AA109, Craftsman 80& Dunlap Lathes

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Transcript of AA109, Craftsman 80& Dunlap Lathes

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    were shared. Notice that the lathe has no apron on the carriage, the leadscrew nut is fastened to theunderside of the saddle front, a simple design used by many other makers, such as Portassof Sheffield.However, despite these simple arrangements, it is as well to bear in mind that the machine sold at a verycompetitive price and (devoid of almost all equipment) was listed at just $10.95 when even a decent-quality1/4 hp motor from the Craftsman catalog was US$11.70. For the money this represented a remarkableachievement of production economics. Throughout its production life (1936--1940) the lathe was offered

    with only a very limited range of accessories: a 4-jaw chuck at $3.10, 0 Morse centres at 45c, a jack-shaftdrive pulley system for $2.45 (that gave a speed range more suitable for metal turning) and standard or"improved" pairs of adjustable motor rai ls at 50c.Continued below:

    Continued:

    By late 1937 the lathe had been given an enclosed front to the headstock casting that bothprotected the operator's hands from the drive and provided a very much better supportedspindle - though there was no back wall to the assembly and both the left and right-hand sideswere of rather slender proportions.

    For once a maker was refreshingly honest about its products limitations, stating that the lathewas: "Well suited to the model maker or man who wants to do light metal work. Not quitethe accuracy and precision of the larger machines, but plenty close enough for most work."To put the lather into perspective, although the price had now risen to $14.50 the nearestcompetitor in the Craftsman range, the newly-introduced and very well specified 6-inch Atlasclone, was $42.50 - a price that included a neat, built-on all-V-belt countershaft unit - but not amotor or set of screwcutting changewheels.In order to offer a dedicated armature-turning model, "Sherman Clark Mfg. Co. of JacksonMichigan (USA)"offered a special version with longitudinal feed by power and hand leverand, if your 109 is so equipped, the writer would be interested to hear from you. The 109

    model survived in the catalogs until 1940 when it was replaced by a more highly developedand useful version..Continued below:

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    Above: badged as a Dunlap the new-for-1941-season 109 with screwcutting and backgear. Itwas also available (left) bereft of these fitting asthe "Standard Model" 109.2046. Because the lathewas offered as a modular system it was possible tobuy the ordinary model and then add features as

    finances allowed.

    Continued:

    Marketed by Sears the new-for-1941-version of the AA109 6" x 18" at first carried thename "Dunlap", a name always used for the company's less-expensive models. By now thelathe had begun to grow up and also been given the contemporary "streamline" treatment

    Badge used on the AA

    lathe distributed throughthe Canadian SimpsonCompany

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    Listed for just the 1948 sellingseason, the Double A Company'sModel 109-2063 was identical,apart from a shorter bed and abolt-on bracket to carry the tailstockend of the leadscrew, to its lastappearance in wartime 1943.

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    Economical casting. Thesaddle on the 1941109-series was castcomplete with an apronand cross-feed screw endbracket.

    , p p p g

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    1949 6" x 12" Craftsman Model80 - usually catalogued as the109-21270

    Craftsman 80 (Model 109.21270)screwcutting changewheels andtumble reverse mechanism.

    Note how use was made of theinner-guard cover to provide anindent location for the tumble reverseselector lever - a method also used onthe English Muradlathe of the 1940s.

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    The whole of the epicyclic gear assembly. On the left the annulus gear, free to rotate on the spindle:in the middle the carrier plate keyed to the spindle with its 3 "planet" pinions: on the right, and alsofree to spin on the headstock spindle, the 3-step pulley with its attached "sun" gear.

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    The carrier plate with 6 slots in its periphery to accept thesliding block that locked it to the annulus gear

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    The annulus gear showing the internal gear teeth and, at the top, the sliding block to lock into the carrier plate

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    Two-position indent pin on the face of the headstock used to lock the annulus gear

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    A view of the mechanism in place but w ithout the annulus gear The MAZAK Planetary gears and their mounting plate

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    "Sun" gear mounted on the pulley and "Planetary" gears on the spindle

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    Above and below: a particularly fine and original Craftsman Model 80

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    AA109 branded as a Courlan - a photographic essay featuring this lathe can be found here

    E-MAIL [email protected]

    Home Machine Tool Archive Machine-tools for Sale & WantedMachine Tool Manuals Machine Tool Catalogues Belts

    Books Accessories

    AA109, 109, Craftsman 80 & Dunlap Lathes

    - also badged as Simpsonand Courlanand manufactured by the American "Double A Company" -Craftsman Home Page Model 80 & AA109, Dunlap & Companion LathesLast AA109 Model 109.21280 Early 9-inch and 12-inch Lathes

    Late-model 12-inch Lathes Craftsman 6" Lathe Mk. 1 Craftsman 6" Lathe Mk. 2

    Craftsman wood lathe conversion kit to metalSEARS Model 549-2892 8-inch Lathe (Re-badged Emco Compact 8)

    Sherman Clark Mfg. Co. of Jackson Michigan - Armature Lathe

    Craftsman-branded Wood Lathes Courlan-branded 109

    A complete set of Craftsman sales literature is available, covering all

    models produced during the period 1929 to 1966

    Should any reader have a particularly original AA109 or Model 80

    the writerwould like to feature it in the Archive

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