Action—Wincmt tine buffer mmd air chamberare charged (see careandpreservation,page54) beforefiring, tire liquid in tine buffer rs infront of (Ire piston,and on firing, tine cylinder of (Ire buffer ns forcedinto the air’ chamber; wlren tire liquid passesbehind tire pistoir,throughtine port, tire resistnmrceoffered by tine fluid chrecksthe recoil,assistedby the resistanceof the eominpr-essedair in tineclmanmber on tireeup_sinapedenrd of tine cyiimnden’. Air’ displaced by tire advamcingcylinder is forcedinto tire rearportion of the einamnber(hmm’onglr snirnilholesat tine centreof tine diaphn-agm,at a pressureabout equal tothreetimes that of tire initial pressure; (iris increasedpressure,over’tine normal,actingoir tine piston-i of the intensifier tirrougin tire somaliport, acceleratestine force of the liquid tirroughn tire pipe on-i totire gland. Tire compressedair turns ston’cd rip, elm corrplete recoil,pushnestire hnydraulic buffer eyhirnder’ forward, andin doingso bi-ings-tire gun to the firing positionr. Tine controlling plunger on errter’ingthe mole in tine piston n-ed displacestine liquid receivedwinerr thecylinderwas in (he rearwardpositionn, tine liquid returning throughtine spacebetween(he flat on tire plnnngeranrd the mole in tine pistonthe i-esistanceof tire hiqnni(1 on tire plungerpreventstine gun rnmnninngup too rapidly.

Carriage, Shield-c,and Sighting Platfornrs.

(PlatesXIX and XX.)The carriage (H) ednsistsof two side Inr’ackets,built up of steel

pla(esandangleswitir cradletiunnion bearings,whichare strengtln-cued by a casting riveted on to the outsides; thesecastings-inaveprojections for tire snrpportirrg screws of tine ball bearings of tirecradle. Tire sidesare connnected.by having two frornt, two rear,andtwo inntermediatetram-is-emsof steelplatesannd anglesriveted to (hen-i.Two bolsters or box trarrsomns are fitted to the undersideof thecarriage,eacir one, front andi’ear, inns am-i upperroller path-i fitted toits under surfaceto take a bearing on the hive roller ring (HH),whicin is tine sameas for tire Marks III andIV barbettocarriages-,Two platesfor connectingtire carriageto tire pivot are fitted to thecarriage, one betweentire box transoms,(Inc other at m’ighnt angles,riveted together’ and to the box trarns-orns; there is a mole in thecentre, wirere these plates cross,fitted with a metal busir for tinepivot plug. An iron block or plate is bolted to tire br-easttransom,to winch is securedtine front clip plate. The front and rear clipplates(I and J respectively)are bolt-ed to (ire carriageand engageundertheouter flange of time pivot plate.

The carriageis provided witin steelcap-squares,screwed down,f?i’ seeum’mngthe cn’adlc inn its bearings. A wood stop (0 limit eleva-trcn is secum’cd at tine rear transom, and two steel stops to limitdepressionaresecnrredto the stays can-ryinig front shriek]. Woodencoversareprovided to keep out dim’t and grit from tire live rollerring, seepage54. The upper part of the mournting is reachedbystairsin f-he work.

Slnields.—Foursinields areprovided: omnefor tire protectionof tireshell pit, which alsoanswers(be pur-posesof aplntfornn from whicirthe snghtinig platforms are reaclned,loading arranngemcnts,&c., areattendedto,while to its undersideacircular overheadrailway is con-structedfor tine projectile troihies: amnother,tine fm-out shield, is forgeneralprotectioim: while two smallside shnieldsare principally fortheprotectionof tire air chamber-.

The circular shieldfor shell pit (K) is 27 feet 9 inchesdiaureter,amid consists of cantilever’s made up of plate and angle steel,

42

supportedby kneebracketsfixed to the carriage,namely,two orn eacirsideandends; 1~-inreirsteelplatesan-c riveted on top of tine girders-to form theplatform. Neartire outer’ rinnr of tire s-lucid is a flange ofsnflIcient depth to admit of tires-bell(milies runningomn (opof its in-side flange,termedtire onnterrail; an innnerm’ail with a similar flanmgois- fixed to tire girdersof the shield by kmnee brackets; tine gauge oftire rails is 3 feet 92 inches. A slnorb lerngtir of the inn-icr rail is- maderemovableat tine rear by being securedwitir bolts and nuts, insteadof rivets,so (mat thetrohlics mayberemovedwhenrequired. A gra(-inng is pm-ovided or-i eachside inn fronnt, andopenings in rear’ for tireprojectilehoist, an-id loadirrg gearsfor winichr tlnere rnrc Iringed coverplatesor doors. The openingbetween(he doors for tire rearhoistis- now covered by flaps, which are openredand closedautomaticallymy thehoist. Guardsare fitted to tine upper’ portion of the outer’i-am to prcvcnt’tlnc flaps fouling the tray whenbeinglowen’ed. ‘l’hneselninnged doorswith flaps nrust be openedwide whrerr fir’irng nnt higlnamnglesof elevationto allow tine gun to recoil free of tire shield,andat tire sametime a pin inn tire sideof the carrinngehimitimig elevationisremoved(vide instruction plate on fine carriage). Plates of shreetleactarcfitted on tine (op of tine slniehd andautomaticflaps,in order togive (lie numberswon-king (begun a securefoothold.

A siqinling platform (J~)is erectedat eachside of tine carriageontop of sirield.r1~1netrollies (M) are for earm-ying tine projectiles on their sides

fr-on-i tine fr’ont hoist (N) of tine pit to the loading position or i-ear’hoist (0). Each consistsof a steel frame unountedon four flanged.rollersof 575 inchesdiameteracross(Ire flanges,with a chip plateateachend;awood bufferor striker’ block, furnisinedwith aropehandle,is boltedon to eachside of tine frame,amid awood mousingblock, a pairof steelIrinrgedbearingstraps,securetire she]i inn transit. Tire outei~-clip plateof (lie trolley Inns a groove to engagetwo spring catclres,which securethe trolley inn a position suitable to (ire hoists,that forthe front position-i is on arm (P), seeur’edto (lie parapetof tire work,and tine other to a bracket (Q) on the outer rim of tire abovemnneintionedshield. -

Tine front shield (It) is a 6-mom steel plate,made in innnlves,mmdfitted togetherwhen in position by a steelbutt plate and screwsorrtire inns-ide, The shield is winged to the r’enr and sjnlayed outwardsat tine bottom ; it stamndson tine shell pit shield,and is securedtotine carriageby s-feelelms-tie stays with disc springs. Tire fr’ont iscut awayto suit the gun-i, andalso for tine sights,

~i10 dimensionsan’c 10 feet 4 inchesacm-os-s fire front, and 8 feetnit thro sides.

‘l’lre ride shields (8) are (we 4-inch steel plates,each one issecuredto the carm’irnge by steelelasticstays with disc springs; tlneynrc or-i top of (he shell pit slnield.

ElevatinqGear.

Plate XXIIL

Ti-is gear’ admits of 15 degneeselevation and 10 degreesdepressronr,amid is- so arn’nrrrged (lint botir can be obtained fromerther side of the carriage,from the sighting platforms,or by anextensnoaof tine gearwbnein is worked from tire floor of the pit atthe left side, tire former being slow-motion gear and tire latter’quick.

43

Tine geargenerallyconsistsof a powerful cross-shaftworking in-ibnnsincsin tine carriage sides,annd furtiner suppon’tedcentrally by asteelbr’jnckct screwedto tire fn-ont box transom. Tins shaft carriestwo an’c pirniomns whnicln gear’ with tine arcs of tine cradle,and. a steelworm wired on its onrter enrd at (ire rigint side of earn-ms-ge. Tireworm wheelis pm’ovidcd withi a friction clutch formed of alternatesteel arrd gunmnnretal r’imrgs, eigirt of each-i kind, and two janmmnrrngplates,tine mmcm’ beingof gunmrnetalamrd tine outer of steel,all of wInchfit on tire lncxagoaflats of tine shraft. The adjustirient of theseuseffected(to preventtire gum rnnmrrning down wiren at extremereeorl)by meansof a No. 50 spn’ing (his-c amidi two steel nnnfs on tire sinaftoutside of worm wheel (see also care and preservation,page53).Tire worm wired just describedis in gear with a worm on tiretinirci-motion or w’oi’m ahraft working in metal bearings-, and toreduce fn’iction as mmcm as possible in these bearirngs, amr mmli.fi’ictiorn ring is fitted or-i eachnend of tine worm, eachone consistingof one outer an-id two inner steel rimngs, and 23 steel rollers. Tireworm shaft is in bevel gear witln tire vertical seeond-mn-iotionshnaft,working in bearingsseen-in-cdto a iniate bracketor-i tIne fn’onrt of(Ire carr’iage, and havingon tine upper crud a bevel pinion in gearwith ano(irer bevel pimnion on tire fir’s-I-motion sininft, wor’kinng inbearingsin casting(a). Tins last mentionedsiraft rs- actuatedby tirehandwheel(5).

Tine first an-id secomnd-motionnsections-of the gearon tire left sidearesimilar to thosejust describedfor tine rigint side,botir theseside

~ gearsareconnectedby across-siraftmayingabevelwheel on eachend,~ gearing with similar piuions on the vertical seeond.motionsmall.~ This en’oss-slnaftis supportedin metalbracketson-i theouts-ideof tire~ carriageandon the inside of thebreasttransom.

Tire sectionof tire gearto be workedfrom tire pit is a continua-~ tier-i of tine vertical second-motionshaft, left side,amid a bevel wheel

on its lower end, wlnich is in gearwitln a simnilnnr pinion on a fin’st-~ motion spindlewhich is actuatedby tire lrandwineei(c). TIns sectiomi~ of tire gearis principally snrppor’tedin aeaststeelbracket securedto~ the umrderside of tine front box transom. This bn’acket is also~ preparedfor the lower sectionof tr’aversinggear.

ElevationInndicator Gear.

Tinis- gear is so constructed (but tine range i’eqain’cd will bemnrdrcatedon the dial by a pointer’. It consists of an arc, wiricir isattacinedto the front of tine heft elevating’ are, inn gear’ with nr sjnurprnnon omn a short crossshaft working tinrongir tire left clrcok of tinecarriage,supportedby a bracket err tire inside of the cincek and adm1 or disc bracketont (hefromrt box transom. Fitted err tire outer’endof tire cross-shaftis a dial or’ dise, haviug ayard scaleengravedupon rI, tine rangebeinginndicatedby a pointer securedon the umnder-sideof tire rim of thedial bracketby two screws.

All thepartsaremadeof metal, except tire cross-slnaft,which isof steel.

In latest manufacturetine dial or disc is- graduatedin separaterangescales for fnrll, andthree-quarterclrarges,and ann adjustablepointer is provided. Tine poinrter consists primncipahiy of ann openframe with a sliding plate,whnicln may be clampedto the framebyanut to exposeeitinem- one of the scales,andat tire sametime masktheother.

44

Traversing Gear.

(Plate XXIV.) -

Tire traversinggear’ is- arrangedto be wor’kcd practically fromtine samepositions-as tire elevatnnggear’, andrs generally securedtotire carriagein a similar way; and like it the lower is quick motionannd tire uppershow.

The driving, or rack pinion, is at the rigint front of themounting.Its- s-hraft works inn a metalbus-hi securedin the box transom of tireeunn’riage, ar-id carriesa spur wined wlniein is in gear with a spun’pimniomm on tine lower endof a short spin-idle lravirrg aspur wheel at itsupperemrd in gear with-i a spur pinion on a vertical secoind-nrotnonshraft, at the upper endof winich is a bevelwheel in gear’ with asimilar pinion on tire fir-st-motion spindle,which is actuatedby tineirandwineel(a) with foldinng inanfihe.

Tire upperpartof tine left side gear’, is- similar to thaterr tire rightsidebefore described,and is comrnected,to it by a cressshaft in asimilar mannmrerto tine upperpart of tire elevatinggear.

Tire section of time gear to be worked from the pit is similarlyarrangedto that portion of tine elevatinggear, being a prolongedsecom-nd-nrotionsimafli in bevel gear,a first-motion spimndle,and lnannd-wined (5).

Stops are provided so that practice may be kept within safe]aten’al Umits. Tires-c consist of two buffer stops,each inciuding asteelbracket carryirrga spindle witln two pairs of disc springs-, nirtand keep pin, the brackets being secured to tine pivot plate byscrews,andun steelstop,whicir is seeur’edto (lie front clip plate oftime carriageby screwbolts.

Sighting Gear.

1?ockinrg-bar sights,Plate XXV.’-’-’Tlmis gear is- on tire left side oftime rnountimng,supported by a metal bracket (a), seenimedto tirefn’ont (ransom of tire cradle. It consistsprincipally of earn-icr(5),rockiungbuni’ (c), sight bar (d), with front and i-ear sigirts (e,f), andtelescope(g).

Tire steelcarrier is attaciredto thearmof thesupportingbracketby screws with eitirer T-simapedheads- or hexagonheads(In). Aworm wheel and pinion gear actuates a 6-inch drum, on whrosepcn’iphei-y there is a crown metal yard scale ring graduated to14,000yardsrange,with MV. of 2643 f.s. for full charge; thereisalsoa 4-inch drain with yard scalering for tiiree-quunrter-cimarge,thering being engravedto 12,000yards,with M.IT, of 2196 f.s-,, andaseparateyard scalering for the4-inch drumis providedfor us-awithtine uninninig rifle; and to facilitate readingtheseyard scalerings, asteelpoinrtcr (special to eachdiameterof drum) is fitted at the rearof thecarrier,

The rocking bar is connectedto the carrier, in front by the pivotpun (1), andnn rearby the are(j); tine front end is preparedfor’ thepnn of srgintbar; tine rearendfor’ the tr’aversing pin or nut, andacrossireadwhir deflection leaf graduatedto 2 degreesleft and r’im~Intwhricin is worked by a screw with nrihled heads,3 de~i’eesb~ingallowed as correction for drift; (be arc on tire undersideof the barhas teeth on tine front face to gearwith the pinion on-i tire carrierandin rearascalegraduatedto 15 degrees;a stop on~the lower enriof thebar preventsit runningoatof gear,

45

Tire sight bar is a steeltube (mat carries the sights. The foresights consist of an acorn on a hug of tire bar, and a sighrtimrgbladeon a imexagonat tire front of the turning rod witiiimr tine baror tube; the rod is seenrm’ed by a nut and screw, and can-i be tnmrmneddownwhennot requiredby the thrnmbpiece(In); aspiralspringon tiretun’nimng rod at tire rear, withimn tine tube,retainstire sightmmmg blade inpositiomn. The rearsight is on alug securedto tire sigirt bar; it hasa ‘OG-incin mroteh.

A. telescope is provided for iayhmg on distant objects,or whenextremeaccuracyis- required. The (dies-colic fits- in two holders ontine sight bar, andis- capable of being adjusted to suit differentlayers,the molder’s being provided witin hinged caps to retain thetelescopein position. For descriptionseepage37.

For comrvenicnceof tine gun layer, an adjustableshoulderpiece isprovided. Time stockis of walnutwood, with an elastic pad formedof a lengthr of indiar’ubber tube,winch iras its upper cud protectedby a brasscapsecuredto thestockby’ screws.

Automatic Snqht, PlateXXVI.—The automatic sight gear is onthe riglnt sideof tire mounting. it is automaticallyset to tine m’angecorrespondingto thrat of (he target,Dy useof a cauraction. All thatis- necessaryfor use is to align tine sight wi(ln (ho target. Acorrecting gear ms conrnectedto the traversing i’ack to adjust tineauto-sightcan-i with thecradletrunnienaxis for rnny inclination theremay be in the pivot.

The gear generallyconisists of a telescope (a), supportedinn agunmetalcarrier (in), a gunmetalIningeflap (c) for earn’ier, gurrrnmetaibracketsuppon-tingininge flap (d), gunmetallevercamroller (e), metalbushedat eacinend, manganesebi’oiw~ecainroller- (f), cam (g), camsliding block (In), cam tidal correction lever (i), and graduatedarc

(5), andsprimrg in gunmetalease (In). Tire abovearesupper-tedby asteel bracket (1) attaeined to the front transomof the cradleat timeright side; (iris- br’aeketis metal has-liedto take(ire pivot of tire earnroller lever, the pivot beingallowed 3 degreesiaclinatiou correctionfor drift, arid is adjustedby a sot screwor-i top of tire bracket,

Tine telescopeis securedin tire carrier hearings by steel capswhicin hinge on-i (he left sideand keptdown by screw clamps em tireoppositeside. On top of tire carrieris a ehinometerplane. Deflectionis obtainmed by tine carrier and hinge flap being pivoted near- theirfront ends,(merebeinga traversingrack formed on tire rear of tinecarrier to gearwitin a worm spiindle on tine hinge flap; this wormspindle iras a drum on its right-irand emnd, tine drnrm inns acrownmetal deflectionscaleonits peripherygraduatedfor 2 degreesrightand left deflection (andinn order that time direction-i for turning manybe clearly indicated, tine words “rigirt “ and“left “ with directimngarrows mire engravedon time ring) ; a readerto indicatedirection,&c.,is- also provided. Tine iminge flap is connectedto the supportingbr’acket(d) andis given a vet-tical movementby a joint pin in fr-outandan“error-of day” nutarrangementin rear,thenut beingclampedby a jamming lever; thereis areaderon tine rear of the bracket(it)to facilitate readingthenut graduations. Tine bn’acket(it) slidesintoandis securedon top of time camroller ievcr,tire latter’ Inoingpivotedtotire steelbracket(1) err cradle; tire lower cmiii of tins levercarriestineearnroller, wInch is kept up to its work my (Ire steelspring (In) ; onecurd of time spring spindle is attacired to tire eccentm’ie spin-idle of tirecanr roller, tine other endbeimmgattachnedto tire carriage. Tire camisfixed to tire sliding block inn tire guide(in) securedto thecarriagebyscrews, tine block with cam being actuatedas to level of racer

•41;

by tine eccentricr’od of tire correctinggear. Thereis- aseparateearnfortire fmmli andtinree-qnnam’tcrcharges-,but tines-ccamsaresubstitutedby onecut to tine rangelimit of tire I -imnein aiming rifle, wiren n’eqnnired,so asto give incr’eas-edpractice in laying with tines-c sigimfs. Adjustmentof tire camfon’ tide levei is effectedby tire lever (1) winch is connectedto tire earn,amid works on tire metal graduatedar-c (5), slrowing riseandfail of tide, the leverbeing clampedon tIne ar’e by afly nut.

For conveniencein-i laying tire grin a shoulderpieceis providedasfor tine “rocking-bar sigirts” beforementioned.

Bar, testiuhy,siqIntin~qear, automaticand r’ockivg ban’, 111cm-InI.—TIiebar’, whichn is of castiron, is for’ use in testing, by mourns of theServiceOlinrometcr,theaccuracyof time telescopeholderson Line sightban’sof unatomatie,rocking bar, a-i-rd combinedautomaticandr’oekirng-bar sightsof B,b. and Q.F. eam’riages. It is formedat eachend tofit (Ire telescopeInolden’s,tine intermediateportion lnavirng a planefortire ehnorneter’. Ann arrow head is- engravedon the n-oar end, winchwill be set to correspondwith a similar’ arrow head on the m’eartelescopemolder.

In future, when testimrgtheangleinetweenthe gun-i an-id (h-ic sigint,tire eliaometer readings will be taken from the bar (fixed to timelnolders)insteadof fr-em tine planefor-medon the rockingbar.

in tire adjustmentof auto-sigintstine last motion of tine elevatinggearmust he depn’essiou,except for any particular mounting withwhich it is orderedthat tire lastmotioun must be elevation,and, snore-over, tine gnnn sinonnud be balancedas- if loaded.

For careandpreservation,see“Regulation-isfor carearid presen’va-tiorn of Artillery Matóriel.”

Loading Arrangements.

These genei’ahiyconsistof a steel armwith loading tray, afrontsnmnnl aroar Irydnauhiemoist with nnccnnmuiatoi’gear,arid a derrick witirwindlass-andtackleas an auxihiar-yarrangement.

Tire steelarm is madeof platesan-id anrglesrivetedtogetinet’; it isbolted to a projectionat tine left rear of tire cradle, tine outer end ispreparedfor a joint pin upon wimicir tine tray pivots.

Tine tray is of metalconnectedto tire before-mentionedsteelarmby time joint pin, aspring locking bolt beimng used for’ securingit intine n’equired positionr; a steadypin with locking catch is providedtoengagea correspondingmole in tine heft faceof tire bronzeend frameof tine gun. Tine tm’ay is- intendedto protecttine screw tirroadsin tinebreecin of tine gun nvlnile tire projectile is beingrammedhome. i~ftertire cartridge is londed time projectile tiny is- swung back amnd tirebreech closed.

Tine DerricIn Gear,—Thederrick is madeof two steelcurvedplateseonnmectedby collar bolts,andsecuredto a jnivot pieceby scn’ews;tinepivot piece is flarnged and tapered,and providedwith two bearingsnnm’faeeswinicin fit irn(o correspondingmetal bushesin tire lugs of asteel bracket itt the left rear of the carriage. it is fitted for a failof rope44~-feet long witim asheaveblock witir inook andtinimble. For(iris pur’posca sinackleamndl threegunmetalguidesheaves(fitted withsteel guan’ds- to preventthe ropefrom ieavinng tine slmeaves)arefittedto tine plates-of tire derrick, Or-ic end of tine rope is spliced to thesinackle at tine (op of tine derrick, (Ire otiner end is i-eye thrrougintire sheaveblock, over tire guide sireaves,down througin time holein thepivot pieceof derrick, and (lien spliced to the thimble which

47

is scour-edto tire windlassdrum by apin. A ropeguideis also fittedto tire mounting, immediatelyabovetire windlass,in order to affordadditiomral pr’otcction to tine rope.

Thewindlass consistsof a cast-irondrumwitin ratchet and bandbrake,anda spindle with a No. 35 winclr lnurnrdlc ; it is attachedtotIre uurder’side of tine rearbox transomof tire earr’iage,inrmenhiatelybelow tire dem’rick, by meansof a cast-iron bracket.

Winen us-inng thederrick the projectile is bronrglrt to tire rearoftine carriagein a barrow,and(Inert raised front thepit to (he loadingtray, winiein is tiren swungr-oundto tire brcechnof time gun.

rflre Hydraulic Gram’. —Plate XXIa ——By meammsof tire compress-on-serr tine cradle, a quammtity of tire ener’gy of recoil is utiized insupplying lrydi’aulio pressurefor tine loading gear.

The compress-or’sareeonmnectcdby a systemof pipes,to a s-pr-jugaccumuiaton’,fitted ivitin a tanle,* installed inn tire work ; winch intan-n is conrneetedby ainotirer systerrmof pipes to tine fr’ont and rearhoists. -

Tire compressors(or hydn’anliecylinder’s) areprovided with n-rimswinch am-c connectedto tire erossineadon tire grin, so (mat wheni thegun is fired, tire liquid in tire coarpressorsis forced tlnn’oughr a corn-meetingpipe andmron-retur’nnvalve unto tine aecummnmnluntor,causing tiresprings to be compr-essedandcornsequentlystoningup tine emrergyofrecoil, for tine workirng of tire hoists-.

As soorn as the gnu runs up againa vacuumn is er’eated in tirecompressors,inn liquid is drawn tinr’ouglr a suctiomrvalve fronn thetank andby tine connectingpipe to tire compressors.

A relief valveis fitted to the tank to meet the possibility of tinegunbeimmgfired iviremi theaccumulatoris inn suchastateof compressionthat thereis not i’oopr for tine liquid from tIne eonnpressorsto enter(he ccntr-ecylinderof tine accumulator. When (Iris occurs-tine valveopensan-id dischargestine liquid info tire tank (imnstead of burstimrgthe pipe). Tine spring, Imowever, is sufliciemntly strong to keep tinevalve closedunderordinary conditions-.

Tine lroists ar-c known respectivelyas “front” and “ rear.” Tinefn’omrt one is- fixed in-i tire floor of theemplacement,andis usedto raisetine projectilesIn’orn tire bar’r’ow to tire tn’oflies on the eircnnharn’aiiway.Tue rem- moist is securedto tine rear of tine monnitimrg rind moveswithnt, arid is used for’ raising time pn’ojeetilesfi’onni tine trollies to tineloading tray. Tine hroists- are provdedwitir rams-,the top of eachbeunngfitted witin a bearerfor sappom’timrgtine projectile.

Tire pressum’ctotine hoists is controlledby commtr’oi valves,actuatedby lever inandles,andthe liquid inn the moist cylinder’s, whentine mmiidescends,after raisimng a projectiie, is allowed to cs-capethrough airexlranmstpipe back-to thetank of tire accumulator.

To obtain-i tine initial pressureinn tine accumulatora pump isprovndcd; this could alsobe employedto rester-closs of press-tin-c innthecompressor’s.

A syphomn is provided for reducing as required tine quantity ofinqurd mu accumulatorswlnicln arefitted witin cxtcndimngboxes.

Tine chequer-edplate immediately overtire accumulatorpumnnp isnow fitted with two steel stops-with bolts to limit thestroke of tireaccumulatorpumplever’.

rum0gum niay be loadedat 5 degreeselcvatiorr or’ depn’cssionr inany position of traverse.

* Tine tiruk innns been deepenedby tire additionof nnu extenndinngbox fixed rnbove.An emptyinghole is providedin tire box, winch is closedby a No, 1~plug.

48

Six trohlies-, see page 4~,are provided,which convey projectilesIr’orn tire front to tine s-earhoms-t,

Tire from-it moist may be worked at any tnrne, so that two or tinreeprojectilesmay bereadyto mm over the i’oar hoist.

With this geartine pn’ojectihe is brought inn a barrow arrd laid intine tray of (he front hoist (N) (Plate XIX) in (ho floor of thepit’ two brassplates are fixed to tine coveringplate of the hoistto indicate tine moles in wInch tine feet of tine barrow s-horrid beplacedfor eaelnnatureof sirell—” Arrnoun’-piercinmg“ amid “ commonlyddite.” Tire projectile is- then raised to arid secnrred in nun over-head trolley (N), ~v1niclnis run roundto tire rear Iroist (0), to whelm(ire projectile is transferredand raisedto tine loadingtray, (lie latterbeing swrung into tine br’ccch cinannber’befor’e the for-menis raised.

Weight of accumulatorabout3 terns10 cwt. 0 qr. 0 lb.,, front hoist 0 ,, 10 ,, 2 ,, 0 ,,

controlling valve 0 ,, 1 ,, 0 ,, 5

Gearfiring, Electric..

This gear,winicin is- sirrnilar to that for Mark IV, is amn’angedontine ruount’mng so (mat tine guru cams befired from either side,or fromtIne position finder stalion; in the hatter casea safetyplug is pro-vided for usein conjunctionwith a safetyplug box.

The gear- generallyconsistsof two contact boxes,a pistol grip,safety ping box, two connectorspistol grip, connection cable tobatterybox, battei-y box coatnining four’ electric Le OlancInó cellswith connectingwires, anrd six cables,

The contactboxesare of gunmetal,andarecalled “boxes, contact,sliding; plug, No, 2, andplate,No. 2.” TIne plug is- of gunmetalwitincap,contactplug in two parts, spiral sprimng, insulating bush,andwasher,releasingleverandfiat spring,whIr two fixing screws(auto-matic circuit breaker). TIre plateis- of gunmetal,with contactplate,insulating brush in two parts and fixing screws (automatic circuitbreaker’), andtiney arcfitted to suitablebrackets, The contactboxesarearrangedto break the circuit aurtonraticahlydurimrgtine recoil,areleasinglever’ beingattachedto tire plug contact box by winicin theeonrtact boxesmay be approximatedwhen it is requiredto completetire ‘ircuit,

Tire pistol grip, Mark III, is tine same as that for the Mark IVcarriage. Seepage32.

The safetyplug box is of gunmetal,amid is- providedon the oats-idewith screwedmoles to receivetire cables,oneof which is closed by amnnil-ireadedscrewfor thecablefrom tine position fimndcr.

The connectors,pistol grip, aremadeto receivethe MarkIII pistolgrip andtheelectric cables-, Oneconnectoris attnehedto themolderon tine rng’ht sndeot tire carriage,rind tine otherto tine socketformedin time smoulderpmeeepnmrtle. ‘l’ho connectorconsistsprincipally’ of asocketwnth ,mamnnrngblock andclampirsgscrewto sccmrre tine pistolgrip, anda gunmetal blockwith meansfor attaching tire cables. Aininged coverplate omr tiresocketprotects-tire terminal clips witbin tinesocketwhen thepistol grip is withdrawn.

Tire battery box andelectric battery. Thesearetire sameasfor theMark IV carriage,seepage32. For careandpreservationof electricfiring gearseepage54,

49

Thesix .2111electriccablesare copper wire braided,mvi(lr connectingnutsas for thosefor the Mark IV’ carriage,but their’ numbers,etc.,areasfollows:—

ft. iris.A. No. 2. 8 4~ .. Wirite; from gun to sliding contact,B. No, 2. 18 4~ .. Purple; from sliding comrtact to safety

plug box.C. - No, 2. 11 9 . . Red; from right-hanmd pistol grip cml-

imector to safety plug box.U, No. 2, 16 3~ .. Yellow; from right-baird pistol grip

cornnmeetorto battery.E. No, 2. 6 4~ .. Black; from left-Inand pistol grip cour-

nector to safetyplug box,If. No. 2. I) 6 .. Uncoloured; fr-emlcft4rand pis(ol grnp

connectorto battery.

Tine foilowing traversing arc, inoidfast, pedestals,pivot plates,-pivot plug amid cover,areusedwith this- carriage.

(Plate XIX.)

Anc, Tu~tvsrssING,No. 34 (MARK I).

The areis fixed on below theflange of the pivot plate, at (T), fordescription,seeMark III carriage,page28. A pointerfor indicatingtheangleof traverseis fixed to the carriage. -

HOLDFAST, CARRIAGE PIuDESTAL, No. 4A.

- This lmoldfast (U) is identical with (hat for Mark III carriage,page29. -

PEDESTAL, CARRIAGE; No. 4.

This pedestalis tine sameas for the Mayks III and1V can’ragesandis usedwith six Mark V carriagesmountedat Dover.

- PEDESTAL, CARRIAGE, No. 7.

- Tins pedestal(V) is a mellow in-on casting, castin halvesandbolted together by meamna of junction plates and bolts when tinepedestal is- placed in position. Tine top and inside surfaces-areprepared to take tine pivot plate,and 3 raisingscrewsar’e provided.

The pedestaiis securedto tine work by theboidfast,Weigmnt 17 tons-8cwt. 1 qr. -

Mark II pedestaldiflers from Mark I inn not being provided with‘levelling screws,an automatic correcting gear’ being used instead.

Weight 10 tons 16 cwt.

I’LATE, Pivor, No. 4, CARRIAGE PEDESTAL,

Tins No. 4 pivot plato (IV) is of steel ; with racerandtraversingrack with fixing screws. It is- used on No, 4 pedestalwhir tire sixcarriagesmountedat Dover.

WeightStons12 cwt.. (including bolts).

(9389) -

50

PLATE, PivoT, No, 7, CARRIAGE PEDESTAL.’

This is of steel (W), cast to shape and fitted on top of thepodeslalbybolt-s on eithersideof racer’, (hereare30 boltson theout-side and1.0 inside of the racer. In the cent-reof theplatethereis ahole having a shoulder’ to suit (lie pivot plug. Tinere is- a flangeontire murders-ideto take abearingagainmsttine insidefaceof tine pedestal,while anotherflange easton the outsiderim gives a bearingto clip

platesof thecarriage.A segnnentaltraversimngrack(X) is secun’edabove the clip plate

usageof theplate by’ screwbolts-.Weight 8 tons 16 cwt. 1 qr. (including bolts).

Ptuo, PIVoT, No. 10.

This is of steel,with securing plate and screws. The plug (Y)lras a flange to take a bearing on tine sinonkler of tire hole in-pivot plate and in bushof carriage. - It is preventedfrom tm’nningby a steelfeatinerlet into a feather’way. The p1mg is- preparedfor’tine pipe (Z) of tine byth-mtuhiegear,and is for’ usewith Nos. 4 rind 7pedestalpivot plates.

Weight6 cwf.

Covra, OAnnnnnAoe, B.L,, 9’ 2-nxcr-m, MAeE V., BAmnimerTa (MAInE 1).

Tins is similar to the Man’k III ban’be(te carriagecover rrh’eadydescribed, - - -

TRAY, SPARE PARr’S,

This is inrade of deal or pine,andsub-dividedinto compartments,similar to (be “box, spam’e parts” for the gunin, seepage14, of suchasizeas- to hold thenecessarysparepartsto be kept for the numberofcarriagesin (lie work.

Th~tray is made locally.

CARE AND PRESERVATiON OF CARRIAGES.

See“Regulationsfor Magazinesanti thePresen’vationof ArtilleryMatédel .“

SPECIAL l~S’TRUCT~ONSNOT IN ‘FIlE AIIOVE-NENTIONED REGULATIONS.

Shafts- and spindleshaving nuts securedby taper- pins will bemarkedto correspondwith eacin other to prevent the nuts- beimrgplaced on the wrong shaftsor sphrdles, When necessary,nuts,shafts, or spindles will be marked locally, with a letter or punchmark ins most convenient,

Wlnenover any parts are found broken, defective, or deficient‘which camnrnot be renewed by tire artificer, fresh parts sironnid bedemandedat once, Any damageoccurring at drill or practiceshould be at oncereported,with aview to being madegood ‘withoutdelay. - - -

Covers for tine protectionof thecamsof auto.s-iglntsof Mark IIImountings for Mark IX guns-will be providediocally~

VI)

Care, &c., of Ban’botte ilfounrtin,qs.

- Mark hr. - - -

Before tine erection of tho mounting is commenced special atton.lion must he directedto thefollowinng points

(a) Theracermustbo perfectlylevel.(b) Tire roller patim, upper and, lower teeth of travorsnng rack,

i-oiler’s, and the undersideof tine rack- wlrero (ire clipsengage,must be quite clean, andfr’ee fr’om burrs.

(c) It should be seenthat tine roller rhng hasnot beenbent.

The rollers and axles must be oiled, placedon the roller rimrg,amid tire ring giventwo or three r’evolntions-on the roller path boforeputting on themounting,to makesurethat it runs truly.

Tine upperroller path sinouldbe cleanedarid oiled, amid any burreremoved, the mounting should then be lifted into position. Tinetraversinggear anti pointersirould then be attacired,andoneor tworevolutionsnnadeto see(hatthe nnoiintingtraven’sestruly Tine levelof tire racermay be testedmereby a spirit level placedon themount-ing. Put on tine clips and makeanotherrevolution to ascertain(matthey do not bind on tire clip ring. Tire angularsegmentplatescon-necting tire front and rear bolster’s,andcarrying tire sideplatformsandladders,should be fitted bcfoi’e placingtheslide on ilne ring.- Pai’ticular care nnusthe takenthat the elevatingband,elevatingare,andpinionns areput togctlnercorrectly,or otherwisedamagemayoccur. Tire friction clutch in tine worm wheel should be tiglntencdjust sufficiently to preverni the elevatingarc rtrnmning down itselfwhen tine gum is mniounted. The clutch consistsof alternateplatesofsteel and metal, and their surfacesshould be slightly oiled. Thegear s-mould be elevated,and depressedfrequently to pn’event tinetrunnionsadhering(o thebearings.

Before connectingtire piston rods to time slide, tircy should bepushedin andout to seethat (hey work freely, and (lint tine packingglandsarenot too tigint.

ToMount theGun—Whentine gunInnsbeenplacedin thetrunnionmoles-,securetire elevatingband and arein position, insert tire cap.squaresandsecurethemby pins-, andfix time bail bearingsin positionon the spindles. Tlnen raise tine gun on its ball bearingsuntil itpivots freely in elevating; (heysinould be slightly lubricatedonly.

Hydn’cmnmlicbn~’ers.—Beforcremovinngtine bufferglandsfor renewalof the icatirersa-ndpacking,the gun must be n-an back to themostconvenientposition. The lengthsof packingshouldbe well greasedbeforeuse,taking caretirat ivinen puttirrg them in, tine joints of (mopacking rings do not conic oppositeeachoilier. Greatcareslmoulda-Isobe taken in putting inn tire L leathersinn tire bnffcr glands,tosecthat the edgesenterproperly witlnout beingdamaged. -

In caseswhere it is fomnmnd that the grins do not ran up to tinefronnt stops,a flat surfacewill be flied on tine controlling plunger-,orscr-ew plug of controlling plunger,to allow of tine gun running up tothe stopswitirout violernce.

To Preparefor’ Fir’iu~,—1tunthe carriageout to thefront stops,then removeair plugs from botin cylinders,and pour in on throughone hole until it overflows at both,and draw off ~ pint, i.e., ~- pintfrom eachbufFer, tinen replaceplugs. . -

Oonternts9~gallomns of mineral oil. --

(0389) ‘ n 2

52

Mark IV.

The instructions for the care of tine Mar’k III mountmnng willgenerallyapply to theMark IV’, exceptbuffergear. And. in additionnthe follow imng

Gun Attachnnents.—Topreparetine gun for’ mounting:—Placetirelower lnnnlf of thegun bandin position. Over(hetrunnionsof thegunplace (be sliding blocks-,which are of H section,at (Ire sametimeseeingthat thefront endsof theblocksoverlapthe lower innlf of (Ireband; thensecuretheblocks to tire bandby tire steelscrews. Placetine upperpart of tine bandin position andbolt up.

To Mount the Grmn.—Removethe guide clips from the cradle,release(hepistonrod from tine front bracketsof thecradle, andpusirback tine buffer tube with piston rod until (hero is a clearanceofabout3 feet from the front end of tine bracket, Placethe gunwithits attachmentin thecradle,refix theclips to tine sidesof thecradle,thenpull (hobuffer tubeforwarduntil it engageswith thegun baud,andsecurethepiston rod to tire front transom. It may prove moreconvenient to force (he buffer tube forward by slight air pressn~epumpedunto theair chamber.

When(he cradleis mountedin its bearings-on thecarriage,secure(be elevating arcs to (ire sidesof thecradle,screwon thecap-squares,andfix theball bearingsin position asfor Mark 111 mounting.

To .Preparefor Fir’ing.—Clnarge tire intensifierandmain glandbypumpingin oil at (A1), which is at tine left side of intensifier,let airescapeat (C), whicin is on top of air clnambernearthe front. Thepiston rodof (he intensifier may also be forcedin by a screw clamp,andthe oil thenpouredin at plug (Atm).

Chargetine air chamberthroughvalve (D,) which is at tine rearof air chamber, to a pressureof 200lbs. per squareinch. About3 quartsof oil s-mould,be in theair chamber.

With thegun at elevation,fill the buffer with oil by pumping inat (E), whnich is at theundersideof buffer cylinder, near tine front,lot air escapeat (B), which is on top of buffer cylinderand overvalve(E).

Contents9~gallons of mirror-al oil.

Mark V.

Before theerectionof’ (be mounting is comnrenced,special atten-tion mustbedirectedto tine following points

(i.) In caseswhere1320 30’ traverseon eitherside of tire centreline ‘passing through (he front arid i-ear of tine emplacementisrequired,it mustbe notedthat tine centreline of thekeyway for tinepivot plug s-mould be 2~undiesto tire left rear of the centre line oftheemplacement. Whore more (Iran tins traverseis required,tiretelescopicexhaustpipe s-mould bereplacedby a sphinctergrip irose~andthe traverses-mould be limited by means-of tine traversingstops.

(ii.) Tine stops-for limi(inrg theangleof traverse,which areto befit-ted locally, must be so arrangedtlnat when tine springs on tiretraversingstops-arecompressed,tine telescopicexhaustpipe is clearof tire centrepivot pipe bend.

(iii.) Tine instructionsasto level of racer, correctnessof upperpath,and lire roller ring before mentionedwill also apply to (irismounting. -

53

To ihfount the Ommrriagc.—Tbecarr-iago is mounted on tire liveroller ring, the centrepivot in position, and tire clip pla(es secured;tire carriageshould thenbegiven two or threerevolutionsto seethatit workscorrectly.

To Mount time Cradlc.----Mouirt the cradle in its trunnion bearings,(he elevatingarcsbeingpreviouslyattached,screwon the eapsquaresaird fix the ball bearings-in position on the end of the truunnons.Attach (he Irydraulic pipe to tire swivel joimrt on tine heft handtrunnion, -

- To .M’ourmt time Gnmn.—Beforenroamnting (ire gun it must be raisedurn to skidding,to allow tire lower inaif of tire gun bandsto beplacedinn thecorrectposition. Placethenipperpartsof tire bandsto exactlycori’esponndwith (he lower pnrrts, amnd securethem inflexibly togetherby tire clips on tIre sliding bars; the latter connecttire front arrd rearbands,andaresecuredto tlnemn by steelscrews.

The gun witin its attachrnenrtsis now ready for mounting.Removetire guideclips from (ire cradle, and pus-In (Ire compressorramsinto their cylinders. Run back tire buffer tube err (he pistonrod until it hasaclearanceof about 12 iircircs from the front stops.Placethegun with its attacirmuentsiii (ire cradle, r’efix tine clips totire top of tire cradle,securetine lower cap on tire front band,also (Irenut on the recoil buffer s-tm fling box, and(he compressorrams to tirohugs on the front band; it mayprove convenientto force the buffertube into the recesson the lug of the front band, by slight airpressurepumpedinto tine air chamber.

Caremust he taken Lnefore firing tinat the plates of the frictionelutolr of the elevatinggeararequite free from grit, oil, or liquid, inaccordancewitin instructionswhichwill he foundin tire “Regulationsfor Care and Preservation of War Mat~riel, &c.”; in putting tireclutch together, and to tiginten it up sufficiently, tire power offour menwill be requiredon thespecialspanner.

Fill thebuffer tube in strict accordancewith tire instructions onthe plateon (ire sideof tire cradle,

Mineral oil is used in (ire buffer, winicir will be invariably keptfilled, and beforefilling careshould be taken tirat time gunis witinin‘2 inches fr-em (he front stops. Before replacing tine air.hole plugit should be seenthat as little air as possibleremains in thebuffer’.Tins nray be minirnised by raising tire gun a few degrees frompointblank winilo filling thebuffer. To ensurethecontrolling plungerchamberbeing full of liquid, slackentine gland on the front endoftire piston rod, ainci pump in~liquid. until it ~iassesthegland..

No permanrentalteration should be made inn tire pressurelaiddownfor tine air chamber,andit s-mould be noted that tine pressuregaugeis giving correctrecord.

Beforefiring it should be ascertainedby removalof theair screwsin (ire compressors,that (he latter are fail of liquid, to ensuretheaccumulator being properly charged during recoil. It is alsoimportantthat (he lever of the controlling valve for the front andrearIroists is- in tire centralposition;andall valvesareproperly tightupon tlneirseatings.

Facki’rngs.-.-.By punlpinng liquid into the buffer cylinder, the gunmay be ruin backto a convenientposition for removal of (ho s-mallglandandtine renewalof thehydraulic packing; but for renewal ofthe L leathertine bufferof coursemust be emptiedand (Ire stallingbox removed,tire gun being properlysecuredin a suitablei-umn.baek

positron. The packing is the sen-vice “hydraulic”; it is woveirsquareiii s-ectjonwith a rubbercore, andis supplied by length. For

trso it is cut into finil lengths,which arepreparedandadjustedinn theusualway.

To facilitate repackingof ram cyhnnderglandsof accumulatols,two sleeveswill be used to support tire spiring block.

The ball bearings- of tire cradle trunnions should be properlyadjustedamid keptwell lubricated.

- For careandpreservationof tire electrrccables,seepage~5.To Preparefor Firing.-’-—Clran’ge the inntennsifierandmain gland by

punrpinrgin oil at tine valve nmarked(A1); winicir rs on the rnght sndeof air cinamnberneartire rear, let air escape at (C), which is on topof air chamberneartine front. Tire piston rodof tine intensifier mayalsobe forced in by screw clamp (for description,see page40), andtine oil tinca pouredin at (A’), usinga funnel.

Cliar’gc tire air chambertlnr-ough valve (D), which is- at (he rearof air chamber, to a pressureof 200 lbs. per square inch, about3 quartsof oil s-mould be inn tire air chnannber.

Witin tire grin at elevation,fill tire bufferwitlr oil by puunplnngin atvalve (E), winiclr is nit the under s-ide of buffer cylinder near (hefront, letting air escapeat (B), winch is on top of cyiraderover(E).L-i

9uid for—Ilydm-auhic buffer-----9k gallons of mniimerai oil, normal quantity per

carriage.Accnimrnlnntor system—74 gallons of “fluid, lifts, and jacks,

hiydrnnulic,” mrormal quantity per carriage,but as- (he distanceof tine acenmnrhntorfn’om tine carriageis nbt tine same in allemplacementsadditional fluid will be suppliedwhenrequired.

On cornpletion of (ire first firing, after erection, tire whole of theliquid shall be pumpedoff from tire accnmrrulatorsystemandfilteredbeforehieingreplaced. -

Prolect-ling WoodenCoversfor Roller Ring. -

Tine covers, winich are i’glrt and left, are for protecting (hoexposedpor’trons of (Inc roller path and m-imrg from dirt and grit.Tiney aremadeandfitted locally to cari’iagesreceivedwithout them.

INSTRUCTIONS POll TilE USE, CARE, AND PRESERVA-- - TION OF ELECTRIC FIRING GEAR.

- PISTOL Ginir Man~111, (PlateXXVIII.)

- - - Description and Use.

Tine Mark 111pistolgrip enablestine tubeandtine circuit generallyto be testedat (he momentbeforefiring, in a similar manner to thebattei-y andkey test andfirin~~ -

- The letters-usedin the following descriptionreferto thoseon tireplatereferredto above. - - -

• It can be used on any mounting- fitted ‘with the connector (E)andthenecessaryfiring cells andleads. ‘ -

55

In addition to tine trigger (A), (mere is a hover (B) (called (holever, contact”), the functions-‘of which are

(1) To lock tIne trigger (A), and prevent it being moved byaccident; and

(2) to close tire circuit Llnroughr (Ire indicator (C), by meansoftheplunger (D).

- - In ordertint tine layer may see the indicator disc fronr above,tine coveris polishedon the inside face, rind can be set at any corn-veuientangle.

Tire testingcurrent is insufficient to fire (he tube, but when thetrigger is pnllcd, tire indicator coil is s-Inert circuited, and the tub-cfired.

Cane.r,p~~

0pistol grip, when insertedin the connector andsecuredby

tine clampings-crew,mast not be (ui-nedroundwhile so secured,norany attemptnnadoto removeit from tine connector,umn(il theclamp-ing screwhasbeen fully unscrewed. Before use, (Inc contactleverand trigger should be worked to see whet-herall the parts are freeandinn proper working order.

PrescrvaUon.

The pistol grips, wirern nnot’iu use, should alwaysbe kept in tinewo9denbox providedfor them. -

Tlrey should not be taken to pieces,or interferedwith in airyway, exceptby tirose qualified, and (lien only when niathorised tomakeany specialexaminationor necessaryadjustment.

The contactsmust not be lubricated,and care should be takennot to drop pistol grips, or subject them to rough usage of any kinnd.

• NOTE.

The (rigger should be unniocked when the indicator circuit isclosed. The test for this is ac follows

Having first obtained an indication by depressingtire contactlever (in the absenceof a tube it ~ihl be necessaryto “earth” (hestriker), releasetine contact lever andpub a steadypressureon tiretrigger, then depressthe contact lever till the trigger is released.Tire indicator should not appear;if it does,tine pistol grip must bereturned to store for adjustment.

Boy, BATTiaiY, Lu CLANCIII~, A, 4.cELL.

- - The terminals- s-mouldbe opened out sufficiently to ernsure goodcontactbetweenthem andtheconnectioncableto battery box. Tinelid of (he batterybox shouldbe screwed down sufficiently to makeagoodjoint, andtherebykeepout the damp.

CABLES,

- Shouldbe- free from kinks, and shouldnot be bent to aecomnno-dateits-elf to the mountingwi(lnirr three inches of tine pin contact.If thecable becomesexposedtlnroughthe removal of tine insulating

56

inruterinni, thecalile s-mould -be exchrarrgcd. Tire pinrs contactshouldbe keptclean,and free from rustand oil, andtire endsopenedoutsufficienrtly to errsut-ea goodeoirtuet. -

SnFETY Pauu Box, AND CON-rAces SLnn,INu, PLrG Axe PLATe.

‘[‘ire moles for pun co~rha~t-s,tine slidiurg portionr of plug anrd pinbe,nnnd tire safety plug, sinouid he kept cleanand free from oil. If,whena cableis to be replaced,tinere shouldbe airy wait for replace-ment, or if a cableinas tn) be removedfor any period, tire holes forpun contactsshroulci be pluggedwitir cotton waste to keep out dirtandmoistinre.

• Co~xacTon.- • - -

Tire Inoic~for pin contacts and tine clip contacts-should be keptclean and. free from oil. If clip contacts- siroultl open out at anytime, the block securingcableshould be takenout, and tine clipscloseduntil tinny make a good contactwith tire terminals of thepistol grip. Wireatire pistol grip is removed, care should be takenrtirat tire platecoverfalls andcoversthehole.

GENERAL.

All pants making contacts shreWd be kept clean, and free fromoil, rust-, or moisture.

PUMP, RUNNING BACK, PORTABLE, MARK I.

(JAInRIAOI-:s, GAIIRISON, B.L. 12-INch; BARRETTE, 10-INCH, MArnc IV,9’2-INdn, MARKS III, IV AND V. -

- (Plate XXIX.) -

This pnmp is usedfor runningbacktireabovemcintionedcarriagesat drill, &c.; ntis of the ordinary double-actinghydraulic type,aridis desigunedso (mat tine liquid pressinrewill act err tine pistonrs of thehydraulic buffers. It is containedin a portable tank, on wireels, sothat it maybe conveinientlymovedfrom onecarriageto another.

Tine prnnrp if-selt consistsof a nnetnnl casting (a, a) fitted witlnplungers(b, b) which, whenactuatedby tire inandles(c, c) tirrough(ni), draw tire liquid tirn-oughi the inlet valves(e, e), andforce it pasttine delivery valves tlrrough tire pipe into tine hydraulic boilerson’ buffer, as tire casemay be; thepressureactirrg on (he pistonsof tire buffers causestine carriage to runr back. Whenn ruin back,thecarriagecanbe retainéniin thatpositiou by closingtine stopvalveon tine buffer.

The “ p~p~s-copper, conncctir~g,i-inch lore,” used with tire“pump,air, double,” and“pump air or liquid” inn-c alsousedfor corn-necting tine portinble running hack pump to the above mentionncdcarriages.

57

Adaptersareused.for cuirirectinrgtire COPPC~pipes to the pun-tablepunup. -

Before commencingto primp a carriage back, the tank must befilled to a depthof 6 iinclres witir the same descriptionof fluid as isusedin tire hydraulicbuffers.

Wireathecarriageis run in, the liquid is forcedhack again fromtlre hydraulic buffer to the tank througir the return valve (f); thisvalve mustbe closedbeforecoarmencingto pnnnnrptire carriageback,anti,openedto run up.

Weight S cwt. 1 qr.

Tire following articles,referredto above,an-c us-cdwith tire punnip,as indicatedoppositetheni :—

Pump,running back,portable (Mark I)

Valve, stop, “A” (Mark I) Steel aird bronze.Adapter, pump, running G.M., witir ieatherwashier;for’

back, portable (Mark I) use witir copper connectingpipes,~-inclr bor’e.

Pipes, copper-, coninectimng, Externaldiameter’~-inchn.~-irrch boreby 10 feet :—

With unions (Man-k I) - ~‘orusewith pump,air, double- WTitIr unionandplug (Mark pump air or liquid; aird

1) portablerrnnningbaekpunnp.

PUMP, AIR OR LIQUID.

(PlatesXXX and XXXI.)

Mark I: Tire punnpis double-acting,andis intendedfor chargingtire cylinders of mountings with fluid or eonrpressedair, andreservoirswith compressedair. It is- containedinn a metal tank (a)2 feet 0~inch in iength and 1 foot 2~ineir in width, bolted to anmom stand,which is securedto a wood platform. A canvascoveris provided to preventgrit and dirt getting into tire working partswhennot in use.

Tire pumpconsists-principally of the following parts:—

(1) High ann low pressureplungers-; theformer (d) is fixed to acrossbar(e) at the top of tine tank, havinga gunmetalwasinor insertedbetweentine seatingandtheL leather,ann tire latter(f) to thebottomof the tank.

(2) Suc(ion,’intermediate(h), anddelivery valves.(3) Metal cyiinnder’s (g), formed nit one end to receive(ho higlr-

pressurepluirgers,mud at tire other tire low-pressureplungers.(4) Outerplnnngei’s(i).(5) Overflow -vain-es(A~).(6) Cock (1) for adnnittinrgair or liquid -to the pump.(7) Double.lnandlelever for actuatingthe cylinders(s).

Man-kII differs from Mark I generallyas follows :—Tlre tank isof an increaseddepth, in order to ensuretine higin-pressureplunger-sbeing.kept wet. Certain of the componerrtpnu-[s are of “Delta”Metal, to decreasetire liability of corrosion.

58

- Stand.

Tire stand,whicin is of castiron, 7 inclres Inigh, is attaciredto awood platform, 5 feet P incireslong by 3feet 5-~-incheswide.

Adapter,A.

Tins adapter,winch is for use with (he comnrnoetnrngpnpesof tine“Pump, air, double,” is a metal casting~6~S incheslong, with corn-nectiomnsto suit tine disclnnnn’ge nozzle of (Inc “Pump, air or liquid,”andtheunions of tine connectingpipesof the “ Pump.air, double.”

Adapter,B.

This adapter,winicln is for use with tine connectingpipes of hePump, air on- liqinid,” is a metal casting, 4’45 incires long, wrth

connections to suit tine unions of tine comnnectrng pnpes of the“Pump, air or liquid,” annd tire “ Connection,indicator, pressure,in usewitir disappearingnmnountirugs. -

Pipes,connecting.

These pipes are each 10 feet long, two with unions at eachend, mind two with a plug at oneendmind a union at tire other.

Spanners.

Time spanners,are of steel, formed to suit thevarious parts oftine primp, &c,

Arrangennnent of Cornmed ing P-ipe~.

The primp is connected to (Ire cylinders of mountings, or toreservoirs,by moansof connectingpipes, whicir may be either thosedescribedabove,or thecournectingpipesof tire “Pump, air, double,”wlnnclneverareavailable.

When tine connecting pipes of the “Pump, air, double,” areus-cd for connectingto thecylinderor reservoir,tinrongir a separator,theadapter(A) is first screwedon to (ho dischargenozzle of the“Pump, air or liquid,” and thepipes mire then connectedasrequired.

When the pipes of the “Pump, air or liquid,” are usedfor con-noeting—

1. To tine cylinder, tIne adapter (B) is first screwedon to tire“Connection,indicator,pressure,”in usewith themounting,andtine pipesarethen connectedas required. -

2. To tire reservoirthrougira separator,threeadapters, (B), arefirst screwedon, oneto the nozzle of the inlet valve, one to(Ire nozzleof tire out-let valve of theseparator,andoneto thenozzleof thevalve of the reservoir; the ~ arethencon-mreetedasrequired.

Methodof Use.

l’nnrnping Air.—Wlnen charging -with air, the lover working tirecook (I-) is turned to tire side of tine think marked“air.” On tineup sti-oko of tIne cylinder,-air is drawn through (he cock, along the

passages,andthroughthesuctionvalve into tine low-pressurecylin-der (a). On the down stroke of the cylinder tine air is- forcedthrougin tire intermediatevalve (in), arnd compressedinto the higIn-pressurecylinder (o), andonn the nextstrokeof thecylinder is forcedthronrghtire deiivery valve andpipe (p) to (Ire cylinderof tire mount-ing or reservoir.

When first commencingto pumpair, tire areaof tlre low-pressure -

eylnnderscanbeincreased,and, consequently,a largervolume of airpumped,by conrnecting(Ire outer plungers(i) to tine i)ottonii of thetank. When tire pressureis found to be too inigin for tine primp to be~,voi’kenIby this arrangement,tire outerplungers(i) are connectedtoand movewith tine cylinder’s- (g). The outer plungers (i) are con-nectedto the tank or cylinders- by moving a lever on eacir s-ide oftIre tank towards tire words “low pressure”or “high pressure”respectively. The connectionsmustnot be madeuntil the cylinder n’s onthe bottom stopon that side

Punnping Liquid.—Whonpumpinngliquid, tine leverof tine cock(1)is turnedto tire side of tire tank marked“liquid,” and (he plug oftheoverflow valve is unscrewedsufficiently to admit the liquid in (lietank into tine low-pressurecylinder (a). On (Ire up stroke of thecylinder, the liquid is drawn through tine intermediatevalve (in),which in (iris case beeormrestire suction valve, into theinigin~pressurocylinder (o), and on tire down stroke of the cylinder is forcedtirronigh tine delivery valve and pipe (p) into tine cylinder of (lremounting. -

Belorrging to tire pump ar-e 4 connectingpipes,4 adapters(1 (A),and3 (B)), and4 spanners,Nos, 157 to 160. - -

We~gint8,~ - -

- Weight. Tonnage.cwt. qr. lb. Tons.

Pump -. .. .. 3 0 0 0’3695- Stand, with platform .. 3 2 3 0’451

Maximum working pressure,lb. per squareinch, 2,000. -

PUMP, AIR, DOUBLE, MARK I.

- (Plates XXXII and XXXIII.)

Tire pump is intended to clnai’ge tine cylinders of mountinigswitin fluid or compressedair-.

It consistsof two gunmetal cylinders (A and D) of differentdiametersin onecasting,with a baseplate,on tire top of winich anironframeis boltedto form a tank (C) for the fluid white beingpumped.into tire cylinders. The pump cylinders- are fitted with plungers(D), actuatedby a rocking lever (li), winch is supportedon brackets(F) rivetedto the tank.

Tine pumpis in duplicate,andis boltedto aniron beddingplate(G), which is securedto the floor by clips (H) andcottars(I). It isworked-by two 1’ handles,winch are attacired to tire rocking lovers,andareconnectedat tire top by a link to ensureniriform action.

When charging tire cylinders with fluid, tine fluid is drawntlrrough suctionvalves from the tank imnto the irnrgc pump cylinders

60 -

(A), anrd err tire down stroke of tine phunrger’ is forcedunto tine s-mailcylinder tirrourlr delivery vaives. Winen chargingnvntin air fire eon-irection betwc~nthe tank andthe cylindersis cutoff by closing thevalves (K) incur- tire copper delivery pnpes, and tire air is drawntinrough a suction valve at the bottom of the largecylinder. Tinsvalve is nevercnnt off, but is more lneavnly weightedthan thewatervalve, arid-wincnn tire waterpassageis openr lrqund is drawn in in pre_fererreeto nih-, providedtine strokesarenot too jen’ky.

Eitherprimp can be disconnectedif necessary,arid worked jade-pendently; tire delivery of either is cut off by closrngthedeliveryvalve. Whcu this is closed,of course tine handlemust inc dnsconn-nrectcd,so that tine pump cut off nraynot be worked.

Tine pump sinould be kept inn stonewitin tine tanksfull of lrqurd,mmd so usedwirotiner air or liquid is beingpumped.

To keeptire leatlrei’s inn good order’ tirey slnouhdbe sligirtly underpressure. To obtain tins, screwonelength of tine cappertubing ontire delivery nozzle(J), andon to tire other end of tire tube fix theblank cap (with packingleather). Tiren work tine pump with tinewater valves- closed until it becomesdifficult to movethehnandhes,when tine punrpmay be left—tine air in the tubing serving to main-thin tire pressureobtained.

Whom standinglongin storethepumps-mouldbetried occasionally,to s-ce that tire pressureis still on.

A coveris fitted. to the iron bedding Plate to protectthe smallpipes which connectthe base of the pump to tire three-way con-nection.

Wincnit is found tirat the cylinders of the pumpsmire defectivefrom excessivewear and scoriurg, they’ will be bored to a larger’dnameter,according to tire amount- of wear, and fitted with newplungers, and L Ieatlnen-s. Tine thicknessof (ire cylinderswill notallow, mt tire most, of more tiran 0-15-inch ennlar’gement,and tinsamountmustnot be exceeded. Onn (be enlargementof a cylinder,tine word “large” will be stampedoir tire new plunger.

Belonging to tire pump are4 connectingpipes,5 spamnners(Nos.96 to 100) and 1 lifting loop.

Weight, 4 cnvt. 1 qr.Maximum w’orkimng hrr’cssune,lb. per squareimneln, 2,800,

Pt~MP,TESTING COM I’RESSEI) AIR RESERVOIRS,

(Plate XXXIV, Fn~~nnres1, 2, and ~L)

Tine bodyof thepump (a) (Man’k I) is of gunmetal~vitir steellever.arrn.h coirnnections,nind copper’reservoir(b). It is secur-edto awoodbaseby four- boltsanrdnuts, tire woodbaseformspart of the box Irereafterdescribed.

Tineplunger(c), i.s of alumininrmbronze,mmd workst-iirou~hametalglandscrewedmite (be top of tire pumnip cylinder,anda U leathner tomakea tight joinrt; tine leatineris containedin then~iandrecess. Tinelower pant of fine cylinder is closedwith a screwedbusinwitin leatiren.’wnishner; this bus-Incontainstineinlet valve (d), which is groovedontheexterior to give passageto the water from tire reservoir,tire lift of

61

tine valve beingregnilatedby ascrewplug in top of themetalclosingbush ; and the latter is screw-threadedon tire underpant to takethemetalconnectionof thecapperpipe of reservoir.

A recessin theheadof tire pumpcontainsametaloutletvalve(e);tins valve iras grooveson its lower exterior, to allow tire water topassout to (he compressedair reservoir,arid. a brorrze spiral springon its upper orterior keepsthe valve in its seating; the recessisclosedby a scm-ow plnng (f), amid leatherwasirer.

The channelfrom theoutlet valve is continued tbroirgir a metalbasin (g), with Ieatlrerwasher,(ire basinbeingscrew-tiireadcdon tireout-sideto receivetheconnectionof tire delivery pipe.

The reservoir (b) (winch is securedto tine side of tlne pump byametal baird and screws) is of copper,witln a connectingpipe (In),soldered to it, the other end of the pipebeing connectedup to thepump, as before stated. Near the bottom of the reservoiris a wirestraunner.

The box (Mark I) irasa baseboard witir afootboardhingedto it,for tire operatorworking the pump to standon so as to steadytinepump, andwhich is folded under when not in use. The cover oftire box is provided with two metnnl lifting handles,andis put erroverthepumpandsecuredto thefootbonrdby fourthumbscrews(i).Tire pump with lever and “Gauge, pressureNo. 4,” page63, arearrangedasshownby (he dottedlines in Figure 3, tine hover (In), andpressuregauge(1), must be securedin position in tine inns-ideof thecoverbeforethelatter is put on.

Dimensions,~‘c.—The box is 196-inchesdeep, 13’S-moines long,and8 incheswide. The pump,with box complete, weigirs51 lbs.,andwith pressuregauge55~lbs.

Topreparetine pumpfor mnse, ~c.(1.) Remove(Ire coverof thebox andextendthe footboard.(2.) Attach suitablelengths of the connecting pipesusedwitin

tine ~ Pump, air, double,” the “Connection, pressuregauges”andthe “Gauge,pressure.”

(3,) Partly fill tire pumpreservoir(b), with water.Action.—Whentheplungeris- raisedby the up-strokeof (ire lever

tirewateris suckedfrom thereservoir(b), througintheinlet valve (d),andfills thespacein the plungercylinder. Onr tine down-stroke(heinlet valvesclosesnuderthe action of theplunger,andthewater isforced out through (ho channel (ni), (he force raising the outletvalvo(e), whichallowsthewaterto passto tirecompressedair reservoir’.On completionof this aetionfine springon theoutletvalve forces(hevalvedown on its- seatingmind preventsthereturn of water. On tirenext up-strokeof thepump iover more waterwill be suckedinto tirepump, stud so orn till tire required pressureper square inch, asregisterediii the pressuregaugefor use in testing the compressedair reservoir,is obtained.

RESERVOIR COMPRESSED AIR,~ MARK II.

(Plate XXXVI,)The reservoiris for keepingin reservea supply of compressed

air for re-chargingthecylindersof disappearingmountings-and airchambers of Barbetto mountings. It is in tino form of a flask.

* TheMark I reservoir is not so strong is tire Mnnrk 11; it is not- issirrd forsrn’vice with tlre~ecnmrm’isges. -

62

witin a short nook at onr~end, whicir is mow being strenrgthenedby iraving a steel cohiar screwed on the outside. The neck isfitted with a stop-cock (a), svinich is used for charging and dns-chrarging tine reservoir; the outer end of tine cock ns screwed totaketine nut of the cinargiing pipe; thestop-cockis inn two proces,sotinat tire pressureinn tuereservoir’can be cut off, andtire outerpart (5)removedwhen (ho reservoir is packed for transport.

‘l’ine pn’essmnn’ein tire reservoir s-mouldnot exceed2,000 lb. on (Incsqnral’emom wireu mm om’dmnar’y use,or whren travelling.

It s-mould be r’ennennberedtirat mor’e work will be got out of areservoir, if it is openedto tire cylinder with the gun up, inn thecase of disappearingcarriages,than with the gun down, and ingetting up pressurefr’orn zero with the andof n’eservonrs,it will benonennoroquickly if tine gum is allowed to rise.

A prcservimngping, valve union, valve key witir glandandthricegn.’annnnnctsareissuedwitlr tire n’escrvorr.

(lore and 1~,esern’utiouof Reservoir. Mark 11,

Seealso “Regulationsfor’ Care ansi Preservalionof Artillery Materiel.”

As tire m’eservoirs mayo to sustain a inigin press-mirewiren fullycinnnrged, it is essentialtinnn.t tlrey s-mould be periodically tested toascertainif they arc inn a serviceable eonrditiorn, and annealedtol’n’esen’ve tine tennacityof tlre material.

rLIlne tcsting will be carriedout locally biemrmnially,by pnmmnpinrg ininydm’auhio pm’essureup to 3,000 lb. per squareinch; any reservoir’sfailing to p~sstins test,on’ showing any pormanemntset or leakage,must be returned to -store for transmissionto Woolwicir. Beforeandafter testing,tine outsideof tine reservoirnear(Ire centremustbennceuratoiygaugednit four points,andtire measurememntsrecordedona Iris-tory sheet,wiricir is supplied with each reservoir; (Ire date oftire biennialtest mustho stampedon tine resor’voir.

Tire reservoirs~~‘i11be annealedeverysixth year,for mvhicir purrposethey must bereturnedto stom’e for transmissionto Woolwicin.

Eachn reservoir’will havea registerednunrberstamnpedon it, alsotire mamrufacturingMark or’ name,tire numeralof thereservoir,dateof issue,andanrcahirigamid testmarks,with dateas under’

No. 56 Thestampingof tire dateof test on thereservoir’mustJ, 13. mind Co. err mo accountbe done until tire m)mcssurohnas bcerr

II let out. A inistory shneet(Army Form G 881) will1899 be issuedwith each reservoir, This sireet is intended

(A) 10,3,09 to preservea eomuphctehistory of the reservoir from(‘1’) 11.3,09 tire dateof issue from tine &yah Arsenalto its final

u’etur’n to s-tome. Tire biennunltestsmmd m’o-nrnrneuhing will be r’eeordedon (iris sheet,andnniso anytininngcalling for specialreman-k. Tire sheetmustalwaysbekept with the reservoir’,andreturnedwith it to store.Report of the emrtriesmadein tine s-meetare to be sent to tire ChiefIrrspoctor, Woolwieh,(irrouglr tire G.O.C.on the completion of tinebiennial testing. -

Filled reservoirson R,A, chargeshouldbe markedwitir theword“filled,” andwitlr (ire amountof mnoos-sureiii tirem.

- Beforereturning reservoirsto store,they thust be first emptied,andtine word “enr-rpty “ stencilled on them. - -

- 63

Reservoirsnot onr R.A. cirarge should. be stored empty, and somarked,

Caremustbe takenwinen removing reservoirs(hint they are notthrown down or roughly handled, To pn’otect thorn from jar, three4-incir tarredrope grumnne(swill be placed on (ho reservoirs;andin inot climates,wadmiltilts, or such other suitable oovering as maybe available,will he used,when requin-ed,to protect them from tineraysof tire sun.

SI~PARATOR, AIR PUM1’, MAR K I.

(Plate XXXVI.) -

tihe separatoris used. to separatetine moisture fi-om tine air’

during the processof pumping unto tire m’csorvoir, It consistsof acoppertube,1~memosin diameterand 3 feet long, screwed at bothends. At one end of tire copper tube a mvrouglnt-iron mend(c) is-fitted, fmnrnisired with inlet and outlet valves of gun-nietal, and a~-ineh copper pipe (d), whielr carriestine air’ andwaterin adownwarddirection into tire sepam-ator. At tine other emrd of (Ire coppertube isa ivronrgint-iron foot which is fitted. with a drain.cock (e) of gun-rnretal. The separatoris connectedrip betweenthe pump and tirtrreservoirto be charged,andthe moisture of tire air, winiio passingthrough tine copper tube, falls to the bottonr and is blown offfrom time to time during (Inc operation through the di’ain-cock.When tire separatoris used,it must be always fixed in a verticalposition, tire inlet andoutlet valves-beingat tire top.

GAUGES, PRESSURE.

- (Plate XXXVII.)

Tine gaugesgemneraily consistof ametal cylinder’ (a) comntaininrgthô nroelnanisni,winch is closedin by a 6-inch dial (5), anda sheetsteelplateat tine back. -

Tine mechanismconsistsof a metal beaningwinch is attaelredtothe cylinder and dial plate; (mat part of the bearing winch isattaclned to (ho dial plate is flattenned, and suitable bearings aresecured to it for fine spindle of tire dial inrdicator, andfor’ a crank(e) throughwhich the indicator is actuated,winihe tinat part (d) of thebearingwhich is attachedto tire s-ide of tine cyiirrdcr hasa cliannnelwhich is- in cointinuation of the conrnection(e) (for’ “Connection,pressuregauge“or” Connection,four-way,air pump“) ; in onesideof this ehrannelis a hole in which oneendof a short phosphorbn-onzetube (f) (No. 4gaugeInassteeltubing,owing to thehigherpressureitis subjectedto) is insertedandsoldered,tine tube is slightly flexible.and is boat portly round the cylinder, its opposite endbeingclosedwith a cap(g), to which is attacheda cranknn’rangementworkinrg onapivot (h),andwhich hasan adjustablearm attachedto a segmentalrack (i) in gearwith ~rpinion au tire spindle of tIne clinT indicator (y).

64

Each instruunemntis provided with a dial indicator’ stop, fixedeitheron thedial or within againstsomepart of tire mechanism. -

Therearefour patterns,and eachone is constructedto register’the hydraulic pressureper square incim, which togetherwith theirrespectiveservicesareas follows -

No. 1 (Mark I) from 0 to 350 lb. per square inch :—Porcarriages,garrison,barbette,B,L. 9’2-incln, Marks IV andV, and10.inclm, Mark 1V. -

No. 2 (Mark I) for 350 to 1,000 lb. per square inchFor carriages,garrison,disappearing,13.L., 6-inch, 9’2-inein,and 10-inch (carriage up); R.M.Ti. high angle; also com-pressedair reservoirs.

No, 3 (Mnnr’k I) for 1,000 to 2,200 lb. per squareinchFor carriages,garrison,disappearing,B,Ij. 6-mom, 9’2-ineh,and 10-inch(carriage clown); alsocounpressedair reservoirs.

No, 4 (Mark I) for 1,800 to 4,500 lb. per squareinchFor pump,testing compressedair reservoirs.

Actionn.—On liquid pressureentering the bent tube within thegauge,it graduallyinclinesthe tubeoutwards,thus thedial indicatoris actuatedthrough the pivoted crank and segmentalrack. Whenthe pressureis removed from tine instrument, tire dial indicatorreturns to stopat tine normal position.

Tire following steel spanners are used with tine abovegauges,&e.

Spanners—No. 103, for gauges,pressure,Nos. 1 to 4; also pressuregauge

connection,No, 104, for connection,pressure,gauges,and filling valves

disappearingcarriages. -

GAUGE, PRESSURE,DEAD WEIGHT TESTING.

MA1nK III,

(Plate XXXVIII.)

Witin (iris design of gauge“gauges,pressure,Nos. J to 4” canbe tested,or pressuresvarying from 0 to 4,000 lb. per squareinch,Plungers of varying areasare provided, so that tire same set o~weightsmay bemadeto give four different series(oneseriesfor eachplunger) of pressuresper squareinch. -

Tine gauge consistsprincipally of two hollow cylinders directlyconnectedto eachotiror, one vertical (a) and the other horizontal(b), a ram (e), four plungers(cI, e, f, g), reservoir(In), witin cover(s),carrier(1), weights,A to G, intakevalve(1), andunionconnection(m),

Tine horizontal cylinder’ is fitted ‘with a screwedn-am which is-actuatedby acrossirandle (n), leakagebeing preventedby a glandwith U leather’. Tine mole throughthe vertical cylinder is of fourdifferent diametersto suit theplungers,eachone beingof twice theareaof tire onenextbelow. The reservoir surroundsthe lower por-tion of the vertical cylinder (a), and tine screwedintake valve (1)controlstheadmissionof oil from the reservoirto theramelian-nher(k),anderr to tine gaugetirrough tine hole (o), - -

65

Thefour plungersprovided arc of four’ differeirt lcnrgthns,oneforeachsoctiornof thevertical cylinder, in wirichr it accum-atelyfits; caciris conedat tine fop, and provided witin a cross-piecefor’ tire attacir-moat of thecarrier.

Tire carrier (i) is in tine form of a hollow cylinder, openat tinebottom amid closedat tine top by a cap,tine interior being conedso asto centm’eitself ocr the top of tine plunger,and slotted to engagewithtire cross-pieceof tine plunger, so (mat upon tire carrier beingrotated,the motionmay beconveyed to tIre plunger. Tire lower portionr oftire can’rior is flangedto receivethe wcigints.

Tine weightsare in the form of discs,eacinwitlr a centralhole tosuit (hecarrier; tirey consistof tine following

Weightsmarked. No. Proportionalweight.A. 1 113 1 - 2C 1 3D 1 4E 1 10F 8 20G 1 15

The arrangementsof theweightsin sizepermitof avariation of—’‘2-i lb. persquareinch from 12~lb. (weightof carrier and plunger)

per sq. in. to 500 lb.5 ,, ,, 25 ,, ,, - 3000 ,,

10 ,, ,, 50 ,, ,, 2000 ,,

20 ,, ,, 100 ,, ,, 4000

A suitableconnection(nn) is providedfor attaching tine pros-sal-ugaugeto be tested,andto permit of tire dial facing the operat;or.

Tine gaugeis securedto a baseboardsuitabloforfixing to abeurcin.A wood coveraird two spannersareprovided.

Spanners.

SpannerNo, 239 is used for gland, pressurecock, intake valve,andsmall connectingunion.

SpannerNo. 2-ic) for union, connectinglarge, andramgland.

instructionsfor Filling,

The ram being home,removethe weights,can-i-icr’, aird plniirgei’,and openthe intakevalve; pour“oil, lubricating, for cylinders ofgasandoil engines,”into theverticalcylinder, andwithdraw tire rainslowly (maintainingthesupplyof oil) until a spaceof about9 inchesofthe ramis visible, continuethe supply of oil until it appearsin tirereservoir’andconnectionfor pressuregauge;close intakevalve andfill the vertical cyiinder, force theram in to engagewitir (ire screwedportion of thehorizontal cylinder,and screw in until only aspaceof4~inchesis visible; replaceplunger,carrier,andtheweightsrequirpd(seeTable).

This- operationshouldbeperformedslowly and carefully, to allowtime for theescapeof air, as far aspossible.

Instructionsfor Testing.

When aboutto screw ram homefor pressure,(ho carr’ier shouldbe slowly rotated, and tire motion maintained till tine weigirts arelifted, whenthegaugeshould registertherequiredpressure,

(9389) . E

66

~Viiern the ram is screwedinome, open intake valve, and slowlywitindi-aw n-am till a spaceof 4~inches is visible, then closeintakevalveandproceedas before.

To sleanout.—Unscresvgland and end plug, removeram andallpackings,andeI~anwith pmnrcnffln.

Contents,—Abomnthalf a pint of oil, lubricating, for cylindersofgasand oil engines-,is requiredto chargethegauge.

Value of weights ‘in lb. per sjuan’e inch in relation to theplunger’ vsecj.

A

Weglnts. P!rrn~er,~

,.,... 2-~

LargeIntermediate

Plunger.

SnnnnllIntcn’mediate

I lunger.Pluingor.

5 10 20B 5 10 20 40C 7~ 13 30 601) 10 20 40 80F 25 50 100 200F ..~... 50 100 200 400

a .. - ,. .. 37~ 75 150 300x .,.... l2~ 25 50 100

= lb. pen’ squareinch dueto carrierandplunger.

Tablesshowing tire arrangementof ~veighrtsmnecessaryto obtaiu agiveir pr’essur’ein lbs. per squareinch,

Eaehrtable is compiledfor- usewith tire particular’ pressuregaugerrnrd plungerquoted.

Tine lbs. pressureper square inch duo to (h-ne weight of tIreplunger’ and carrier’ (wInch is representedby a in tine Table) mustalways-be includedwinon calculatingtire weights,

TABLe l.—Pirassnjgg GAllon No. 1,

rl~rger: Large. a = 12~lbs.pen’ s~nareinch.

Weig1nt~. lbs. por~sp.naroinch.

~ L~ B C D E G — F 2F OF 4F SF OF12i 2~ 5 7~ 10 25 0Th — 50 1(0 ]50 200 230 300

— A 15 65 115 165 215 265 315— — — 0 — — — 20 70 120 170 220 270 320— B 0 — — — 23 75 125 175 225 273 325— — — C D — — 30 80 130 180 230 280 330— — B 0 1) — — 35 85 135 185 235 285 335— A — — — F — 40 00 140 190 240 290 340— — — C — F — 45 05 145 195 245 295 345

G 50 100 150 200 250 300 350— — B — — — U - 55 105 155 205 255 305 —

— — — — P — U 60 110 160 210 260 - 310 —

.r100

A20

B40

C60

3)80

F200

U300

2F800

3F1200

4F1600

SF2000

— A — — 1) — — 1000 1400 1800 2200F — 1100 1500 1900 —

— A — — I)—

—

U(1-

12001300

16001700

20002100

—

‘—

* Two tables are girenr for No. 3 PressureOnirge. Table No, 3 s1iow~aconstantvariationof 50 lbs. persquareinch up to 2,000 lbs., and Table 4 showsa constantvariationn of 100 lbs. nnp to 2,200 lbs.

(9389)

67

TABLE 2.—PinessuneGAUGE No, 2.

Plunger: Large, inlermecliate, x=25 lbs. per square inch.

Weiglrts. lbs per’ squareincln.

x A25 J 5

— A— A

—A—A

— A

— A— A

1110

13

B

B

B

~11

B

B

B

C15

C

C

CC

P20

1)P3)

PI)1)

PDPP

F 0so 75

F —

F —

—a— U—U— U— UF UEUF UF UEUF U

3F300

350360370380390400410420430440

41?4-00

4504604704804005005105205305-1-0

51?500

550500570580590(100010620630640

61?600

�50(160070(180600700710720730740

71? SF700 800

750 8507(10 810770 87(1720 880700 800800 900810 010820 920831) 0308-10 9-10— 050— 000— 010— 080— 900—100)

TABLE 3—GAUGE PRESSURENo. 3.

Plunger: IntermediateSmall, a=50 lbs. per square inch.

50

A

10

A

B20

BTI

BB

BB

C30

CC

CC

CC

B

40

P

F100

FF

FFF

Wciglnts.

U 41? 51?150 800 10(X)

0 1000 —

U -1050 —

— — 1100— — 1150— - 1200U — 1250a — —

U — —U — —

OF IF’1200 1400

1300 15001330 15501400 16001450 1650

SF1600

1700175018001850100010502000

TABLE 4.—GAUGEPnassumnnNo. 3*,

Plunger: Small. a-=100 lbs, per square inch.

Weigirts.

68 -

TABLE 5.—GAUGE PRESSURENo. 4.

Plunger: Small. w=100lbs. per squareinch.

Weights.

a’100

A20

B40

C60

D80

F200

U300

4F1600

(IF IF2400 2800

8F3200

— A — — P—

—

—

—

—

18002500

—

—

8000—

—

—

—

—

A—

A

—

—

B

—

—-

C

P—

1)

FFF

—

—

U

2000—

- —

—

—

—

—

—

—

—

35004000

Instructions for using lire Tables.

llavinrg found tire number in (Ire table representingthe lbs. persquareincir required,placetire weigirt or weigints s-hewnat (he Ireadof’ tine column (in whiichr thenumberoeeun-s)on tine carrier, (ogetirorwith tine weiglnt or weiglnts indicatedby tine letters on tine samelineto tine left of tire table.

Example.—Requiredthe necessaryweightsto indicate 285 lbs.per squareinch,

By referenrceto theTable 1, (he following weigirts- arerequiredon tine Carrier:—SF + B + 0 + 1) + a = 5 x 50 + 5 + 7~+ 10 + 12~= 285. -

AMMUNITION.

CARTiuDGES,

(Plates XXXIX to XLIV.)

Nature. Wiren filled.

L.8.Gunsforwhichused,

. I Length snotCartrrdge to exceed

Diameternotto exceed

inches-,

~8‘25 largeennd.tG’4 small end,

18 ‘25 largeend,1 o’o smallend,

825 largeenrd.67 small end.

1 8 ‘25 large cmnd,159 srnrall cnn!.

8’O

80 -

i0’Obody base1 ‘098 1 ‘2191 ‘098 1 ‘219

IlL., 0’2 inch,Marks :—

ix {~~ to {

~‘‘

-1~th {‘‘

X to XV ..

IX to Xv .,

50-lb. cordite,size44, 4-charge

25-lb. ,, ,, ,,

3~,4 charge51 lb. 8 ez.cordite,sizes-44arnri25 lb. 12 oz, cordite, sizes 44

annd 3~, -1 clnarge

4 clnarge60-rb. Cordite, M.D., size 37,30.lb. cordite, M.D., size 37,

I charge -

54.lb. prismn, bro~vn,~ clrnrge

Airrring rifle, I eleciric ..lini. ,. ,, blank..

—

inches.

33’O

~} 33j3 •

} 16-5}~~

} 16 ‘25

] 625oyer all,

5’O5 ‘0

I

‘39

CARTRIDGE, B.L,, 9’2-incnr, 50-LB. COIrDITR, Snzn 44.

Pine 50-lb cordite cartridge is of No. 2 classsilk cloth, witin tenhoopsof 0’65-inelr silk braid. It hasa lif(ing bocketof 1-incir braidat the s-mall end, and a 1’5-inclr wide silk braid lifting becket isstitched to tire bag in four places near tire primed end. Thelarge end has a silk cond becket winch passes througin tinecentro of’ tire cartridge and tied to a s-ilk braid loop, s-centredto two silk clotin discs in tire small end of tine cartridge.Tire elnargeof cordite is built up, tied witir sewingsilk andplacedin (he bag, an annulars-pacebeingleft at oneendof eachchargefora primer of 8-oz. R.F.G.2or new blank F.G, powdcn’, containedinn arimrg formedby silk cloth andsinalloon laidovertheendof thecharge,andsewnto thebag, tine end being enth-elycovered;tine pn’imer isslitelnedacrossin four places. Tire cartridgeis- closedby s-ilk nctting,*millboard, and silk eloth discs; the silk netting andsilk cloth discsarcsewnto the bag; themiliboard disc Iras a silk cloth disc attachedto it, both beingrippedoff beforeloading; ared binding loop, marked“Tear off,” being attaclnedfor’ thepurpone. Tine primedendof thecmnm’tm’idge shouldbe placednext to tire vent inn loading.

No more cartridgesof this descriptionwill be made.Packed1 in acartridgecylinder.

CARTRIDGE, 13.L,, 9-2-incit, 25-r~o,Coinoi’i’n, Sizn 44.

This is similar to the 50-lb cartridge, but it has only 5 braidhoops,nnrd not tine 1’S’inch extrabeckct.

No morewill be made.I’acked 2 in a cartridgecylinder.

OAR’r’RIDGE, B.L., 0’2-rNdn, 51-LB. 8-az. COirDITE, Sizns 44 AND 3~.

Mark I As shown in (-Ire plate, this cartridgegenerallydiffersfn’onx tine previouspatternsof corditecartridgesin beingmadeof twodifferent sizesof cordite, tire smaller size being wourrd spirally inalternatedirections r’ound a central core of cordite, arnd tied withsewing silk wound in a similar manner. It inns 10 hoops of s-ilkbraid 065-mom wide. -

Mark II Tire beekotis omitted and the number of hoopsof065-inch br-aid reduced to four. Tire cartr-idge has- a removablelifting bandof 1-incir s-ilk br-aid passedthroughloops on the side ofthebagaind tie:l on top. Tire cordite is boundronnndwith 035-inchs-ilk braid.

Packed1 in a cartridgecylinder.

CAETInIDGE, 13,L., 0’2-INcnl, 25-ao.12.oz. CouDrI-R, SIZES 44 AND 3~.

Mark I cartridgeis madein a similarwayto tire ~ cirargeof 51-lb.8-oz. It Iras 5 braid hoops.

Mnrk Ii will be made up similarly to the Mark 11 ~ charge,exceptthat it will mayono braid hoops-.

Packed2 irs a cartridgecylinder.

* Tlre silk nettingis snow omittedin rnnnnkimngupcorditecartridges.

70

CARTRIDGE,B.L, 92-INCH, 60-LB. CORDITE,M.D., SIzE 37.

Mark I empty cartr-idgeis made of No. 2 class silk cloth, andprovidedwitin eight iroops of 0-65 inch silk braid for securingpur-poses. Three beckets are provided for lifting purposes, two ofspecialbraid winch arc attaciredto tire front of tire cinrtridge, andround tire circumference,tine bn’aids being1 inch and1~4mom broadrespectively;the tinird bocket is of silk cord, securedin tine centreof thecartridge.

The charge is- built up of M.D. cordite, size 37, cylindrical insinape,with annarmnularrecessat oneendto receivea primer of 8.oz.

or new blank F.G. powder, contained between a disc ofsirahloon and one of No. 1 classsilk cloth, stitched across tinecentreso as- to form four compartments-.

A millboard disc, covered with silk clotir, is placed over the rearor primed endof the cartridge,arid is to be torn off beforeloadingin thegun.

Packed1 in a cartridgecylinder, with awood packingdise.

CAIITIlIDGE, DL,, 0’2~INclt,30-tin, Couovii~,MD,, SIzE:37.

Mark I. Pins cartridgeof 30~lb.cordite, M.D., size 37, is similarto tine GO-lb. (-~clrarge), but being shorteris Iroopedwith four braids- -

oiriy, aind is without tire 1-~inch specialbraid lifting becketneartineprinredend.

Packed2 in a cartridgecylinder, as for the60-lb. cartridge.

- CARTRIDGE, DL., 9’2-INdn, 54-tn. PRIsnir,BROWN.

Mar-k I. Tins cartridge is special for tire X and X~guns,mountedon Mark V barbettemountings,wiren firing papershot,

Tire emptycartridge is made of No. 3 class- s-ilk clotlr, with ten065 inch silk braid lroops,rind is provided with two becketsat eachendfor lifting purposes-. The chargeis built up in 16 tiers- (15 tiersof 37 prisms eacin, and 1 tier of such convenientnumber as willensure(Ire eoi-rectweigirt), sevenblackpriming prismsbeinginsertedin eaelrendtier underthesilk netting. The cartridgeInns acircularmole in each end, covered nitir silk netting, ovor winieln a disc ofs-balloon is shneliacedon. Tine s-halloon disc is- to be torn off before]oadimngin thegun.

Packed1 in a cartridgecylinder, with awooddisc,

- CARTRIDGE, B.L., DRILL, 9’2.INCII,

Dummy ear-tridgesareissuedfor drill purposes.For Marks- IX to X~gains,51.lb. 8’oz,, Mark I.Tins drill cartridge representsthe sorvico cartridge, ~ charge;

it is- of wood, weightedwith leadinn the centre; andis coveredwithraw hide. A lifting becketof Preller’s lace leatlrer is- fitted at thesmall end, anda loop of the samematerial is fitted at the largeend.

71 -

SECIJI1ING CARTRIDGE Cvr~INDE1rs;STACKING, &C.

See “ Tr’ie,qulafions for Care and Pl’eserualiou of IVan’ Jlfa(ériel,Magazines,~c.

CARTRIDGES, AIMING-RIFLE, 1-INCH, ELECTRIC,

The Man-k II case is- of solid drawn brass,maying in its baseanelectric primer madeof three tubes, which fit into oneanrotirer’, tirecentralandintermediateones being insulated fi-orn oneanothnerbymoansof goldbeaterskin ronirnd the body of the former, anda viii-eanized fibre wnslner under- its- inead. A platinum-silver bridge,roundwhich is atuft of guneotton,connectstire cirds of tire centralandintermediatetubes, the spacebeyond tine bridge in the inter-mediate and outer tubes being filled with fine grain powder. Aconicalbrass-plug closesf-Ire mouth of the inner tube to preventtineescapeof gas. The headof the inner tube is raisedin tire centretoform a contactpoint, andiound it is a ring of insulatingmaterial.The easeis clrargodwitlr 400 grains R.F.G.2powder,over which areplacedwads, and a pointed bullet of Inardouedlead,securedto tinecaseas- for thepercussioncartridge.

Mark IV, M, Mark IV, KN, differ fronn Mark 11 inn hravinrgan electric primer consisting of a brass outer tube, two ebonitein~ulatingplugs,and a brass- contact pin. An irridio-platinum wirebridge is soldered,oneendto the poilrt of tine contactpin, tire otherendto tine circumferenceof fire tube.

In orderto facilitate identification of tire patternof piimer usedin (he manufactureof Man’k IV cartridges,tire letters “M” or“KN” are, in manufacture,stampedon tine cartridge and printedon the wrapper after the numeral, to irndicate (Irat tine pn’imersaremade,respectively, to tine Morris-, or Kinrg’s- Norton Company’s-pattern.

Mark Vat differs from Mark IV in having a strongercasewithsirortor seating for primer, and in time primer mole being screwedandfitted with a screwedprimer.

The bullet is partly coveredwitin two turns- of fine white paper(certaini is-sacs havebeen made of Mark IV cartridgeswith thismodification).

Packed96 in a “Box, ammunition,S.A., (IS,,” in bundlesof 1.2

KEy, INSERTING AND ItElnlOVrI(O, PnIIMEII, CARTRIDGE, AIMINti.RIFLE,1-INCIL ELECTRIC, MARK I.

Tire key is of steel, and is for use in inserting and removingtheprimer’ of theMark VM clectr’ic cartridge.

CARTRIDGE, AiMING-RIFLE, 1~INdUELECTRIC, DLA~IIc,MARK I.

The cartridgeconsists-of the servicecharge,tind Mark IV Moi’rispatterncaseand primer, tire chargebeing coveredby two asbestosdisc,winch arecoatedwith Pettmancementon the top andedges.- The mouth of the caseis turnedin-n.

72

PROJECTILES.

(PlatesXLV to XLVIII.)

I Burstingclnarge. Totalweight;_________ _________ filled an-mdNature. Mmnrlrs. fuzed in tIre

_______ I Weight. Nature. easeof shell.

Shells,B.L., 92-inch— lb. oz. lbs.

Conmnmnon—

~ iron .. .. { ~ } 18 0 P.andF.G.t~ Forgedsteel .. .. III, 111* 33 0 ,,

I IV 1V~, 1~ Cir,t steel ~ ~ V~ j’ “~ U 380Lyddite, ]ncavy .. I, II, III 40 0 Lyddite

Arnnnoirr-~iiereirmg.. .. 1, II, III 18 0 P. amid FatArrnour.piercng,witin n-imp IV 18 0 ,,

Sinripuel,caststeel .. VII 2 3 R.F.G. JShot,ilL., 9 ‘2.imnch—

Send (practice) .. .. I 380l’ntper inn 4 parts, 3 front

mmnmd 1 rear .. .. V 428

r1~0

avoid preniatirro explosion tlnr’ougin friction winen (he powder

sets back on tine smock of discirarge,burst;inmg chargesof cast-ironcomnnomn shuill are conrtainod inn sen’geor dowlasbags,of forged steel,in serge, of east steel, in silk cloth or dowlas bags-;and of armour-pien’cinng shell, in dowias bags,or of lasting cloth in futui-e mann-factur’e.

Projectiles not fitted withn (he gas- chneck driving band, nowgenes-allylrave the front slope of the driving band serrated orronrgirenod to pm’cvent tine projectile slipping backwhen loadnngthe~UI5 at elevs-Aionn,

IIRON.

SIt ILL, B,L., COMnION, 9’2-INCII < FORGEDSTEEL.

L CAST STEEL.

Marks I arrd II smell are of cast iron, and shorter timan thosehereafterdescribed;Man-k I hastire narrow arid Mark II tine broaddriving band,mmd bothn havetine s-until baseplug coveredby the leaddisc. An asterisk after the numeral of tine s-ireIi imndicatcsthat theymayo becir fitted with the “ driving band with gas-clneck,” as shownin PlateXLV, rind a secondasteriskindicatesthnat (heyhave beenrebant]edwith gascireck, asshowir in PlateXLVI. Whentine groovefor dm’iving band is undercut, tine iron shell will be known asMark VII.

No more ironn smell will be ran-ide,andwiren theexisting stock isusedup they will becomeobsolete.

t In tine proportionof 4 lb. P.to 10 oz. F.G. powder.j Nomorn-s to be nmrnrdc, mind as soonas the ozinting stock is used up, tiney nnill

bccomeobsolete. - -

7~

Mark III is of for-god steelwith a solid base; length,33’5 itrclnes.Mark 111* differs from Man-k III in having tire dn-.iving band

with gas-cireck,as in PlateXLV, arid when rebandedwith tine gasclneclc,as shownin I’Iate XLVI, n-n secondasteriskwill beaddedto tinenumeral.

Mark IV’ is of caststeel similar to Mark V, but with a largebaseplug and no adaptor,hencenot suitablefor a basefuze; thejunction of theplug is closedby a lead ring thesameasis usedfortheadapter’. -

Mam’k IV* onnly differs from (he Mark IV’ in having tire drivingbandwith gaschneek.

Mark V is madeof caststeel witln bands; its baseis ronnadedwith a radiusof 0’2 incin. Tine headis truncatedand struckwitha radius of two diameters; it has a flanged bush tapped to tireG.S. gauge,and provided with tine recess for naval wad. Theinterior is lacquered. There is a hole in the base 1~8inch indiameter,fitted with a baseplug with lead wasinerunder thehead.Some s-hells have, for convenienceof manufacture,the hole in thebase2’O inch diameterwhicir is closedby a gunmetaladapterfittedto take tine plug. The useof this adapter is- optional with tinemanufacturer. There is an undercutrecessroundtine flange of theadapterand in the metal of tine shell, into which a lead ring ishammeredto close the joint, tine adapternot being removed forfilling the shell. On (ho exterior of tine shell, and in line with thecentreof gravity, is a lifting hole tapped for the receptionof tireeye-boltusedfor lifting projectiles. The smell is fitted with abroadVavasseurdriving bandiraving threecannelures.

It is 33’58 inches- long, 9’32 inchesdianneter overdriving band,andweighs-,filled andfuzed, 380lb.

Mark V* is theMask V fitted with driving bandwith gascheek,as in PlatoXLV; or, wiren rebanded,as in PlateXLVI, is indicatedby a secondstar.

No more steel common shell will be made,and as soonastheexistingstock is usedup they will becomeobsolete.

ShELL, l3.L., Co~tnoN,LYDDITE, 92-INca, HEAVY.

Man-k I shell is of forged ~tocl, 3’65 cahibreslong; tine base issolid, arid roundedto a radiusof 0’2 inch; theheadis struckwitin aradiusof two diameters,tire point beimng truncatedandfitted witln agunmetal bush, whniein is- tapped to G.S. faze mole gauge. Tineinterior of tine smell is- va-mis-med.

An undercutgrooveis (mmcdins tire body neartine base,into wlnichis pressedtine copperdriving bandwith gascheekto impart rotationto (he shell. Tire front slopeof tire gascheckportion of tine band,isserratedor roughenedto grip inn tire bore anti to prevent tire shellslipping back unto tire chiannbon~ wiren loading tire gun at elevation;the band inns two canrreiurcs.

The smell is filled with lyddift-, witir (inn (mo latest method offilling) S to 10 exploders.

Tine Mark 11 exploder is madeof “I3atiste” (wator.proofcottonfabric), andcontains7 dramsof picricpowder. TineMark I exploderdiffers from tire Mark Il in beinrgmadeof oiled silk.

Shells filled between28.ll.0~amnd 30.5.05 (both datesinclusive)arcprovided with ~Mark 1 expioders,but no moreof theseexploderswill be usediii future filling.

74

Mark II shell differs from Mark I in (he forum ef lower pant ofdriving band,seePlateXLVI.

I\lark III differs from Mark I in tine groove for driving bandhavingwavedribs.

Snsi~r~,B.L., AirMouIi-PIETrCINO, 92-INca.

Mark I is of for-god or cast-steel,tine headis bronglrt to a point,arid tine baseis preparedto take tire “fuze, percuss-non,base,large,No. ii.” A steelbus-It may be usedin closrnngtine baseat tine optionof tine maker; if so, it mustbe screwedup ins- tightly aspossibleand(Inc joint riveted up.

Tine shell is fitted witin tIme gascirock drnvsngband,thegrooveforit being undercut to pm-event tire bands-tripping off.

Mark II differs- from Mark I shell in (ho form of lower part ofdriving band.

Mark III. In this Mark tire groovefor driving band haswavedribs ; otherwiseit is tine sameasMark I.

SnIELL, B.L., ARMoUR-PIERcING, WI’nrt CAP, 9’2-INCII. -

Tins- shell differ’s from the previous- patterns, in being fitted witha cap over tine point, andin beiugstrongerin design.

SnELt~,EL., SarrAs-Not, 9~2-INcrt.

Mark VII is of eaststeel,355 calibreslong; radius of headis2 diameters-; tine bursting clmargo is in the base. The head isscouredin tine usual way, and inas a socketof G.S. faze-holegauge.‘rime form of driving band is asfor tine Mark II lyddite shell. Thesmell is- lined with brown paper,andit-containsabout638 2-os,sandshot. - -

Sntor, SOLID, 13.L., 9’2-rNdn, MAIrt I. -

TIns smut is castsolid and fitted with gas check driving band.The ribs in thegroove!ordriviag bandarewaved. - -

Suor, PAPER, EMPTY, EL., 92.nNdil, FI10NT AND REAm.

Mark V is madeup in four parts-,eachconsistingof a cylinderof wood pulp, choked at top and bottom to elmwood discs-; thebottom disc being weakenedby holespartially bored throngin it sothat iii may breakup on firing.

Tine total weight ,of tine shot is 428 lb., each portion weighing107 lb., being filled witin “slrot waste, 1 to 5,” and sawdust;the filling being done through a hole in thetop disc,which is thenclosedby a woodplug.

The cylinders forming asinoti aremarked“Front” arid “Rear,”and areusedins (heirnamesimply. Tine part marked“Rear” hnsits- but(om disc larger in diameter than the bore, and is in con-sequencestoppedon ramming home,when its rear endreacires(Irecommencementof tine bore, in order (hat tire s-hot nary not berammedmemo too far.

Marks I to IV werein two partsonly, andwele made—MarkIof browxrpaper, Mark II of papierzxnâe]mni, and Mar-ks III andIV ofwoodpulp.

76

Shot of tIne earlier Marks will be used up, but tine number ofportions per roundwill be four, as- in tIre caseof Mark IT, and eachportion will be adjusted(o tine weight of 107lbs. by employing alargerquantity of sawdustto wasteshot in filling.

‘rhno shot areto be fired witln powdercharges-only.As- tiney break up on firing, the small shot travel but a slnort

distance (about 200 yards), ~v1niietine effect, for iran-posesof testinrgrecoil, &e., is- practically tine same as (lint obtained with theServiceI,roJeetile. Tirey will thereforebe issuedin time o-f peace, when-c tireuseof tIre Serviceprojectilewould be dangerousor inconvenient.

There will, mo doubt-,be emplacementsfrom whniclr, owinsg to tineclosevicinity of hronises,it may be undesirableto use these shot innthenornnallitre of fire. In (lies-c cases-it will often be found possible,owing to thevery short ranngeof tire papers-hnot, to find sufficientspaceto tire right or left of tine regular rangeto carn-yout such testpracticeasmay bin required.

Seealso footnotc.~

SnaiL, Diriii, IL1i~.,9’’2—INdu. -

This is of cast-irorn, fitted witlr two copper bands to preventinjury to tire rifling in loading andunloading. Tine nose is bus-medwith gunmetal, and tire baseis fitted witin a large Inohlowed andflangednut of gunrmnietal;a gunmetalring is fitted round the basebybeingscrewedon, a groove is formedbetweenit andtire metal ofthe smell to take a rope gmummet,winch prevents(lie smell beingrammedtoo far home. It is weightedup with saird to air averageiveigint of 380 lb. The sirehl earn be extractedfrom (ire gun byhooking tire shell extractoron tire crossbar of baseplug.

No mon-cdrill smell for the 9~2-ine1nwill be nnnde.Winore 92-inch drill smells are not alreadypr-evicTed, a service

cast-ironcommonnose-fazedshell pergain will be setapart for drillpurposes,and marked “ tIm-ill “ in 1-inelr wlmito letters round thenose,to ensurethesame shell beingalwaysused.

Drill smell arerammedirome first round only, andlocal arrange-ments-madefor extractionat theconclusionof drill (for this purposea light sparnnray be requin-ed,i.e., whes’eonecanbe used).

- EXTRACTORS, DRILL SHELL, Nos. 2 AND 8.

Theseareof steel,with wood staves(tine outer endsbeinggroovedto preventthe handsslipping), thesteel portion of eachis formedtohrookon tire crossbar of drill s-mel! baseplug.

No. 2 : Tins is of 8 feet total length,for all tine marks of gum,exceptMark IX on Mark Ill barbetteeas-riage.

No. 3: This is of 13 feet4 inchestotal length, for- Mark IX gunon Mark III barbettecarriage.

* Mark I ~1notshould irot be usedunlesstine rangeis clear for 1,000 yards~but tire other Marksairy be us-ed with arangeclearup to 400 yards.

7P’hen usiing (herer/iot tine~qnnnnmeoW~enunnop careftnlly cn,nnl .r(owly.

76

FIXING PLUGS ANI) F1JZES, SECURING SHELLS;DISTINGUISHING MARKS, &c.

See Iiegnn-ltnlioas for. 3fn-n-~az-r~nesanrd the P-rcscn-vationn of Artillery

FU7JES.

(PlatesXLIX to LIII.)

r base .1 No. ii. Marks 1*, 11*, III, IV, and V.1 largef No. 15. Mnnrks I and II.Percmnsn.non~ . i wit-In plug,No. 3, Marks III and IV.

L dmrcctaction~ inmnj)actNo. 13, Man-ks I to 1V.

semrsitivomiddle,No. 24, Mark I.Tune ) . Jmiddle, No. 5-1, Marks 1*, II, andIll.

anal ~ )~No. 02, Marks I anrd II.

( base, large, No, 11.I pe~-cussiomn~direct action, ivitir cap,No. 1.

~ .~, J (direct actionimpact.jjnrnn ‘~ . . I No. 54.

L tunic andpercussion,nnnddie~ No. 62.

Tine following is a descriptionof tire fazes

Fuse, PELCCSSION, BASE, LARGE, No. 11.

(PlateXLIX.)

Tinis fuseis for usein armour-piercingshell.Someof theearlierMarksof this- fuze(Mark II is retainedfor use

witin comnnomrpointedshell R.M.L., 9-inch, Inigir.nngle guns)Iravebeenconvertedto Mark IV designby beingfittedwith theperforatedsteelprotectingplate,which in this- case is- screwedinto the baseof thefinze, nmnd is preventedfrom turuinng by threecentre punch dabs.Whenaltereda star(*) is addedto tire numeral, thus,1*, 11*.

Mark III (of ivinicin only a certain number were made) differsfrom Mark IV fuseprincipally in tire cenfrifugal bolt which hints lessprotrusion.

Mark IV consistsof tire followimng parts, viz. :—Body, needle,pellet, centrifugal i~o1t,pressureplate with spindle and nut, per-forated protectingplate, screwed cap witin detonatorand plug,plnosplmor-bromnzespring,brassspring,and four brassscrews-.

Tine body of (Ire faze is of margannesobronze,screwedoutside(left Irand), to fit tine smell. Tine pressureplateis of copper,and. isspunimrto tine baseof tire faze; it carriesa spindlewhich retains- tirecentrifugal bolt in tire needle pellet by engagingin a slot in thelatter until the pressureplate is blown in. Tlre baseof tine body is-recessedto admniit of tine pressureplate beixrg forced in by the gaspressurewhen tire gunis fired. Tire protectingplate is- of steel andperforated with eiglnt holes- to allow the pressureplate to becrusinodin; it is spun into thebaseof the fuze,coveringthe pressureplate.

77

Tine needle pellet is of gunmetal,and lnas a screwed i-cues-sontop for the nnoedleping, and a hroie bored inn it, at right anglestotine axis, to take tire centrifugal bolt, tIne head of wlniclr enngagesinto a recessin tire sideof tire body, andis kept in that position bya spiral brassspring in tine oppositeside,and by tire spindle of tirepressureplate. Tire needle pullet is preventedfrornn working for-ward in thigint by aspiral spring of pinospirorbronrze.

The detonator is spurn into a recessinn tine screwed cap, arid.communicatesby six fire holeswith tine magazismc containinga com-pressedpellet of R.F’.G.m powder, betweentine cap mind tine plug.

Aclion.’—’—On (liscirarge, tine pressureof tine gas crashesinn thanpressureplate, causing tire spindle to releasetire centrifugal bolt.Tire rotation of (he shell causesthecentrifugalbolt to be spurnout,compressingthe spring in rear, amid, leaving theneedlepellet free tomoveforward on impact; whentire needlestrikestire detonator,theflash ignites the powderpellet ins tire magazine,mid cx1nlodestineshell.

Theheadis paintedred.Weight .. .. .. 2 lb. 8 os.

Mask V differs fronn tire previous- pattern,externally, in beingof greaterlength over all, having alonger threadedportion err tinebody,and in thesteelprotectingplatebeingscrewedin andfixed byfour punchdabs;thenumberof holesin tire plate inns beernreducedto four and their position altered. Internally, it differs- in havinga different form of pressureplate,tine aperturein the body beingalteredto suit; thedetonatoris insertedfrom tine outsideof tIre topcap and is held in position by abrass disc, perforatedwith six fireholes-which is socuredby turning over (ho burr OiL thecap.

.Note.—Shellsfittedwith tinis fuzemust neverbe placedpoint to base.

Fuse,PERCUSStON, BASE, LARGE, No. 15.

Tins- fuze for usewith tire armour-piercingslreil with cap, differsfrom the“faze, percussion, base, large, No. 11,” in having abody ofaluminium brouze.

Mark II differs fr-em Mark I in exactly tire san-ne detailsasFaze,pel.cussion,base, large, No. 11, Mark V, differs from Mark IV, asdescribed above.

Fuze,PERcussioN,Diacci’ Ac-noN, WITh PLUG, No. 3.

(PlateL.)

Tine Mark III -fuseconsistsof tine following prinncipai innetal parts,viz. :—liody, safetyping, screwcollar, needle disc and steel needle,screwplug fon~ireediedisc, aindbottonn-n scranvplug.

rn50 fuse is madeof an alloy resemlnling gunmetal,with tire ox-ceptionnof tine steelneedle,copperdisc, mind a few nninor portions.

The body is tinroadedtirroughout on the exterior to tire generalservice taperand pitcin, and can be screwedinto tire smell to admittine naval wad being placed over it. The low~part is hollowedoat to receive a blowing charge of 75 graimns pistol or R.F.G.2

powder. Tine upperportion of tire body is bored out to receivethinsafetyping, screwplug for needledisc, andscrewcollar; thieve is a

78

rocess below theseto receivethe detonatingcomposition,consistingof 3~grains of cap composition, varnislncd, and covered with abrassdisc,having on tire top of tine brass-disc a copperwasher keptin position by beings-pun oven-; (iis washerinas- a central mob, whichwas formerly 2 inch diameter,but from tire 192nd tlnousand it is~3incin diameter. At tine bottom of this recess-(hereareinure conicalfire holes,to allow tire fins-in of tine detonatinrgconnpositionto pass-tothe powder; tires-cconical mobsarefilled with meaiedpowderpaste,andcoveredonn tine nmnndei-sideby a discof fine winitepaper,andon tireupper side by a tin foil disc (subsequentto 27th June, 1894), topr-event tine detonating composition working thronigh (lie powder.Tire top is closedby tine safetyplug. -

screw plug for ‘needle disc is lapped so as to sci-ew into (Irebody and s-ecesscd. It is- slightly coned at tire bottom, and, hasahole through tire cemrti-e. Two holes mire drilled in tine top so as toscrewtine plug unto tine fuse. Tire needledisc is of copper, witir thesteel needlehr tire centre; it restson tire screwplug for needledisc.

Tine serenecollar screwsinto tine body over tire screw~)lnrg,havingtwo slotscut in its upperedgesfor (matpurpose.

The needle is of steel,and of the slrapeshowni in tine section,having four points. It is sprunginto tire needledisc,andtheedgeis solderedto the lattes-.

Tine bottonn plug inns a central Inohe,closedon (ire upperside by adisc of paper,mind oneof sinahinon,and. two keyirolesfor screwing itin. It is securedand rendereddamp-proofby cementandsolder.

mire threadof needlescm-ow plug, edgeof needle disc, raid screwcollar mire now threadedwith Pettman’scement,and. tine screwcollarandneedledisc surfacesarefinally paiintedwith the s-ann-ne material.ml’lie faze is- pi-epanedby simply removing tire safety plug, withtire flat enndof tine key fuse, universal; an arrow on’ tire plug shows(ito way it is to be turned.

Action.—Tlnefuzo is at rest inn nil its- parts till direct innpmrcttakes place,or- a graze at such air amrglethat (ho noseof tine shellenter’s- tine object-. Whom either of tlrcseeventsoccurs,the needleiscrushed down on to tIre detonatingconnposi(ion,which fires, andiginites tire meal powder in the conical holes and the fine grain

1nowder. Theflash therefromblowsdowninto the shell andfit-es tirechrarge.

‘nine Inoad of time needle being some distance below the headoftire fuse, it cannotbe toucined or- forced down orn the detonatingcompositionwinen any ordinary rammeris usedfor londinno..

Mark IV diffei-s fr-on-n Mark III fuse in hsnving a removabledetonator,a single-pointedneedle,and a slighrtly smallermagazinecontaining63 grains-of powder.

Weight,5 ozs. 7 drams.

Fuss, Penmcussios,Dirm~c-n’Ac’rnoN, InnPACT, No. 13.

Mark I.—Thisfuseis for usewith lyddite shell for direct fire.It fits in thenoseof the smell; tire body is of gun-metal,2-2 incheslong, screwedoutsideto G,S.gauge,theupperpart beingtarriedandfurnisiredwith asmall projectionon each side to receivea cap; thelatterwas formerly of steel,but now it is madeof manganesebronze,witin safetypin; tire r-im of fine capIrasa T-sirapedcut on eachsideto lock on to tire projectionson tine body, andthereis a squarekey-

79

holeon (ho top for fixing tine fusein tire sinaI!. Tire faze is rondowaterproof as much as possible,by having a discof foolscappapercementedover the henid, whiclr is, with all openings-made in tinebody, paintedoverwith Pettmarncement.

On (befuse passingtinrough the OrdnanceFactories,it has beenaltered to agreemis- nearly mrs possible with Mark III, and thendesignatedMark 1* andso stamped.

Mark Ii wins- designedfor R.M.L. Inigh-anglefire lyddite shell.Mark III: (Iris mark differs- from the previousMar-ks in Iraving

additionalarrangementsin tine mend, with a view to tire exclusionofdamp.

Marks 1*, II andIII fazesare broughtnnp to Mark IV pattern,asnearlyaspossible,when passingthrough the OrdnanceFactoriesfor repair.,and whenso alteredtheyarestampedthus-~_~I**,11*, 111*.

Mark 1Y. is for- future manufactrnre.Weight of faze, [0 Os. ; ~veighntof cap,3 oz.

SENsI’I’[ve, Mrno~e,No. 24, MARK I.

(Plate Li.)Thefazeconsistsof tire following pas-tsBody, with stem,threadedon tire lower pant of tine outside to

G.S. gauge,and containinga blowing cinargeof M.G.1

powder, andaxial magazineThF’.G.’ powder; compositionring, with fuse corn-position maying leather and paperwasinors under it; steel needle;higirting peliet, with detonatingcomposition in cap; two i-etainingpellets-,with spiralsprings; domeandnut; two coppersafety pins,mind bottomplug.

All themetalparts-arc of gunmetal.A leatlrerwas-heris fitted undertire s-boulder-of tire faze closing

the joint between time fuse and s-hell.-Thecompositionring is graduatedon its peripheryfrom 0 to 30,

andreadsto qnnarterunits-. An ‘~‘ is- stampedon the ring to showthe safetypoint, andwhen this coincideswitin the 4~on time body,thefazeis sot at safety. Tine cap whicin screws on to (ho top of thepillar is madelroxagonal,to fit tire “key, fuse,universal.”

Thefazeis set, after beinng fixed in tine shell,by loosening thescrewcap on the (op of the stem, by means of the “key, fuzo,universal,” andturning thedomeandrimng till the requiredgradua-tion on tire collar coincides witin the arrow headon-n the body,andthen tightening the screwcap. Tire safety puns are withdrawn attire momentof loading.

Action—Ondischarge,tine centrifugal actioncausestine ronsain-ing pelletsto fly out, releasingtire iiglrting poliot, wiricin flies out bycenmirifugal force, against tine needle, firing the detonatorwhichignites thepowderin thepellet andaxial magazine,(Iris- latter iiglrt-ing tire quickmatchin (ire compositionring.

Time of burningat rest, 14~6to 15’S seconds.Weight, 1 lb. 4 oz.No’r~.—Whcnthestockshall mayo been used up, Middle No. 54

or No. 62 fazewill be used,

Tisms AND Peacussrox,MIDDLE, No. 54.

(Plate LII.)Tine body of Mark III is hollow, witlr astem on tine upper side.

Round thebaseof tine stem air annular grooveis cut, from which aIrohe is boredto the side of tine body for the gas to cs-cape. The

80

sidesof thebodyarepiercedwitir threefire moles’; tire top of tine l)odyis screwed to receivean Irexagonalcap. Thecap fits- the lnexnngonalhole inn (lie cents-cof tire “ key, fuse, univcr-srnl.” Between tire capmind tine dome fits a brasswasherwith fcatirers- fitting into slots ontine stemof tire body; it is to preveirt tiny dome fi-ora tum-ning withtine mat and altering tire setting of the fusewhenthe capis screwedti ~

Tire coinpositiomn ri~rginns ann annnulnrr gn-oove round it for tineconnpositiomn,a projectionon tire nipperside contaimnstire hammerwitbnsteelneedle,suspeirdodby a 0022-inchwin-c, and a detomnator,underit for liolrtinrg tine composition~in tine n•i-nrg. Tine mummer is alsosecured1~ya safetypin passingunderit, tire mob in the ring left byits witlndrawal beimng closedby a brass pellet witin a spiral spm-rngaboveit.

The composition ring is barrel-shapedoutside to facilitate tinesetting of tire fuse. Tire ring is kept in position by three projec-(ions- on tine side,which fit closely roundtine stem of tire body. Twocs-capemolesareat tho top of tire ring at the commencementof (hocomposition, arid thnrce radial onesareboredthrougin the inner sideat equaldistancesroundit.

TIre top and first madial mobs are coveredwitir papei~,the twoother radial holeswith asbestos. Tine ring is graduatedfr-em 0 to30, amrd readsquarter units ; the time of burning of the fuse atr-es-t is about 16 seconds;-tine divisions- have four s-rib-divisions(mere is an arrow-headbetweenthe last graduationand tine com-mencement,to showtheposition of safety.

To set(he time arrangementof the fuse, thenut is loosenedwithtine “key, fuse, universal,” and tire ring moved round till I he rc-qnnircd graduation is- oppositetine arrow on tire body (a black tri-angularsetting mark is now, in manufactune,substituted for tinearrow on tine body of the fuse); thenut is then tigintened,groat carebeingtakento seethat it is screweddownas tightly as possible.

The action of the time arrangementis that, on discharge,thehammersetsback, slrcmni-ing tine suspendingwire, arrd fires the deto-nator,which lights tire end of tire ring of composition; this burnsuntil tine channelcommunicatingwith tire lower part of the fuseis-reached,whentire flash passesdown it and fires tine detonatorandmagazinein tire percussionarrangement.

Man-k II differs -from Mark III in the hatter having a percussionarrangementsiminilar to that in tine “lime and percussion,fuse,~o.56,Mark IV “; tine tin-no ring having no escapeholes,excepttime twomit thecommcncennentof tire fuseeonipo~ition; tine hoopsof tine eyesof thesafetypins arestrongerin J\iark III, and (he time pin is- nowfitted witin a scarletcordloop.

Man-k I inns been alter-ed to agreewith Mar-k IT, amnd is mowMark 1~. In-i future conversion,(he fuses will be fitted with solidwire time safetypins.

Weiglnt .. .. .. 1 lb. 4 oz.No more fuses- of tins dcscn-nptnonwill be provided, and wincin

tire stockis usednil,, fuse, trmeandpcrdussionr,~o. (32 will be used.

Prize, Time and Percrmssion, No. 62 (Mark I).

(PlateLIII.)

Tire fuze principally consistsof tire following pants, wlnicir an-cmadeof gunmetal, except winero otherwisestated body, detonator

81

plug with detonator, percuss-ionpellet with needle plug and steelneedle,brasssafety pellet, br-ass ball, baseplug, time compositionrings (upperand lower),brasssprings-,dome,brasswasirer,cap,twosafetypuns, mind leatherwas-hem-.

TIne l~odrjis- screwednit (ire lower endto G.S. fuzc-holegauge,andbored from thebottom to receivethe percussionpellet andbaseplug.Two holes are bored beyond the, recess for tine percussion pellet,one for’ tine detonatorplug, (lie other for the safety pellet. Tinemob boredfor thedetunnatorplug is continuedinorizontaily to form as-mall magasinnewhich is filled with fine grain powder, tire mole (Ironloads- upwards,to join tire time rings andcontains perforated peilotpowder. Tire, stem in the body is screwed to (mike tine cap, twoteatinerwn-ys being eat in top end of stem to receivecorrespondingfeat-lien’s- on tine br-ass was}nerover dome. A s-mall tablet of finewirito paper is securedwitin shellac to the body of t-ire fuse overtheperforatedpowder pellet, and over this tablet ar-c two was-Iron’s,one of fine winite paperandtine otlner of calf skin, wlnieh aresccnredwith sIrehlac, a hole being cut tinrough the washers- and tabletimmediately over the powder pellet; similar tablet, pellet andwashersexist on top of thelower time ring.

Thedetonatorplug is screwed on tine outsideto fit the hole pre-pared for it, andcontainsa detonatorwhich consistsof a coppercap with fire holes,filled with 3~grains of detonatingcompositionwith aP005-inchbrassdisc under tire compositionarid a tin foil discoverit, to preventtire compositionworking througin the inoics.

The percussionpellet hasa slot in tine side for the safetypelletandbrassball to fall into whenset in action. For additional safetya hole is- madetransverselythroughthe pen--cussionpellet, andfittedwith a brassretaining or centrifugal boit, winch engagesin-n (hebody andis held in position by abrass- spiral spi-ing; tine outer endbeingtheheavierpan’t of tire bolt, it disengages-itself from the bodyin fligint. The percussionpellet contains5~grains of powderpelletperforated,iraving under tine latter a muslin- disc mind brasswasinermind over it onegrain of fine groinpowder,and tlren the needleplug,winiebn is screwedin, thelatter is perforatedwith six fire moles mind -

containsthe steelneedle. A small set screw in tire body fits into as-lot in the percussionpellet to prevent time latter turning in-n fligint.Two spiral spn.ings prevent tine percuss-ionpellet creepingforwarddaring flight, arid causingprematureexplosion; theses-prisngs-haveaseatingin a s-mallow recess-in top of the pellet, and the oppositeendin acorrespondingrecessin (ho faze body.

Tine safetypellet Inasaslot cut in tine side to cleartire brass-bail,andis suspendedin the body by a thin copper wire which pass-osthnrougIn it. A holeis alsoboredin the body andupperpart of pelletfor tine percussionsafety pin, tine mole in tire body left by theremovalof tire safetypimn, is closedby a brasspellet, iravinig above ita spin-a)sprilrg in compression.

Tine baseplug contains pellet powder perforated,over tine latteraretwo discs,one paper the other muslin, and abrasswasher,andundertine pellet a sinalloon disc and a br-ass washer. Tire baseofthefuse is closedby tire plug winicin is madesecureby beingstabbedin threeplaces.

The composition rings have each a channel,‘winch is lined ‘withasbestospapen-, for tine fuze composition,and a hole is providedwhich allows- tine gas direct escapeoutside; this escapemob islightly closedby menusof ~ brnnssdisc covoi-ed without by Pcttman

(9389) r

82

cemnnent;tlrero mine (inn-ceprojectionson tire inside of tire ring to keepit concentric with the body stem.

Tire upperring inns a chamberwhelm contains-a hammerwithsteel needle,tine inammeris suspendedby a ~022-inch copperwire,a safetypin nibs-u pass-estirroughntine ring andunderthe lnammer,thehole inn tire r-ing left by (Ire witlrdrawal of tire pin is closed by apellet of brass-as mnentiorred abovefor tine percussion-nsafetypin (seesafety pellet). Urnder tine nnecdie is detonating composition andnnealed.powder. The compositionchannelon tine undersideandtinecirannhermine con-rncetedby a lightmn-rg mob, tine connrpositionr beingr’ouglrerred at f-he liglrtimrg point to assistignution. Tire outsideoftine ring is barr-el sinapedto facihiatesettling,and is graduatedfronro to 30, eachndivisionnbeingsubdividedinto inalvesandquarter’s,witinann ann-ow pomn-nt on bridge portion to man-k tire position-i of safety,i.e., winen tire ar-row arid botin pointersan-c in tine someverticalpiano.

Tire lower- ring Inns aconinposition clnannel similar to the upperring; tine rinrg is flat on the outsideaddgraduatedinn divisiomrs asbeforennentiorrodfor tine upperring, hut readingfrora 30 to 60.

Two settingpoinr(ers an-c provided,on-me of wInch is fixed to tirelower iinrre ring by a sen’ew, and (lie other to the body under therings. Tiro pointem-s an-o mad~of crrpro-niekci,andblackened.

A pawl is fitted to tire lower time ring of tire faze. Whreni thelower pan-t of (ho pawl is pressedinto a slot in tire body of the fuse,it preventstine iowon’ (lanem’inrg from turning winile the upper ring ishoming sot. Whensetat 30, or above,tine upperend of tine pawl fitsinto a slot in (Ire upperLime ring (in which position it is held by aspring),anrd locks- both rings toge(lner.

Tire dome,brasswasher,andhexagon-n-alcap an’e put on tire fuse intine on-den’Irene given.

Tire domeis of sheetbrass,stampedinto shape,and coven--s thetime lighting arrangement.

Time wasirerinn-is two featherswinch engagein featherwncyscut intire stem of fnrze ; its object is- to pm-eventtIre dome fm-om turnningmind ahtermrrg tine setting of tire fuse through friction wirea screwingdown tine crnp.

Tire capmust be cianrpedtightly, this is inmost important, if not(lone tine eonrpositionmayexplode insteadof burning. Care mustalso be takenwinen clampingmrot to altertine setting.

Tire fuseis stampedT on theuppercompositionring closeto (hetinne safetypin-n, and ~ oa tine body closeto the percussionsafetypinn. rIine pins areen-reinprovided with a whipcordbeeketor loop, tire

T omne beingscan-let, nnrd that of ~ tarred.The operninigsin the fin-se are coated with Pettman cementto

excludedannp.A leather washerin a groove abovetine fuz-bole (inroad makesa

tight joint.Tire fusesinould be setbefore tine safetypius- an-c witlrdrawn.To sot thetime arrangement,tine cap is loosenedwith tine “key,

fuse, universal,” and the ring moved round unntil (irø gradniationordered an-nd tine Pointer coincide; the fuze is thncn clampedbyscrewinngdown tine cap as tightly as possible,caio being taken(hatthe i-ing and dome have oven bearings, and tine setting hasnotsinifted. - -

If tire fuse is requir-edto act asa pen-eussionfaze only, the ~ pinshould bewitlrdrawnn. andtire T pinn left in position; otlrerwise,bothpins should he witlrdn-’awn, but tins should not be done till tiremomentof loading.

83

AcUon.—Ondiscinn-rrge,if tire time safetypin Inns boom withdrawn,the Irammner sets back, shearing the suspendingsvii-e, an-nd ignitingthedetonatorandtine time ring, winicir burnsuntil it comesover tine,pelletand so flashes down tinrougin tine radial magazine,percussiondetonatorpellet, andbaseplug an-rd into the sire11.

If tine pen--cuss-ionpin has beenwithdr-awn, tine safetypellet setsback,smearingtine sins-pendingwire, amid tine hi-assball l’alls down-iinto thespaceover (Inc safetypellet. Tine centrifugalbolt, owing totire rotation of tire s-hell, is- witlrdrnnnvn, tire percuss-ion pellet is freeto move forward on-i impact andignito tire detornator,which flashestim-origin (ho percussionpolio

tamid baseplug into (ho shell.

Tire timo of bum’ning at rest is about35 seconds-. -

Weight of fuse (about) 1 lb. 7 oz.

Mark It differs in time following particulars(1) rI~hodomeis tinicker.

(2) TIre s-bern of the body is thicker andslightly longer.(3) Thereis only onesettingpointer,wInch is fixed, to the lower

time ring.(4) Thelower time ring is- milled.(5) Tire graduationsareonn (ho uppertime n-ingonly.(6) TIre fuso is heavier,the averageweight being1 lb. 9~ox.

DRILL FUZES.

1”uzr, DmnrLr~,Psacussiox,BASE, LAin-ar, No. 11. -

Service fazes winicin havebeenburnt out will, as far as possible,be utilized for this- purpose,by beingcleanedandrefitted witir emptyscrewedcapandplug, bronzedand stampedDRILL.

Fuss, Dnnmr~a,PERcuss-roN,-D.A. WITII CAP, No. 1.

This drill fuse is made of gunmetal, solid, and to tine samnneexternal dimensions as the service fuse. The body an-rd cap arebronzed,andstampedDRILL.

Fuzr, Daina, PEn-n-cuss-n-oN,D.A. IMPACT.

This drill fuseis generahiysimilar in oxtermnalappearanceto tineservicefuse. It consists-of a hollow body, renrnovabiecap,and steelsplit safetypin, wiricin can be wi(hrdrawnandreplacedas required; itis- intended for usewitlr tine drill hyddite smell. Tire fazeis- bronzedandstampedDRI[AL.

Fuss, DnuLn, T. AND P. MmDDLa, No. 54.This-drill fuseresemblestheServicepattern,hunt is issuedempty,

rind provided with special safetypins which canbe witindrawn amndreplacedas- required. A steelwasirer is fitted undertire cap. Tiredomeandcap are bronzedto facilitate identification. ‘I’lno fuse isstampedDRILL.

Fuss, DRILL, T. AND P., No. 62.Tins drill fuseresembles-the Servicepattern,but is issuedempty,

and providedwith special safetypirns winch can be withdrawn andreplacedas n-equirod. Tine domeand cap are bronzed to fmneilitateidentification. Tire fnnze is stampedDRILTa,

(9389) r 2

- 84

TUBES.

(riates LIV to LVII.)Tubes f Electric, wirelessP., Marks-I to IV.

Vent ~ Pcrcnssion,Marks II to VI. -

Sealing.~ Percussion,drill, Marks I andII.Primer,vent, cordite, Mark 1.

Tine percuss-ionlook arrangementnecessitatesa specialtube forfiring tine charge,andthis- tribe performsa doubleduty in scalingthevon-nt wlnenrfired so as- to prevent tire escapeot gas-. Tire tubes,forsen--vicemire nina-doof two patternsfor firing by lnandorby electricity.

Tuns, VENT.SRALmNO, EI~ECTRIC,\V’ITtELESS, P.

(P?afe LIV.)Mark I consists-of abody, conical brass plug, copper pole, cork

ping, ebonitecup, eboniteplug, irollow ebonitecone,insulatedcopperwire, two paperdiscs,mind two platinum-silverwires.

The body is made of bm’ass,witin- a n-ecessin tire inead to~receiven-rn ebonitecup whichn (since1st February, 1899) is s-crowedinto tineheadof tine tube, and into which fits a winite-metal contactprece,secnnr-edby an-i undercutgroovein tlno ebonite,and connectedby animrs-mnlatcdcopperwire witin the interiorof the tube; a mole is boredtinrougin tire moan-Iof tine tube for the copperwire to passthrough.Tine lowen- endof the insulatedwire is mittached to thebrass con-rn-catplug, winieln is insulatedfrom tho bodr of tine tubeby thelnollowebonitecome. Tire largeendof thebrassplug is cupped-outto forma gas-check,an-nd has-a centre hnolo bored and screwed to reeen-veaneboniteplug. Into this eboniteplug is fised tine copperpoie,whichconnsistsof a copperwire, coatedwith pun-c (inn, one end fitting intotire ebonniteplug, theother beingsecuredto tine side of thetube.

The copperpole and conicalbrassplug are connectedby a doublobn-idgoof platinum-silverwire. Tine spaceroundthebridgeand polois chargedwith 2 grains of oonnposition priming, over winch ispiacc~la winite paperdisc,

Tire tube is filled with about 24 grains of pistol powder (innpresentmammufactnnrea special fine grainedpowderis used),an-nd timecad is- closedby a disc of winite paperandacork plug sheilacedin.

Aetion.—Oncontactbeing modetire current passestlrrough tirestriker, shortwire, cone, double bridge, long copper polo, mmd thebody of tire tube. Tire double bridge becomesincandescent,wind-fires tine priming mind powdem-, tine gasexpandsthecupped-outplugmind preventstheescapeof gasthroughthehead,thecurrentpassingback to tine batteryagain furor-gm tine metalof tine tribe mind gun.

Man--k TI differs from Mark I in havingasingleinsteadof a doublebn-idge,and in a few slight manufacturingdetails; tire eonicmnl plugis somewlmat larger in diameter,tire contactdisc is of pure tin inpr-cs-cut mn-manufacture,irnstennd of winite-metal mn-s previously ; tubesmaying time pure tin contact disc will be distinguished by theletter “T” stampedon-n tIne Iread; two paperdiscs areusedin closingtine tube,omne on citirer side of thecork plug. Tini~mark irasnowtheedgeof tIneebonitecup bevelled off as nrentionnedfor Mark 111tube.

Mn-u-k III has a contact disc and ebonite cup of slighrtiy largerdiameters-,arid tire ebonite cup bevelledoff flush with (Inc contactdisc, otirerwisethe tube is tine s-mime as- Mark II.

85

- Mark IV differ’s fronn tire Mmnn-’k III primrcipahly inn iravinng a per-fom-ated glazed board disc (with paper disc attn-reined)betweentirepriming composition and tire pellet powder, tine bridge ns madeofiridio-platinmrm “wire, electric,umncover’ed,14 13,” and inn latestmanu-facturethe endof tire tubeis bun-redto securetire corkplug.

Tire tubes-arepacked10 in a tin box.

- T USE, VENT-SSAIrs-u, Psncussnon.~

- (Plates LV and LVI.)

Mar-k II tube differs from Man-kIV in not lnaving tine diagonalfire molesinn theanvil. -

Man--k III is- the sameas Mark IV, except(mat tire bottom of tiretube is closedwith a paperdisc and perforated brassbali, embeddedin suipirurandsecuredwith shellac. It in-rn-n-st not be in-n-ed unlesstimerange is clear. BeeNotes, page86.

Mark IV.—TInis consistsof a body, anvil, stn’iker, brass- washmor,percussioncap, copper- wasiner, two paper discs, amid a cork plug.‘1~lncbody-ismadeof brass-,solid drawn; a mole is drilled tirroughtheircadto n’eccivetine striker, whichis secun-edin positionby beingrivetedunto tine countersunkwaslrer,as shownin (lie Plate. Tine upperpartof tire chamberis screwedannd fitted witir an anvil, on whicin is placedthe percussioncap,tire uppersurfaceof whicln is in con-rtact-with tinestriker; a sn-nailcoin-ti-al amndtwo diagonaljim-c molesaredrilledtirroughthe anvil. The remain-rderof (ire sin-acein tine tubeis filled witin loosopistol powder,and tine bottomis closedwitir a paperdisc and corkplug coatedwith var-mis-In.

itction-r.—Timis is the sameas Man-k VI tube,exceptningtirab thestrikerof the tube,togetherwith tine percussioncap,is driven on tothe anvil, tirus firing tire tube.

Mark V tubediffersfrom Mark VI in tine fun-rn of tinestriker, winchis without tine cup-shapedgas-cheekandthedetonator,wlnieir is heldin position by abias-sscrewedcollar. The tube is filled witin R.L.G.n-powder, (ho initers-licesbeing filled up with R.F.G.n-powder,but inlatestmanufacturea special fine grain powder (tires-c filled on orbefore 14th Dccennber,1899, were filled with pistol powder); it is-closedwith a paperdisc arid cork plug coatedwitir varnish. Tinsmarkwill be usedup for drill andinstructional purposesonly.

Nark V. tube consists of a body, striker, detonator, detonatorholder, two wasirers,smearingwires,two paperdiscs,andcork plug.

Tine body is of solid drawn brass, tine mend is bored centrally forthestriken-,detonator-and fire chairnd. Tire stn-’iker is of brass,witina needlepoinrt anda plain flange at its base,underwhich is fitted acopper,cup-sirapedgas-check,an-nd it is- meld in positionby a coppers-bearingwire passedthrougin (he tribe and a bras-s wasinerinn tinerecessedIread.of tire tube. The detonatoris fitted into themolder,and the latter is screwedinto the body of tire tube. Under thedetonatorhrolder is- a copperwasherand a disc of fine white paper.The lower pant of tine tube is- filled with R.F.G.n-powders-iftings, orelseaspecial fine grain powder(pn-osen-r(manufnicturo). Tire tube isclosedwith a paperdisc andcork plug, winch is- coatedwith varnish.

* PercussiornVS. tubesof presentrn-manufacturearc blacked,andmarc fonrrnnotchescut inn tire n-inn of tine hcrrnl to distinginishtinem fronni wirelesselectrictubesby sigint or tonnoin, Prcviou~issuesof V.5. pcrcussiointubeswill be similarly dealtwitin on passiug tlnrorngin tine OF. fon’ amy coavcrsion. rl’hnjS will not necessmtatoanyeinnnmngcin nn-unnen’nni.

- 83

- Acfion.—Onfiring theguntire pointof tirestrikerof thepen-ens-s-ion-ilock drivesthestriker of the tube on-i to the detonator,thins firingtine tube,thefinsli passingon to tine charge.- Packed10 in a tin box.

- Tcns, Vmn-cT-SEALmNG, PnlicUs-s-ION, Danmia.

(Plate L VII.)Mark 1.—This tubeis of gunmetal,tire interior being boredout

mind tine head fitted to receive tine coned india-rubber plug. Tirelower por’t ion-n is closedby a gunmetalplug. -

- Mar-k II differs from Mark I in beimng madeto the samedn-mennsnons-astheservice tube,in maying four longitudinal grooves-on the body14 inch long, in tire rim of tire headbeingmilled, in the diamn-reterofrecessin in-en-nd being ~25-inch insteadof -2-inch, and in tire bodybeingblackedall over.

- Pan-ins-rn-, Varn-r, Cor~ntrn~

This consistsof a s-tick of cordite,size 20, cat 4 ~5 incheslong.It is for usewith powderchargesan-id vent-sealingtubeswithout ball,andis put in tine vent after thebreechis closedand beforethe tubeis inserted.

Packed10 in a box,

- - NOTES, -

- Tn-n- tIre eventof a tinbo failing to ignite tine charge,cares-mould betaken in extractingthefired tubenot to standdirectly in rear of tinegun-n, ns tire gasgeneratedwill causethe tube to fly out witir sonnoviolen-rce wheneasedby (ho extractor.

- The vent sonnet-mmesbecomeschoked with residue from- thecartridge. It should beclearedwith a n-imcrvent axial” sufficientlyto allow of tire insertion of a tube,ivhicin, when fired, -will removetIre restof time obstruction.

Caremustbetakento see(mat the rangeis- clearwiren usingvent-s-cairn-mgtubeswrtbn ball (Mark Elf, percussion)for clearing tine vont,or any otlrer purposetlnn-rn regular practice (in-n winch casethe ran-n-gewould, of course,be clearbeforefIrimmg), as the brass-ball is projectedwith considerablevelocity by tIre powderin tire tube.

87

RANGE TABLE for 9~2-inmcinB.Tj. Grin, Mark JX (full clran-’ge).

Based on Practiceof 11 and 13. 7.08.

)Jlinnmnte45,700.L1552

rwcigmit 100 lb. -

I . - sio Muzzle vclocnty, 2,601f,s.Chan.go.~gravn-nn-etrncdensnty,

L nature,cornlitns, ~ 44 Natureof nnonnnting,bnrbette,Mnrk 111,

~nature,common smell, poinnted, Jump, 7-~minutes, n-ncgnntivc.Projectile~ Mark II.

Lweiglrt, 370 lb. Correctedfon gnnmn on sanrrelevel as target.

i minutes’ dc-5. 2 van-ron ordepres— ~ n-n-per cent, of rounds~ i slomm alters S s- shouldfarn in

o ~ pointof ninpaci a

2 fo

~ o~’~ I? —°o- ~r~P2,in ~ -~c ~a n-~ a ~- ‘~ a E-o 5~

is. yards. ‘ n-n-cnn-s. yards. ° ‘ yards. yards. yards. yards. seconds. inches.2571 2833 0 3 250 0.14 0 10 100 o~ is-s c-ia o’os 012 3202542 950 0 6 rn-s o’zs 0 ma roo ci 20-0 o’nm o’os 0-24 in’s2513 633 0 9 164 0’43 0 16 300 n won o~ro 0-ni o-ms mn-nm2-185 477 0 n-i ne-i o’ss 0 19 400 nI no-on o-ns 0’14 0-48 305inn ss-i o n-n n-n-a 072 0 ni n-so n~ non-n- o’~n 0-ni 060 300

2431 mn-i 0 18 158 0 ~87 0 23 600 n-~ 20‘05 025 a ‘no 0-72 29-5240-1 285 0 21 rn-s 301 0 in- 700 2 20’07 0:28 0’~8 0-84 2902375 24.n- 0 24 rn-s i’ns- 0 29 800 2. 2008 o’nn 0-20 0-911 is’S2350 201 027 is~ nan o an ooo 2 20-09 0-35 o-zn n-os 28’O2325 178 0 an mo P45 0 31 1000 3 2P1 018 024 1-2-2 27’S

2300 160 034 148 160 0 37 1100 3L n-1’3 o’40 0~25 P3-i 2702274 143 0 38 146 174 0 40 1200 3~ 21-4 043 0 ‘27 1 ‘41 2602250 n-an o 41 n-44 n -89 0 43 1300 4 zr-s 0-47 0‘29 n-CO 26’i2220 122 0 45 143 2-01 0 46 1400 4~ tin ~ on-a 0 -31 n ‘73 25’S

2203 rn-n 0 48 141 2-18 0 49 mn-so 4f 21-8 0-54 0’a-t 186 254

2180 mOO 0 52 139 232 0 52 If,00 5~ 22-0 0’57 037 200 2502117 100 0 55 138 2-47 0 si nzoo ni 222 0-59 089 2-14 24112135 03 0 59 137 n’sr 0 is mn-so n-i 22’4 0-61 0-41 228 242inns n-s n 2 135 276 1 1900 G~ 22’S 063 043 241 23’S2095 83 r 6 133 291 1 4 2000 (34 22-6 0-66 0,15 2 ‘no 23-i

2075 80 3 9 n-at 305 1 7 2100 (3.~ 22’S 069 050 269 2322055 ii r n3 ~29 320 1 Ii 2200 73 230 0-71 0-52 283 2182030 7s 1 16 128 331 1 14 2300 7~ 232 074 055 zns 225zen ii 1 20 127 849 1 17 2400 8 2~’4 077 058 313 2221998 68 1 21 125 3-63 0 in zn-so 81 236 0-80 O’tH 328 zn-s

1980 65 1 28 124 3-78 1 25 2600 8-1 23 ‘8 0-83 064 8-43 nr~s1863 6! n 32 mm 3-92 n 25 2700 9 2-1-0 0-n-S 0-68 3’iS 2111945 60 1 36 123 4’07 1 31 zn-so o~ 243 088 071 ~‘73 mo1925 n-s 1 40 122 421 r 35 2900 91 24’S 0-90 074 3’s-S 207morn 55 r 44 121 436 5 18 3000 101 24’8 092 0-78 4-03 20’S

mn-so 53 1 48 120 4-51 1 41 3100 104 250 O’14 0’8i 4’l5 20’2nsst 50 1 53 119 4’Ci 1 45 3200 nn 25-2 097 0’85 4~34 2001865 48 n- 07 inn- 480 n 4~ 3300 ni~ 25-5 1-00 089 450 19’7mn-so 47 2 2 1~7 4-54 1 53 3100 mm 25’i n-on o’on 4’c11 Is’s1515 45 2 6 116 5-09 1 56 3500 12 zn-n 1-05 0-98 4-82 19’3

1820 43 2 11 115 513 2 0 3000 12} 26’Z 108 P02 4-98 191n-n-OS 41 2 16 114 5,38 ‘2 4 3700 13n 28-5 n-no i07 5~24 n-S’S3792 40 2 21 mr3 5.52 2 8 3800 13~ 26’8 P13 112 5-30 18’61778 38 220 152 5’67 2 12 3900 131 27’O n-mi n’mi 5’40 IS’41761 17 2 31 non 5’81 2 10 4000 141 27-3 1’zO P22 562 182

1750 35 236 inn 5’96 2 19 4100 14~ 27-7 P23 i’m— 5-87 iB’O0737 33 241 110 611 ‘2 23 4200 15 271 1-28 1’35 5•93 57’S1724 33 2 46 110 615 2 27 4300 15~ 251 P27 1-38 6’lO 17.617i2 81 2 sn its 6’40 ‘2 31 4400 16 281 P30 1 ‘44 6-27 17-41699 31 2 50 108 6.54 2 35 4500 16~ is’s r ~ I ‘52 1144 17 ‘2

- 88

Et.tNUE TABIh fon’ 92-inch B.L. Gun, Man--k IX—conUn-nued.

-~ 11

~

.‘- 50 percent,of romnnds2 8 should fall in2 ______________--

4 ~ .2-n~ •6

on- a a

,0bS

0

aI-,

0

.0 ~

5-

50000

5,

Sa

Os,1685mom-i1655na-i-imn-mnmansIn-cnn-159-n13811568

1055104210291517noon

1402140014671455n-n-n-I

14321419140713931

1184

13731362135213401320

1320150912981208mb127012(30125012-121233

12231213120411941185

117611(37Ills11001142

113411211innslImo1102

1090moss10821075

Ion-i’

S mnninontes’ en-c—vatiotn ordeprcs-

.2 slum alter, poinn~ of nmnpacn

~ 20 5.1

— 00 ““.,, ~.. 0

-~ a a

yards, yards. 0 yards,3 2 108 *J’69 2 39 4600

1 8 107 O’bn 2 43 47003 14 107 60S 2 47 48008 20 106 l’13 2 -51 49003 26 lOS 7’z7 i 15 50C0

332 101 7’42 2 09 51003 19 103 7111 3 4 52003 45 102 7-71 3 8 5200:1 r2 ion i’ss I ii .54003 59 100 8-00 3 17 5500

-m Os 8’14 3 21 56004 13 98 8’29 3 26 37004 21 97 8.43 3 30 58004 ‘iS 06 8-58 3 ml 59004 ni 05 8-73 3 39 6000

4 45 93 887 3 44 61004 51 92 9-01 3 49 63005 2 tnt 9-16 3 53 63005 II 90 9’nO 3 5-8 (3400523 89 945 4 4 6500

020 8S 9•6O 4 10 6600O 51) 87 9’74 4 1$ 67005 49 86 9’85 4 20 68005 59 83 10-03 4 25 69006 no 84 I0’18 4 39 7000

621 83 1012 4 56 71006 32 82 10-40 4 42 720011 4:1 n-r no~co 4 47 73006 55 80 10 ‘75 4 03 7-1007 7 79 ro’8s 4 59 7500

7 19 78 mr-u-s s -s 76007 31 77 11-19 5 Ii 77007 41 76 11-31 5 18 7o00,7 57 75 11’48 5 24 79008 10 74 rn-Cm 5 30 8000

823 73 nn ‘77 5 37 81008 17 72 11-SI 5 43 82008 51 71 12-07 3 49 83008 S 71 1221 5 56 84009 20 70 rI-In- 6 4 8500

O 35 70 12-51 6 11 86009 50 nil) ri-os 6 18 0700

10 0 68 1250 6 25 8800no 22 so 1291 6 32 8900no nn- si nm-os 6 39 9500

15 54 66 li’25 6 40 0100In- Ii 65 1318 11 54 020011 28 66 1353 7 1 93001145 6-I 1367 ~ 8 940011 ‘2 63 il-si 7 57 9500

12 20 63 1306 7 zi 960012 38 62 1-PIn 7 32 970012 50 Cl 1120 7 40 on-ann13 14 60 14’40 7 48 950013 32 59 1-155 7 50 10000

ni so 58 14-69 8 9 10100n-4 9 57 14’sn $ 14 1020014 27 56 liOn- 8 22 roson-r4 46 os 1S~13 8 31 10100

15 5 55 Ii27 I $ ~ j 10500

yas.

2828

20

25

242323

22

212020

2020191$m7

1716III1015

15

1514

1413IiInml

1!n-n1110to10no1059

98888

87777

7II60

161174li-in8~18I

nomob2020~

21122z242323-4

24241

20

26}2727128281

no29130

yards.29229-529’S30’l30’4

30’831’lil’Snr ‘832’2

32-63:1’O33,433’S3-1 -2

mn-a35’o3543.5’S

30’637137130-038’4

38’s39’m39’s40-i40-7

41141-742-242’T43’2

43.74-1 ‘344-845’i45_s

46-547047’648-248 -8

49.349-850’4sr-o511

yardo,1 ‘361 ‘401 131.471 ‘50

1 ‘5-I1 ‘581 ‘621 ‘661 ‘70

1 ‘74n ‘77

1 ‘801 ‘811 ‘85

n- ‘921 ‘962’Ol2’OS2’09

z ‘m32’13

‘225230

2 ‘342’382’422462’Sl

2’502’5926320)32’70

2’742-78

22’OO

2953-00:1 osn~in3’27

3 ‘23m ‘no8 ‘3734531 ‘52

yards,1 ‘58I ‘651 ‘73

‘851 ‘90

2-002081‘18

2

z’so2 622742862 09

3’lO3 -233-373’Si3 ‘69

3 ‘834 ‘CO4164.3-i450

4104-895’OS528O ‘47

5 685’906 ‘146586’62

6-897-Is7 ‘-137718-1:0

8308 ‘6328-949270 ‘62

9 -0510 ‘50no’cs11’os11 ‘44

11 ‘8412-2:112-6313 ‘0513 ‘45

13 87142814-7015 ‘1215 ‘05

seconds.6106 ‘776‘937’lO7 ‘27

7 ‘457 -637 -sn7.998 ‘17

8’mG8 ‘048’728 ‘00in--oso ‘iio 400659 ‘85

nO -05

10 ‘26no ‘47no-Osmo-n-Srn-os

11’aOii ‘SIII ‘7211 9412 ‘16

12 39l263mz ‘8615~10mm’mm

I3’SS11553ni-sIrn-’mz14 ‘57

14-82ns’oI15 ‘332155715’82

II) ‘0716 ‘32161816’Oi17’no

17-31176017-90181718 45

18 ‘7319 ‘00192819 ‘5719 ‘87

1 tches.17116’816071(34162

10’I1591S’7Ii’S15’3

15’2n5’O14’S14’S140

14514414-234’I140

n-a’s33713-013’S131

113m3 ‘z13-012’S12’s

m2712-012’S12’412’3

Iz’z12’l12’OII’S11 ‘S

11 ‘111-6ni’slI’S111

11’ZnI’lII ‘Irm ‘a11’O

b’sb’s10-7ma’s104

10-4103110 ‘210’z10’l

52’2 3m-ar52’S 3’70n-n.m n~~oSn’s 389In-I’S 4-00

550 4-10556 422562 4-3456-8 4’4657-3 4_oS

89

R.UOGE TAIILIO for’ 9’2-innch J3.L. Gunr, Mark IX—conUuuenl.

I nn~neoico’elii- ‘~,S~5, .S’o~ vation or depics- ~ 50 per cent, of rounds

0 ~ .~ - sionalters 0 — should n-alt In 2~ poInt of impact, .4 .5 ~2 _____ 55 _________________ 5

00 ~ ,~ ~‘o~ cc

-~ ~ ‘~ . ‘ .2

a -i a I~ ~ a a ~

f,~, n-aids, 0 yards, I yam-do, 0 5 yards, yands. yands. yards. seconds. ineiie~.1663 6 ms 21 54 15’43 8 49 10600 ...sn--O 410 16-00 2o’ni no-a1057 6 1541 63 1556 8 58 1000 ,,. 58)3 4-n-It 1648 ‘201(3 mann-1051 6 16 4 53 n5’71 9 8 10800 .,, 592 407 16-87 2075 991045 5 15 25 09 1586 9 17 10500 .,.50 ‘8 512 17-312 2101 581(339 5 16 45 51 10’OO 9 26 11600 ,,. 603 527 17’77 z1’34 S’S

1034 5 17 6 50 16’lO 5 36 11100 ,,, CO’S 5’42 182-S 21’6i 9’71029 5 17 27 49 1629 9 40 11200 .,, On’s ~ss 1810 21 ‘911 9’i1021 5 17 48 48 16’43 9 55 11300 ,., 62’2 576 1927 2227 96ions 18 10 47 16’58 10 5 11100 ,,. 6-2-5 5-9-2 19-6:1 22-59 06mon-i - 5 18 32 49 16-73 10 16 11500 ... 634 610 20132290 S’S

1009 5 18 5-9 45 16’SS 10 25 11600 .., 610 6’zi 20-130 23t’21 9’5n-004 5 19 16 - 44 1702 10 36 11700 .,, 64’6 P45 21’07 2352 9’41000 5 19 39 41 1717 tO 46 11800 ... 65’2 664 2157 2383 9,33595 4 20 2 44 17’31 10 57 11900 - .,, 65’S P8:1 2207 ni-ni 0.3990 4 20 25 43 17076 11 8 11000 ,,, 66’S 7-03 2257 2-144 9 2

986 4 20 48 49 17-60 II 19 12100 ... 67’b 7’2n 2308 2815 P2981 4 21 12 433 17-75 11 30 12200 ,,. aPi 742 23’S? 25-00 92977 4 zn 35 42 ni ‘90 11 41 12300 ,,, 683 762 2105 2511 9’l973 4 22 1 42 1801 11 53 12400 ... 600 7 ‘83 2-156 25’69 90069 4 22 20 41 1818 12 5 12500 ... 696 80-5 2509 2000 50

961 4 22 51 40 1n-’m3 b2 16 121-00 .,, 702 820 25’CO 26’nl 89961 4 23 16 89 18’47 12 28 12700 .,, 70’s P50 1613 26-633 n-_s957 4 25 42 38 in-n2 12 41 12800 .,. 71’S 8’74 2665 26-95 S’S953 3 24 8 mS 18’76 12 54 12900 ,.. 720 0070 27’lS 1727 8’S849 3 24 34 37 18’OO In 7 13000 ... 726 925 zI’n-o 27’59 8’?

916 3 25 0 37 1005 ma no mnroo .., 73-3 010 28’nO 2751 8’7943 3 25 27 30 1020 13 33 13200 ,.. 738 075 28-80 2823 8’?539 3 25 54 36 ID -3-1 13 46 13300 .,. 74’5 10 -00 29 -27 2815 8-6936 3 26 21 35 19-49 14 00 13400 ,,, 75’l 10’nS 2980 28’87 8’O033 3 26 48 35 1963 ni ~4 33500 ,,. 75’7 bOSS 30’37 2918 8’S

929 3 2716 35 1978 14 28 13600 .., 76’4 10’SZ 20’OO 29’50 S’S1124 3 27 44 31 1993 14 42 13700 .,. 771 1112 9l’45 2984 84919 3 28 12 34 2001 54 56 53800 ~. 77’? 1140 3200 3020 8,4

The proportional resistanceto pelnetration of wn’onrglnt.iron, conuponindor nnild stccl, annilrnn-rvcyea armnonnr,may be taken n’osnghlyas I l~,n-t 2.

A 9’2~in-nchconxrnmnonrshell, witln in. velocity of tnbotnt2,000f,s., ninny be expectedto perfnmrateabout6 inchesof llonrvoyednnrn-nonor,if struck din’ect; orabout5 undiesat30°to tire jnormnai,

Under similar circunnstansces,a 02-inch armoun’.piereingshell may be expected to perforateaboutP in-wIres and7 moInesllarreycdarnn-nonnr,anti it wonnid probablyperforate9 undiesof compoundor mUd steelarmour if struckhircct or tnt an angleof 300 to thenormmmal.

RANGE TABLE for 9’2-ineh B.L, Gun,Mark IX (tlrree.qaartercharge).

Basedon Practiceof 5.12.98.

)L,’nute 46,518 III.

95o2

(‘weight, ~5 lb.- 108’O

Uhnnrrgo‘~gn-mnvinretriedensity,0257’ Muz~Io velocity, 2127 £s,lnatun’e, cordite, size41-. Nature of mounting, barbette, Marie III,

r nan-sire,common such,filled. Jump,71 minutes,negative.Projectile~

1weiglnt, 380 lb.

0~’

‘_‘C

e~

~~d

05, 00

e~

n~I-,

s~0

~tan0

‘aIa

0

‘0

0

do0

•6

5 mInutes eleva-tion or deflectIonalters point of

loipact

usa

en-

5,5;

~~

~

85

0

!

—

.5 ~ ~,,

50 per cent, of roundsshould fall in

‘~~a

2~a5-~-02~5

~_

2~’J~‘0°’~

s.

‘~~,~

.

~‘0~

633

.0

.~o

63

.2

.0

.?_o~

‘g,~

i°

Is, yards, 0 yards, yards.2111 055 0 4 125 01-12090 520 0 0 125 0292068 358 0 13 124 04320111 273 0 18 12:r 0-582026 228 0 22 122 072

2006 191 0 27 121 087ion-u ion 0 311 120 1 ‘on191111 143 036 119 1161918 127 041 118 n’nn1950 110, 0 46 117 1’45

bOrn 103 0 51 116 1-60In-sn or, 0S6 ms 17-n1875 87 n n in.-m i’ss1857 80 1 6 mr 2-0:11841 75 I ml 110 218

1825 70 1 17 109 2321809 03 1 22 107 P471793 61 1 28 100 2’Cn1777 59 I 33 IOn 2-7617111 Sn r 39 noi non

17411 51 1 45 100 :1-on1731 48 1 Si 00 3’iO1716 45 1 .57 93 333141702 4:1 z 4 os 33491687 41 z ni os 3-63

1672 40 2 In- 03 3781658 38 2 25 92 3-92lOIS 37 2 32 91 4071611 35 2 39 90 4-zn1617 33 2 47 89 416

1603) 31 1St 87 4511590 31 3 2 86 465157ns 50 3 9 85 45501563 28 3 17 83 4041550 27 3 25 82 5’OO

15311 27 3 33 81 5231524 ‘inn- 3 41 SO S-najill 25 3 50 78 5-521499 25 3 Sn -77 5671487 24 4 7 76 5-81

1-175 23 4 16 75 596116-I 22 4 25 74 6111455 21 4 ~4 7:3 6-251342 20 4 4-1 71 6401131 20 4 54 72 654

0 yards.0 10 1000 14 ‘2000 18 500o 22 4000 26 500

0 30 6000 84 7000 $S 8000 42 9000 46 1000

0 50 1100o si nzoo0 58 15001 2 1400I (1 1200

10 10001 34 17001 18 18001 22 10001 26 2000

1 30 21001 35 22001 40 22001 45 2-1001 50 2500

1 50 20002 1 27002 7 28002 12 29002 18 1000

2 21 31092 28 82002 33 33002 38 34002 43 3500

2 45 86002 54 37003 e 38003 6 30003 12 4000

3 18 41003 24 42005 30 43003 36 44003 42 1 4300

yards, yards,

9 0’S10 0’SIn 0’G11 0612 00

12 0713 0713 0’?1-1 0-81-1 0’S

15 0816 0-017 0’S18 0’S19 D’S

tO 1-020 1-0in i-i21 n-i22 1-1

23 12231 m’n24 1’Z2-i 1’l25 n’m

25 132’3 1427 1-428 1428 1’i

29 I’S29 n’S00 1-530 I’llam nUn;31 1-632 r’652 1-7~ P733 1’?

I

it1.12

2121

4

41

61

S

81S-i01

10

101lb11~111121

121131131141sq35-I151161167171

1718.181920

yacciS.

0 ‘08010O’Il014017

0-no0 ‘220 ‘250’iS0 ‘32

0’160’400 ‘4-80’SO057

0630650’7i08i083

0’951 ‘02i_no10771 25

1 ‘28i’mO1 ‘451 ‘60570

1-801 -902’O2 ‘r2 ‘2

232’42 ‘5262 ‘8

sees,o ‘140_zn-0-420 ‘50071

086n ‘on1 ‘16S ‘mlO ‘47

1 ‘631 ‘801 ‘07214P31

2‘482-as2 ‘822 ‘953 ‘13

3-323 ‘503 ‘673 ‘854’02

4194 ‘374 ‘554.73412

5115’mO5’485’605’SS

6_Or,6 ‘246’446’04685

7-on -7 ‘267 ‘4117 ‘677’SS

6J1~

RANGE TABLE for 9’2-jncln B,L. Gumi, Mark IX—continued.

,-,-~.5

~ban0

-~~

~

‘‘5~

~

o

~“:~,0~~

~‘~,2

I-’

Smlnuic?eleva-lion or deflccdionalters ponnt of

Impacl

.s..,1.

03 ~ao~~ ~

-4 n-

.~6

~

~51

ab

~a

~‘i’-6~

~,,5~.

~a~a‘31,’-’

‘°~

~o,

80 per cent, of roundsshould fall in

—.

~

~ ‘~ ~°,-n- 63 63

°~

~

~

.~r~,

f,, yards, 0 yard,. yards. 0 yards, yards, yards, yards. sees,n-wa no 5 4 70 600 3 48 4600 201 14 1 ‘7 80 8 -091409 18 5 14 71 6-83 3 5-1 4700 21 3% I’S 31 5291308 18 S 24 70 698 4 0 4800 211 35 1-8 3-2 8101387 17 5 34 09 7’13 4 7 4900 227 35 PS 34 8-7211176 17 5 45 60 7-27 4 13 5000 227 36 1’S 36 801

nnos 10 5 55 68 7-42 4 19 6100 257 16 19 3’S 5151355 15 6 6 65 7 ‘56 4 20 5200 21 :17 1 ‘0 4’O 0 ‘371343 15 6 17 07 771 4 33 5300 2-57 317 I’D 41 9-581332 15 6 28 67 7 ‘85 4 40 5-tOO 25 38 n ‘9 4 ‘2 9801321 14 6 40 66 800 4 46 5500 257 38 2-0 4 ‘3 10 ‘02

n:mno 14 6 52 66 81-1 4 53 51100 267 19 P0 44 10-241207 13 7 4 65 8-29 4 59 5700 2O~ 19 2-0 46 10461285 13 7 17 65 8’4n 5 6 5800 271 39 20 49 10681274 13 7 20 61 858 5 12 5900 28 30 20 52 10001201 12 7 42 61 873 5 19 6000 287 40 2’i 54 1113

1253 12 7 55 03 887 5 20 6100 207 40 2’! S’S 111012-53 11 8 8 63 900 5 34 6200 207 40 20 57 11601233 51 825 02 016 5 41 0300 ,,. 40 2’l S’S 11552

~ 1223 .11 8 35 62 930 5 49 6100 ,., 41 2’2 50 12081213 10 8 48 01 S ‘45 5 57 6500 .,, 41 2 ‘2 62 12 ‘33

~— 1203 10 9 2 61 960 6 S 6600 ... 41 22 65 1253(31 inst ma in 10 60 974 0 II 6700 ,,, 41 22 08 1283~ 1185 10 9 10 60 0559 6 20 6800 .,. 41 22 72 haSL 1176 15 044 59 10-08 6 28 6900 .., 41 23 75 13111C 01138 9 ii 50 50 1018 11 37 7000 ,., ii 2-3 1-8 1360

~ 1160 1 15 10 14 58 1032 6 45 7100 .,. 41 2-3 81 13851152 8 10 29 58 10--nO 6 sn 7200 .,, 42 2-3 P4 14101144 8 10 4-1 57 10 ‘00 7. 1 7300 .,. 42 23 86 1433 -11317 8 Ii 0 5? 1076 7 5 7100 ... 42 P4 P9 116011110 8 Ii 16 56 1089 7 17 7500 ... 42 24 9’O 1180

.4 1021 8 11 32 65 lOot 7 26 7000 .., 42 24 94 1613~ Ill? 8 11 48 55 11’19 7 35 7700 ,,. 42 2--I 9-6 15-59

1110 8 12 5 54 1134 7 44 7800 .., 42 2’4 9’O 15661103 7 12 22 51 lO’48 7 52 7900 .,. 42 2’S 10-2 15011090 7 12 40 51 11031 8 1 8000 ... 42 25 10’S 1617

1089 7 12 57 91 1177 8 10 8100 ... 42 2’S 10-a 164:1108:3 7 18 15 53 bi’02 8 19 5200 ,,, 42 2’S 10’? m6’701076 7 131 33 03 12-07 8 28 8300 ... 41 2’S 10’S 16971070 7 13 Si 52 1222 8 38 8-100 .,, 41 2-5 10’S 172-110111 7 14 0 52 1236 8 47 8500 .,, 41 26 104 iT’Sl

1058 7 Ii 25 52 1250 8 56 8000 ... 41 211 503 17-781033 6 14 47 51 12’65 9 6 8700 .., 41 2-0 102 18 -0111048 6 15 6 51 12-80 9 15 8800 .. 40 2’S 10 ‘2 18’341042 6 15 25 00 12-05 9 25 8900 ... 40 26 104 18621030 0 13 45 50 1309 0 35 0000 . 40 20 10’S 1800

10310 0 16 S 50 I3’24 9 45 9100 ,.. 40 2’7 11) ‘8 1O’181025 6 1625 50 13’18 5 55 9200 ,,, 39 27 110 101(13020 S 16 45 49 1303) 10 5 0300 .., 30 2’? 114 19745015 5 17 11 49 1367 10- 16 0-100 .., no 2 -7 11 ‘2 20-0:11010 S 17 27 48 1381 10 27 0500 ... 38 27 11-5 20 -331

10031 5 17 49 48 1390 10 38 0600 ... 33 2’S II’S 206_S1000 5 18 11 48 1400 10 49 0700 ... 38 27 117 20’Dl

595 5 18 33 47 14’zG 11 0 0800 .,. 37 2’7 10-S 2120950 5 18 55 47 14’40 11 10 0900 ,., 37 25 1113 2140585 5 19 18 47 1415 10 21 10000 .,. 36 28 020 2175

981 5 19 41 46 1-1-69 10 33 10100 ,,. 36 2’8 120 2206977 4 20 4 46 04’84 11 45 10200 .. 35 28 123 2234072 4 20 27 49 1418 11 57 10300 ,., 35 2’S 12’S 22621168 4 20 50 45 1513 12 10 10100 ,,, 35 2’8 120 2210901 4 21 13 44 1P27 12 23 10500 ,,. 35 2’S 13’2 231’18

92

RANch Tsjn-r,c for 92-inch B.L. Gun,Mai-k TX—continiieJ.

5;.0,~~~an

.‘~

~

213 0.,n-. a ‘0~

~

~

~

~

1~

S mInutes’ cleva-lion or deflection

- altcrs polnn ofimpact

5’

‘~ 5,

‘0 . -

~ ~0 ~

I 01 ,~ 5’

u~

~06

.

~01

~“ ~

03 ~.5 “

5,~,,7.,‘.‘O’’

~

~S,

~5,

10 per cent, ofroundsshould fall within

4 0 .2

I ~,~ 63 63

..0

;~

‘0

.~to

1.s.0609559500-IS0-n-i

078on-i929025020

915010

yards.4444a13333

33

‘21 3722 122 2522 4923 14

23 3024 42-I 2924 iS25 21

254726 13

yarnls,4342414039

3837363535

3434

yards,15 ‘42155615 ‘7115’851600

56’1516’iOl6’43165816 15

168817’OZ

‘12 3612 4913 2in Is03 29

53 4213 5514 914 2314 36

14 0015 3

yards.1060010700108001000011000

11100112001180011-40011100

1160011700

-

...

...

...,,.

.,.

.,.

...

,..

...

...

...,.,

yards.3433333232

3131313030

2929

yards.2’S2’82-02’S2’O

2929202-92’S

2930

yards.03’S55-814-154404’?

15015215’S15-7150

16’I163

sees.23’4623-7424 ‘0324’3124’GO

248925 ‘1825’4725752604

263426-63

RANGE TABLE for 9’2.ineh B.Ji. Gun, Mark IX (HalfCompositeCharge),

Bascll on Pn’~etice of 23,7.00, previousto whichthe Gmnlnnd fnro~,8 proof and40 full charges.

.lflnsnle 40,750 I (b).

rwoiguru, 511 lb.16n-J’7

Charge, ~ gravimetrie dennalty, 0 ‘174’nature, 49~lb. cordite, size-14,

L and, 2 lb. cordite, size B~.

Tclnlpernnttnre, 75-1 degrees Falnn’enlneit.

~nature, cast,steel pointed1’rojectile,’~ c’otoomon such, Mark II.

Lwcig1n~,380lb.

Mnnzzle velocity, 1,032fe.

Nnctus’e of mounting, bnis-bctte,MaskIII,

Jump, + 1 nnsinute.

50 pet- cent, of ronnndsshould fall in,

to

.0.0 .. •~ 0

~ ~ f0 a,,_ ‘0 0

“4 63

0,,

5,05,

a,)-005no‘3.5SQ0’11

f’s.1(11?150311581)157515111

151715381635)15031-193

1470140034535-1(01-128

1-1101401179333811370

1-1.58- 1-117

1331813253314

1103121(3528312731213-1

125-11215123(112251220

0~13

0

a, —.16-0

yan’ils.818409‘273201161

133112

517

577-7

7063585450

45434038‘.Ini

315128021323

2025212:322

2120191818

5 minutes’elevation or

deflection elton’s

- point 01 impact.

5,,.‘0 .

‘-5 in1) .h~506 135,0 °‘

01

o yards. yards.O 7 85 014(3 14 83 020o 21 82 0430 28 81 0580 55 80 072

0 43 79 0870 51 78 1010 59 77 1151 6 70 P311 14 7-6 1’-lS

7 22 74 8101 30 73 1741 38 72 i’SO1 4(9 71 2’031 SO 10 218

2 3 09 2’322 12 68 2472 21 0? 2’Ol2 30 (18 2702 59 05 ‘291

2 48 (1-1 3’OS2 55 (33 3203 7 62 3’n-l3 17 111 341)3 27 00 3553

3 58 59 0188 49 58 31(24 0 57 4074 11 6)1 4-214 22 55 4311

4 33 5-1 4514 41% 54 4551s4 07 53 4805 30 531 45515 29 52 5’Ols

1’)0en-a63

yard,.1(8)200:11)34501500

6007008001)00

11)0(9

1100120013001400liOU

160017001800110)02000

21032250230024002500

260027002(9)029003000

310032008:1003-1003300

5,

5,0

6

0_a

1)110

1011171112l’l

1371414~35If;

noii171818

0

‘-5

St~863

0)50 320 180 230 31

o 380 45o 520 591(1

5 131 201 27I 141 41

1 481 5,52312 112 19

2 272 8.52 43‘2 612 50

3178 153 248 823 41

3 503 61)484 374 24

yards, yard,.

3-1-5 030311’3 03237’2 0’31533’O 037itS’i) 0’-rO

58’? O’4240)1 o’454n’4 0’4741’3 0’SO43,2 062

44 2 0-5345’2 0’5840’2 00147’.3 0044S’4 007

49’S 0105050 0135n’i 0’7115255 079541 012

55’3 08356’S 0’8857’S 001151)1 0’94(iOn- ((-07

61’S I’OO(33’S 15546-1’7 1 ‘07(3112 I’ll(17’7 n’lS

Yards,

040o ‘4))0’Sn-O’OS0,78

O’i)oI’031 ‘1(3~‘301,-is

t’Ol118

2’lZ229

2’4723172898128311

333235504’iO43324 ‘5)1

5223’ ‘51)5 ‘57(3 ‘311010

sees.3)190.550’S?07701(11

1 ‘351551 ‘751 ‘95

211230,2’S-S21(12137

3’lS83133:003814 ‘03

4 ‘244’4)14 ‘3384 ‘1)0P12

6-355-585826’O(16 ‘110

5 ‘31.5(I’S))7 -03’,7 -307-55

04

IlAN~sTAJILE for 9’2.inch B.L. Gun,Mark IX—conl-inuea.

5 taln,ite,’ -elevationor -

deflectionalter,pol,nt-of impact. -

— —‘ n- -0 ~5’oI ‘so ~ - -a63 ‘~ —~ 63

yards, yards. ° ‘ yards.52 523 4 35 360051 5’:nS 4 44 370))51 552 -1 5-1 380000 - 5’S? 5 4 39(1050 081 5 1-1 4000

4)) 59)0 5 2-1 410040 (i’ll 5 31 420043 325 5 41 4701)-IS 0,-jo 5 505 4(0047 055 (3 5 4500

47 0111 010 40004(1 083 (3 26 47)104)1 01)8 (3 37 480045 7 1:1 3 -18 480045 727 0 5)) 5050

41 7’-12 7 10 S10041 7 ‘5)1 7 22 5)0043 771 7 33 55)104$ 7 ‘805 7 45 5-00042 800 7 57 1500

42 814 8 1)530041 82)) 8 21 570041 8,-In 8 33 53)1043 858 8 45 5901)40 873 8 58 6000

39 8’S? 9 11 (3100‘.19 1) ‘01 if 2-1 6200

:18 916 Sf ‘31 0110033 0550 1) 50 0-10038 015 70 3 (3500

38 1)00 10 16 600037 971 10 29 670037 985) 10 43 630037 10-03 10 06 6000137 1018 11 10 7000

38 1072 11 23 710036 10-1)1 11 37 7200303 10110 11 51 71)003(9 1075 12 5 7400~l6 1089 12 10 7500

36 1101 12 33 70-008)3 11 ‘1)) 12 47 7700311 1I’34 13 1 760038 1148 13 15 71105)3(3 11 ‘031 13 29 8000

1-55

so.0‘31.5

f-s.121212011111)3118811-31

117:3110)31115811501011

11317113(1)112111181112

11(3111))))193)1103-11082

31)7711)7 2

3)0111015))

11)50,103’s 11)117loll]0I1~)

3037103$10:0)11)271021

11)2111)1810153 ff12100)

101)030)310))’)1)1)791)1

0_S

“0

~ a,

Iio_~0 -~5,9,n4__ o 0

-n-nc 5,53-_S~56 .5~~ -~

yards. -517 5 3516 5 48111 fl 215 6 IfS14 6 :10

1-I (1 44n:n 6 5311:3 7 13SIn 7 2812 7 -In

12 7 5811 8 1311 8 2))11 8 -1510 0 1

If) çf 1710 1) 3110 Sf 51

O 10 8Sf 10 20,

1 10 43Sf 11 1)8 -11 n-S8 11 368 jnn 51

8 12 128 12 313 12 41)

- 7 13 87 53 26

7 331 -11’,7 11 -i(1 1-1 230 11 42(3 15 1

f’s 141 200 15 -no1; 1)1 0(3 1)1 201 1)1 40

5 17 15 17 215 1? -11-5 18 25 18 22

.5 -~~ 00 percent. of rou,,ds.5 , should fall in

o ~ -00

1)5 ~ ‘~ f0Nc-n ‘ ~ ‘~ 0~ ~,

yards. yet-do. yards, sees.30-3 693 110 317 780207 70-8 124 733921 72’4 1’29 802 835)21~ 74,0 1 ‘114 8 ‘4f - 8-50,29~ 756 140 00Q 881

23 773 1’46 0-S - 11-0723ff 700 152 10’l - 033:12-la 5,0’? 1338 10’? - 1)5020 824 1 ‘65 II’S 1)8)3257 841 172 11’)) 1013

2(3k 8511 180 125 1040277 87 ‘6 1 ‘88 131 100723 894 1550 137 101)52-° 1)01 20-1 3-I ‘-1 31 ‘292lf~ 02’)) 213 0533 11’SO

II) 1)17 220 158 1177ff65 2,3)) 160 12050855 2555) 17’S 3231:1

1002 2’4S J8’4 12(313021 258 103 12’S))

00-10 2(38 20-2 13181050 2’78 212 13’47107’)) 288 222 137(910Sf 8 21)8 23-2 1-1051118 3’OS 243 1435

313’? P18 254 14 ‘(10,115 ‘7 828 26’S 14 ‘95

--- 117 ‘7 3 ‘38 27 ‘6 1525111)’? 348 28’? 15333’121’? 358 20’S 15553

1237 368 309 lfl’l.S123’7 378 321 164.51278 388 50--I 16-7)1120’S 31)8 34,7 1707131-9 408 3(3,0 17’38

1339 4,19 37-8 37555)1360 4-30 3855 18-001830 441 3011 18311403 4-52 41 ‘2 18631421 4.63 42,5 181)1

1412 47-1 43’S 19261462 4-85 45’l Hf’s?148’S 4-06 46’s It(S))351)11 5 ‘07 48’)) 2020152-1 5’lS 4)1(0 2052

95

RANGE TABLE for ~‘2.ine1i B,L. Gnus,Mat-ks IX and, X.(Composite,Full Charge.)

Basedon Praeticoof 16,7.00,

40185

21Thenn1e~49,087. I, 401830

Chingo (weight, 103 lb.- , J gn’avinosetricdensity, 78’S Muzzle velocity, 2(3-13 f,s,0’351’nature,90 lb. cordite,size44; anod Natureof nnsotnnting,lfarboUe,Murk III.

L 4 lb., size37. I[nature,cast steel,poinnte(l,coin. Jump,

73n- minutes, negativo

Projectile, -~ noon shell, 1%fnrh II.Iweight, 380 ib,

s.~~,0.

i?:~

~

S.~~a .0~

a,~~~

5 notnutes’elevationom’

deflectionattcr~.5 point of Impact~11-~ -5’’

‘6 ‘31 ~ 17550.5

,3

~

~- ~--~~~,

.5 ~ —

a,P~d.0

~“~3n-3~

~-~k

50 per cent,ofroundsshould fall in

,e800

,~

.0

~‘a5,63

.0

b1~

63

0

4.0so

cc“0c.~

‘6

~‘~3

~z~~8-.

f,s,26102692256825442520

yards.28641140767572485

0

0 30 50 70 100 12

24002472244824242400

382118274209212

0 150 180 210 240 27

237723842332201022(38

19117315-)145134

0 300 330 360 400 43

22672246‘222522052185

125317509102

97

0 460 400 530 %s)0 59

21652146212721082090

0288847975

1 21 51 81 121 16

20722055203820212004

71686S6259

1 201 241- 251 321 36

308830721951319401025

5755535540

1 401 441 480 S’S1 50

19103895188018681850

4846444341

2 02 42 02 132 18

yards.212230228220224

222220258216211

212210208206204

20220019819011)11.

102100185186184

182180178170174

172170365166164

162160158156154

yards,0 140’290430 ‘580’72

0’S?1’Ol1 ‘10I -IllO ‘45

1’60O ‘741 ‘85)2-032’55

2 ‘222’472612’762131

3’os3’203,543.493 ‘63

3783‘924 5574214.33

4514654804’S-II’o0

11 -23S‘IS5 ‘525-67Psi

.“

7~n-f

0

yards,,,.,.,

,,,

,.,...

yards, yards.

.,.,,

seconds.0110’230’3S047P59

inches.‘.32’5032’lZ31’6931’2f130’84

fl1~22123

‘SO’S205520820’S211

025 0’13028 0’lG031 017035 0180-38 O’l9

0’Tl0’830-95l’oT1’Its

301-330’0329333‘2033’528’S3

33733443

21321421 ‘621’?21 -S

0’400430 ‘470500-14

0’200-220 ‘240-260 ‘28

1-331’421 ‘551681 ‘80

28’4328-03327 ‘6327’2326’S-I

4i5575~57

22022-222-422’S22’6

057013)0610630338

~‘300-3203403130558

1.08P062192’32‘2’46

20’40‘26502257025’3S2500

676~677777

22’S230232234231

0-600710’740’??080

0-40P430450’Sl0335

2-602742’8835523’16

2133524’3023-902355321554

(3878-3997

23’S24024’S24’S24 ‘8

0030850580-900 ‘132

0590333033505530 ‘78

3303443’593133 ‘88

230022559‘22’S)220921 ‘80

1010710731117

25’O253325’S215-7200

0040971001031105

083P880-0:)0’S)1’03

4034’lS4134494’64

2P512l’222013720’?220’4?

12127127333157

26’S20-S26’S27027’S

1-08l’lO1’13l’l?1’ZO

15081’141’20l’26I’ll

4’SO4035’Il5275-43

20’22191?19’731155503P27

0 110 14o jo0 190 21

0 240 26o 200 310 34

o noo 390 41o 440 40

o 4tf0 510 540 5710

1 121 15

1 181 211 24O 271 31

1 141 3SO 411 401 45

1 52I 551 59222 0

yards,100200300400500

600700800900

1000

01001200130014001500

16001700180030002000

21002200230024002500

26002700280029003000

31001200330034003500

36003700380030004000

96

RANGETABLE for 9’2-inch B.L, Guns,Marks IX andX—conUnuecl.

8S

0 , a.~

~.0

~a-C~ “°°~‘6 5~6.5

‘31 ~_4(3- 05 0~”~-.

fe. yards,1820 401822 39180ff 3?

- 1796 3(91783 35

5minutes’elevatIon or

deflection altersc pointof impact

~a C

‘° .~‘ ‘ - 20 , ‘31 ~ ‘S.5 .5, .

2~.5l

00 0 5, 50 .1 ~?

“1 63 80

0 1yard6. yards,2 23 152 5’5f6 2 92 25 150 6-11 2 132 13 148 6’23 2 162 38 146 P40 2 202 43 144 6’54 2 23

17701757174417311718

143333Ifl50

2 4925-1n 03 53 11

142140134136131

6’6961369—)7137’S?

2 2?2 312 352 382 43

370516921679160?1055

2028212026

3 173 233 293 133 41

132130128126124

7’4275(97’71?‘858’OO

2 472 512 552 593 3

16431822162110(01600

2.52-I232322

0 483 554 24 04 16

122120118116216

8148-298-43858873

33 II3 153 183 23

159015801057011)1015150

2121202019

4 234 304 574 454 53

112111110109105

88?9019169’30P45

3 273 323 163 413 45

115101530152015101501

1915381717

5 15 5)5, 185 27S 16

10?1)30105104193

P6095548’89

100310555

503 143 594 44 0

149114821472146314151

17161111815

5 455 Si6 36 136 23

102101103

09IS

1032104110-8-0105581059

4 144 194 244 294 34

1410,3434112?14181-109

II14141313

0 3304116 547 47 15

5796Sf59453

31’S-I11191135411’481163

4 404 454 514 575 3

1-1003391138213741363

1312121212

7 267 3?7 4)38 08 12

0291508988

11 ‘7?11-021207222

12-36

5 95 135 215 275 33

1337335833101332132-I

1111111010

8 248 4ff8 490 39 15

8786858483

1251II 55512’SO12’5f413’09

5 795 455 515 5?6 3

331613(08130032921284

10 9 2830 9 4210 9 5))0 18 100 10 21

8281803975

132113351333313’671351

6 96 166 226 296 35

15761268126112531248

0 10 380 tO 528 11 78 11 228 II 1?

7777767574

13136141114’26J-5’4014’35

0 426 456 557 17 8

c’S“-.59-.

~0,50) —

~

1414714.15153

1616717I 7,7173

1871831919720

20720-2521122~

22-2152372424.5

25253202072?

2772828~23)297

310

04

05’

63

yards.41004200430044004500

46004700480041s005000

51005200530004005500

56005700080059006000

61006200620064006500

60006700680069007000

71007200730074007500

76507700750075008000

81008200830084008500

86008700680085000000

91000200030094005500

9600Sf 300980051900

10000

50 per cent,ofrsund should fall In

4

21

yards. yards. yard277 P23 l’38279 1’20 133528’S I’S? 155228’S 1’30 1-00258 1’13 166

292 3’36 1’?4295 1’40 18229’S 1-43 100301 14? 108304 150 206

30’S P54 2’14111 I’OS 2332315 1-62 2’30318 1’66 2’3532’Z 170 2’46

326 I’71 2’54330 177 2’623n’4 180 27033’S 184 27834-2 1-88 2’86

3-I’6 190 2’S)15’O I’S) 30535-4 201 31635’S 205 328363 2’S) 3’40

366 ‘213 3132aPI z’ii 3-6437’6 2’2l 3’7738’O 220 30138-4 220 4’S)

388 231 4’2233,1 2’38 4,38396 2’42 45440’l 2’46 4-7040’? 2-51 4’86

- 412 2-25 5.041’? 21)9 5’2422 2611 5.442-7 2’66 $643’S P70 S’S

43’7 2554 6’O44.3 2’78 C’S448 212 6’445’! 286 6’64513 250 6’S

465 295 70470 000 7’S47’6 305 7’4482 I’ll 7648’S 317 7,8

49’3 323 8049-8 3-00 8-3.504 3.37 8-1510 3.44 ~-951’S) 352 9’Z

522 361 9,552’S 3’70 9’853’3 379 10-10:(’9 3’80 10’454’S 4’OO 10’?

0

.2

~‘.5

5.

secofldo.~Snc1nes,5’SO 19’os5.75 18-81P5)1 1862607 18’4n6’23 18’SO

6’4O 1800656 17’81673 17’62689 17487’06 l?’25

722 1707739 16897’S) 16’71772 16537’89 1636

8’06 16208’2n 1005841 15508’55 i5’758’?fS 1560’.

394 15479’lS IS’34930 15’22 -0’49 15’lo0’68 1459

P08 14’SS10’07 1478 -JO’S? l-1~8-1046 14’S)-.11’CG 14’4S

1085 14’3811’03’, l4’29-11’24 14’2O~11-44 14’11~11’63 1402

1183 13’9312’03 13’8412-23 137612,43 13-6712-64 13’SO

1284 13’SO1305 131213-26 1335313’47 132513’68 Il’lfJ

13’S) 130514’12 12’S)14’3I 12’9114’56 12’821479 1214

1501 1265I5’24 12-5715’47 12491570 12411593 12-73

I6’I? 12251641 1255111666 120616’Dl 1l’1’91?’16 11’9n

-97

RANGETAStE for 9’2.inch 13.L. Guns,Marks IX andX—conUnned.

The proportionalresistanceto penetrationof wrougllt.iron, compoundor mild steel,andllarveyedarmour, maybe taken roughly159 1: 1* :2.

A 92-inch common alnell, -with a velocity of about2,000 f,~,, inlay be expectedtoperforateaboutG inchesof llnrveyodarmour,if struckdirect,orabout 5 incItestot 30’ tothe normal.

Under similar circumstances,a 9’2-inch armour-piercingshell may be o~pectedtoperforateabout9 inchesand7 inches liars-eyedarmour,andit would probablyperforate9 inchesof compoundor mild steelif struckdirectorat anangleof 30 to thenormal,

(9389)

(3 5 mInutes’a~ ~ C elevationor~ ~ deffeettonalters.2 ~ -0 (3 point of Impact0. 5 —______

~ ~ ‘~ 5,

‘6 ~ ‘6 , ~‘

~ -~ 1~’ ~“’~ 04 5”,1~

~,

~to)

‘° ~

.~‘0 ,~

,,cl, .

.5 .5A~

~(3.4,,

, 50~-

~-~kto~

50 per cent, ofroundsshouldfallln

~ .0 .1

~ ~21 ~

.2

.0~

‘6.~t—

.2i~

~“.5(3is

°

~5.

f-a-12381231122012171210

12031196118911821175

116811611154114?1140

3134112711211114

- 1108

I— 1101e 1095> 10885.... 10.82c. 1075

Ci: ian1063

~ 1037— 1051

1045152—“i 1039~ 1033

102710211010

10101004599lf’_f :1088

yards,S8877

77

77

66666

666.0S

IS5555

5SSI55

S4444

44444

11 1212 812 2312 3812 13

13 9II 2413 4013 5514 11

14 2614 4214 58IS 17,IS 31

45 4816 416 21Ill 3716 54

Il 1117 2857 4513) 018 20

18 3918 5519 1319 3119 49

20 726 2520 4321 12119

21 3821 5622 1522 3222 52

yards.7372727171

7069686766

6564636261

605958585?

575059

53

51504948

48474?4640

4948444444

yards.14’6914’8414’5815 ‘1315’27

15’4215 ‘5015 ‘7115’SS16 ‘00

16-141629164316’SS16’72

16 ‘8?17 ‘01I1.I617 ‘3017 ‘45

17’S17’?417’88IS ‘031IS’17

18’3218 -40‘Pot18 ‘751810

19 ‘0419 ‘191P3319’4819-02

19’??19’9120’0620 ‘2020 ‘35

0

77777

1421283542

yards.1010010200103001040010500

77888

49503

1018

1060010700108001090011000

88888

253341491?

1110011200113001140011000

99999

614233140

11600(17C0118001150012000

99

tO1010

49587

10215

1210012200123001240012500

1010101111

1541Ifs5

15

126001270012(300121)0013000

1111111112

2.53)0465?

8

13100152601330Q1340013000

nz42123213

19304152

3

1060013700138001390014000

yards.05-055056-2So’s57,3

58’O58.659’S59’S60’3

310’S61’S

62 ‘86:1 -4

64-064’665’Z65’366-5

67’i67’768,36i5’O69’O

705570’S71’S?2’O72’8

73.373’s74,575’l75.7

70’417 ‘177 ‘778’479’O

yas-ds.4’lO4 ‘224.344‘404’SS

4’704’834’0?P12IS’S?

5’425-085’?65‘92plo

P276’456 ‘646 ‘837 ‘00

7 ‘237 ‘427 ‘627 ‘838’OS

8 ‘208‘508’749’OfJ

15 ‘25

9’509.75

10’OO1O’SS10’SS

IO’8211’lo11 ‘4011 ‘7012’OO

yards,11-011.111’6Il’S12-1

12’?10’l13’S10’S14’a

145515’IIS’S159I6’I

16’?17’l17551791855

18’?195519,519.920.3

20,721 ‘021’S211322’3

22-723’l23’S23’924’3

‘24’?25’l25’525’S28’a

seconds.17 ‘4117’6017 ‘9!181018551

18’6718’9319 ‘1919’4519 ‘72

315-9920 ‘2020’5420‘8221 ‘10

21.3921 ‘6821 ‘9822’2822558

22 ‘8823 ‘1823 ‘4823’7824’OS

24 ‘392-1‘6925’S)21 ‘312562

2.5’9420-2626’SS2613127’24

27‘5727 00282428 ‘5528’92

Incheø,11’82I1’7411 ‘6011-0811’SO

1i’4211’3411 ‘2?11’1911’lZ

15’oS10 ‘1581091b’s!10’77

10’701033310 ‘5610’4910’42

10 ‘31510’S)10 ‘211O’15I0’OS

10’029,9591399-82P78

P699’O9 ‘569,5°9 ‘43

9.379-309’S’9179 ‘11

a

98

RANGE TABLU~for 9’2-inch liii, Guns, Marks IX and X.- - (~CompositeChas-ge,) - - -

- - Basedon Practiceof 30,7,00,

- - 40185

- - - 15229

40185(Minute 49,756,III (a),) 0552

f’weight, 777 lb. -

gravimetric densfty, 1067 -0260 rruzzlevelocity, 2106 f,s. -Charge, 1 747 lb.cordite,size44

Lmtture,I and Natureofmounting,barbette,Mai’kllI.L3 lb. cordite, size 3~.

mature, cast steel, poitntecl com~ lump, 73 minutes,negative.- l’rojec’ soonshell,Mark II.

~weig1it, 380 lb.tile,

.~.5~

—

04~m1~~~

‘i_~,

:0

‘

~

.

~4

,.,!~_

‘~‘3’~

3

-°

‘~~~

‘

,~

~

5no5~,~

~-

,~

21

‘

~

~

0

io

f,s. yards. ° ‘ yards, yards. ° / yards, yards. yards.yards.scconds

2174 1432 0 4 142 0-14 0 Il 100 ~ 0’142153 714 0 8 140 0-29 0 14 200 ~ ... ....,, 0292131 477 0 12 138 043 0 18 300 1 .,,.,,.,. 0’432110 358 0 16 136 0’S) 0 22 400 11 .,,,,.,.. 01382088 286 020 134 072 0 26 500 17 ,,.,..,, O’73

2067 229 0 25 132 087 0 00 600 2 210 0’35 0’l O’SS2016 107 029 130 101 0 05 700 2 214 0’3? 0’! 1032025 169 031 128 11)0 0 38 800 27 21’S 040 0’l 1’lS2002 151 0 38 126 I’ll 0 42 900 37 22’3 042 01 1’33lOSS 133 043 124 145 0 46 1000 33 228 045 0-1 I’48

1500 122 047 122 160 0 50 1100 4 23’2 0’4? 0’l 1’631046 110 0 52 121 174 0 54 1200 47 23’7 050 0-1 1’781927 100 0 57 120 189 0 58 1300 47 24’l 052 0-2 1-931908 02 1 2 119 2-03 1 2 1400 5 24’s 0’S) 0’S 2091890 87 1 6 118 2’IS 1 1 1500 54 250 0’S? 01 2334

3872 81 1 11 117 2’32 1 10 1600 6 25’5 0-60 03 2’4O1855 75 1 16 116 2’4? 1 14 1700 07 259 0-63 e’4 2561838 71 1 21 115 2-61 1 18 1800 67 26-4 0’S) 0’4 2’721821 66 1 26 114 276 1 22 1900 77 26’8 0’69 0-5 3581805 63 1 31 113 291 1 26 2000 74 27.3 0-72 0’S 3’S)

1789 59 1 30 112 3’OS 1 30 2100 8 27’? 0’76 06 3201773 56 1 41 Ill 3-20 - 1 34 2200 - 87 282 080 0-0 337175? 54 1 46 110 3,314 1 38 2300 87 287 084 0’? 15331742 51 1 52 109 3.49 1 42 2400 07 29’S 0’ss 0’S 3,70172? 49 1 57 lOS 3-63 1 46 2500 57 29,7 0-92 0’O 3-86

1118 46 2 3 107 1S’78 I 51 2600 10 302 O’56 S’S 41331690 44 2 9 108 3’92 1 55 2700 154 30’? l’On p0 4201685 42 2 It, 105 40? 2 0 2800 11 31’S 1’04 1-2 4-3?1871 40 221 10-I 421 2 4 2900 117 31’? 1’OS 1’a 4541607 39 227 103 4’S) 2 9 3000 117 32’S l’lS I’4 4’?!

99

RANGE TABLE for 9’24nch B,ri. Gun.Marks 1X and X—conto’nued.

0

.~‘45’bSC(3aS‘463

ml

:i~cm

C~’~0)bt

8

~~~0””44’,

4?.5o~‘~‘6500C

“4

5 minutes’elevationor

dellectionalterspoInt ofimpact.

5,t~0

~

i0

e ‘~

L!t

v.~

~

~

‘.— 1)77~- (3,~-‘~~“,-2

05p~6

77‘34’~t~5b,.5°~.

~

50 per cent, of

roundsshould fall in

1~~~~

‘ .2 4

fe

±~-~±~~_±_

‘~e~

‘6so

2 332 392 452 522 59

363 133 213 280 38

3 443 5240494 17

4 264 354 444 5353

5 1:)5 235 33S 435 53

606 156 506 276 48

6 597 117 207 347 46

7 58898 215 038 45

8 579 109 539 369 49

10 310 1710 3110 4511 0

111511 3011 4512 112 17

12 3312 4913 633 2213 39

36-131630161616031589

15761563155015371524

15111499148614741461

14491436142114121400

13881376136413531341

13301319130812971287

12761266125612461236

122?1218120932001192

11841176116811611154

1147114011331128111~9

11121106110))109-I1088

10821076107010641059

yards.

3736343332

3129282?26

2524242322

2221201919

18151?1716

1615151414

1313131212

1231In1511

10101099

95)988

8S87

777

6

yards.

102lot1009998

9?94959!93

9251908988

87868.58483

82SI807978

7?76757473

7271706968

6665646:3

61(IS626161

6060595958

OSS?5?5056

SO55545453

yards,

4’Sl4-664-804 ‘9!509

S’235385’SS50?581

5’966116 ‘256 ‘40654

6’696’c3(1 ‘987-137’S?

7 ‘42-I ‘567 ‘717 ‘83P00

8-148 ‘298-438 ‘588 -73

8’S?9019-169-309.45

9609.749‘89

1003I0’IS

103210-4610-6010751081~

11-04ln’19113411.4811-60

II’??11 ‘9212-0712-221236

120112-65128032-9413-09

2 142 192 242 292 32

2 392 44‘2 502 5531

363 123 I?3 233 28

‘4 343 403 463 S23 58

444 104 164 224 ‘28

4 3-14 404 474 53450

575 145 215 285 35

5 425 4ts5 5?646 12

6 206 286 366 446 52

70787 167 247 35

7 417 507’ 58878 16

8 255 348 448 5393

yards.

31003200330034003500

36005700380039004000

41004200430044004500

46004700480049000000

5100520053005400S500

56005700580059006000

61006200631)064006500

66006700680069007000

71007200710074007500

76007300780079008000

81008200830084008500

86038700880/)89009000

1412-i137133414

1471515716167

171741818419

15720‘20721217

22223231237‘247

20 -254‘26267274

2317

207

yards.

32’S33.434-034-6135’S

35 ‘836,437’O137 ‘618’Z

38’s39 ‘440’O40-6413

42-042’?43.444144-9

45-646.447’!47.9456

49.4SO’S51 ‘0SI’S52’8

53-754-655’S56.-i573

58-359 ‘260261 ‘2622

63164’465’S66’?GO’S

69-070-0271-472611-8

7S’O76’377’678-9SO’S

81 ‘683084’451-S87’S

yards.

I ‘161’201 ‘241 ‘2331 ‘33

1 ‘381 ‘4.~31.481 ‘531 ‘58

1 ‘631 ‘681 ‘731 ‘781 ‘83

1 ‘881 ‘931 ‘902’042-10

2152-212 ‘262-322-17

2’432.492’552-61267

2’73‘2802862-932-09

3 ‘063’lS31543-IS3.32

1’383.453513-583 ‘64

3 ‘713.773’8-33-903-97

4014114’184254’32

4,394’464,534 ‘004’68

yards.

1 ‘S1’O1’?1 ‘81 ‘9

2’O

2’S

2

2’62’S3-0323 ‘4

363’S4 ‘04’S4,4

4 ‘64’S5’o5 ‘25-4

5-65.96’S6 ‘56 ‘8

717 .47 ‘88’n8’S

889-39.9

10’O10-4

10’SII’Sl1’o12’!12-6

13 ‘113-014’214-815’4

16016617’S17’S184

19019’620’n21’O21’?

seconds,

4 ‘88SOSS -225’40S’S8

5 ‘765.940126’S)6’49

66868?7 ‘067-267 ‘46

7 ‘667’868-078’218 ‘48

8698’OO9’ll9-3139-54

9 ‘7695)8

102010421065

1088Il ‘11II ‘34II ‘58118!

120512-2912-SI12.7713-02

10’2613511:1-75140014-24

14’493 4,7434.99l5’S415’49

15 ‘7416-0016251)0-SI1676

17-OS17’S)17 ‘54171018-07

o2(9389)

100

RANGE TABLE for 9’2-inch B.L. Gun,Mat-ks IX andX—continucd.

t.3C

.5‘6I-toC‘6-~

~-

2 ~ -

S.2,~

e~~~,..0~

sobS~~~

~T1

-4(3~~0

,_0

3

:!~

5 mInutes’elevationor

deflectionoilerspoint of Impact.

-5,~~3s~

~ -~-~--~-~-

‘~05

~~~

p~~

±_

‘~ 1)(3~’,1) ~.os4o,~

‘4~1)0.‘3~,o~~~

~i_

50 percent,ofrounds

shouldfall in

,‘ .0 ‘

~~ ~ ,~

-~- 63 63

.1‘ge“~‘~0

,~

tf.s. yards. ° ‘ yards. yards. a / y ards, yards, yards yards. seconds.

1011 6 13 56 53 13’24 9 12 9100 8S’6 4’75 22’4 18’341038 6 14 13 52 1338 9 22 9210 900 483 231 18611012 6 14 30 7,2 I3’53 9 :12 9300 91.4 4’Sl 2:l’8 18891034? 6 14 48 51 1367 9 42 9100 92’S 499 246 191?1032 6 15 6 51 13’Sl 9 52 9500 94’Z 50? 254 19’45

1027 6 15 24 50 1396 10 2 9600 95’? 5’lS 263 19-741022 0 15 42 50 1411 10 12 9700 97’S 5’23 27’I 20031018 5 16 0 49 1426 10 22 9800 95’S 531 250 20’321013 5 16 15 49 14’40 10 32 9900 1003 539 28’S 20’Gl1009 5 1637 48 1455 10 42 10000 101’S 547 29’S 2091

100-1 5 18 54 48 1469 10 52 10100 103’S 555 30’S 21211000 S 17 14 47 14’84 11 3 10200 105’l 564 320 2151

996 5 1? 33 47 14’S) 11 13 10300 106’? 573 330 2181992 5 I? 02 46 35’l3 11 24 10400 I04’3 5’SZ 34’I 2212588 5 IS 11 46 152? 11 35 10500 103’S S’Sl 35,1 S2’43

955 5 15 30 45 15’42 11 46 10690 ill’S 603 36-2 22’74982 4 IS 49 45 1556 It 57 10700 1131 6’II 37’S 2305979 4 tO 9 44 15’?! 12 S 10800 114’7 6’21 38’3 23’36976 4 19 28 41 1515 12 19 10900 1163 6-31 39’4 23,671774 4 19 48 43 11-00 12 31 11000 1170 6’41 4055 2399

972 4 20 8 43 1614 12 42 11100 1195 611 41-6 2431970 4 2028 42 1629 12 54 11200 12I’l 6-61 42’7 24-63968 4 29 48 42 16-43 II 5 11300 122-? 6-71 43’S 2495966 4 21 1) 41 16’SS 13 17 11400 124-3 6’S! 450 25-28961 4 21 21) 41 1672 13 29 11500 125-9 691 461 25,60

962 4 2! 50 40 16-S7 13 41 11600 127’S 701 47’3 2515900 4 22 10 40 1701 13 53 11700 1291 7’ll 48’S 2626953) 4 22 31 39 1716 14 5 11800 130’? 72! 49’? 2659956 4 22 51 39 1730 14 15 11500 132’3 7’31 509 269295-3 3 23 15 39 17.4S 14 27 12000 1339 741 521 2750

101

RANGE TABLE for 9’2-inch B,L. Gun, Mark IX (Full Charge).

Ba:edon Practiceof 11 and13.7.98, and6.12.08.

40,153

8778

Mznntee 45,700, 46,518 III (4).

(‘weight, 100lb.810

Charge,.ç gravirnetrocdensity, —~--~--~-. Muzzlevelocity, 2,601f,s.

nature,cordite,size41-. Nature of Mounting, barbette,Mark IV.

~nature, common shell, pointed, Jump + 23 minutes.Projectile, ~ Mark II.

~, weight, 379 lb. Correctedfor gun on samelevel astarget.

~ .~ (3~ 50 perci’nt of rounds

.5 ‘13~ -~ alters poInt of ~ shouldfall In‘6 0 Impact, ,~ ____________________ C5’ ?0 -_________ , oca .0be ,o_t-C a-? 1”.5 b-bc (3 a-” ~‘s 2 -‘ ,-5 ‘~ 0) .5 4 ‘6 s~F

“07 ~ ~ ~ ~

63 63105 63 31 ~f,s. yards. a / yards. yards. ° ‘ yards. yards, yards. yards, sees, inches.

2570 2833 0 3 250 0’14 0 0 100 4 1O’8 0’lO 0’OS O’12 02’))2S-12 1)30 1, 6 168 0-29 0 3 200 4 20-0 0-13 009 0,24 II’S25138 633 0 9 164 043 0 6 1100 1 20’Ol 0111 O’li 0’S) Sl’O2185 477 0 12 162 058 0 0 400 17 20’O3 0-IS 014 0--IS 80,12457 081 0 15 1103 O’72 0 11 500 i4 20’S) O’21 0’lS (‘60 ‘20’))

2431 337 0 18 358 0-8? 0 13 60) 3 20’OS 02-5 010 072 29’S2401 285 0 21 35)3 1-01 0 16 700 2 5O’57 028 0’18 084 29’))237)3 245 0 ‘44 154 1.36 0 39 80(3 2. 20-08 o-:It 0550 063; 28’S2:150 257 0 2? 152 P31 0 21 1)00 2 20’S) ~ ~ ~ 28’42325 178 031 110 1’45 0 24 1000 13 21’l 0’.35 024 1’22 27’S

2300 10)) 004 148 1’S) 0 27 1100 84 21’S 0’40 0’25 134 27”)2274 145 0 38 1411 1.74 0 30 1200 37 21.4 043 021 141 2)362250 1311 0 41 144 1’S) 0 53 5:ooo 4 5)113 0-47 O’2l) 1)3)) 2/3552220 122 0 45 143 2013 0 3)1 1-100 44 21.7 05)) 0’31 1,73 25’S2203 110 048 141 2’lS 0 119 0500 47 218 0-54 0’S) 1,633 2S’4

2180 10)3 0 52 130 232 0 42 1600 57 220 0’S? 0.3? 200 21’O215? 100 0 55 184 2’4? 0 45 1700 54 22’2 060) 031) 2,14 2462135 93 0 59 13? 261 0 48 1800 57 22’4 0’S) 0’41 2339 2I’29115 OS 1 2 315 27)3 0 51 11(00 6° 22’S 0’S) O’413 2’4t 23’S2005 83 1 0 1133 21)1 0 54 2000 4 2213 0’S) 0’45 2-55 211’S

2075 80 1 9 131 3’05 0 57 2100 67 22’8 031 0’S’) 2’S) 23’22055 7? 1 13 129 3330 1 1 2200 74 230 071 0752 2’S-’! 22-82031)3 75 1 1)3 128 331 1 4 2:300 74 2333 0-74 0755 2’1)8 22’S2017 12 1 20 327 I5’413 1 7 2-100 8 234 O’77 0’58 013 22’21998 68 1 2-0 12,5 1463 1 11 2500 84 2313 080 0’61 325 211

3580 335 1 28 124 3’7S 1 15 2600 87 23’S 0811 0114 84-7 21.01063 61 1 82 123 31)2 1 18 2700 1) 2-l’O O’SS 0’S) .3’SS 21’S1945 60 1 010 323 417 5 21 2800 ~4 24-3 0’85 071 873 21’))1025 58 1 40 152 4’Sl 1 25 2900 97 24’S 090 O’74 8’SS 20’?1911 55 1 44 021 4,30 1 28 8050 104 24’S 012 0’?S 403 20’S

1806 53 1 48 120 4,51 1 31 3100 107 23’O 0’S-I 0’81 4’lS 20’21881 50 1 63 119 4’S) 1 35 3200 11 2555 01? 01)5 4’S) 20’))1865 48 1 S7 118 480 1 89 3300 117 25’S 1’OO 0,8!) 410 lO’T1850 47 2 2 11? 41-1 1 43 3-400 117 21’? 103 093 4’S) 30.51835 45 2 II 116 509 1 44 3300 12 24’)) loS 098 41)2 19,3

102

HANGIS TAIJI.E for ~‘2-il1ch1B.L. GIlls, Mark IX (Full Cliai’go)—continued.

50 per cent, of roundsshouldfall in

85 -0

F’,~ Ic)8’ 321’) 85c-I ‘463 63

4 ~

yards, yards,

26’2 1’OS26’S 11026’S 1,13270 I’S?27’3 120

27’? 12323’s 126282 1’2728’S 3’3025’8 1’33

.5

beC

C

63

f’s’

1820180337021778176-i

17901737172117121601)

1681111721)1381)1111/ill

161816)811)9111811568

151115123 3201517iSO!

14921180116?14351111

1132111911)3713031381

1373136211(37115-i))11(3))

3 1)20115005529812481279

12~()12)0123))12121233

1223121:31203113)-I1181

3 17)31167III!)115011-12

0-tiC

~ E,~~.0

o O-~

~

.~(3

I

5 inlnutes’eleva-tlon ordeflectionalterspoint of

- Impact-,

~ui~

-

yards, a yards. yards,

43-II

2 112 16

015114

523538

1 501 5-3

403837

2 212 262 31

11:)112111

S’525’675’Sl

1 5342 22 6

317133:13531

2 342 412 462 512 56

111110110108108

5’S)6’ll0,256 ‘40654

2 132 132 172 212 23

8028282?2))

5 23 83 143 203 24

lOS10?107106105

6,696,8361(8713727

2 292 :132 372 412 4-5

2)252-12:123

3 32.3 3133 453 523 10

101103102101100

7427’567 ‘71785800

2 41)2 512 588 23 7

2722212020

4 64 1:34 214 294 8?

9098979~31)3

8’54833’,)8’43858S’73

,‘! 113 1)33 203 213 29

2020193817

4 -IS4 SiS 25 115 20

3)3- 1)2

3)11)089

8879019’169’3))0 ‘45

3 0-13 393 433 483 5-1

1716163615

5 295 31)5 4(55 596 10

S-S87868381

9609‘?-l989

1003l0’18

4 04 s4 104 154 20

1315151514

13 213 82/1 4:16 .557 7

8382818078

10-3210.1)1106010751080

4 264 :124 374 434 49

1413111111

7 1137 817 417 ~78 10

73)77747574

11-1911-3-1il-is1108

5 16 85 145 20

IIi~111010

S 238 878 519 59 20

7372717170

11’771192120712’2212-36

5 275 335 395 465 54

1010301)9

0 35D 50

10 3310 2210 38

706065670’?

3275112651250129-1)111’09

(3 13) 86 15

13 22(3 29

98Ss8

10 54ii 1111 28ii 4512 2

6)3(151311)431.3

13 ‘2-413,381:1-7,8136?1381

6 363 41Ii 516 507 7

,0~~~cad0’32.S-~‘;:~

‘i; ~231Icc/J

yu-ds,

3600 1243700 133800 13~:390)) 13-4000 - 14~

41)))) 1-374200 1543)8) 1044100 164500 13)4

4600 j)3a-475’~5 174800 174900 38°500)) 38~

5100 195200 197550)) 205410) 2075500 21

5600 2145700 225800 2245900 2.36000 2:11

6100 216200 2146320 25610)) 25l6500 20)

0600 2076780 2?(3500 277((1)00 287000 284

7100 297200 2947300 307-1007-500

76007700780079008000

8101)52))))830081008500

500087008800834)09000

9100l’2t)0501))09-10053100

‘CbeV31

yards,

1 ‘021 ‘071 ‘121171’22

1 ‘201 -311 ‘351 ‘411’52

1 ‘581 ‘651 ‘731 ‘811 ‘90

2’OO2082182’202.39

2502-6227121)02’S!)

3’lO3-233.3?3-52368

3’Sa4’S’)4104.344’SO

4704 ‘895’OS5285.4?

5’6535’906’1433’386‘62

138157’lS7,-OS7’71800

8 ‘30S ‘62S’O-l9279’S)

9.9510 ‘3010-6811’0511’4-1

0.

C.’-

.2 ~fin

(35

Inches-10’l18’S18618’418-2

180171)37’G17’4372

17010’S10’616’4182

10115’!)15’T1-S’S15’3

15215’O14’!)14’81411

14’S14’-!34214’S140

13813’?13111,3’S134

13’S13’2i3’O12’!)32 S

12’?12-012512412.3

12212’S12011’!)11’S

11.7ill)il’s11.4113

Il ‘211 ‘113’l11’O11’O

‘C

be

63

0

0)

SH

sees.

4-986115 ‘305,4)35-62

5’s?5,936’lO

6’4-1

6 ‘606’??01)47 ‘107’2?

7 ‘457-6:37-817 ‘10)8 ‘17

83)35 ‘54872S ‘is)9-00

9 ‘2?5l’401)5’6508-5

10’OS

10261047106510883109

118011 ‘51i1’7211-9412’S)

12’S!)12’)).’!12-86131013 ‘33

30’S)13 ‘8.31-1 1714’3214 ‘57

1482iS ‘0115’3215’S?1582

16 ‘0716 ‘8210’Ss16’S-I1710

29 ‘229’S213’S30’l30’-!

20831-131’S31’S322

326

311’433’S342

3-l6315035,485’S3611

8)3’637’S3713118-038’4

88’S38’330’640’i40’7

41’241’T42242’?432

43.744-343’S45445’!)

46’S47-047045248’S

49,340’S50’45105151

1 ‘361 ‘-101 ‘431’-!?1 ‘50

1 ‘5-!1 ‘581 ‘621 ‘1)61 70

1 ‘741 ‘771 ‘801 ‘841 1)8

1 ‘921 ‘952012052’09

2-132172 ‘212 ‘25230

2’342882’422462’51

2552-50;2632662,7))

2742’7S2822’S)2’S’)

2953’))))3058’lj3’l?

0233’303 ‘373’4-13’52

-‘103

RANGE TABLE for 9’2-inch B.L. Gun,Mark IX (Full Cliarge)—costh’nued.

The proportional resistanceto penetration of wrought-iron, compound or mild steel, andIfarveycd armour,may be taken roughly as 1 : 1~: 2,

A W2-inch common shell, with a velocity of about 2,000 4.9,, lflU~ be expectedto perforateabout6 inchesof llarveyedarnmour,if struckdirect; or about5 inchesat30° to time norms!,

Under similar circumstances,a 92-inch armoemr.piercingshell may be expectedto perforateabout9 inchesand7 inchesllarveyed mmrmour, and it woulit probably perforate 9 inches of com-poundor mild steelarmourif struckdirector at anangle of 30°to thenormal,

—C~°

-~ -.~-;~‘~6 Q3~~be.5.5 ~

ca

63 H

V

‘32

00

be

5 rnlnutes’eleva. -

tlon or deflectionalters point of

Impact, - -

~ I111 1

yards, yards. - a /

33.3 131)0 7 14(12 1411 7 2231 i-I’S) 711060 141)0 7 3851) , 14’SS 7 40

68 14’S) 7 6557 II’S! S 430 14-08 S 1255 IS’S) 8 2155 152? 830

5-I 1S’42 8 385.3 15’SO 848r~s 1571 S 5~S52 15’8)) 9 751 10’S) 9 16

50 1615 92049 1629 9 3648 1)3’4.3 9 4547 16’55 9 5545~ i0’78 10 6

45 1(585 10 1544 - 17’02 1021044 - 1717 108644 - 1731 10474~ 171)6 1008

43 17’S) 11 943 17’75 11 2042 i7’90 Ii 8142 38-01 11 4341. IS’S) 11 65

40 1S’33 12 639 18’47 12 1838 181)2 12 0138 15’7e, 12 443? 1810 12 57

37 11505 1:3 1036 19’20 13 2836 19,04 13 3035 10.48 13 .5035 1963 14 4

35 1978 14 1534 19’S) 14 3234 20-07 14 46

f-s.

313-31l23111811101102

10960089108210753069

1063101?11)61301151039

103-11021)102110181014

100910)/I1000995990

9843535197?9739)10)

0)3-50)3195?0539-49

9449-139-’19036933

9291)24919

yards. 5 /

8 12 20-7 1231

7 12 507 13 147 13 32

7 13 507 04 97 14 27I) 11 4)36 15 5

II 15 2143 115 4433 16 45 1(3 245 III 45

6 17 (‘c5 17 275 17 48

— 5 18 10•5 1832

)5~ 18 545 19 1335 19 394 20 24 20 25

4 20 484 21 124 21 304 22 14 22 210

4 22~14 23 164 2-3 423 24 83 -243!

3 21 08 25273 25 548 2)3 213 20 48

3 27 163 ‘ 2? 4-13 25 12

- -“~ 50 per cent, of rounds

- ~ - shouldfall 1mm

a- 231

~4 II~ 4 ~ .2P ~ ‘(3 ‘(3e

~ ‘6-~ -~ ~ 31

yards. yards, yards. yards.

9)300 -.,.52’23 ‘311 11810700 ‘S 3.70 12 ‘2:1I)))O0 .,, 52’S - 3.79 12631)900 ,,,53’Il 8815 1305

10000 .,, 54’S 41)0 13-15

10100 ... 5551410 13’S?10200 ,., 150 4332 14’2STI10300 2 4’S-I 14’?’)10100 .,. 50’S 4’40 1151210500 ,.. 5151 4’5S 15’SS

10600 .., 58’O 4’70 10’S)307)))) ... OS-li 4.8~3 1)3’4310800 ,,. 50’2 4,97 ‘!‘l’8?101)00 .. - 50’S S’I2 17-8211000 ... 603 527 17’??

11100 .,, 60’S 542 18’2411200 .,, 61’S SM 18-7011300 .,, 62’2 S’?4 1933711400 ,, 62’S IS ‘92 1913311500 .,, 3)3-4 6’iO 2013

11600 - ... 134’O 6’2? 20’IiO10700 ,., 6433 6-45 21”)?11800 ... 662 6,114 21 ‘5711900 ,., 658 0’53 22-0712000 .,, 6)3’S 703 22’S?

12100 ,,. (I?’i 723 23’OS12200 ,, 671 7,42 239?12300 .,, 653 7112 240312-100 ... 69-0 7’S.’! 2-I ‘13)312500 ,,. 339)3 SOS 25’09

32600 ,,, 70’2 8’S) 2560i2700 .,. 70’S 850 26’1312800 ,,. 71 ‘S 8,74 26’6512900 ... 120 900 27-1813000 .., 7251 025 27’70

13100 .., 73’3 950 2S’2013200 -.. 73,8 !d’7o 28801331)0 .., 74.5 10-00 292?

751 1025 2)1’S’)13500 ... 75’? lOIS 303?

13600 ... 76.4 1082 300013700 ... 77’I li’12 814513800 ... 77’? 1140 3200

‘C

63C

0S

84

arcs.

173717-6!17-90IS’i718’45

157319’OO11328195719’S?

201720’!))207520’S)21 ‘34

21 -0021 ‘183222122502200

28‘2123’522:3,832-I’ll21 ‘44

2-f’?S25-0025’S?25-6926”)))

2)13126 ‘61120’S)27’2727’S!)

2? ‘9128 ‘2328’S)2~‘8720’lS

295029’S!30’20

0.

C’—.7132

(355/

inches,

10’!)1)1810’?10-510’4

10.4101510’2lO’2lO’l

10’))105)5)’!)II--?;

1) ‘8

1) ‘79 ‘051’;)1)5’S

IS’S9,408III9’2

9’292919.;)9’))

8’!)8’!)S’S8-s8’?

8’?8’?5’O8 ‘0S’S

6-S8.-I8’4

104

RANGE TABLE for 9’2-inch B,L, Gun, Murk IX(three-quartercharge).

Basedon Practiceof 5,12,98.

4918

i~ffMinute 46,518 III.

gravimetricdensity,108’O Muzzle velocity, 2127 f.s.Charge, ,{wei~ht~75 lb. I -

nature,cordite,size44, Natureof mountingbarbette,MarkIV.

nature,commonshell, felled, Jump,+ 3 minutes,Projectile,{ ~ ~ lb Corrected for gun on same levelastarget,

5 mInutes’ lopercent,of~ S , elevationor 0 ‘32*’ roummds

~ ~‘ g~’~~ deflectionalters .~S ~ I should fall In‘5 ~ ~ poInt of Impact. -~ .~

I- #i ~beI ‘ ~ o ,~.931 ‘0 , — . d/~J 4 ~

0 ~ -4 ~~ ~‘~I-~0 ~ (3 (3 ~ ‘5bea ..~ -,63 63 63 o,5-4 — ~~__ ____I’~ ~

I.s. yards. a? yards. ~ am yards, yards. yards.yards. sees,

2111 955 0 4 126 O’14 0 0 100 ~ 0’S)2000 520 0 9 125 0 ‘2!) 0 4 200 ~ ,,,,,.,., 0282048 7338 0 13 124 043 0 8 300 11 ,.. ....,. 01)420-110 273 0 18 123 055 0 12 400 1~ 0’S)2020 229 0 22 122 072 0 16 500 2 ,,, - 0’71

2000 191 027 121 0’S? 020 600 2k 9 0’S 0’OS 0’861080 1)33 0 31 120 1’Ol 0 2-1 70)) 21 10 0’S 0’lO 10118101 1-13 0 3)1 119 118 0 28 800 3 11 0.6 011 11)319-IS 12? 0 -11 118 1 ‘31 0 32 900 31 11 00 0 ‘14 1 ‘311930 115 0 -18 117 145 0 38 1000 4 12 0-0 O’i7 1’47

1911 103 OSI 110 1’60 040 1100 45 32 0’? 020 1-3)01898 5(5 0 56 015 1 ‘74 0 44 1200 4~ 13 0’7 0 ‘22 1 ‘501875 87 1 1 153 I’S!) 0 48 1300 5 13 0’? 0‘21 1’97186? 80 1 6 112 203 0 52 1400 5~ 14 0’S 029 2’141841 75 111 110 215 056 1500 6 14 0’S 032 231

1825 70 1 17 109 2’32 1 0 3600 65 15 0’S 0’36 2’481809 65 1 22 107 2’4? 1 4 1700 ~1 10 0’!) 0’IO 2’S)1703 61 1 28 10)3 2531 1 8 1800 7 17 011 0.44 2821777 59 1 33 10-1 27)3 1 12 1900 ~1 18 0’!) 050 2981701 55 1 3!) 102 2-01 1 16 2000 8 19 0’9 0’S? 315

1746 51 1 45 100 30-S 1 20 2100 8~ 19 10 063 3’321731 4S 1 61 5(9 320 1 25 2-400 81 20 1 ‘0 0’S) 3500716 45 1 57 08 3 ‘3-I 1 30 2500 tQ 2! 1 ‘1 0’75 3671702 43 2 4 00 319 1 35 240)) I~l 21 11 0’81 3851)38? 41 2 11 05 3,63 1 40 2500 10 22 1’3 085 4’02

1)172 40 2 18 1(3 -3,78 1 46 2600 I0} 23 12 095 411)1335-3 88 2 25 92 392 1 51 2760 11 23 1’2 1-0)2 4.871645 3? 2 32 91 4-0? 1 57 2800 115 2-1 1 ‘2 110 4’S-S13331 3-~ 2 39 00 4-21 2 2 21)00 1l~ 24 1 ‘3 1 ‘17 473161? 311 2 47 89 4’30 2 S 3000 12k 25 13 125 4-92

1603 01 2 54 87 451 2 13 3100 121 25 1 ‘1 1 ‘28 5‘111500 31 :s 2 86 4’S) 2 18 3200 13k 26 1 ‘4 1 ‘30 S‘:303578 130 .3 9 85 4’60 2 23 3300 101 27 31) 1’45 6’4S1563 28 .1 17 83 49-1 2 28 j 3100 145 28 1,4 1330 53)81950 27 325 82 509 233 3500 141 28 14 1’?O 5’S)

19117 27 j 13 35 J 81 5 ‘25 2 .3!) 3600 155 29 1 ‘S 1 ‘80 6’OS152-I I 20 3 41! 80 5,88 2 41 3700 ~ 2!) 1 ‘5 1 ‘90 0 ‘2-51011 25 3 50 78 5 62 233 j 3800 16k 30 15 20 6’4-I149!) 25 .358 7? j 56? 268 j 3900 i0~ 30 i’ll I 21 6,64148? 24 4 7 76 i 5’Si 3 2 4000 17~ 31 10 1 2’2 685

105

RANGE TABLE for 9’2-inoh B.L. Gun,Mark IX (~Charge)—conthwed.

1,—~

‘5be‘S

j

—-~5~

0 051~~~

,~a-m032

~

5 mInutes’elevatIonor

deflectlonalterspointof impact.

.5,~ ,

Ji~1Sa-~

I I

-~~e ‘32 “

~,~V

~‘20’~,s.s31~

h~

50 per cent, of

soundsshouldfall In

.

1~H•

~~

IOs. yards, ° / yards. yards, ‘ yards. yards. yards.~yards, sees.

1475 23 4 16 75 5’S) 3 8 4100 171 81 1-0 23 7’S)1464 22 4 25 7-1 011 3 15 4200 185 32 1’)) 2’-i 7 ‘2)11435 21 4 3-1 7’S 55’25 13 20 4301) 181 :12 1.7 2’S 74014-42 20 4 4-I 73 040 3 20 4-100 lIll :13 1 ‘7 26 13 ‘6?1431 20 4 51 72 6’S-I 3 32 4500 20 33 1’? 2-8 7’SS

1420 19 5 4 71 33’69 3 38 4)300 201 84 1’7 3’O 8’S)140!) IS 5 14 71 88.3 3 44 4700 21 131 1’S 81 8-2))1398 18 521 70 13-OS :351 4800 211 36 1’S 32 5’S)3587 1? 5 .3-1 00 7’S) 3 57 406)0 221 35 1’S 3’4 8’721378 17 S 45 6!) 727 4 3 5000 221 38 I’S 3-0 511-I

1365 18 5 55 68 7‘42 4 !) 5100 231 0315 1’!) 8’S 9’S)1:366 15 0 6 68 756 4 16 5200 24 37 1’!) 40 9’371313 15 8 17 0? 7’71 4 28 5300 211 3? 1’!) 4’I 11581:332 15 8 28 67 7’S) 4 30 6-00 25 118 1 ‘1) 4 ‘2 5)601321 34 6 40 60 8’OO 4 30 5300 251 38 20 4,3 3o’o3

1310 11 6 52 60 8’lI 4 415 5600 2)35 3!) 2’O 4,4 10’2!121(7 1,3 7 4 65 8’2!) 4 40 5700 2131 39 20 4’6 10401283 33 7 17 65 543 450 5800 271 81) 2-0 4,14 106-31274 13 7 254 6-5 858 5 2 5900 23 5!) 25) 5-2 101)01264 12 7 42 64 8153 5 9 6000 28} 40 2’S 5’-! 11’13

125.3 32 755 63 887 510 6100 20)5 40 2’l 56 II’S)1245 11 8 8 63 9-01. 5 24 (3200 21)5 40 21 5’? 1145)123.3 11 S 21 62 ft’10 5 31 33300 .,. 40 21 S’S 11821223 11 8 35 62 il’30 5 3!) 6-100 ... 41 2’2 511 12 ‘051213 10 5 48 (51 9’15 5 47 0500 ,.. 41 2’2 6-2 1233

1203 10 9 2 01 0’6o S 5S 6600 .,, 41 22 6-5 12’S.s119), 10 153)3 530 9’?I 0 3 6700 ... 41 2’S 8.8 12’S.’!3185 10 9110 60 9,89 (.1 10 6800 .,. 41 2’2 7’2 10053170 9 51 41 55 1003 6 18 0000 .. 41 251 7.5 13381168 9 9 59 5!) 5015 0 2? 7000 ,.. 41 2’S 7,8 13’SO

1160 0 101-1 53 10112 635 7100 ... 41 23 8’l 13851152 8 102!) 58 1040 (143 7200 .., 42 2’S 8’4 14-I))11-11 S 1040 5? 1060 653. 781)0 ,., 42 2’3 SO) 14351137 8 11 0 5? iO’75 0 59 7400 ,,, 42 2’-! 8’!) 1-059)11130 8 1110 50 1089 1 7 7500 ... 42 2’l 91 14’S))

112-I 8 Ii 32 55 1159-1 716 71300 .,. 42 2’-! 13-4 15-331137 8 11 48 55 11’I!) 725 7700 ... 42 2’4 0-6 16-803110 S 12 5 51 113! 7 3-! 7800 ,,, 43 2’4 1)9 iS06l1103 7 12 22 54 111)6 7 42 31)00 ,,. 42 2’S 107 15-951090 7 12 40 5-1 11613 7 55 8000 ... 42 2’S 10’S 1017

108!) 7 12 57 55 11 ‘7? S 0 8100 ,.. 42 2’S 106 16.431083 7 13 35 S3 Ii ‘02 8 9 8200 ,,, 42 2’S 10’? 113701076 7 133.3 53 1207 S 18 8300 .,. 41 2’S 10’6 16-11?1070 7 1351 52 3222 828 8400 ,,, 41 2’S 10’S 17-211065 7 14 5 52 12-30 8 37 8100 ... 41 2’O 1~’4 17’S)

1058 7 14 28 52 12’Sl S 46 8600 ,,, 41 28 10-3 17,781033 8 14 47 51 2265 8 55 87)))) ,,, 41 259 50’2 IS’S)1018 8 IS 0 51 12’SO 1) 5 8800 ... 40 20 102 18-311047 II IS 25 50 121)-I 9 iS 8900 ,,, 40 251 1O’4 18-621034 0 15 45 50 1300 9 25 5000 .,. 41) 2s3 1011 )5’9o

3030 8 333 5 50 13’24 935 0100 ,,, 40 27 10-S 19’181025 6 50 25 50 13158 0 45 9200 ,,, 8!) 2’? 11 ‘/3 35)4)31020 5 10 46 49 13’S.’! 9 55 1)300 ,,, 3!) 215 11’2 19741015 5 17 0 4!) 18-0? 10 6 0400 ,,, 39 2’? 114 20-0:51010 5 I? 2? 48 1381 10 17 0600 .,. 38 2’? Il’S 201)3

1005 S 17 49 48 13’S) 1028 0600 .~ 58 2’? 116 2003100)) 6 15 11 48 14’S) 10 11!) 51700 ,,. 18 2’? 11 7 209191(5 5 13 33 47 14 ‘2)3 10 50 1)500 .,. 37 27 15 ‘5) 21 ‘2))5(90 5 iS 55 47 14 ‘-iO 11 0 0500 ,,. 3? 2‘8 ii’!) 21’S!)1385 5 19 16 47 14’55 1111 10000 ,,, 30 2’S 120 21,78

106

RANGE TA3ILE for O’2-inels B.L. Guii, Mark IX (~Oliarge)—conthsued.

— 5 S iniitsstes’ 50 perccnt. of~ 5 . elevationor o5* ioiinmls

~ .~o~ ~ deflectionalters -~S ahoulcl fall in~ ~ p0/IL of impact. ‘~ ,i~

of S —.-— -‘ -~.~ ~-_~__-____-__-_~-—be

~f ‘!~‘~ ‘0-— “~ ‘II’ ‘ ~ ‘ .0 ‘.5 ~5S ‘~/ V 553715

be ~ ~ ~ ~ .~e ~

63 e~’°-~ 63 I’) 63 53 ~.3 ~ 15

Os. yards, 0 / ysrda. yards. / yards. yards. yards.yards. sees,

1561 5 18 41 48 1460 11 23 10100 06 2’S i2’O 22’OO977 4 20 -1 46 14’84 11 35 10200 35 2’S 12’3 22351172 -I 20 2? 45 ]4’OS 11 47 10800 15 2’S 12—0 2269968 4 20 50 45 1513 12 0 104)10 35 2’8 12’!) 2200961 4 21 13 4-1 i5’2? 12 13 10100 3-1 2’S 132 2318

53(30 4 21 3? 43 1542 12 20 10600 31 2’S 13’S 23’46055 4 22 1 42 1550 12 39 10700 33 2’S 13’S 23’745(50 4 22 25 41 IS’71 12 52 10800 33 2’!) i4’l 2103956 4 22 4)3 40 15 ‘80 13 5 10900 32 2’!) 14’-! 24 ‘819-12 3 23 14 39 2600 13 10 11000 32 2’!) 14’? 2-i’S)

5)58 3 23 30 138 1615 13 :32 iiioo 31 2’!) 15-0 2-1 ‘895(34 8 25 4 37 16 ‘29 13 4S 11215) 31 2’!) 152 25 ‘181)29 8 21 29 3)1 16,13 13 59 113’JO 11 2’!) 15’S 25’-!?923 8 24 55 81 i)i’55 14 13 13400 30 2’9 15,7 25’7S920 13 25 21 35 16’71 14 2)1 11500 30 2’)) 15’!) 20’04

016 11 25 47 11-I 1083 14 40 11600 29 2’!) 16’l 2)3-311/10 8 28 13 3-I 17-02 14 5:5 11700 21) 3-0 103 2648905 3 ,,. 311 1?’17 15 0 11800 28 80 16’S 2692

107 -

RANGE TABLE for 9’2-inch B,L. Guns, Marks IX anti X.(Composite,Ii’ull Charge.)

- - Basedon Practiceof 16~7,00,

401859259

- 40185Minnie 49,687I.

flweighit, 103 lb.

I , ~8’8Charge, .~gravinietrie density, ~3j~f’ Muzzle velocity, 26-53 f.s,

L~te{9b.it0ze4~rnbdl Nature of mounting,barbetto,Mark 1V.r nature, cast steel,pointed,comrn Jump + 25 minutes.

Projectile,-~ mon shell, Mark II.I weight, 380 lb.

5 5 minutes’ ~ ‘~ 50 per cent, of5 13 elovattonor .531 a 1)0/flits

‘C - ,5,~C deSectionalters ,,, a ,, , should fall In ag poInt of impact, 37 _________________ , 2 ~

~ 5 __________ ~be ~ .5 ,., ~ be cooo ,~“C C ‘IC.,O ‘0-— ,~c51)~ ‘5 .‘-‘8 580 , 4 . ,,,,0 ‘3.00 a .0 — 0

~ ~ ~ ~ ~ ~ ~ ~ ~ -~ .~ ~63 so “13 51 lao be 53 Ia -1 ~ 63 1-’ i~

f.a. yards. a yards. yards. ‘ yards, yards. yards. yards. seconds ins,2616 2864 0 3 232 0’S) 0 1 100 0’lI 32’SG2592 1146 0 5 230 029 0 4 ‘200 5 ,,,,,,,.. 0’23 32’lZ2568 761 0 7 228 0 ‘413 .0 6 300 5 0’31 31 ‘692544 572 0 10 2231 0’SS 0 9 400 5 ,.. ,,..., 0’47 31’262520 485 0 12 224 0152 0 11 500 1 .. ...,,, 0’S) ~0’84

2406 182 0 15 222 087 0 14 3300 15 20’S 0’ZS 0’IS 0’?I 30-432472 318 0 18 220 1’Ol 0 16 700 1~ 20-7 0’25 0’16 0’83 30-03‘2448 274 021 218 1’lli 0 19 800 2 20’S 0’31- O’l? 0’S) 29’632424 230 0 24 216 i’ll 0 21 000 25 209 0519 O’IS 0’S? 29232-1015 212 0 27 214 1’45 0 24 1000 25 21’l 0515 019 I’19 2S83

2377 191 010 212 i’60 0 26 1100 3 21’3 0’40 0’20 1’31 2S’432155 170 0 33 210 3,74 0 79 1200 35 Zl’4 0’43 e’22 1’43 25032332 159 036 208 1’S) 0 31 1300 35 21’s 0’4? 0’24 1’S) 27-682310 149 0 40 206 2 ‘0-3 0 04 1400 4 21,7 0’SO 0 ‘20 1’6S 27 ‘232288 134 0 43 204 Z’iS 0 36 1500 45 21’S 0’54 0’25 I’S) 26-84

2267 125 046 202 2512 0 19 1600 45 22’O 0.57 0510 193 26-462240 117 0 49 200 2’47 0 41 1700 S 22’2 0’19 0512 2596 ‘20-02222S 109 0 53 198 2’Oi 0 44 1800 55 22’4 0’S! 034 2°i9 25’702205 102 0 56 196 2156 0 47 1900 55 22’S 0’63 0596 2’32 2S’352181 9? 0 59 1114 2’91 0 50 2000 55 2253 0’S!) 0’lS 2’46 25’OO

2165 92 1 2 192 3-05 0 153 2100 65 22’S 0,59 0’40 2 ‘60 24’652146 88 1 5 190 3’20 0 56 2200 65 23’O 071 0’S) 2’74 24-302127 84 1 8 188 3’34 0 59 2300 65 20’2 0’74 045 ‘2’88 73’S)2108 79 1 12 186 31)9 1 2 2400 75 23,4 0’77 C’S! 3 ‘02 23-632090 75 I 16 184 3-63 1 4 2500 75 2136 050 055 3’S) 23511

2072 71 1 20 182 3’?S 1 5 2600 5 23’S 0593 059 3’30 23’002055 68 1 24 350 3,92 1 11 2700 85 24,0 0’SS 0’S) 3’~ 22’S!)2038 65 1 28 178 4’07 1 13 2800 8~ 24’3 01)8 0535 3’S) 22’352031 62 1 32 176 4’21 1 17 2900 9 24’S 0 90 0’?3 3.73 22-092004 59 1 16 17-0 4’S) 1 21 3000 95 24’8 0’92 0155 3,88 2l’80

1988 57 1 40 172 4’Sl 1 24 1100 10 ‘2.551 0594 081 4’03 21-511972 55 1 44 170 465 1 28 3200 10.5 2551 0.97 0’S) 4 ‘18 21 ‘221856 53 1 48 168 4’S) 1 :31 1350 105 25’S 100 0,92 4’33 20’S?1940 51 1 52 166 494 1 38 3400 11 25’? 103 0’9S 449 201521925 49 1 56 164 5-09 1 38 0600 115 260 105 1’Ol 468 2047

1910 48 2 0 162 5’23 1 42 3000 12 20’Z i-OS 105 4’80 20221595 46 2 4 160 5’3S 1 45 5700 1’25 28’S 1’lO 1’I4 495 ItS’S?1880 46 2 5 35S 5’S) 1 49 1800 121 26’s i’13 1510 51! 1is’?31865 43 2 13 156 S’67 1 53 0900 135 27’O 1’17 1’26 827 19’SO ‘1810 41 2 18 154 5’S! 1 56 4060 131 21’3 1’S) 1’32 5.43 iS’27

108

RANGE TABLE for 02-inch B.L. Guns, Marks IX andX—continued,

5 5 minutca’ ~ ~ 50 per cent. of51 13 elevatIon or Sf rounds

0 ,21~,c deflectIon alters ~, , should fall in~ point oI inipact, .5 3715

~ S - . 0,,~___~ -~ -~

~3 .Sa$ç74 4

‘~ -~ - ~ ‘~ ~ ~ ~ ~ ‘~ ~

.537 t~ ~ - - /‘~ ~ —~-- —f-— ~.

Is yards 0 I yards, yards, yards. yards. yards.yards.seconds.Inches.3836 40 ‘ 9 23 152 5’S!) 1 59 4100 14 27’7 1 ‘23 1’3S 559 190.51822 39 2 28 150 6’ll 2 3 4200 145 27’S 1 ‘28 145 5’75 IS’S-S1809 37 2 33 148 31’25 2 6 4300 1413 28’2 P27 I’S) S’Sl 18021796 36 2 38 146 0’40 2 30 4400 115 28’S 130 1’59 607 18-413783 25 2 43 144 654 2 13 4500 1513 28’S 1’33 I’S!) 023 IS’20

1770 34 2 49 142 6’S!) 2 17 4600 16 29’Z I’S) 1’74 6’40 18’OO1757 33 2 54 140 5383 2 2! 4700 165 29’S 1’40 1’S) 6’S!) 17811744 32 0 0 138 698 2 25 4800 17 29’S 1’43 1’DO 6’73 17-6-21731 31 3 15 136 7’i3 2 29 4900 175 30’i 1’47 1’SS 6-89 17-4:31718 30 3 Ii 114 7’27 2 31 .5000 175 )30’4 1510 2’OS 7’S) i7’25

1705 29 3 1? 312 71)2 2 37 1)100 185 00’S 1594 214 7 ‘22 17(71692 28 3 23 130 716 2 41 1200 185 31’i 1’58 2’22 7’39 161)91679 27 029 128 7’?! 2 45 0300 18 31’S 062 230 755 16711667 26 3 35 12!) 7 ‘85 2 49 5400 195 II’S 160 2’BS 7 ‘72 16.533655 26 34! 124 800 2 53 1100 20 322 1-70 2’46 7’89 16-16

3643 25 3 48 122 8.14 2 57 560C 205 12’S 1’?4 2514 8596 16 ‘201632 24 3 55 120 8’29 .3 1 570(1 205 31’O 177 2’62 8 ‘23 i6’C-S1621 23 4 2 118 8’41 3 S 5800 215 33’S 180 2’70 841 155101610 23 4 9 116 8’55 3 9 56(0 215 33’S 1594 2’7S 8’SS 15-751600 22 4 16 114 8’73 3 13 6000 225 342 1 ‘88 286 8’7!) 1560

1190 21 4 23 112 8’S? 3 1? 6100 225 34’S 1 ‘92 205 8594 15’471180 21 4 30 111 901 3 22 6200 235 35~ l’s!) 3’05 912 15’341570 20 4 :37 110 9’!!) 3 26 6300 234 15,4 2’Ol 3’lG 9,30 15’221960 20 4 45 109 9’30 3 31 6400 24 35’S 2’OS 3’ZS 9,49 15’lO1550 19 4 51 195 9.45 3 15 6100 245 36’3 2’09 3’40 908 11-09

1540 19 5 1 107 9’S) 3 40 6600 25 36.6 2’ll 3’52 9’SS 14-881530 IS 5 9 105 9’74 3 44 6700 255 37,5 2’17 351 1007 14781520 18 5 18 105 989 3 49 6800 26 376 2-21 3,77 10-27 140811510 17 527 104 10’04 3 114 0900 265 380 2’25 a’tlI 1046 14-981501 17 5 36 103 !0’lS 3 59 7000 27 38’4 2’30 4’S!) 1066 1448

1491 17 5 45 103 1032 4 4 7100 275 38,8 2’34 4’22 10’85 i4’3S1482 1)1 5 14 101 10’46 4 5 7200 28 39.3 2’3S 4-38 !i’OS 14’291472 10 0 3 100 10530 4 14 7300 285 30’S 2’42 4’54 il’24 i4’IO145:5 15 6 13 99 10’7S 4 19 7400 2!) 40’! 2535 4-70 11’44 145311654 15 6 23 98 1089 4 24 7550 295 40’7 2’Sl 4’S!) IS’63 14-02

1440 14 6 33 97 11‘06 4 80 7600 30 41 ‘2 2’S) !l’O 11,83 13.031486 14 6 43 96 1!’19 4 05 7700 ,,, 41’? 2519 P2 12-03 135941427 14 614 95 iI’34 4 4! ?800 ,,, 42’2 2’S) P4 !Z’23 13’?!)1418 13 7 4 9-5 li’4S 4 4? 7900 .,, 42’? 2’!)!) .5-6 1’2’43 133)73403 13 715 93 ii’63 4 53 8000 ,,, 432 2’?O S’S 12-64 Ia’S9

1400 13 7 26 97 11’77 4 09 8100 ,,, 437 2:74 6-0 12’S4 10501391 12 7 0? 91 11512 5 5 8200 ,,, 44’3 2158 6’Z l3’OS 13-421382 12 7 48 90 12’O? 5 II 8300 .,. 44’S 21)2 64 13’26 11~33:174 32 0 0 89 I2’22 5 17 8400 ,., 45’ 2’SS 6’!) 11’4? 13251361 12 8 12 88 12’S) 5 23 8500 ,.. 45’9 2’DO 6.8 13-68 - 13 ‘16

1357 11 8 24 87 12’51 5 29 8600 ,,, 46’S 295 753 1390 13’081348 II 8 46 86 12’S) 5 35 8700 ,,, 47’O 1’OO 7’Z 14’lZ 12’S!)1:310 II 849 83 l2’80 5 41 8800 ,,, 4753 305 7’4 1414 12-9113:12 10 9 3 54 12-94 S 4? 8500 ,,, 4551 311 7’S 14’56 i2’1)21524 10 9 35 81 1309 5 53 9000 ,,, 48’S 317 7-8 i4’79 12)4

1316 10 9 28 82 13-24 15 59 ~ioo ,,, 49’3 3’23 80 1501 12-051308 10 9 42 81 13’3S 6 6 9200 ,,, 49’S 330 83 1524 12-571300 10 9 56 80 13-53 6 12 9300 .,. 50’4 I’S? S’S 1547 lZ’491292 9 10 10 715 13’S? 6 39 9400 ,., 51’O 3’44 S’S 15’70 12’-ll1284 9 10 24 78 13’S! 0 25 9500 ,,, 51’!) 3’lZ 92 15’93 12’33

1276 9 10 08 77 13’S!) 6 32 9600 ,.. 52’2 3531 9’S 16’17 12 251268 9 10 52 77 14’Il 5 38 9700 ..- 52-S 370 9’S 16’41 12’S)

% 1261 5 - II 7 70 1426 6 45 5800 ,,, 533 1159 I0’l SO’S) 12081253 8 1122 75 14533 6 51 5900 ,., 03,9 389 lO’4 16-91 II’S!)1216 8 Ii 8? 74 IllS 6 58 10000 ,.. 54’S 4 00 10.7 II’S) 11’sl

_10~

RANGE TABLE for 9’2-iIlch B,Ij. Guns,Mark-s IX andX—conUnued.

Tile proportionalresistanceto penetration of wrouglmt’iron, compoundor mild steelanti Ilnrveycil armour,may betakenroughlyas 1 1~ : 2,

A 0’2’inch common shell, with a velocity of about2,000 f.s., may be cxpectcdtoperforateabout6 inches of Ilarveyedarmour,if struckdirect,or about6 inchesat 300 tothe normal,

Undersimilar circumstances,a 9’2-inch armoln’.piercingshell may be expectedtoperforateabout9 inchesand7 incheslfarveyedarmour, anti it would probablyperforate9 inchesof compoundormild steelif struckdirectorat an angleof 300 to thenormal.

I.’

SI.beC

~a

-~

‘Sr.o0034

,~,2

1C

:s~~37so

5 minutes’elevatIonor

deflectionalters~ polntot!tnpact,‘~~ i_.~ ~~

~1

‘~° ~ S~ ~-‘-o 63

f’~.2 0 a

c ~.~

~~‘aZ~~~f0c’~

~

~ ~

63 .“~

50 per cent, ofrounds

should fall In3.

.0 ‘O-~ f~

,

~ ,~ ‘5

~ ~ ‘~ ~

.3 51 63 so 5~

f-s.Ills113112241-2171210

1203II!)!)1)5011821175

1168‘lot316411471140

11141127lId!11141108

11011)-OS100310821075

10131)10134l0~.7105110-15

10391013102710211015

1010994592993988

yards,S887~1

7

7

60666

13S0015

55S55

55S

54444

44444

11 5212 512 2312 0812 53

13 913 2413 401:3 5514 11

14 2614 411-5 5815 1515 31

15 4511) 416 2116 37I!) 54

1? 1117 28I? 4518 5iS 20

IS 3818 0519 3319 311)5 48

20 720 2520 4321 121 19

21 0521 53122 1522 3222 52

yards,7072727171

7069580766

636463625!

33009585557

5706SI545-it

,52St504948

4847474!)4!)

4645444444

yards.14-0914’8-l1-4’SS10 ‘1315 ‘21

15’42iS’s!)15 ‘71IS’S?,1P00

16 ‘1416’S)16’4316-5816’?Z

1651717’!)17 ‘160?’SO17’45

17 ‘5017-7417 ‘8918 ‘031S’tI

i8’3.i18 ‘4!)IS’S)15’??,i8’OO

I5’04103 ‘1919 ‘3019’4519’SZ

i9’7719’Sl20’OG202020’35

747 ii7 157 217 12

7 397 467 53So88

8 158 238 818 098 47

8 56949 139 219 30

9 19‘3 489 57

10 610 15

10 2510 3010 4510 0511 5

11 15Ii 2!)11 3!)11 4111 58

12 912 2012 8112 4212 53

yards.1010010200103001040010500

1060010760108003090011000

1110011200110001140011500

1160011700118003100012000

1210012-20012300124001’lSOO

1260012700128001250013000

1010011200530001340013500

1160010700138001000014000

yards.55’O55-656’256’S57,3

0865S’659 ‘2S9’S60 ‘3

60 ‘861’S532’262’S63.4

6-5’O64’!)65’Z65’SGO’S

67-I67’?053335’O69’!)

70’270 ‘871-S72072’!)

70’173.574.5?5’I75.7

76’477’l77,778’479’O

yards.4 ‘104’S)4,444’464’S)

4‘704-S_I4,975’12P27

5’425’sS5.7!)

6’!O

6’276’456 ‘64P537 -03

7 ‘23P427 ‘627-83805

8’268’SO8 ‘749’OO15-ZS

9’SO9.75

10-0010’lS10 ‘55

J0’8211’iO1t’401! ‘7012’OO

yards.11 ‘0IL’SII’S11 ‘8!23

11’?13113’Si3’914’S

14’?15’l15’SIS’S16’S

16’?17’I17 ‘517’S18’3

15’7133 ‘1IS’S19’!)20’S

20’?2!’!21 ‘S21 ‘922’S

22’?23’!23523-924’3

24’?2S‘125’S25’S26’3

seconds17 ‘4117 ‘336Il-StIS ‘16IS ‘11

1P67189319’i919’4519 ‘72

19’SS202020’5420’S)21’lO

21 ‘0921 ‘6821’SS22 ‘282258

22’S)211523 ‘4823’7824’S)

24’S)24’5925’O025’S129532

25’942!)’2626 ‘5826’Sl27’24

275727’S)2851428’S)28 ‘92

incheS,1152II’lSLI’S)11’SS11’SO

11’4311 ‘3411 ‘2?11 ‘1911’12

110510’S)JO’S!10’s 410.77

10150106310’S)lO’491042

10 -350051810’S)JO’S)10’08

10029,959’SS9 -82P76

969P6:19-109 ‘509.43

9,379 -309-219’!?9’ll

110

RANGE TABLE for 02-inch B,L, Guns,Marks IX andX(1~ltrcc-quarLercompositecharge).

Basedon Practiceof 30.7.00,40185

~iRnute49,756III.

(weight-, 774 lb.

106’7Charge, .j,~ravimetriedensity,~~—‘ Muzzlevelocity,2196 f.s.

74-4 lb. cordite, size- nature~ 44, and Naturoofmountiitg,barbctlc,MarkIV.

L3

lb. cordite,size3~.

commoIl shell, Mark II.l’toJcctlk {nature, cast steel, pointed, Jum + 3 minutes,weight, 380 lb. -

2 5 miautes’ oo”,S SO per cent, of

eleyalionor ~ roun)!sdeflectionalters S shouldfall InS ~ 901111 of impact, ,~~ -— o0, _____________

S c~ S s~ ,S’~’~50 ~,t,0 GIbE”-3 ‘5 . H . ‘~-91 ‘ ‘ ‘0~ a - .0 ~ 0

‘0 .0-~ ‘~ “0 0 st~r

0~ be0 II 63 0 I, 4 1 N.. f~, ~ ,, ‘11 ~0 0’~ 0 0 .1” .1 I GO

63 so ‘~ ~ -~ ‘~ 63 5’ —1 n 63

fe. yards. 0 yards. yards, ° ‘ yaods. yards. yards. yards. seconds,2174 1432 0 4 142 O’14 0 1 100 4 ,,. ,,,,, O’142103 714 0 S 140 0’29 0 4 200 52131 47? 0 12 138 0’43 0 S ‘400 1 ::: ::: ::: 0’lS0’432110 558 0 16 15!) 058 0 12 400 1~ ,,, 0’552088 286 0 20 134 072 0 16 500 17 .., ....,, 0’73

2007 229 0 25 112 0.87 0 20 600 2 21 ‘0 0518 0’l o’852046 19? 029 130 l’s! 0 24 700 2i’4 0-37 0’! 1-032025 169 0 34 128 1’16 0 28 800 21’S 0-40 O’I i’182002 15! 0 18 126 I’ll 0 32 900 22’S 0’S) 0’l 15131985 113 0 43 124 1,45 0 36 1000 4 22’S 0’45 0 ‘1 1’48

1965 122 0 47 122 1’fO 0 40 1100 4 23-2 041 O’I 1’631946 110 0 52 121 1.74 0 44 1200 4’ 23’? 0’S) 0’! 1’781927 100 0 57 120 189 0 48 1300 4 24’I 052 0’2 1-931908 92 I 2 119 2’03 0 52 1400 5 24’S 0-05 O’2 2’091890 57 1 6 118 2’S) 0 56 3500 54 25-0 0’S? 0’32’24

3872 81 1 Ii 117 212 1 0 1600 6 25-5 0’S) 0-3 2’401855 73 t 16 116 2’47 1 4 1700 531- 25’!) P63 0’4 2’SS1858 7! 1 21 115 2 6! 1 8 1800 6~ 26’4 0’S) 0-4 2152182! 3136 1 26 114 275 1 12 1900 75 26’S 069 0 5 3’881805 63 1 31 113 2’S! 1 15 2000 75 27’3 0152 0’S 3594

1789 .55 I 36 112 3’OS 1 20 2100 8 27’? 0’S) 0’6 P201773 50 1 II 111 3’20 i 24 2200 85 28’2 0’SO 0’S 3’3?1757 154 1 4!) 110 3’34 1 28 2315 85 28’7 084 0’) 3-531742 5! 1 52 105 349 1 32 2400 95 29’l 0 88 0’S 35303727 49 1 5? 105 3’63 1 36 2500 95 29’? 0’92 PD 3596

1713 46 2 3 107 3’78 1 41 2600 10 30’z o’o~ i~o 4’031659 44 2 9 106 392 1 41 2700 194 30’? 1 ‘00 1’l 4 ‘201685 42 2 15 105 4-07 1 50 1800 ii 3151 1-04 1’Z 4’S)1671 40 221 104 4’21 1 54 2900 114 3I’7 i’08 1’3 4’541657 39 2 27 103 4’36 1 119 3000 115 32-3 l’lZ 1’4 4’?i

1643 37 2 13 102 4’Sl 2 4 3100 125 52’S 1’I6 I’S 4181630 36 239 301 4’65 2 9 3200 125 I ~ i~z~i’~ S’OS1616 14 2 45 100 4 80 2 i4 3300 135 140 i’24 1’? P221603 33 2 52 99 4’94 2 115 1400 135 I 34’6 P28 I’S P401589 32 2 99 98 S-OS 2 24 3500 14 35’Z 1’33 1’!) U’S)

I — I

111

R~t~otTAnr~F7for 9’2.inch B.L. Guns,Marks IX andX—conUnued.

2 5 mlnute&t,, -~0 elevatIonor-~ .8, ~ ~.2 deflectionalters,2 ‘S c ~ poInt of Impact.5 00

~‘C ~25 0 ‘-‘3 ~

5~ ,~4 ~ 00 0 so 1

0 C ~,3 ~-6 ~ t~

~- 50 per cent, of.231 03 rounds

S ,, , should fall InG3 ~

.03

~, 000,8,,~ 4 ~ .2 ‘5

N ‘0,,,, ‘ .0

~ ~-S~.”’ ~ S~ 63

f’s-157615631550153?1524

14!!1495148311474I4!)I

14491436342414121400

33851376136413531341

13301315130812971287

12761266120612461206

12271218120912001192

11841176110831611154

11571140311311261119

111211061100109-51088

10821076307010661059

10533048104210371032

yards,3129282?26

2524242322

22212019is1815171716

1615151414

18is13

12

1211Ii1111

10101099

99988

S8S7

78

66666

363 533 213 283 38

8 443 8240494 17

4 264 13354 444 5353

5 135 235 135 435 53

646 156 2!)6 776 48

6 59it

7 247 46

7 5889S 2!8 335 45

8 9?9 109 239 369 49

10 310 1710 3110 4SI! 0

IllsII 3011 4512 1

1_it 17

12 3312 4913 613 2212 35

13 56141214 3014 45IS 6

yards,9?9!)550495

9291908988

8786815So83

828!807578

7776757473

71706968

(3766656463

026t6!

60605956SS

5557579656

55559454.53

5352525!51

yards.5’235-385‘525’675 ‘81

5’966’Il6 256406‘54

6-6!)6.836987’lS7’S)

7’427 ‘S67 ‘717 ‘568’OO

8’14P298‘435 ‘58873

85979‘01P1!)9’SO9 .45

9 ‘609,755’S)

133 ‘031018

10 ‘3210461060tO’??,10’S)

11 ‘0411’IS11’341I’4811-63

117711 ‘9212 ‘0712-2232’S!)

12 ‘SI12 ‘65128052’9413’03

132413 ‘381353136713-81

2 252 142 402 452 SI

2 5632373 133 18

3 243 303 363 423 48

3 5440464 124 18

4 244 104 174 434 50

4 .57S4S IiS 185 ‘25

5 325 395 475 5162

6 106 186 266 346 42

6 506 55707 147 23

7 357 407 487 5?86

8 158 24S 3!5 438 53

929 12‘3 229 329 42

yards,36003700380035004000

41004200430044004500

46004700480049005000

810052005300540011500

1560015700586056006000

6100(1200530001006500

66006700580009007000

71007200730074007100

76007700780079008000

51008200830084008500

86008700880085009000

91000200930094009500

1453515416165

171751818519

19420204‘21214

222242:123244

252552)3262?

2?2829295

yards. Iyards.35.8 13S36’4 1’4337’O 1’4837’!) I’5315’l 155

38’s 1’6339’4 3598400 173406 !‘7S4!’3 183

42’O I’SS42’? i’9341f’4 1’S)44’i 20444’S 2’lO

454 2 1546’s 2’2!47’i 22647’D 2’1248-!) 2-37

49’4 2’4150’Z 2-495t’O. 253,51’S 26152-S 2’G7

55-7 2’7354.6 2-505,5-S 2’S)55’4 293S7’3 2’S)

58’S P0!)59-2 31260’Z 3’!!)61’2 3-2502’2 3’32

63’S 33864’4 3 4565’S 3’S!06’7 3’SS67’S 3-64

69-0 3717002 3-7771’4 3’S)726 351073.8 13f’97

7559 4 0470,3 t’tl77.5 4’OS78’S 4-25802 4’S)

51’!) 4’9583’O 4’4684-4 4’S)55’S 453087-2 4-68

88 6 4-7590’O 4’039!’4 4’!)!02’S 4 99942 5-07

yards.2’O2’!2’22’S2’4

2 ‘62’SP03’Z3.4

3’!)3.54’O4-24.4

4’S4-S5’OP2P4

5’68 -90 ‘25’S6’S

7-17,4I’S8’l8 ‘S

S’S9-296

10’o10’4

10’S11-211’!)12’l12’!)

13’l13-614-214’S15’4

15’O16’S16’l16’Sis”

19’O19’S20 321 ‘0217

2242:1 ‘123 S24 Si25’4

econds.5-76S’946’120 ‘:to6’49

P656’877’S)7’l!)7’46

7’06I’S)8’O?8 -275’4S

8’698’S)9 110.339,54

9’769-98

10”20l0’SlIS’S)

10’8S11’ll113411-58Ii’s!

1259512’S)i2’5312’??1302

132613’SlIa’S)14 ‘00IS’S)

14’4514’?414’S!)IS’S)15’49

15-7416’OO16’S)16’SI16’76

17’S)172817-1417 8015’07

1834155118 ‘5919’l?13 ‘45

- 112

RAN6E TAbLE for 92-inch B.L, Gutis,Marks IX andX—contin~ueZ.

s~,~,sS~-:~~~

f.m..102?1022

3~ 0~. i~3‘S c -~

c~’~:~~u~3s-.

yards,631

.2gS

~~

~‘6

0

15 241542

5 mInuteselevationor

deflectIonalterspoint of Impact.

~—

~~

~~

yards, yards,50 13’!)!)00 14-11

‘

9 S210 2

~S’3 50 per cent, olrounds

should fall In‘— ‘—a

°‘o-o

,

~~ S ~

5’ 63

yards yards. yards, yards.9600 .,. 95’? S’lS 2!)’39700 .., 97’2 S’23 27’!

.2

.0

~

~.~

so

seconds.19’7420593

101810131003

100!100099?,9921-88

985982979976974

9729709358tIllS961

9029310555956994

555

95S55

S4444

44444

44441

16 016 IS657

IS 5117 54II 331? 52IS 11

183058 4919 919 2S19 -18

20 820 2820 482! 921 29

21 5022 1042 3122 5!23 lit

494948

4847474646

4545444643

43424’it4!41

4040393539

112614-401655

1469148-114’S)15’S)1527

l0’4215’5615’?!15’S)16(0

16’141629I6’43IS’SS1672

16’S?17-0117-16l7’8017’45

10 1210 2210 32

10 3210 53Ii 3II 14Il 25

I! 1331! 4?11 5812 912 2!

12 3212 4412 5553 713 15

13 3113 4313 5514 714 19

58009900

10000

101050200

1030010-10910100

1013001070010803100011000

1110011200311001140011500

1160015100118001190!)12000

...

.,,

...

,,,,.,

,..,,,,.,..,.,,,,,,,.,..

.,.

,.,,..,.,,..

,,.,,,,,,,.,,.,

08-S1003101’S

1035105’!106’?10531099

1l1’5113’!114’?116’3117’!)

135512!’!122-71243125’S

127’S125’si30’7132’3133’S

5315’~395’47

5’S)5645’7:f5-82591

6016-1162161556’4!

6516’6!!)‘7I6’S!6’Sl

7’Oi7’ll7 ‘217’3I7’41

2S’O28-929’S

30’S72’O33-03!’!35’!

36237’238-339440’S

41’S42’743-545046’l

47,348’S49’750552’!

20’aZ20’S!20’91

212121’S!218122122243

2215423052:13623’672399

24-31246324’9525’2S25’S)

25’DS25-231265926’9227-26

rfl~0

proportionalresistanceto penetrationof tvronght’iron, compoundor mildtIteei, andIlarveyedarmour, may be takenroughlyas1 : 11-1 2.

A. U’2-iuch common shell, with a velocity of about2,000f,s.,may beexpectedtoplrforate about 6 inches of IItu-ve,ved armour, If struck direct, orabout5 inchesat 300 to the normal.

Untler similar cirCllmStaflces, a0’2~Inelsarmour.piercingshell maybe expected -

to perforateabout9 inches and 7 inches llarveyedarmour,andit would probablyperforate 9 incItes of compoundor mild steelarmourif struckdirector at an angleof 30°to thenormal.

113

RA.NGI~ T~fl1~I~for 9’2.inoh B.L, Guns, Mtu’k~IX sstii X.(Compo8itoFull Charge,)

Dosedo~sPracticeof 16,7,00antI 30,5.01,73

4018S

‘~5~2 --‘~

.~finuIe,s43,0-11, 49,687 I, cod51,~44(a),

~weight, 103 lb.

I gravimetricdensity,~ Mu~rIovelocity, 21313 f.s,O’3b1 ICharge, i nature 00 lb. cordite, size41~ Natureof mounting,barbetto,M8rb V.

L and 4 lb., size3~.I nature,cast steel,pointed, corn- Jump, + 15 minutes.

Projectile, I mon shell, Mark II.

weight, 380 lb.

“-.

.~~..a~0

-~Sm73:~bt’~’

~~ :-~so

,~

iiOo

I

5 minutes’elevationor

deflectIon silerspoint of impact.

—~

E~12

.231 ~, 0

~

a.-,.9-~.’

1~U50 per tent, ol rounds

ou a n

~,~

I3.

0-S~..

IIyards, 0 I

2864 0 31146 0 5

767 0 7572 010485 012

382 015318 018274 0212.39 024212 027

151 030173 033159 036145 040134 043

1213 046Ii? 049109 053102 0069? 099

92 1 288 1 581 1 879 11275 116

75 12005 12465 12862 13299 136

57 14055 14453 14851 113249 356

48 2 046 2 444 2 943 21141 218

(9389)

I’S’

2619259!)257225492526

25022488245524322402

2386 -2366234223202298

2277225!)2233221.52195

21752156213?21182099

2081205320-1620292012

330953979396319481933

19391904189038761862

yards.

232230228226234

222220218216214

212210208206204

20220019819!)191

i~2190188186184

182180178176l?4

3721703681336164

302160158156154

ysrdm..

0’140’zo0’430080’?Z

0’S?i’d1 ‘161 ‘311 ‘45

I’S)1 ‘741 ‘89

2’032’lS

2122,472-612’762’!)!

3’OSP203.343,493’63

3’78P924 ‘074’214’S)

4’Sl4 ‘654’S)4,94S’09

P23P285’S)5’s?P81

01030!)OS0 11

0 140 1!)0 190 2!0 24

0 2!)0 290 320 350 37

0 400 420 450 480 51

0 114o ss10is10

191 121151181 22

1 251 291 321 365 39

3 431 461 501 533 57

yards.

100ZOO300400too

600700800900

1000

11001200130014001500

16001700180019002000

21002200230024002500

26002700280029003000

31003200330034003500

36003700080039004000

yards, yards.

20’S 0’2520’4 O’2820’8 0’3l20’S P352!’l 0’38

21-3 0’4021’4 0’4321’S 0’4721’? 0’SO21’S 0’54

22’O 0’S?22’2 0’5922’4 0’6122’S 0’6322’S 0’66

22’S 0’S)23’O 0’?!23’Z 0,7423’4 0’??23’!) 0’sO

23’S 05324’O 0’SS243 0’S)24-5 0’9024’s 052

25’O 0’94 -

25’2 0’!)?25’S 1-0025’? 1’0326’O 105

26’2 i-OS26’S 1’bO26’8 1’13270 1’1727’S 1’ZO

41

451155S5

666

S88995

1010101!115

12125121313

yards,

0’IS0’lO0‘1?0180’15

O ‘200-220’24O ‘260’ZS

0-300’32O’340’360-38

0’400’430’4S0’SI,0516

0’SS0’630’6S0’730-78

0’S)0’S)0’530 ‘981 -03

I ‘OS1 ‘141 ‘201 ‘263 ‘32

sees,

0’ll0230’3130’470’SS

0’?!0’Si0’9515971’15

1 ‘3!‘‘431 ‘951’~81 ‘80

1 ‘932 ‘0!)2’S)2’322’S)

2’S)2’74258P023’16

3 ‘13103,443’S9313P88

4’034’S)4.334,494’S)

4’804 ‘95P115’27P43

Ins.

32’S632’lZ31 ‘6931’S)30’SS

304330-0325’63292325 ‘53

28’4328’OS27’S-a23 ‘2326’S4

2!)’4626’OZ23 ‘13025’152-5 ‘00

24’6524’302:1’S)23’6323-31

23’6022-6922’S)22’0521 ‘50

21 ‘8!21 ‘2220’S?20’7220’41

20 ‘2219’S?19’?319’SO19’27

I!

114

RANGE TABLE for 9’2-inch B,L. Guns,Marks IX andX—continued,

~;-—

.&~1-

‘-~~

0C

~~

o.~’0:~~.

~-Cso~e

5

~

~b

5mInutes’elevation or

.2 deflectIonaltersC point of impact.0

,~-n ~ , oa-, — i,,a’ ,7 5n ,,~

anbS 5 S-S

~l ~-.2 ui

.2 ~

S.2 ~ -a.~

,,-50.-a

~

,i o,’n.~o .‘m3.’2~sa 5-a5~

1~

,50 per cent, of rounds

shouldfall In .2 c.0 2.~ g-~

, ~ -—.0.04 .. a

t~ ~ ‘~ amc ~ -~ !).~ 63

yards, 0 yards.

4039373635

223228‘233238243

102150148116144

343:332

-‘1130

2492 541 03 5311

142140138136134

2528272!)2)1

3175733293353 41

132130128126124

2524232322

3483554 24 94!!)

322120118116li-I

2!21202019

42343043?44~5453

112111110109lOS

15IS181717

5 15 951852?53!)

107106105104303

171!)161515

5455646 3613623

10210!1009998

1414141313

6336436547 4715

9706959493

1312121732

7267371488 0812

0291908988

1111111010-

8248408499 39113

5?86858483

10 92810 94230 9589 10109 1024

8251807978

S 10359 10528 II 78 11228 11-87

II79209574

f-s.

184918.36182318113795

17871775176437523740

17.3017191708161)?1686

167!)1660165636-161637

162513510161016011592

1983167415653916154?

19381630152516133504

141361488148014721454

14561448144014321424

181?140014021:3941387

13791372136413~571349

1342133113281-5211814

yards, 0

5’S) 2 001! 2 462-5 12 76’40 2 116’54 214

6’69 2 186’83 2 226-98 2267’lb 2 307-27 231

7’42 2387’SS 2427’?i 24!)7’SS 2.508’O!) 2 51

8’14 2585155 3 28,43 3 68518 :3108’73 3 14

8’87 3 189’Ol 3230’S) 3279’S!) 3329’49 3 36

5’60 3455.74 3 459’S!) 3 50

10’03 3 551015 4 0

1O’12 4 510’46 4 1010-60 4 153077, 4 2010’89 425

31’04 431it’S) 4 361134 442il’48 44811’63 454

li’?7 S 051’S-it 5 612’!)? 5 1212’22 5181236 524

12111 53032’65 5 36IPSO 5 4212’04 5481309 5S4

1324 6 01318 6 713’33 6 0333-8? 62013-8! 626

i3’96 6 1314’!! 6 5914’26 6 4614’40 6 1214’bS - 059

yards.

41004200430044004500

46004700480049005000

510052006300114005500

96005700540059005000

6 10062006:95064006600

66006700680069007000

7105$200730074007500

76007700780079008000

81008200830084008500

86008700880086009000

910092009.50094009500

9600970098009900

10000

yards.

27’?27’!)28 ‘228’S28’S

29’229’S20-830’i30’4

10‘831’S3! ‘531 ‘S322

32’S33033,453’S34‘2

34’!)35035,435-836’a

36’!)37137038’O184

38’S39.339640’i40’?

41 ‘24! ‘742 ‘242’?43-2

43,744.344’S45’445.5

46’S47’O47’S48 ‘245,5

49.349 ‘850-451’O01’6

52’Z52853-363’SSI’S

1414434-1.5

1!)1651?17}175

18}1811919420

20420-2121-5224

221

2342-I244

252512626427

2742828529294

30

yards. yards. tors,

1’231’201’2?1301,33

1-381’411’52I’59i’d!)

5’S!)5’?S5-916’07!)‘23

1’361’401,431,471’SO

3’741821’90i’DS2’O!)

6406’S!)6’?56’897-0!)

1’S-a11581’GZl’s!)1’70

2’142’ZZ2’3021582-46

7’227’31)I’S)’,71527’89

1’741’771’BO1’S!1 ‘88

2’S)2’S)21502’782’S!)

S’068’25S’418588’?6

1’921’S!)2012’OS2’09

2’SS3’053163’2S3’40

PSIO’iZ91509,4)565

2’i32’172’2i2’252’30

3’523’S)3’??0’914’00

P8810’0710’2710’4610’S)

2’342’S)2’422’462’Sl

4’224384’544704’S!)

10’S511-OS11-2411-441163

2’SS259263P6!)2-70

5-0S’S5’45’!)5’S

li’8312’03122332’4312’S)

P742’78282‘2’862’S!)

6’O6’S6.4666’S

5259413051326i3’4?13’6S

2’Sl3003’OS3’ll3,17

?‘O7’27’47’!)7’S

13’OO14’lZ14’3414’S!)14’?!)

3233:103-313-443’S7

8’O8’S8’S8’S9’2

150!15’2435’471S’?O1593

13161 9-5P70 9’S3’19 10-i8,89 10.44’OO lO’7

16’lI16’41166610’oi!T’lS

ins.

IS’S)18 ‘8418’6218-411820

18’OO17-811? ‘6217’4317 ‘25

b7’071P8916’711653iP3O

16-2010’OSIS’S!)15’7515 ‘60

15’4715’:34bS’2215’bO1499

14-8814’7814’6814 ‘6814’48

14’3814-2914 -2014-1114’OZ

13-93138413-7613 ‘6713’59

13’SO11’421315313 ‘2553’l!)

13’OS32’9912’Sll2’8212-74

12’S)12’ST52,4912’4112’33

1P2512’S)12’OS15 ‘991111

115

RANGE TABLE for 9’2-incli B.L. Guns,Marks TX a-nd X—continued.

“5 Sminutes’elevationor 25 50 percent, of rounds

~ 30, so -“ , deflectionalters 0 , 0 0‘~ 2 E point of Imp~et. 5 ~o ‘~ should fall in

a

~-~ 5,~,00 a’ , -~ ‘ 50 • ,~ ‘~ ~~ ‘“’“~ “ to -—a’” ~ ~“ .~ ~

~ ~ ~-~— ~ .~ ~63 so ~ 63 ‘-~ ~ 63 so 63 ,..

f,s. 3ards. a yards. yards. 0 yai-ds, yards. yar,ls. yards. sees, inS.

1307 S 11 52 73 14’65 7 5 10100 55’O 4’l!) 11-0 1741 11’SS1300 5 12 S 72 14’S4 7 12 30200 65’6 422 11’S 17’S!) lI’741293 8 12 23 72 1498 7 19 10300 56’2 4’34 11 ‘6 17’!)! 11 ‘6!)1286 7 12 38 71 !S’i3 7 2!) 10-100 56’8 446 il’S 18’iS 11’S-S1279 7 12 53 75 1527 7 33 10100 57’3 4’SS 121 38151 16’SO

127!) 7 13 5 70 1542 7 4!) 10600 5859 4’70 12’7 18-67 11’421261 7 13 21 69 IS’S!) 7 4? 10700 5S’0 4’83 13’l 1893 11’341218 7 13 40 68 15’?! 7 5-1 10800 59’S 4’97 IS’S 19’15 1!’271251 7 11 51 67 16’SS 8 1 10900 59’S 5’lZ 13-S 1945 11 ‘1131244 ~ 1111 66 16-00 S 9 1100!) 503 S’27 14’S 19’72 11’iS

1237 6 14 2)5 65 16 ‘14 8 1!) 11100 00-S S’42 147 1999 11’Ol1270 6 14 42 0-1 1629 8 24 1120!) 61-S P58 151 20-2!) 1198122:0 6 14 .58 63 16153 8 32 11300 l32’2 515!) 16’S 2061 10’Ol121!) 0 IS 15 62 1618 8 40 1140!) 62’S 892 16’S 2082 10511209 6 15 31 6! 1!)’72 8 48 11600 63’4 6’!!) 16’3 21’l!) 1!)’7?

1202 6 15 48 60 16’87 8 57 1150!) 64-0 6’27 16’? 21’35 IO’?O1105 6 1!) 4 59 17’Ol 9 S 11700 64’S 645 17’l 2168 10-631188 6 16 21 .58 1716 5 14 1180!) 6S’2 6591 17’S 21’SS lu’S!)1181 6 1637 58 17’30 0 22 11000 65’S 6’SS 179 2228 10’491174 5 16 .54 57 !7’45 9 31 3200!) 36’S 7-03 153 22’SS 1042

1167 5 17 H 57 17’S) 9 4!) 12100 671 7153 18’7 22’S) 10351160 5 1? 28 56 1?’74 S 49 1220!) 67’? 7’42 19’! 2318 10’S)1113 5 17 45 55 17 ‘88 5 58 12:30!) 68 ‘3 7 ‘332 19’5 23.48 10‘21114!) 5 18 3 54 1S’03 10 7 12400 69’!) 7-83 19’S 23’TS 10’S)1139 5 18 20 53 1517 10 16 12500 65’!) 8’OS 203 2408 10’OS

1112 5 1838 52 18’32 10 2!) 12000 70’S 826 20’? 2439 1002112!) 5 18 55 51 l8’4!) 10 3!) 12700 70’S 8’60 21’l 24’S!) P961120 5 19 13 50 18’61 10 40 12800 71’S 9,74 21’S 21-0!) 9’S)1113 S 19 31 49 1575 10 5!) 1290!) 72’!) 959!) 21’S 25-31 9821107 5 19 49 48 1S’00 11 6 13000 72’!) 5155 22’S 2562 0’?!)

110!) S 20 7 48 10’04 11 16 13100 71’3 5’SO 22’? 21-9-1 fl’S)1094 4 20 21 47 IS’IS 1! 27 13200 738 9,75 231 262!) 959-31088 4 20 43 47 19’33 11 37 1330!) 74’S 10’OO 23’S 2658 9’S!)1082 4 21 1 4!) 1S’48 1148 33-100 75’S 1025 23-9 26’S! 5901076 - 4 21 15 49 1962 11 59 13500 75’? 10’55 24’S 27-24 0.43

1070 4 2! 38 46 1977 12 10 13600 76’4 IO’82 24’7 27’17 9371064 4 21 5!) 45 1991 1221 13700 7?’i 11150 25’l 2?’SO 9’S!)1058 4 22 15 44 2006 12 12 13800 77’? 11-40 21’S 28 ‘24 9-241052 4 22 32 44 2020 1243 13500 784 1170 25’!) 28-58 9’l?1046 4 22 52 4-4 20’S) 12 54 14000 79’!) 12-00 26’S 2802 0’ll

The proportionalresistanceto penetrationof wroughtiron, compoundor mild steel,anti Harveyecl. armour,may be ta’iecn roughly ao 1 : 14: 2.

A 02-inch common shell, with a velocity of about 2,000 f,s., may be expectedtoperforateabout6 inchesof ETarveyedarmour, if struck direct, or about 5 incIsesat 30°tothe nor,nal.

Under similar circumstances,a 9’2-itiehs arrnour’piercing shell may be expected toperforate about 9 inches and 7 inches llarvoyed armour, and it would probably perforate

0 inches of compoundos’ mild steelormo~lri~~t5’uck clii-ect or at on an~1eof 3Qa’ to thenormal.

(9389) II 2 -

116

RANGE TADJJE for 92-inch B.L, Guns, Marks IX arid X.(~CompositeCharge.)

jI~scdon Practiceof 3G.~’.00and 11.6,01,

(lUinulcI 43,941, 49,750III, anti 51,5-14,)

401855494

(weight, 77~lb.1057

Charge,.~ gravimotric density,~

~,aature{ 744 lb.cordite,size4 t, and3 ,, ,, ,, 3~

fnature,castsLed,pointed,corn-Projectile, -~ neonshell,Mark It,

I,, weight, 380lb. -

Muzzlevelocity, e,iDO f,s.

Nature of mounting, ~arbctLe,

Mark V..rsnup,nil.

~1i~. :~‘57 ~a,C.5 30’toEso ~S.

~S-~ -S:23‘1157 -S-’~45z~ ~,i5a’ 063 so

.2e5‘~‘2so‘~‘0-4

5 nelautes’

di-Sectlonalterspoint of Impact.

.t’.

it’ ‘Ng

~~ .5

e’,~

~ -,~~

~

~-s~.s005,.

~1~-~aan0

50 percent, of

rou-tids should fall In

‘

~ ~.,,.2

~~

‘~~

04Os0 120 18O 20

O 260 290 14o 38O 4!)

0 47O 520 571216

1 I~l1 101 211 2!)1 31

1 361 4114!)1 5-21 57

20292 152 212 27

2 332 392 452 522 55

S’s.

217721692 1:31521202091

208:12066‘204720292011

199.519151958194!1924

19071890187418581842

18261810179417381762

17471712

171717091687

16721058164410501610

1432714477158‘286

22919716916153,3

122110300

528?

5!75716463

595654SI49

484442‘103S

3736343332

yards.

14214!)12813!)1:34

132130128126124

1212121120It!)118

117116115114113

11211!11!)105108

10730!)105101103

1021011005905

yards.

0 ‘140290430’SS0 ‘?2

0’871 ‘015 ‘161 ‘311 ‘45

1 ‘CO‘‘741 ‘892’032’18

2-522’47I’S’2-762-91

305-32!)3,343,493’S)

3783’924’s?4’2I4’S!)

4 ‘014’854’SO4.94S-OS

03070 110 150 15

0 230 27O 310 850 39

0 410 470 510 550 59

1317ii!115119

1 231 271 311 351 39

1 441 481 531 5722

272 12‘2 152222 27

yards.

1002!)!)300400500

600700800900

1060

1100120!)130014001460

10001700180019002000

210!)2200210024002500

260!)27002800290!)3000

31003200$300:34009500

I1~1415

2242S35

444

546646-

8818-9

1010551314115

12412131314

yards.

21’O21,421’S2’Zl22’8

21 ‘221124’l24’S25’O

25525’9253’426’S27’S

27’?25’S28729’S2S’7

S!)’230’?31’231,732’3

32’833,434-034’!)35 ‘2

yards.

0150’S?O ‘400-420’45

0’4705900520’S)’,0’S)

0600’S)0’660’S!)012

0’7605900’840880’92

0’S!)1001’041 ‘OS1 ‘12

1’!!)1 ‘201 ‘241’zS1 ‘33

yards.

0’i0’lO’I0’S0’l

0’l0’l0’20 ‘20’S

!)‘30’40’40’S0’S

0’6O’607U’S0’S

1 ‘01 ‘11 ‘21 ‘35 ‘4

1 ‘53’!)1 ‘7I’S1 ‘9

sees.

P140’25P430’S)0’73

0’S)1 ‘031 ‘iS1 ‘331 ‘48

1 ‘631 ‘761 ‘932’OS2’24

2’4!)2’562’723’858 ‘04

S’203’S?3,533’S)386

4’034’204,374.544’71

4 ‘855-07,522.5‘405’OS

117

RANGE TABLE for 9-2-~nehB,L. Guns,Marks IX andX—conUnued.

,,:,ne

6~~:‘0 ~,5 ‘.5’oe~~ c-gd

c’-~~-_ ~

so a’000h ~

~ :~-~63 so

.2~“57~

~

~

~-4

eIevailon~r 00 percent,ofdeflectionslte,s ~,-._ roundsshould fall Inpoint of Impact, 0

‘~‘g31g0 005,. .~ S.. 11 . 4 ~ .2

~ ~ ~~~_fI,~_ ‘~ ~ - -~--

.2~i~so.o

‘~

—~‘---

36S IS3 213 283 36

3 443 5240494 17

4 264 3’)4 444 5:353

5 135 9:35 3_I5 4:35 S3

646 156 26O 276 48

6 557 117 227 347 46

7 58898 218 3~3S 45

8 579 109 230 3!)5 49

10 S1!) 1710 3110 4511 0

111511 3!)11 4512 112 1?

12 3512 4913 613 2253 39

13 5!)16 1314 3014 48iS 6

f’s’

16033588157515)321549

15.5!)1624151256001488

3-1?!)14641 s5:l11121131

142114111401131311-381

1371036113511:3411332

13231314130512!)?1289

12811273126632571230

12-1212353227122!)1213

120!)11993193118?1181

1115117!)1163116011513

335011453141113?1133

512911263122IllsIll!)

yards.

3129282726

2524242322

22212019IS

IS55171716

1615151414

131:3131212

12ii111111

101010SS

5S98S

8S57I

77776

66666

yards.

67156959-I1)3

0201508988

87

8483

SI807915

777!)757473

72It706905

670!)(3-i6163

03

Si6!

SO6!)595958

5887576606

857,5649453

5352525161

yards,

P236’3565925-6?5’Sl

II’S!)0’!!6 ‘25P406’S-I

6’S)6’S351-987-137 ‘27

7’427 ‘5!)7 ‘717’858-0!)

8’148’S)8’438’SS8’73

8’S?a ot5’!!)9’SOS -41

O 605 -74S ‘89

1018

10 ‘32104!)1!) ‘6!)10761!) ‘89

11’041! ‘19113411 ‘4811 ‘63

11 ‘7711’SZ12’!)?12 ‘22is’s!)

12’s!126512’sO12’S413’Os

532113’331353II’S?13’S!

2 322 372 432 482 54

2 SS35a ioS 1!)3 21

3 273 3,33 393 453 5!

3 5743494 1154 21

4 274 1114 4!)4 464 53

507,75 145 215 28

O 355 42S 5!)5 5785

6 13O ‘215 290 376 45

6 5371797177 25

7 347437 5!8085

8 185 278 3?8 468 56

951515S 259 35S 45

yards.

36003700380!)390!)4000

4150420!)430!)4400

- 4500

46004700480040005000

51005200530054005500

06005700580!)59006000

61006200030064006500

660!)0700630!)69007000

71007200770!)74007500

7600770078007000800!)

810!)820!)530!)84008500

80008700880089000000

9100520!)530094009500

yards, yardo~

118 2591.41 2’!1158 I’S1’53 2’S1’58 2’4

1-63 2’6168 281’73 3’!)i’78 i1’2183 3’4

188 3’!)1-93 3-61-99 4-02-04 4-22’lO 4’4

2-15 I’S221 4’S2’26 5’!)2:32 6-22’S? S-4

2’43 5’!)I’S) S’S2’S) 6’S2’61 6’SI’S? 6-8

275 7’lI’S) 7’4286 7-82’S3 8’S2’SS 8’S

3’OS S’SI’129’2115 5’!)3155 10’O3’32 10-4

1’38 10’S3’45 11’23591 11’!)358 12’S3-64 12’!)

3’71 l3’l3,77 13’!)384 14’S3’SO 14’S3’S? 1515

4’S) 16-0411 1!)’!)4’lS 17-2425 17’S4’S) 18-4

455 10-04’!!) 19594’S) 20’S4’60 21594’GS 21-7

4’75 22’44’SS 23’!4’91 23-84-99 24’S559? 21’4

yards.

15’S36.437 ‘03?’!)3d’s38’S39.440-040’!)41’S

42’O42-743,444’S44,5

45’!)46’447’l47 ‘545’S

49,47,015510II’S52’8

53.?54’6oS’S56-457’3

58’S59 “260’S6l’Z62’Z

63’S01’1OS’S66’?67 ‘8

69’!)70-0271’4

73’S

75’O76’S7?’!)78’S5!)’2

81’!)83’O84’485’88?’Z

88’S90051 ‘492’S5-I’S

14-41519516165

1717518184iS

1912020421215

2222232324

20‘264262627

272825294

sees,

5765’S-I6126 ‘:106,49

65986’S?7 ‘067 ‘2!)7 ‘4!)

7’S!)7 ‘868’S)8‘278158

8-6SS ‘SOP115,33S 8-I

5.7!)P98

10’z!)10 ‘42!O’61

I0’SS11-111l’341158II’S!

12051229125312’7713’O2

11-26IS’S’1315-3140014’24

14-4954-7414’S915 15415’49

15’74160!)1!)’SS16511!)’?!)

170217’S)17’2S17 ‘6018-07

18’S)1551188’)191715’45

118

RANGE TABI,57 for 9’2-iueh B.L. Guns,Marks IX a-ndX—continueo~.

‘

~‘

~57S.

.~eS‘115704~“-

- 3~ 5~ ~‘5 n~e~

~‘~,0C~~

I~

.2e~

~a’a’55

-~

5 mInuteselevatio0or

deSertion alterspothtofi,spsct.

~,~ ‘~“0 57~

~“~~

14

~.7C5”

~

“ci’’So ~~

‘- S ,,,-,-~5,, ~

so0~~~0

~ ‘-~~

so~-’2~

~

SO percent,ofrounds should dalI in

-_--

. -,0~ ‘0 .da S -~

,~ ~

,~2s

!~~

~

5.s,

11131110110711041101

1015?lOSS1092109!)1087

10851082108010783076

107410121070lOSS106!)

10641002103010583056

yards.

06S80

56555

54444

44444

44443

‘

15 24IS 4216 016 15IS 17

1654171417 3317 0218 11

18 3018 4919 919 2815 48

20 820282!) 4821 921 29

2! 5!)22 1!)22 3!22 5125 12

yards,

5050494948

48474?4646

4545444443

4342424141

404!)103539

yards,

13’S!)14-!!142614’4!)l4’SS

146914’841495151315’I?

15152155615’?l15’SS1600

i!)’141!)’SSJ!)’43185951672

II’S?17’O!17’S!)17’S!)17’49

‘

9 4510 510 1810 2510 35

104510 4611 611 17Ii 28

11 3511 5012 112 1212 24

12 35-12 4?

12 S813 1013 22

15 3413 4!)13 IS14 1014 22

yards,

9530097001(8000000

10009

1010010200101001040010500

1060010700105001090011000

1100011200113001140011500

11600117001180011900120!)!)

,,,...

.,,

.,,

.,.

...

.,.

.,.,,,..,

..,

.,,

..,,.,...

..,,,,.,...

,,,

,,..,,,,,,,,,,,

yards,

OsS’797’298’S

100-3-603’S

103’SlOS’S100’?108’S609’S

111’S11359114’7ISO’S117’S

119’S1211522’?124’S125’S

127’S129’I110’7152’S133’S

yards,

S’lSP23P31P395597

P55P64P735’SSP96

6’036’550’21PSI0’S)

0566’610150591O’91

7’OlI’S’.7’217’3I1’41

yards.

26’S27128’OIS’S29’S

30’SS2’O33’O34,33S’l

36’237’I38’S39-440’S

41’O42’743’S455946’S

47’S48’S40’?50952’3

sees.

15’742059320’322O’!)iZO’Sl

21’212159121’S!‘22’1222’43

22’74230521’S!)23’6723’9S

24’3124’SI24’SS25’S)25’S)

25-9516-2!)26’S)26-9227’s!)

119

RANGE TABLE for 9’2-inch B,L, Gun, Mark X(three-quartercharge).

Basedon Practiceof 23,8 and 14,9,04, previousto wl~iclithe gunhadfired17 proof, 52 full, and34 reducedcharges.

40w’o’274

Minutes 57,983 and 59,Ol7xc.

f’weight, 90 lb.

Chargo, -~gravimetric density DO’3 Muzzlevelocity, 2,225 f.s,, in anearlyI 0307 new gun, at 80 Jjnli,t,,nature,cordite MD., size37.

Natureof mounting, barbette,MaskV.

I nature,cast steel, pointed,Projectile,-~ common shell, Mark VI. Jump,1111,

I weight,380 lb.

NOTE,—This RangeTable is also suitable for the 9’2.inch B.L. gun, Mark IX, onbarbettemountings,Marks III andIV, with the following modifications :—

On Mark III mountingthe jump is —7 minutes,anti I-he elevationsgives)in thetuble shouldbe increasedby that amount,

On the Mark IV mounting the jump is + 3 minutes,andthe elevationsshouldho reducedto thatextent througllout.

S mInutes’ n~‘ elevationor ~ ~ per cen , a~ 100 alterS .2, e:0 ~ ~hou1d fall In

S. — 0~~ _______ .0

~:~3 a’ 4so ,,. *~...14 5) a’ -~ ‘0a 57.5 a’5s, ‘ire a ‘

so ‘S o’~’a’ 0 4 -—63 63 ~‘o 5” ~ 14 01 63 14 so

6.s, yards, yards. yards. ° ° ‘ yards. yards, yards, yards. sees,

2207 - 149 0-14 1412 0 4 0 S 300 ,,, ,,, ., 01532189 147 0’2!) 716 0 5 0 7 200 ,,, ,., .,, O’272172 146 0’43 477 0 12 0 10 300 ,.. - ,,, ,,, 0412154 144 058 358 0 16 0 14 400 ,,. ,.. .., 0’SS213!) 142 072 28!) 0 20 0 17 100 ,,, ,,, ,,. 0-69

2119 141 0’S? 239 0 24 0 21 600 210 0’35 0’l O’832101 139 1’Ol 205 0 2S 0 24 700 214 O’a7 0’! O’S72084 137 i’ll 179 0 52 0 28 800 21’S 0’IO 0’! 1’S!206!) 13!) 131 150 0 3!) 0 31 SO!) 22’3 O’42 0’! 12!)2049 134 1,45 143- 0 40 0 36 1000 ‘22’S P45 0’S 1,49

203! 132 160 130 0 44 0 35 1100 23-2 04? 01 11552014 331 174 - II!) 0 48 0 43 1260 25’? 050 0’! 1701997 129 1’S!) 110 0 52 0 4? 1800 24’i 052 0 ‘2 1-851980 128 ‘2’O3 102 0 56 0 51 1400 26’!) 0-515 0’S 2’O!)1963 126 2’iS 95 1 0 0 55 1000 250 0’S? 03 2-15

1946 125 232 85 1 5 0 59 1600 25’S 000 03 2391929 123 2’47 83 1 9 1 5 1700 25’S 0’63 04 2’461912 122 2-01 77 1 14 1 7 1800 264 066 p4 2’S!1805 12!) 2’?!) 73 1 19 1 11 1900 26’S 0595 0’S 2’??1878 115 2-91 68 1 24 1 15 2000 273 0-72 0’S 253

1881 11? 3.05 64 1 29 1 IS 2100 2?’? 0’?!) 0-!) 3’Os1845 116 5’20 61 1 14 1 24 2200 2S’2 P80 0’!) 5-25

.1829 115 5’S4 5? 1 40 1 28 2300 28’7 0-84 0’7 3,411813 113 3’49 55 1 45 1 33 2400 IS-S 0-88 0’S 35971798 112 3’GS 52 1 11 1 37 2500 29’? 0-92 0’S 3’74

1783 110 8,78 49 1 57 1 42 2600 502 096 1’O -5511765 109 3’92 4!) 2 4 1 4!) ‘2700 710,7 1 ‘00 1 -1 4081753 108 407 44 2 10 1 51 2600 31-2 1’04 1-2 4251738 106 4’Il 42 2 37 1 55 2900 317 I’OS PS 4’421723 105 4’S!) 40 2 23 2 0 3000 32,3 I’12 1’S 4.00

120

RANGE TABIE for 92-inch B.L, Gnu, Mark X—conUnued.

c_to5 mlnutea’ — 0 50 per cent,of

D~ cleva!Ion or roundsstelleetlonallers should fall inpola!oflmpac!. ‘S~~ ~

—a’-’555. ‘~ :-~ .5 ii 30

I ~ ‘~ ~ ‘ 4 ~ sod‘—a’ ‘ -4 1.5 ~. uso.-

a’ 8 I a’U jLL~ 0’’ 0 14 s-I01 p-a’ so. -4

f,s, yards. yards. yards, “ ° ‘ yards, yam’ds, yards, yards, sees.

1708 104 451 15 2 30 2 5 Sl0~3 SI’S I’IG 1-0 4’7816975 103 4-66 51 2 36 2 10 8200 54’4 120 1’!) 4-is!)1079 101 4’SO 35 2 43 2 15 3309 34-0 121 1’? 41541604 1011 4’S) 34 2 50 2 20 14!)!) 34-6 128 S’S PSI1650 99 6-09 32 2 5? 2 20 3500 31’S P33 l’s 5’S!)

1635 08 P23 11 3 4 2 80 36!)!) .75’S 1’SS 2-0 5’681021 9!) 535 30 5 12 2 35 3700 36,4 P43 2’! 586ISO!) 05 5‘02 29 3 19 2 40 3800 37 ‘0 1 ‘48 2’Z 6053592 94 557 28 0 27 2 45 3900 37,6 1 ‘53 - 2,3 0 ‘241578 93 5’S! 27 13 35 2 50 4000 58’S I’S) 2’4 615:1

11(64 92 5,5!) 2!) 5 43 2 56 4100 38 ‘8 1 ‘63 I’S 5-021051 01 0591 25 3 52 3 1 420!) 354 1’68 I’S PSI1S38 90 6-25 24 4 0 3 7 4300 40’!) 1153 5’!) 75921529 89 040 23 4 9 5 13 4400 40’!) 1’IS 32 7’ISISIS 87 6,54 22 4 IS S 19 490!) 41’S 183 859 7592

1499 56 669 21 4 27 S 25 4600 42’!) 1’S) 5’!) 7’62348!) 65 !)‘85 21 4 Sc 13 St 4700 42’? I’93 S’S 7’821474 St 595 20 4 40 S 8? 4800 43-4 I’S) 4’0 8’S)3461 85 713 10 4 SIS 3 43 4900 45’l 204 42 81141449 82 7,27 IS 5 6 3 49 5000 41’S 2150 4.4 8’45

1437 5! 7-42 IS 1 16 5 65 510!) 45’S 2’lO 4’S 8’S!)1425 80 756 18 5 28 4 1 5200 41.4 I’ll 4,8 8575415 79 7’75 57 5 36 4 7 516!) 47’l 2-2!) P0 9,081400 IS 780 17 5 40 4 13 5400 47’S 2112 P2 P291890 77 5’S) 1!) 5 57 4 19 5500 48’!) I’S? P4 0’Sl

1375 76 834 16 ‘ 6 8 4 26 5600 49’4 I’S) 5’!) S’731308 75 S ‘29 - 15 6 19 4 32 5700 50-2 249 5’!) 9’S)3317 75 843 15 6 51’ 4 39 S800 51 ‘0 2 ‘50 P2 10’171:546 74 8,98 14 6 42 4 46 5900 SI’S 261 0’S 10’393330 73 8151 14 0 54 4 53 6000 52 ‘8 2-67 6’S l0’62

1324 72 B’S? 13 7 1 5 0 610!) 537 215 7’S 105951:s13 71 901 13 7 17 15 7 620!) 54-6 280 74 115981103 70 5’18 13 7 29 7, 14 6300 55’S 2’S) 7,5 II’S)1293 09 9,30 12 7 41 5 21 6400 504 253 S’S 11,54I2a3 6~ 9’~7t 32 7 53 5 25 6500 57’S 299 S’S 11.77

1274 68 9-00 82 8 6 5 35 6600 58’S 306 8’S 12001265 6? 9-74 11 5 19 5 42 6700 59-2 3’lZ 9-2 11’S)1256 60 959 11 5 33 5 59 6800 50-2 S’lS 9’!) 12’483247 65 10593 11 8 46 15 57 6900 61’S 525 100 !2’723239 66 1018 11 9 0 0 0 7000 622 332 10’4 12’S!)

3251 04 10-32 10 0 34 6 83 7100 6_S’S 3’18 5059 15’S)1223 63 10-48 10 9 38 6 2! 7200 6459 5.45 11’2 13’463215 62 50590 30 9 42 6 29 7300 05’S 3’Sl 31’6 33’?l1207 62 1075 10 9 57 6 31 7400 6!)’l 358 12’l IS’S?1200 6! ID’S) S 10 12 6 45 7400 6159 004 12’S 14’29

3193 60 1104 S 10 27 0 53 7605 69’!) P71 33’S 145991187 09 1119 9 10 42 7 1 7700 70’S P7? 53-6 14751181 5-9 II’14 S 10 s7 7 0 7800 714 .7’84 14’S 15591.1175 IS II’S) S IS 13 7 1~ 7900 72’!) 390 14’8 15’S?3159 07 1!’Sa 8 11 29 7 26 8000 73,8 3’S? 1559 IS’S)

1163 57 11’?? 8 11 41 7 ~5 8160 75’!) 4’04 36-0 )5’80115? 56 1192 8 - 12 1 7 44 8200 76’S 4-11 ]6’O 16-071151 55 1207 8 18 15 7 ~3 8300 7711 4’18 37’2 W’341145 55 12’22 7 12 34 8 2 8500 78’S 4’SS 17’8 16’S!1140 54 II’S!) 7 12 01 8 11 %5u0 SO’S 4’32 18’4 18’58

1134 54 11251 7 IS 8 S 20 8000 81’!) 4’59 19’O 17’!51125 53 12615 7 13 25 5 30 8700 83’O 4’4!) 15’!) 17’455524 52 12’S!) 7 13 42 5 55 2800 84’4 4,03 20’3 17’653119 62 52’S! 7 14 0 S 49 8900 85’S 460 250 17’S!)1184 61 !1’09 7 116 38 8 55 9000 87’S 4’S) 217 18’24

121

RANGE TABLE for 02-inch 13,L, Gun, Mark X—con/inuecl,

~‘,

‘0.25’

~‘-,,,

.~

~5

~

5mi’mutes’elevatIon or

deflectIon alterspoInt of !uupi,ct,

— ~-.

~~

~ ‘~

57~

~

0~2.~.5‘5 a’

~~

~

-0-~so0~

~

h‘5‘..~‘On

~

ai2~5’

~

‘4~

~

4On~

50 per cent. otrounds

sh-juld fall in

~‘~ 4‘~i ‘~

~

4S

o~‘~

so

~

f,s, yards. yards. yards~ ° ‘ yards, yards, yards, yards. sees,

5109 51 1124 6 14 55 9 9 9100 88-!) 4-75 22’-! (8521101 SO 13-38 6 14 54 S 19 92)!) 911’!) 485 23’S IS’S!)1099 50 1353 6 15 13 9 29 9300 51’4 4’91 23’S 15051095 49 13-67 0 15 32 9 33 8400 92-8 4’99 ‘21’!) 19371091 48 13’Sl 6 15 51 5 49 5500 95’S 5’S? 25’4 19’S!)

1087 48 13’S!) 6 16 10 9 55 060!) 95-7 P55 26’S 19051083 48 14’Il 6 18 29 10 5 970!) 9711 5113 27’! 2)211079 47 14-2!) 6 18 40 10 20 9800 08’8 P31 28’9 20’S)10?!) 4!) 1440 S 17 5 10 50 990!) !00’3 5,39 28’9 20521672 4!) 14’S) S 17 25 10 41 10000 101-1) 5’47 29-S 21’lI

5069 4!) 14’S) 5 17 48 10 52 10100 10:35 5’35 30’S 21-421066 45 1481 5 15 5 11 3 10200 150’! 5’!)! :is’!) 21721083 45 14’98 5 13 25 11 14 10300 1011’? S’73 33-0 22031060 44 11-13 5 15 48 11 25 10600 108’3 5112 34’! 22’341057 44 15’S? 5 19 8 11 36 105!)!) 509’S 5’91 35-1 2261

1055 44 15’42 5 15 28 I! 48 10600 11l’6 6’Ol 36-2 22-971052 43 IS’S!) 5 19 49 11 59 10700 I13’l 6’!! 37’S 23291050 43 15’71 5 211 (5 12 11 10800 110’7 6’S! SPIll-SI1043 42 15113 4 20 30 12 23 10901 115:3 6’S! 39’4 23931018 4-2 16110 4 10 50 12 35 11000 117’S 04! 40’S 24’ZS

1014 42 IPI4 4 21 1! 12 47 1110!) 119’S 6’S! 410 24-571012 41 1629 4 21 31 12 59 11200 121’! !)‘61 4’2’7 24,891050 41 I!)’43 4 21 12 13 11 11:100 122-? 671 4:1’S 25’211038 41 16-58 4 22 33 13 2,1 11400 114’S !)‘Sl 45-0 25031038 40 10-72 4 22 51 13 35 11500 123-9 6111 4!)’l 2185

1034 40 II’S? 4 21 55 IS 47 11600 ill’S 7-01 47-3 29’171032 40 17’OI 4 2:1 16 13 59 11700 129’! 7-1! 48’S 24-49io:io 39 13’)!) 4 23 37 14 32 11810 130’? 7-21 49-7 2)011029 39 17’SO 4 2:3 53 14 24 11900 1:33’3 ?‘31 50-9 271:11027 39 17-45 4 21 19 14 37 1200!) 133’S 7-40 12’! 274!)

102!) 38 1?’SS 4 25 40 14 49 1210!) ,.. .,, ,,. 27781025 38 17’74 4 20 1 15 2 12200 ,.. ,.. ,,, 25’!!

122

RANGE TABLE for i-inch Aiming Ttibo.

l3asedon Ps’actieeof 25.6.00. -

71

161

Minute,49629 (a) and (is), -

A5tMvNn~IoN,Eaucmxc,Aosotoen Rutan, MAnIC IV, M. on K,N., on- PEioco~ssoou,M

1&suo I,

Muzzle velocttg,1100f,8, -

SlopeoOdescent.

5 minutes’elevatIonor deflectionallcrs point

of Impact,-~

VertIcallyRange. orlaterally,

2t~vi’rmosu. limoS,

50 per cent, of rounds shouldfall in -

-

Length.-

IlcescSth, ISeIght.

1 in, yards, yards, Sega, c_ins, yards, yards. yards, yards.

3-13 30 0’14 0 I!) 100149 15 0’29 0 32 20!)90 110 0’43 0 48 00061 30 P50 1 4 400 -45 29 0’72 1 21 100

18 29 0’S? 3 39 600 10’O 0’lG 0-3025 28 1’OI I IS 70!) 10’S 0’SS 0’4!)23 2? S’I6 2 12 400 3!)’? 0’40 0’OS19 27 l’3I 2 50 000 11’2 P43 0,6416 26 1’45 2 49 1000 Il’S 046 O’78

14 20 I’S!) 3 9 1500 12’S 0’S!) 0’9412 25 5’74 5 30 1200 1359 D’S) l’1210 24 1599 13 52 330!) 33.9 P61 1’329 23 205 - 4 15 1400 14’? P65 1-568 02 2-18 4 58 150!) 15’S P77 P84

7 21 I’S) S 1. 3600 16’S 0’S? 2’167 253 2’47 5 25 1700 17-7 , 0’98 2050 15 2’81 5 50 1800 18’S 1150 I’S!)6 38 P76 6 10 1900 20’S l’SS 3’44

18 291 0 43 2000 II’S 1597 5’S?

O 15 3’S) 7 50 21!)!) 22’? !‘53 4’SS5 17 5 ‘20 7 38 2200 24’O 1 ‘70 5 ‘204 17 P34 S 6 2300 25’S 1’S? P004 17 3.49 S 54 2400 2!)’!) 2’05 P644 17 3,63 S 2 2500 28’!) ‘2’25 7’40

Nors,—W1~enflritsg OVCO water at 1,000 yards range, time bullets ricoehotes~about1,200 yardsmore, coIning to restatarangoof about2,200yards.

123

DRILL FOR 9’2-INCH1 B.L. GUN, MARK IX,ON BAItBETTE, MARK III, MOUNTING.

The gun detachmentconsistsof a Gun Captain,a Gun Layer,anti nine othergunnumbers,andan additional layer from tile ~O 0/

sptu’e. It falls in andis told off in the usual manner,

For the duties of Gun Captainand Gun Layer, see “GarrisonArtillery Training.”

AMMUNITION SUPPLY.-

Cartridgesare supplied from recesses(or depOtsif required)byhand to the gun. Supply may also be made to the level of theemplacementby lift, - - - - -

Projectilesare supplied from recessesin the emplacement,andfrom depotswhich shouldbe arrangedroundthegun platform undercoverof theparapet.

The lift frons the shell and cartridgestore, by meansof whichtheserecessesand depOtsaresupplied,may be used for direct supplyin actionif necessary. -

The normal supply of ammunition will be from tile recessesordepOts;in this case 6 and 8 supply cartridges,and 7, 9, and 10supplyprojectiles, This supply must be made intelligently, as thegun is travel-sed,from themostconvenientrecessor depot.

When supplyis from lifts, lids of cylinderswill be Loosenedat thefoot of thelift,

Empties will be stacked by 6 and 8 without obstructing theworking numbersat the gun.

AB the recessesand depOtsonly hold a limited numberof rounds,it will be advisablenot to reducethe total for each gun belowsix,but whenthis point hasbeenreachedto changeto lift supply.

In addition to the abovedetail, whea guns are served by liftsdirect, m~seadditional numberswill be requiredto supplyandworkthe lifts.

If only onelift is providedit is generallydesirableto detail someof the numbersto carrycartridgesin cylindersto cartridgerecessesor depOtsdirect, the lift beingreservedfor shell only.

To PiosL’ARE FOR Ac’rio&.

See“Garrison Artillery Training.”

The storesarebroughtup as follows from thegroupstore

Gun Cnptain.—A pieceof chalk,Gun Layers.—Sights,pistol grip, screw-driverandconvergence

table.2,—Electric lock, electric tubes, tube box, pocket gun-layers,

vent bit, rimer, extractorlover, MoMahonspanner,nut vent wrench,wrenches,breechandfiring rnecllanism,oil ~ Russiantallow, andwaste. For di’ill, a drill tube,

124

3,—Percussionlock, percussion tubes, tube box, and lanyard,loadingf-ray if required. For drill, adrill tube,

4.-’--’Brush.ranimer-and’.sponge,bucket, filled with water, sponge-cloth andbrush.

5,—Winchhandleandbox of spareparts.6 and 8.—Koys of cartridgeand shell recesses,For drill, drill

cartridgesin zinccylinders,andcartridgeextractor.7, 9, and 10.—Projectile harrowsand brush; two keys, fuze,

universal; two keys, basefuze, and plug (when required); greasebox; driver,grummet; mallet, tininan’s. For drill, drill shell andshell extractor.

Thio following group storeswill be broughtup, andsuch othersasarcconsiderednecessarylocally :—

Hammers,claw ... ... 1 pergroup.Clinometers ... ,.. ,.. 1 per work.Instrumentstesting primary

batteries... .,. ... 1 perwork.Drivers, screw .,. ... 2 perwork.Whistles ,., ... ... 1 pergroup.Brooms ... ... ... 1 per group.

When the storesarebroughtup the Gun Captain gives “A 1,

Preparefor Adieu,” andsatisfieshimself that thebuffers areproperlyconnectedup, not leaking at tlle glands, and contain the correctamount of oil, and that the eapsquaresare properly secured.‘When the breech is opened,he looks to see that the bore is clear,lie sees that time ammunition is properly prepared. He super-intends the firing of an electric and a percussiontubeto testfiringarrangenients,

The Autosight Layer, assistedwhere necessaryby the Rocking-bar Layer, fixes the sights in the gun, taking care that theforesights fit correctly, and that the deflection leavesof the hind-sights work easily. He seesthat the rocking bar and automaticsights fit andwork properly,that thebracketsandcarriersarefirmlyattachedto the mounting,andteststheautomaticsight.

Ho makesthe necessaryconnections,andteststhefiring circuitsby firing a tubeafter thebreechis closedwhenordered to do so bythe Gun Captain,

3 removes breechandmuzzlecovers,seesthat thecontrol gearis oiled and in good order, and inserts the percussion lock ifused. He attachesthe tube box to the mounting, placing sometubesin thebox andthe remainderin a convenientposition for use,andplacestile lanyardunder lIi5 belt.

He opensthe breechby turning the lever with isis left handandswinging it round,

When theGun Captainhaslooked through the bore the breechwill be closedin the reversemanner.

2 attachesthe tube box and layers pocket to the mounting,placingsometubes in the box and the remainderin a convenientPos1,~onfor use. He places the remainder of his storesin a con-~-enocntposition for use. He inserts the electric lock, if used, andmakes the necessaryconnections, When the breech is open hepassestho vent bit down thevent, examinesthe breech-screwandthreadsof the breech, seestilat they arecleanandfreefrom burrs,lubricates the threads with a slight film of oil and smearstheobturatingpad with Russiantallow,

125

As soonas the breechis closed ho insorts an electrictube,lowersthe actuatinglever, andgives “A 1, Ready.” He thenseesthat thetraversinggearis oiled anti in good workingorder,

In caseof percussionfiring, 3 insertsa percussiontube, lowersthe actuatinglever, hooks the lanyardand fires whenorderedto doso by theGun Captain.

4 seesthat theelevatinggearis oiled and in good working order,and with 5 he elevatesthe gun until the breechrestson the woodblock. Ho places the brash-rammer-and-sponge,the bucket filledwith water,and brush, in rearof the breech.

5, 6, and 8 go to the cartridge recess,depOt,or lift, loosen orremovebandsfrom covers of cylindersif not alreadydone. Fordrilltheyplacedrill cartridgesandextractorin convenientpositionsfor use.

7, 9, and 10 go to the shell recess,depOt,or lift, and prepareshell for loading, i.e., cleanand fuzo them if not alreadydone. Fordrill theyplacethe drill shell andextractorin convenientpositionsfor use. 7 handsa faze key to 3.

Each number will report to the Gun Captain regardinganydamageor deficiency.

After eachnumber has completedhis work ho takes post asfollows :—

Gun Captain,in the mostconvenientposition.Gun Layers,on the sighting platforms.2, on theright of the gun facing the brooch.3, on theleft of thegun facing thebreech,4 and 5 at the elevatingwheel,6, 7, 8, 9, and10 asabovedetailed.

To LOAD.

Gun Group Commander. GunCaptain.

“A Group Load.” “A 1 Load.”

4 and5 elevatethe gun if necessaryinto the loadingposition. -

3 opensthebreech,assistedby 2 whenrequired,andinserts theloading tray whenused,

2 extractsthe tube,rinsesout the vent, and, if necessary,usesthevent bit,

7, 9, and 10 bring up theprojectile on tho barrow and up enditon to the loading tr~tyof the carrier, they then slide the barrowclear, -

10 seizesthe handleof tho carrier and raisesthe projectile in~ with the bore andwhen high enough placesthe pawl into therecessin thearc.

When time shell is on the loading tray 3 will removethe safety -

pin and uncapthe faze, 7 supplieshimselfwith tho rammer aims!standsreadyto ram home.

The shell will then be rammedhome in one motion by 2, 6,and8 on theright side, 3, 7, and9 on theheft.

As soon as tho shell is home,3 will releesethe small cam onthe carrier and allow the tray to slide down. The number at thehandlethen lowersthe carrier.

7 and 9 withdraw the rammor with a corkscrewmotion, lay itdown, 7 and 9 removethe barrow and bring up anotherprojectile,which is placedon the loading tray andraisedto thehalf-way notch.

NOTs~--Thesponge head mti~tbe thoroughly ~aturated withwaterafter eachround. -

12t

The shell numberswill changerounds when required at thediscretionof theGun Captain.

6 and 8 bi-irlg up thecartridgecylinderswith lids unscrewedtothe last threadandplacethem in a convenientposition, taking casethat they arc clear of the carrier in lowering. 6 loads the firstcartridgeand 8 the second,havingfirst removedthemill boarddiscfrom eachcartridge.

3 removes loading tray when used, and closes the breech.Before closing the breech, care should bo taken to remove anypiecesof residuewhichwould be likely to interferewith the closingof the breechor damagetheobturatingpad.

2 inserts anelectric tube in thevent, or 3 a percussiontube, ifflu-mo’ by percussion,asbeforedetailed.

The tube is never to be inserted before the breech is properlyclosedunderany pretextwhatever. - -

At percussionfiring 3 thenhooks the lanyard and standsreadyto lime. -

- When all areclear of recoil 2 givestheword “A 1, Ready.” Atpercussion firing 2 will not give the word “Ready “ until 3 hashookedthe lanyardandis clearof recoil. -

At the word “Ready” 4 and 5 depressthe gun until “Halt”is given by tile Gun Captainor Cuss Layem-, according to the easeemployed.

6 and 8 remove emptycylinders and place anothercharge in aconvenientposition for loading,as beforedetailed.

7,9,and10 prepareanotherprojectilefor loading,asbe-foredetailed.2 and3 man tile traversinghandlesif required. -

To LAY AND FIRE. - -

See“Garrison Artillem~yTraining.”The normal methodof firing is by electricity. -

Tile normal means of laying is by i-ocking.bar sight at longranges,and by automaticsight when the target is -within effectiveautosight range.

Gun sights will not be used unlessthe other sights are out ofaction or not fitted. Tile tangent sight may have to be removedbefore firing.

2 and3 traverse,and4 and5 elevate,if requiredto assist. -

CaseI (TangentElevatioi-e).—-Rocking-barLayerlaysfor line andtraverses; he alsolays for elevation,directing the Autosight Layerto elevateor depress,asrequired,andfires.

Autosighit Layer elevatesor depresses,as ordm’ed by theRocking-bar Layer. -

Autosmqhts.—Rocking-barLayer lays fot’ line andtraverses,and,if ordered to do so, observesand acquaints Autosight Layer withhis observations, -

Alitosight Layer lays ior elevation, elevatesand fires, and, iforderedto do so, corrects by moansof the error ot day drum.

Case I1.—Autosight Layer lays for line, traversesand fires, byorderof theGun Captain,who givestheorderat “on.”

TheRocking-barLayerreadsdial (whendial is on themounting),puts on elevation,andgives“on” when thegunis correctly layed.

Caso IIL—Autosight Layer reads training dial (when on themounting), and traverses.

Rocking-barLayor readsrangedial, and elevates.3 fires by pel’oussion,by order of the Gun Captain,wh~gives

theorderat “on” from bothlayers.

127

AFTEII Frusso.

As soonas thegun is flied tho Gun Captain retrievestime firingplug if used; 4 and 5 bring the gun into the loading positionwithout further word of command. At percussionfiring, 3 unhooksthelanyard ; 3, assistedby 2 if necessary,opensthe breecim; 4 laysthe spongecloth over the mushroomhead, lIe will riot wring it outl,ut place it on as wet as possible; 2 extracts tIle old tube andattendsto the vent. Thegun will be at oncereloaded.

To UNLOAD AT DRILL.

The grin is unloadedby the numberswho loaded, 6 supplyingthe cartridge extractor, 7 the shell extractor. 3 sees that theloading tray is its the proper position to protectthe threadsof thebreech.

Fon Aci-mos, UNDER Coveis, Missu’umn, CEASE Fiai~o,R5PLs~CEMENT

OF CASUALTIES.

See“ GarrisonArtiliem-y Training.”

Thepositionsundercoverareas follows:—2, 4, Rocking-barLayerand Gun Captainon theright of thegun.3, 5, andAutosight Layeron theleft of thegun.6 and8 at thecartridgerecessor depOt.7, 9, and10 at the shell recessor depOt.

The proeedur-eat ~‘ Mis-sJire“ beingcalled will be asfollows

Electric Firing.—Aftei’ a pauseof tlu’ec minutes4 arid 5 elevatethe gun sufficiently for the lock to be reachedfrom the gun floor,2 insertsa now tube. Should a misslire again result a changewillbe made to percussionfiring, after afurther pauseof three minutes,os follows :~

4 and 5 again elevate, 2 removes the electric lock, 3 inserts

percussionlock andtubo, hookslanyardandstandsreadyto -fire.

No’rs.—Whon changing from percussion to electric firing, a

similar peocedureis followed,

To CEASE Fiimiso AND REPLACE STORES.

The gun is left depi-essedby 4 arid 5, andthestoresarereplacedby thenumberswho broughtthem up.

The detachmentthen utile in at “DetachmentReam-.”

DRILL FOR 9’2-INUH B.L., MARK IX, ONBARBETTE, MARK TV, MOUNTING.

- - Gus DETACIXMENL

Time gun detachmenteon~istsof a Gun Captain, Gun Layer. andnine othergun numbers,andan additional layerfrom the00 °/~sparcIt falls in and is told off asusual,

For the duties of Gun Qaptuiu and Gnu Layer see “GarrisonArtillery Training.”

128

AMMUNITION DETAIL.

In addition to thegundetachment,the following arcrequired:—

Two numbersinside the magazine.Threenumberssupplying lifts with shell.Four numbersloadingandworking thelifts (twoat eachlift.)

To PREPARE FOR ACTION.

See“Garrison Artillery Training.”

Tue storesare broughtup asfollows from time groupstoreGun Captnin.—’-A pieco of chalk,pressuregauge and necessary

spanners.Gun Laycrs.—Sights,pistol grip, shoulderpiece,andscrew-driver.2.—Electric lock, electric tubes, tube box, pocket gun-layers,

vent-bit, u-inter, extractorlever,McMabon spanner,nut ventwrench,wrenches,breedsand firing mechanism,oil can,Russiantallow, andw~st-o, t?or drill, a drill-tribe.

3,—Percussionlock, percussiontubes, tube box and lanyard.For drill, a drill-tube.

- 4.—Brush-rammer-and-sponge,bucketfilled with water, brush.5.—l3o~cof spareparts.6 arid 8.—For drill, drill cartridgesin zinc cylinders, and car-

tridge extractor.7, 9, and 10.—Selvagce;two keys, fuze,utliversal; greasebox;

levers for working ammunitionlifts. For drill, drill shell, andshellextractor,and7 ft. lmandspike.

Theammunitionnumberwho supply lifts with shell will providethemselveswith

Brush; two keys, basefuze and plug; ten bolts, c-ye, lifting;driver, grummet; mallet, tiimman’s.

The following group storeswill be brought up, and suchothersas areconsiderednecessarylocally

Hammers,claw ... ... 1 pergroup.Clinometers ... . -. ... 1 per work.InstI-llments testing primary

- batteries ... ... . -. 1 per work.Drivers, screw ... ... 2 per work.Whistles . . ... ... 1 per group.Brooms ... ... •.. 1 pergroup.Reservoirs,compressedair ... 1 per moriuting (not required for

drill).When the storesare brought up, the Gun Captaingives “A 1,

Preparefor Actioa,” and satisfieshimself that thebuffer is properlyconnectedup, not leaking at the glands, end contains the correctamount of oil andair pressure,and that thecapsqunresareproperlysecured. When the breechis opened,lie looks to see that theboreis clear. Befoi-e firing lie seesthat thu four screws,clamping cradlebridgeare removed,and placed in the rest holes provided for thepurpose. (N.B.—Bcfore this is done, it is of theutmost importancethat the pressureis correct.) He sees that the ammunition isproperly prepared. He superintendsthe firing of an electric andapercussiontube to test firing arrangements.

The Autosight Layer,assistedwherenecessaryby the Rocking-bar Layer, fixes the sights in the gun, taking care that the

129

foresights fit correctly and that the deflection leaves of the hind.sights work easily. Ho seesthat the rocking bar and automat-icsightsfit andwork properly,that thebracketsandcarriersare firmlyattachedto the mounting,andteststheautomaticsight.

He makesthenecessaryconnections,and tests the firing circuitsby firing a tube after thebreechis closedwhenordered to do so bythe Gun Captain. He sees that thepointerfor travel-sing am-camidsafetybolt are let down.

3 removesbreechandmuzzlecovers,seesthat the control gearisoiled andin good order, andinsertsthe percussionlock if used. Heattachesthe tube box to the mounting,placing some tubesin thebox, and time remainderin a convenientposition for miso, end piace~the lanyardunderIris belt.

He opensthebreech by turning the lever with his left handandswinging it round.

When time Gun Captainimas looked through the boretime breech~vili be closedin the reversemanner.

2 attachesthe tube box and layers pocket to time mounting,placing some tubesin the box,and tire remainderin a convenientposition for use. He places the remainder of his stores iii aconvenientposition for use. Ho inserts the electric lock if used,amid makesthe necessaryconnections. When the breechis opeti lie

i~rssesthe vent bit down tile vent, examinesthe breeclm-screwandthreadsof thebreech,seesthat they am-c cleanand free from bum-rs,lubricates the threadswith a slight film of oil and smeais theobturatingpadwith Russiantallow,

As soon asthebreechis closedlie insertsan electric tube, lowerstheactuatinglever, andgives “A 1, Ready.” He then seesthat thetraversinggearis oiled andin good workingorder.

In case of percussionfiring, 3 insertsa percussiontube, lowerstheactuatinglever,hooks the lanyard and fires whenorderedto doso by the Gun Captain.

4 seesthat theelevatinggearis oiled andin good workingorderand,with 5, brings thegun to time loading position. He placesthebrush-rammer-and-sponge,the bucket filled with water, andbrush,iii rearof thebreechon the loadingstage.

5 attendsto loadingtacklewhenused.6 and 8 go to the issue hatch of thecartridge magazine,loosen

or removebandsfrom coversof cylindersif not alreadydone. Fordrill theyplacedriil cartridgesandextractorin convenientpositionsfor use.

7 goesto the right-handammunitionlift on time gnnfloor, 9 and10 go to time left-handammunitionlift on thegun floor. For drillthey placethe drill shell and extractor in convenientpositions foruse. 7 handsafuze key to 3. -

Eachnumber will report to time Gun Captain regarding any- damage or deficiency.

After each number 1mm completed his work he takes post irsfollows:—

GunCaptain, in mostconvenientposition.Gun Layers, on the sightingplatforms.2, on the right of time gun facing the breech.3, on the left of thegun facing the 1)1-cecil.4 and5 at theelevatingwlmeel.6 and8 as abovedetailed.7 and 9 at the head of the right and left ammunition lifts

respectively. -

10 at the traversingwheelor-onthe left of ? as orderçd.(9389)

130

- To LoAn.

(inn GroupCommander. Gun Captain.

“A Group Load.” “A 1

4 and5 elevatethegun if necessaryinto time loading position.3 openstire brcc-chassistedby 2 when required,amid insertsthe

loading tray whenused.2 extractsthe tube,r-imnes out time vent, and if necessaryusesthe

ventbit.If tire necessaryammunition is not on theupper shelterfloor,

7 or 9 calls up tIre foot of the lift by one whistle. On beimmganswered,lie repeatsthenatureof ammunitionrequired. Whentimetrolley hasbeenraisedto tire uppershelterfloor, theN.O.O. in chargeof time ammunitionparty at time foot of the lift soundstwo blastsonthe whistle of the speakingtulle. 7 or 9, on hearing this signal,raises the trolley to the gun floor by throwing his lever over to“Raise,” letting it return automatically.

N.B.—Tlie shell would have becir fazed in Limo shell-storebeforeplacing on the trolley.

7 or 9 then releaseswith his foot time catch securingtime trolleyto the lift, andpushesit roundin rearof time breech.

10, if necessary,traversestime gun to a convenient position forloading; -when not on the traversingwheel he will assist7 or 9 to1-un tho shell trolley in rearof thebreech.

4 and5 moving the loadings�agein rearof time bi-eeeh,3 openathebreech.2 securesthetrolley to time gun, by tIre bolt on time former and

turns time carrier so that the point of the shell is towards the gun.Time Gun Captain releasesthe catch holding time loading tray. 2,3, 4, and 6 mount on the loading stage,and rain the projectilehome,3 havingremovedthesafetypin anduncappedtime fuze.~

Time loading tray runs home with tire shell. 3 releases andreplacesit in the carrier, am-id unboits tile trolley from time gun.2 turns time can-icr to its travellingposition on the trolley.

7 (or 9) movesthetrolley to tlm~left of the gun,2 and3 extracttime cartridges and place them in the chamber, having firstremovedtime mill-board disc -from eachem-tridge.

3 thenclosestire breech. Debt-c closingtime breeelm,careshouldbe taken to remove any piecesof residue\m-hiehm would be likely tointerferewith theclosingof time breechor damagetime obturatingpad.

2 inserts an electric tribe in the vent,or 3 a percussiontube,iffiring by percussion,asbefore detailed.

The tube is never to be inserted before thebreechis properlycloseduaderanypretextwhatever.

At percussionfiring, 3 then hooksthe lanyardand standsreadyto fire. -

When all areclear of recoil, 2 givesthe word “A 1, Ready.” Atpercussionfiring 2 will not give time word “Ready” until 3 hashookedtime lanyardand is clearof recoil.

4 and 5 bring time gun to the proper elevation for the rammgeunder time ordci-sof the (iun Captainor Gun Layeraccording to thecaseemployed.

The trolley is removed to time lift from whelm it wasbroughtby7 or 9, and, ivimen time nminunitio~mfor the next remind arrives at thegun floor, is run up to time lift, to which it is securedby 7 or 9engagingtime catch with his foot; he then lowers it to the upper

181

shelterfloor as follows :—He pressesdowntire 8101)with his foot, andthrows the lever over to “Lower.” W’heu tlmo lift comesto restonthe fix-st floor, ime will releasetime stop witim his -foot, andbringhackthe lever to the vertical position.

Ammunition is brought up alternatelyfromn the migbt and leftlifts, unlessonelift is disabled.

N.B.—One trohiey should always ho omm the gun floor-, imr easeof

time hmydranhicgearbeingdisabled,n-sitis reqmmim-edfor loading.

To LAY AND Ficri.

See“ GarrisonArtillery Traimmimmg”

The normalmethod of firing is by electricity.The normal meansof laying is by rocking-bar sigimt at long

ranges,and by automaticsight when the tam-get is within etlectiv~autosightrange.

Gun sights will not be used unless the other sights areout offactionor not fitted. Time tangentsight may have to be removedbeforefiring.

10 traverses,and 4 and5 elevate,if requiredto assist.CaseI (TangentElevatiomr)—Rocking-barLayer laysfor line and

traverses;he alsolaysfor elevation,directing the Autosigimt Layerto elevateor depress,as required,and,fires.

Autosiglmt Layem-elevatesor depresses,asorderedby time itoekilig-

bar Layer.Autosiglr(s.—Rocking-barLayer lays for line and traverses,and,

if orderedto do so, ob~em-vesand acquaimmts Aatosiglmt Layer withhis observations.

Autosight Layer lays for elevation, elevatesamid firem, amid, ifoi-dei-cd to do so, corm-ects by meansof theerror of day drum.

Case II.—Autd~ight Layer lays for line, ti-averses mmd fires, byorderof time Gun Captain,who givestheorderat “err.”

Tire Rocking~bimi-Layerreadsdial (whendial is on the mmionimtiimg),putson elevation,andgives “ or-i ~‘ when the gunis correctly layed.

Case III.—Autosight Layer reads training dial (when on tue

mounting),andtraverses.

Roeking~barLayerreadsrangedial, and elevates. -

3 fires by percussion,by orderof the Gun Captain, who givesthe om-derat “on” from both layers.

- AFTER FI1mIN(L -

- As soorm irs the gamm is fir-ed, time Omiri Captain removes tire firingplug if used; 4 and 5 bring the gull into the loading positiommwithout further word of command. At pem-cussiomifixing, 3 unhiooksthelanyard; 3, assistedby 2 if necessary,openstime breech; 4 laystire spongecloth over Limo mnnsimronmhead,lie mviii mot wring it outbut place it on as wet as possible; 2 extractsthe old tube andattendsto time vent. The gun will be at oncereloaded.

To UNLOAD AT DRILL.

The gun is unloadedby time numberswimo loaded,7 supplyiugtime cartridgo andshell extractor-s. 3 seesthat the loading tm-ny is inthe properposit-ion to protecttime threadsof time breech. -

N.B.—Projcctilcswill notbeloweredon time trolleys, but by means

of thederrick andwinch, -

(9389)

132

- To LOAD imY DERRICK. -

‘l’bis method is only used when the hydraulic lifts am-c not‘woi-king. Thetrolley kept on thegunfloor- is usedfor theshell.

Fon ACTION, U&oria Covsa,Mmssr-umu,CEASS Fummxe, REPLACEMENT

or CASUALTiES.

See”GarrisonArtillery Training.”Tire positionsundercoverar-c as follows2, 4, AutosightLayer and.Gun Captainon time right of thrc gun.3, 5,andRocking-barLayeron the left of time gun.6 and8 at tire cartridgeliateim.7, 9, and10 at the ammunitionlifts.

The procedureat “Mrssfire” being called will beas followsElectric Firing.—After a pauseof threeminutes,4 and5 elevate

Limo gun sufficiently for the lock to be reachedfrom time gun floor-,2 insertsanew tribe. Should a missfireagain result, a changewillbe made to percussionfiring, aftera further pauseof three minutes,asfollows -

4 mmd 5 again elevate,2 removes the electric lock, 3 inserts

percussionlock andtube,hookslanyardandstandsreadyto fire.Nors—Whcn changing from percussionto electric tiring, a

sinmilimi- procedureis followed.

To CeASE Finixa AND REPLACE Srones.

Time gun is heft depressedby 4 and 5. Tire storesame replacedby thenumberswho broughtthem up.

The detachmentthen frills in at “DetachmentReam-.”

TJItTLL FOR 9~2-INCHB.L. GUNS, MARKS XAND XV ON MARK V MOUNTING.

The detaehmethconsistsof a Gun Captain, Gun Layer, amidten other gun numbers, and an additional Gun Layer from time50 per cent. spare. It falls in andis told oil in theusualmanner.

For the dutiesof Gun Captainand Gun Layer-, see “GarrisonArtillery Training.”

AMMUNm’rIoN SuppLy.

Cartridgesare supplied from recesses(or depotsif required) byhand to the gun. Supply may also be made to time level of theemplacementby lift.

Pro3ectmlesare supplied from recessesin the emplacementmmdfrom depOts,which should be arrangedround the emplacemeut,andthenceby hydraulicgear,‘when fitted, to the gum-i platform. Supplymay alsobemadeto time level of theemplacementby lift. -

The normal supplyof ammunition,will be from time recessesordepOts, In this case8 and 8 supply cartrid,ies to 3 and 5 on grinplatform, 10 and 11 load a projectile on p~ojeetilebarrow,Ii fuzesit (if necessary)and takes it to time front hoist or wider derrick

- 133

batch, 7 arid 9 proceed to front hoist arid raise projectiles onto trolleys, 7 attending to the control lever of hoist, 9 to thetm-ohloys. 7 is responsiblethat time sti-aps are properly pinned upbeforelowering the Imoist.

Wimen supply is fr-em lifts, 6, 7, 8 and 9 work in a similarmammmmer,10 and 11 roil shell from tIme lift on to barrow,removegrumnmets,if not alreadydomme, andfuze shell andtakethenm to fronthoist

Lids of eylimmdcrs will be m-emoved at bottom of cartridge liftbeforesoimdirrg up.

Empties will be stackedby 6 and 8 without obstructing tireworkingnumbersat time gum-i.

As the i-eeessesommly hold a hinritud miunmbcr of roumids it will beadvisablenot to i-edt-ice time total for each gun below six, but whenthis poinmt hasbeenreacimedto changeto lift supply. - -

In addition to ~lmeabovedetail, mm-heir gumfs are sei-vc-d by lifts(hircet from botim shell and cartridge stem-es,nine additional numberswill be requiredto supply andmvoi’k the lifts.

If only one lift is provided, three of these numbersshould bedetailedto carry cartridges in cylinders to carti-idgerecessor depOtdirect, the lift beingreservedfor slmcll only.

To Paum’.UIE TOli ACTION.

See“Garrison Artillery Training’.”

Storesate broughtup asfollows from thegroupstoic:—Gun Captain.—Apieceof chahk,key of firing plug box, pressure

gaugeNo. 1, andnecessaryspanners.Gimir Lnryers.—Sights,lock, slide box, pistol gr-ip, screw-driver,

andconvergencetable.2.—--Tubcs,tubebox, pocketgun.lmryers,vent bit, rimner, wrencimes,

breccim amid firimmg mcclmanisnr, oil can, Russian tallow, waste,spanners(buffer amid McMahon). For drill, a dr-ill tube.

3.—Pereussioalanyardand stop for usein ~oadirmg tray.

4.—Brush-rammer-and-sponge,bucket filled with water, bi-ushi,0.11(1 sponge cloth.

5.----Loadingtackle mmd box of sparepai-ts.6 ar-md 8.—Keys of cartridgeand shell recessesand of lifts (if

mmecessary). For drill, cartridges iii zinc cylinders arid cartridgeexti-actom-.

7 and 9. —Projectile harrows and brush, selvagee, two keysfuzo universal, tmvo keys basefuse and plug mm-lien required,greasebox, 10 bolts, eye, lifting, driver gi-umniet, mallet tiriman’s. Fordrill, a dr-ill slmehl am-md simehl extracton’.

10.—Elevating wheel,andassists7 and9.ll.-----Travem-singwheel,andassists‘7 and9.The following groupstoics will be brought up, and such otirer

stom-esasarcconsider-ednecessarylocallyHammer ... ... ... 1 pci- group.Climnometer ... ... .. 1 perwork.Broom .. ... ... . -. 1 per group.Extractor tube, special, box,

slide A ... ... ... 1 per2 guns.Whistle ... ‘ ... ... 1 per group.Instrument, testing, primary

batteries - -. ... . -. 1 per work.Drivem-s, screw . -. ... 2 per work.

134

Wimen time stem-es nmm-o brought up the Gun Captain gives“A 1, Prepare for Action-, amid satisfieshimself that the buffer isproperly connectedup, not leaking at time glands,and contains timecom-rcctamount of oil and air pi-essare,that the accumulator isfilled whIm liquid, andthat time capsquarcsaie properly secured.

He placeshis storesjim aconvenientposition fom- use, andwhentire breechis opened lie looks to seethat the herois clear. - - -

Ho aces timat the ammunition is properly prepared. He Sul)er-intends tire firing of an electric and aperclmssiontube to testfiringari-angements. -

The Autosiglmt Layer, assistedwhere necessaryby tire Rocking-bar Layer-, fixes the siglmts on time cradle, and seesthat they won-kand fit pro~mer1y,riud that the sight crim-riers are firmly attachedto time nrountimmg,tests autosights,makes tire necessal-yconnections,and tests time firing circuit; he examinestime lock andplaces it inposition iii the slide box 0mm the vent, rind fires a tube after tImebi-cech is closedwlmen order--ed to do so by the Gun Captain. Hoseesthat theelevatingamid traversinggearsareoiled arid in workingon-der.

3 removesthetimuzzic cover. Ho preparesto hook lammyard amidfiresa tubewhenorderedto do so by tire Gun Captain.

2 attaclmesthe tube boxes and layer’s pocket to tire mounting,placing some tubesin the tube boxes,and time remainderin a con-venient position for use. He placestime oil can, tallow and wasteon time mountingundem~thebreechon time right side andtime spannersoutsidetire sideshield. He then puts the lever of time rearhoist at“Lower.”

2 now openstime brce~hiby taking hold of the breechmechanismlever witim his right hand and pulling it towards him ire far as itwill come. Tins uniocksarid withdraws f-Inc hrccelr-screw. He their-passestime vent bit down the vent,examinestire breech-screwandthreadsof thebreech,seestimat tlmey areclean and free fmorn burrs,lubricates the threadswith a slight film of oil and smear-s tImeobturatingpad with Russiami tallow. He theninsertsa tube,pushingit weil borne,andcockstire lock if percussiontubesare used.

To close thebreech,2 takeshold of the leverwith imis left hand,and pushes it away from him with a continuous and deliberateumotron as far us it mviii go; this preparesfor electric fim’ing. Ifdifficulty is expei-icnccd in closing time breech, 5 will assist 2 toforce the lever home, but when once tine motion of closing timebreech him commencedthe lever must on no accountbe partiallydrawnbackto obtain afresim purcimase. If the lever be drawn backafter the motmon of closing time breech hascommenced,the tube ispartially extracted; any subsequentforward motion of the levertendsto damagethe tube by causing the extractor to foul thatportion of it mvhnclr pr-o~ectsfrom time vent. If the percussiontubebe bent mvithiin 09 mcii of time head, time detonating compositionis liable to be fired, resultingin apiematureexplosionof the charge.

Nom.—\Vlmcnevertine bi-eccimiseloscdwithoutinsertingatube,theextractorshould be pr--easedwell homebeforeclosing. Underno circumstancessimould time lock be snappedunlessatubeisin time vent. Should it be necessaryto easesprings,it shouldbedone gently by hand. - - -

As soon as time breech is closed2 puts over fhc contactlover- andgives “A 1, Ready.” - -

135

After tire tube is fir-cd, 2 opens the breech,rues out time vent,anti closesthebreechagain.

4 places time brushm-rnmmmcr-ammd-spongc,the bucket filled whimwater, andbruslr in i-ear of time gun. - -

5 assists theGrin Layer, hookstime hoisting tackleif not alreadyfixed, over-haulsand securesit, and passestime rummnirng cmmcl domvn to9 and 10, who make it fast to tine ivincir. -

6 amid 8 go to tire cam-tm-idge i-eeessem- lift, ammd prepareto issrmocar-tridges. For dr-ill they place drill cartridges and extractor iii

convenient positions for use.7, 9, 10, and 11 go to the slmell recess,depOt-,or lift (if supply

- is by lift), arid prepareshell for loading, i.e., cleanamid fuse tlrciu,if not already done, and renmove plugs from eyebolt hides oflyddite shell, andscrew in eyebolts. F’om- drill they p]lmce tine dr-illshell and extractor in eorrvermienmtpositiomms for use. 7 hands afuse key to 3, and puts the lever of front hoist to “Lower.” Assoon as they find out time nature of projectile to be used,they actirs previouslydetailed,andfill tire trolleys.

10 fixes time elevatingwheel, amid takespost to elevateif required.9 passesthe filled trolley over i-he rear-hoist,fixes tine travem-simmg

wired, andtakespostto traverseif required.Eneim number will report to time Gun Captainany damageor

deficiency.After each number has completed Iris won-k, he takes post as

follows :—

Gun Captainin the mostconvenientposition.Gnu Layerson time sighiting stepsin rearof time sights. -

2 on time right of time gunfacing the brcecim.3 on theheftof thegun facing tine breech.4 on the left of 2.5 on the right of 3, or at tIme loading tackle.6 and 8 on landing of staircase,outside cartridge recess,om- at

headof lift.7 and9 at front hoist-, depOt, recess,or- lift,10 and 11 at depot,recess,or lift, or at elevatingandtraversing

wimeci as ordered.

To LoAD.

~otim.—TIme gun may be loadedbetween5 degreeselevationanddepression. The Gun Captain is responsiblethat the gun isin theproperposition.

Grin Group Commander. Grin Captain.

“A Group Load.” “A 1 Load.”

2 openstime breech, then seizes the handle of control lever (Ifrearshell hoist,andlooks towardstire GunCaptain,

3 swings leadingtray roundin rearof breech.9 runs trolley round with shell over rearhoist,taking care that

time clip on simell pit shieldrestson recessin trolley.The Gun Captainnow raises his right arm as a sm~nalto 2 to

raisethe simehl, ar-rd whenhigh enough lomvers hms arm*; ~ placesthelever to “Raise,” bringing it backto the centre 3ustbeforetheshell

* In the absence of the GunCaptainthererignairwill be giren by 3.

is high cmmougln, tineim again nmovesit slowly towards “ Raise,” bm-ingimmgit at onceto centreus tin-i Gun Captainsignals “High enovgh.” Hemust be careful not to raisethe shell too fast, or time hoist tray wrllcomeviolently againsttIme loadingtray anddam-imagethe i-am andhoist.

3 i-err-moves safetypin and cap from fusewhen time projectile hasn-euchredthe loading position. (HE. sheil only). He also removeseyebolt fm-am lyddito smell, andpassesit to 9.

4 placessaturatedspongecloth over mnslnroommm hneurd, and supplieshimself with time br-ash-rammer-and-sponge,arid places tine imecn-dngairmsttine baseof time projectile; time staveis rammedby 3, 4 and5,who run forward, thus ramming home. As soon a-s time projectile ishome, 3 am-md 5 quit time raanmer stave,4 witlndraws the brush-rammen--and-sponge,dips thesponge headin water, andstandsreadyto ramthe nextround.

NoTin —-Tine spongeheadmust be thoroughly smitum-atodwith waterafter each round.

When the shell is clear- of time hoist time Gun Captainsignals“Lower” by motioning -with his hand iii a downward direction;nit this signal 2 puts tine lever to “Lower”; then rimes out tirevent-, and, if necessary,uses time vent bit. He then inserts a tube,mind at percussionfiring, cockstime lock.

6 and 8 eachwitlmdrawa cartridge from mm cylinder at the recessor depOtandsupply them to 3 and 5 whIr mihhboarddiscs removed,placing themselvesin tine mostconvenientposition to doro.

3 placesthe fir-st cartridge in the chamber,and then swings tireloading tray clear, anti at percussionfiring preparestime lanyard;5 placesin time second, then removesspongecloth, and throws itirmto thebucket.

10 and 11 supply 7 with projectiles, 9 will alwayskeepa shellovertime rearhoistwhen the latter is down (except whenthe hmingeddoorsareopemm on accountof elevationextending 70), and see thatthe trolley is properlysecured by tire clip on the shell pit shnield.Ho will alsopush round time empty trolley. Trolleys will alwaysbekeptmoving “ whir theclock.”

2, assistedby 5, then closestine breech,as previously detailed.At pcrcnrsslornfiring 3 thenhooksthelanyardmmd standsreadyto fire.

When all are clear of recoil ~ 2 puts overtine contactlever atelectric firing, standingoutside theside shield to do so, andgivestineword “A 1, Ready.” At percussionfiring 2 will not give tine word“Reudg” until 3 1mm hookedtine lanyardmmnd is clear of recoil.

At Deliberateand Group Fin-c tire circuit will not be completedat theAuto Circnmit Breakeruntil tine G.G.C. has given “ C’omnmenceFiring.” /

Nore.—At per-cussionfiring it is most essentialthat the lock becocked before closing time bm-eechi, otherwise tlmerc is greatdammgerof the tube being fir-ed prematurely owing to thepressureof time striker over theheadof time tube.

Before closing the breechcaresiicuid also be taken tom-cmove any pieces of residue which would be likely tointerfere whim tine - closing of the breech or damagetheobturatingpad.

* All numbersmust becareful to keepcheerof time lowei- elevatingmm-heel insis hnnnble to fly roundrapidly when time gina is fircd.

137

- To LoAn ur Dsrunicg.rphnismethodis olily usedwimemi the hmydm-auiielifts am-cnot wom-kirig.

On time conmnmanndby Gun Cmmptaimm “ Den-rick Loading “ 2 keysup the leverat the central position, tlmo Gumi Captainbeingrespon-sible that this is clonic. 3 placesslop iii loadingtray.

10 and 11 run time projectile omm bar-row ummdcrmrcatim tine dem-rickliateim with selvagee01 eyebolt fixed. Witln lyddite shell, eyeboltswill invariably be used. If threm-e arc simells on tire trolleys 9 runs atm-oliey tinder tine lmatcim ; 7 raisestine wiineim bm-akes,3 and 5 over~haul tine tackle, 7 assisting with tine winch Inandie. 3 passestime

lower block to 9, who hooks it itmto eyeboit or bight of selvagee;7, 10 and 11 mamm winch handle, mmmi on signal “Raise” fronm 9,hoist time smell. 9 steadiestine pi-ojeetile; 3 amid 5 linen steadyit, andswing it over time loading tray. Tine Gun Captmnimi gives “Highenough,” followed by “Lower”.; 7 raises time brake, mind 10 and 11ease off. 3 swings round time loading tray, amid 5 unhnooks tinetackle; 3 unscrewstheeyeboltor removessehvageeandpassesit to 9.Loadingthenproceedsas for hydraulic loading, after which 5 over-harm-istime tackle andswings backtime dei-i-ick.

Tine shell nnnmberswill changerounds wheim required at tirediscretionof the Gmmn Captain.

To LAY AND Func.See“ GamrisonArtillery ‘Iraining.”

Tine normal metlmod of firing is by ehectr-icity.10 elevatesand11 tn-aversesif requiredto assist.Case I. (Tangent Elevation). — Rocking-bar Layer lays for

elevation,elevatesand fires. (The GunCaptainshould, if possible,act as setter.)

Autosight Layer lays for line andtraverses,Autosiqhls.—Rocking-barLayer laysfor line andtraverses,and, if

orderedto do so, observesamid acquaimmts Autosighnt Layer- with hisobservations.

Autosight Layer hays for elevation, elevatesand fires, amid, iforderedto do so, correctsby meansof tire err-or of day dr-urn.

Case II.—Autosighmt Layer traversesandfires by order of GummCaptain,who givestheorderat “on.”

Time ltockingbar Layerreadsdial (when dial is on time mounting),puts on elevationbelow, and gives “on” when thegun is correctlyhayed.

CaseIII.—Antosiglnt Layerreadstrainingdial (whenontime mount-ing) andtraverses. Rocking-barLayeri-endsrangedial andelevates.

3 fires by order of time Gun Captain, wino gives time order at“omi” from both layers.

AFTER FIlmING.As soon as the gun is fired 3 unhmooksthe lanyard if used,2

opensthe breech. The gun will be at oncereloaded.Noms.—In order to keep the mushroomhead of time obturator

from becomingtoo hot, it will be necessaryto utmhiso everyinterval in the firing for cooling it by tine application oftlmoronglmlysaturatedcloths.

‘rime white metal disc of the obturator must be watchedfor any signsof fusion,andif tIne metalshould beginto meltthe firing ought to be suspendedfor 30 secondsin order tocool themushroomhead. Firing canthenbe resumed,but ntwould be more satisfactoryto changethe axial ventanddiscs.

131:;

To UNLoAD AT ThrILL.

Timegun is unloadedby time numberswho loaded,6 supplying tirecartridgeextractor, 7 the shell extractor; 3 seesthat time loadingtray- is in limo properposition to protecttime threadsof thebreech,

No~~.—Thoprojectilemust beremovedfrom the headingtray, andloweredby theden-rick, andnot by theiroist, aspulling the shelloatof time loadingtray onto theImoist is liable to bendthe i-am.

Foit “ACTION,” “UNDER Covuu,” “Mrssnrnn,” “ Cn~sa FIrmING,”

“REm-mAcunSET or CAsUAm’rIEs,” “DETACHMENT ReArm.”

See“GarrisonArtihlem-y Training.”

To Change Tube in Case of Missfiie.—Tlro Gun Captain gives“Stand Clear” and sees that no oneis in a position wherehe mightbe struck by the tube if It should be blown out by a hang fire~Then, without making any pause, he cocks time lock by lanyard,hooksthepercussionlanyardto tire guidebolt of link actuatinglock,andpulls to tine rearandto time right, when time lock will travel to thei-igimt, andeject time tube.

If time tube Inns not fired a now tube canbe inserted. In thecaseof electric fii-iug the spring mustbeeasedbeforeinsertiing time tube.

If tine tube Inns fired the breechwill be openedafter apauseofthree mimmutes, andchargereadjustedif necessary.

Should time secondtube fail to fire, in caseof percussionfiring,time lock mviii be- chnanged,and iii the case of electric firing, resortmviii lie made to percussionfiring underthe same precautionsasdetaileda-hove.

The positionsundercoverareas follows:2, 4, Autosight Layer andGun Captainon the right of time gun.3, 5, andReeking-barLayer on the left of time gun. -

6 and8 at cartridgelift, recess,or depot.7, 9, 10, and 11 at shell lift, recess,or depOt. All sitting or

knceiing. - -

To CEASE FIMING AND RECLACE S-ionus.

The gunis depressedabout4 degrees,and tine storesmire replacedby time numberswho brought thean up. TI-me detacimment thenfalls in mit” DetachmentRear,” -

ALTERATIONS.

Pam-a. of List ofClnanmges.

Natinm-col Change. Remarks. -

l’mira. of List Of Nature of Change. Renmarks.Changes.

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LONDON:

PItINI’liIJ FOR HIS MAJESTY’S STATIONEftY OFFICE,

BY hARRISON AND SONS, ST. MARTIN’S LANE,

pnmnrm~irsIN omimIINATIY ro ins IilAJESTY.

(Wt. 4007 4300 6 00 9389)

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ORDNANCE, B.L.,9’2 INCH, M~XANDX~’

LOCK, ~LE.CTRlC & PERCUSSION,E.’.

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WOOD, WITH GUN METALBOLT AND FLY NUTS TO HoLD3 PADS a3srso,~D,~cs.

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Bnora~TO HOLD OBTURATOR & QN~ADJUSTING Diso~ MKs.X,~1.

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CARRIAGE, GARRISON, BARBETTE, B. L., 9-2 INcH, MARK III

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SLIDE, L, BARBETTE. ,B.L 9-2 INCH, MARK flI.

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S,B/~~-,-E.B. L, 9-Z INCH,MAR~-CIII.GENERAL ARRANGEMENT OF AUTOMATIC SIGHTS LEFT HAND SIDE.

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40 AMENDMENTS TO HANDBOOKiiiii~5~

0]? TilE

92-INCH B.L. GUNS, MARKS IX, X,- AND Xv.

(LAND SEaVIOE.) -

1906.

Page123,line 3.For a gun layer” read “ two gun layers.” -

Fage123,line 4.Delete “and anadditional layer from the 50 per cent. spare.”

Page123, line 6. -

For “ gunlayer” read ‘‘ gun layers.”

Page127, line 5 from bottom.For “a gun layer” read “two gun layers.”

~ Page127, line 4 from bottom.

1’, Delete‘‘ andan additionallayer from the 50 per cent. spate.”

Page127, line 2 from bottom. -

For “gun layer” read “gun layers.” -

~ Page132,line 28.

~ For “a gun layer” read “two gun layers.”

Page132, line 29.Delete“ andan additionalgun layerfrom the50 pci- cent. spare.”

Page132, line 31.For “ gun layer” i-cad “ gun layeis.” -

Page133, line 29. - -

Delete ‘‘ rimer.”

Page134, line 5.Delete I~capsquarcsareproperlysecured,” aiid add “ stopvalve is

opei1.,,*

l’age 134. -

Addnoteat bottom of page:—

In caseof damogeto the accuniulatoi’or pipe,closethestopvalve,”

Page135, line 1.

Delete ‘‘ runes out the vent,” andinsert ‘‘looks through thevent,andif it is not clearusestheventbit fiom the front.”

(Wt. 887~ 4375 7 I 07—li & S 1131)

2

Page135, line 20.Aflei- “rear hoist” delete comma, and insert full stop,thenbegin

a new line :—“ 11 fixes the traversing wheel,andtakes post totraverseif required.”

Page135, last paragraph.

Delete from “The Gun O~~ptain”to“high enough,”line 2, page136, and substit,~te:—“ rJ~lIeGun Captain now gives the order

Raise,’ and when the shell is high enough gives the eider‘High Enough’; 2 placesthe lever to ‘ Raise,’ bi-inging it backto the centrejust before theshell is high enough, then againmovesit slowly toward ‘ Raise,’ bringing it at onceto centreonthe Gun Captain’sos-der‘Thigh Enough.’”

Page136, line 8.Delete “placessatut-atedspongecloth overmushroomhead,and.”

Page136, line 27.Place full stop after “second,” anddelete “then removessponge.

cloth, andthrows it into thebucket.”

Page136,line 34.Delete“with,” and insert “ against.”

Page136, Note.

Delete “ All,” and insert “ Theshell,” and in the same line, after“wheel” insert “when laying by CaseI or autosights.”

Page137, line 24.

After “ electricity “ add “asterisk,” and inses-t note at bottom ofpage

“~ Whenfiring by pcrcusswnthe ‘A’ lead shouldbedetachedfrom thelock,asit is liableto causea niis~flre.” -

Page138, line ii.

Delete from “The Gun Cuptain” to “ as detailedabove,” line 25,andsubstitute:—“ Tue (JunCaptaingives‘Stand Clear,’ andseesthat no oneis in a position wherehe might be struck by thetube if it should be blown out by a hangflre; then, withoutmaking anypause,No. 3 cocksthe lock, hooks the lanyard totheguidebolt of ‘link actuatinglock,’ and,keepingclearof thevent,pulls to the u-ear and to the right, when the lock willtravel to the i-ight~’and eject the tube. No. 2 or the nearestnumberpicksup thetube andshowsit to theGun Captain,whoseeswhetherit is fired or not.

If the tube has flied the breech will be opened after apauseof 3 minutes,and the chargere-adjustedif necessary.

if the tube has not fired, the Gun Captain orders No. 2 toinsertanew tube. No. 2 will insei-ta new tube. (In the caseof electric firing the spring must be easedby Nos. 2 and3beforethe tube is inserted.) No. 2 will then pushthe lock tothe left, auid, when all are clear of the recoil, will give theword ‘A 1 Ready.’

Shouldtherebe a secondmisshire,the sameprocedurewilt becarriedout except that if it is agaimi the tube which has notfired, percussionfiring will be resortedto; andin the caseof asecondmissfire at 11ercus~~onfiring, the lock will bn changed.”

Amendmentto Handbookof the 9-2-inchB.L. Guns,Marks IX, X, andXV, 1906.

~ Pages95, 107, and 113, RangeTablesfor 9~2-inchB.L., Murks U( andX guns (Compositefull chai.ges),“ Muzzle vi1ocity 2,613 fs.”should read “ ‘2,700 f.s.”

(Wt. 5680 4000 6 I 07—lI & S 1690)—S

a-

40w-o-C’s

AMENDMENTS TO HANDBOOK

or TImE

92-inch B.L. Guns, Marks IX, X, and Xv.(LAND SERVICE), 1906.

Page3.—Afterline 13, insei-t— -

“Position of centre of 1576.inchesfrom face lG-t5.inchcs from facagravity(withoutbreech of breech of breech.”mechanism)

Line 14, after “ weight” ft~ses-t“nominal.’’

After line 14, insert—Weight of gun without ~- 28.tons 8.cwt. 1.qrs I 27.t-ons19.ewL 0.qrs’

breechmechanism

Page23.—Inse,-tthefollowin5

’ two (clues

PAIITICULAIIS ov B.L. 9’2-xNcl[ MARK Ill BARBETTE MOUETTNOFOR

LIFTiNG Pumu’oszs.

Weightand Centreof Gravitq of item Portions.

- s I

-ec --

Nameof main portio,,,. ~ ~ Centreci Oravit-y. Reniark,.

~0 -

~ Carriage— toiis cwts.- (left.. 0 lOt 11 inches in rear ofn- block, trunnion, centreline of trun-

with hydraulic1 nionbuffer, tright 0 181 10k inches in rear of

centre line of trun.nion

aria, loading --.. 0 Ok — —

plate, clip, front. - -. 0 ilk 1 I —

slide 6 2 — — 11-kinchesin rearofpivot centreof uppel-roller path

roller ring 1 4 —Shield ... 4 9~ 42 inches from front

edgeof shield

Pedestal,carriage,No 4, inhalveswith2 joint plates,with bolts, eachhalf 9 2k

Racer,with traversingrack 3 Ok

Iloldfast, carriagepedestal,No.4A 4 12

P 0”(Wt. 1585 4500 6 I 07—H & S 1195) —p~-~-

2

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Amendment to Handbook for the 10-pr.Jointed B.L. Gun (Mule Equipment),1902.

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~ Delete:—Diagram facIng page35.

j Insert .‘—

in

Noru.—Thie diagram on page 287, Mountain Artillery Drill(India), 1897,shows thecorrect position of a Battery drawn

up for Inspection,the 10-pr. B.L. Gun being substituted for

the 2~5-incliR.M.L. Gumi.

(Wt. 21380 625 1 I 03—H & S 1323) ~

CARRIAGE, GARRISON, BAReETTE,B.L.92tNCI-I, MAR~W.

Plate~XV[I.

GENERAL ARRANGEMENT OF AUTOMATiC SIGHTS,_RIGHT SIDE.

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CARRIAGES,GARRISON, BARBETTE,B.L.

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GtAR, HYDRAULIC. ACCUMUL-ATOR

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CARRIAGE, GARRISON, BARBETTE,B.L.9~2INCH, MARK V. L.GENERAL ARRANGEMENT OF ROCKING BAR SIGHT.

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