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O c t . 1 9 , 1 9 4 3 . w , E . HUMPHREY 2,331,931SHUTTLECOCK MACHINEFiled Jan. 8 , 1942 8 Sheets-Sheet 7

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2 , 3 3 1 , 9 8 1c t - 1 9 , 1943- w. E . HUMPHREYSHUTTLECUCK MACHINEFiled J a n . 8 , 1942 8 Sheets-Sheet 8

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UNITED STATES PATENT OFFKIE2 . 3 8 1 . 9 8 1

SHUTTLECOCK MACHINEWalter E . Humphrey. J e a n n e t t e , P a . , a s s i g n o r t oP e n n s y l v a n i a Rubber Company, J e a n n e t t e . P a " ,a corporation o f PennsylvaniaA p p l i c a t i o n January , 1 9 4 2 , S e r i a l N o . 4 2 6 , 0 2 2

( C l . 144-2)1 Claims.This i n v e n t i o n r e l a t e s t o t h e manufacture o fbadminton s h u t t l e c o c k s , c om m o n l y c a l l e d b i r d s .S u c h a shuttlecock o r bird c o n s i s t s of a h e ad a n da vane. The head i s o f approximately c y l i n d r i

c a l form, rounded a t one end t o s u b s t a n t i a l l ys p h e r i c a l c u r v a t u r e ; i t i s approximately a n inchlong a n d a n inch a n d a quarter i n diameter; i ti s c om m o n l y formed o f cork encased i n l e a t h e r( k i d ) . The v a n e c o m m o n l y c o n s i s t s o f f e a t h e r ss e t i n c o n i c a l a s s e m b l y , s y m m e t r i c a l with r e s p e c tt o the a x i s o f t h e c y l i n d r i c a l head, s e t i n a c i rc u l a r s u c c e s s i o n o f h o l e s su nk o b l i q u e l y i n therear face of the hea d a n d n e a r the periphery o fthat c i r c u l a r rear f a c e . when the feathers h av ebeen s e t they are re-enforced a n d secured inassembled p o s i t i o n by rows o f s t i t c h i n g ; a n d ,f i n a l l y , the r e a r f a c e o f the he ad a n d thes t i t c h e d - t o g e t h e r shanks o f t h e p l a n t e d f e a t h e r sare coated with a n i n t e g r a t i n g l a c q u e r . In Lett e r s Patent No. 2 , 2 6 2 , 0 4 5 , granted November 1 1 ,1 9 4 1 , o n the a p p l i c a t i o n o f D. H. P o l l i t t , nowheld in common owner ship with the invention o ft h i s a p p l i c a t i o n , a p r o c e s s i s d e s c r i b e d o f applyi n g t o the assembled s h u t t l e c o c k t h e l a c q u e rc o a t i n g . I n t h a t p a t e n t t h e p l a n t e d f e a t h e r sthat constitute the v a n e are shown to be stitchedt o g e t h e r , i n that c a s e with t w o rows o f s t i t c h i n g .The p r e s e n t i n v e n t i o n c o n s i s t s i n machinery f o rs i n k i n g h o l e s i n t h e h e a d , and p l a n t i n g a n ds t i t c h i n g t o g e t h e r t h e f e a t h e r s t h a t m a k e u p t h evane. The b j e c t s of the invention are accuracy,s p e e d , a n d economy.In the accom p a n y i n g drawings F i g . I i s a gene r a ] a n d somewhat diagrammatic view i n s i d ee l e v a t i o n o f the machine o f t h e i n v e n t i o n . F i g .I I i s a v iew in e n d elevation a n d in v e r t i c a l s e ct i o n , o n the plane i n d i c a t e d a t IIII, F i g . I .F i g s . I I I a n d IV are f r a g m e n t a r y views in vert i c a l s e c t i o n , o n the planes III-III a n d IV--IVo f F i g . 1 1 . F i g s . V n d VI a r e fragmentary viewsi n v e r t i c a l s e c t i o n , approximately o n the planeV-V, F i g . I (minor d e p a r t u r e , i n F i g . V , f romthat . p l a n e w i l l become c l e a r i n the course o fd e s c r i p t i o n ) . The two f i g u r e s , V a nd V I , showc e r t a i n movi ng p a r t s i n s u c c e s s i v e p o s i t i o n s o fo p e r a t i o n . F i g . We s a fragmentary i e w , s h o wi n g i n s i d e e l e v a t i o n c e r t a i n c o o p e r a t i n g p a r t s i norganized p o s i t i o n a t a p a r t i c u l a r i n s t a n t i n thecourse o f operation. F i g . VII i s a view in horiz o n t a l s e c t i o n , o n t h e plane VIIVII, F i g . I .F i g . VIII s a view i n v e r t i c a l s e c t i o n , a l s o o n thep l a n e V V , F i g . Lshowin g a d d i t i o n a l machinep a r t s , omitted f rom F i g s . V a nd V I . F i g . D sa fragmentary v i e w , c o r r e s p o n d i n g t o F i g . V I I I ,b u t showing c e r t a i n moving p a r t s i n a l t e r n a t e

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p o s i t i o n s o f o p e r a t i o n . F i g . X s a view t o l a r g e rs c a l e , showi n g i n a x i a l s e c t i o n a machine partwhich i n F i g s . VIII a n d IX appears i n e l e v a t i o n .F i g s . X I , X I I , X I I I , a nd XIV, a r e fragmentaryviews t o l a r g e r s c a l e , a n d i n h o r i z o n t a l s e c t i o n ,o n the plane i n d i c a t e d a t X I - X I , F i g . V I I I ,showing c e r t a i n movable p a r t s i n s u c c e s s i v e p o s it i o n s of o p e r a t i o n . F i g s . XV n d XVI are viewsi n v e r t i c a l s e c t i o n , o n the planes XV XV n dXVI-XVI, F i g . XI. F i g . XVII s a view i n h o r iz o n t a l s e c t i o n , beneath t h e b e d - p l a t e o i t h emachine, a n d approximately o n the planeXVII-XVII, i g . I . F i g . XVIII i s a view in vert i c a l s e c t i o n , o n the plane XVIII-XVIII, F i g .XVII. F i g s . XIX , XX, a n d XXI re f ra gm e n ta ryviews i n v e r t i c a l s e c t i o n o n approximately thesame plane with F i g . XVIII, but t o s m a l l e r s c a l e ,i l l u s t r a t i n g s u c c e s s i v e p o s i t i o n s o f c e r t a i n o f t h ep a r t s s h o w n i n F i g . XVIII. F i g . XXII s a viewp a r t l y i n e l e v a t i o n a n d p a r t l y i n a x i a l s e c t i o n o fthe s h u t t l e c o c k or b i r d , the assembly o f wh osep a r t s i s e f f e c t e d i n t h e operation o f t h e machineo f t h i s i n v e n t i o n .R e f e r r i n g , f i r s t , t o F i g . XXII, t h e s h u t t l e c o c kor bird consists o f a head i and o f a vane composed o f f e a t h e r s . The feathers in conventionalm a n u f actu re are goose f e a t h e r s , c a r e f u l l y s e l e c ted a nd trimmed t o s u b s t a n t i a l i d e n t i t y . Eachfeather c o n s i s t s of a shaft 3 , bare below a n dp o i n t e d a t i t s lower e n d , and b e a r i n g i n i t s upperportion a w e b ( t o which the n u m e r a l 2 i s immed i a t e l y a p p l i e d ) t h a t e x t e n d s s y m m e t r i c a l l y fromi t s o p p o s i t e s i d e s . The head I o f c o r k , encasedi n k i d i s penetrated through i t s r e a r f a c e withh o l e s i n which the f e a t h e r s are s e t ; a n d i t w i l lbe observed that the h o l e s are s unk o b l i q u e l y t othe a x i s of the c y l i n d r i c a l head, so that the assembled f e a t h e r s , conforming approximately t oa conical surface, f o r m a n o u t w a r dly and rearwardly ?aring vane f o r t h e s h u t t l e c o c k . R e f e r r i n g t o F i g . X, a s p i n d l e 4 i s sh o w n t o ber o t a t a b l y m o u n ted i n a b e a r i n g - b l o c k 5 t h a t i sr i g i d l y mounted upon ( c f . F i g . 1 1 ) t h e b e d - p l a t e io f t h e machine. The b e d - p l a t e extends h o r ir o n t a l l y , and t h e b e a r i n g - b l o c k c a r r i e s t h e s p i nd l e i n o b l i q u e l y i n c l i n e d p o s i t i o n . The a n g l ea t which the s p i n d l e i s i n c l i n e d t o t h e v e r t i c a li s the angle a t which the f e a t h e r s o f the v aned i v e r g e f r om the v e r t i c a l , as seen i n F i g . XXII.The s p i n d l e l c a r r i e s removably a chuck I , r ec e s s e d t o r e c e i v e with snug f i t the he ad I o f as h u t t l e c o c k , a n d w h e n t h e chuck i s i n p l a c e i nt h e s p i n d l e t h e c h u c k - c a r r i e d s h u t t l e c o c k headw i l l b e i n p o s i t i o n c o a x i a l with t h e s p i n d l e . TheP l n - a n d - s o c k e t union shown i n F i g . X between

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chuck and s p i n d l e i n s u r e s p r e c i s i o n o f p o s i t i o n o ft h e chuck upon the s p i n d l e , a n d r o t a t i o n o f theassembled parts as a u n i t .F i g . I shows t h e b e d - p l a t e 6 o f t h e machine t oc a r r y , spaced apart a t a s u i t a b l e i n t e r v a l , twob e a r i n g - b l o c k s I , i n each o f which i s r o t a t a b l ym o u n t e d a s p i n d l e I ; a n d , a s here shown, eachs p i n d l e has m o u n t e d i n p l a c e u p o n i t a chuck 1 .While one chuck w i l l s u i l i c e f o r the performanceo f the i n v e n t i o n , a p l u r a l i t y o f them w i l l , a amatter o f convenience and e x p e d i t i o n , o r d i n a r i l ybe provided. The chuck with a shuttlecock h e adi n place within i t becomes a u n i t , a p p l i c a b l e t oa n d removable f r o m the t w o s p i n d l e s 4 success i v e l y . The t w o s p i n d l e s a r e equipped each witha member 3 o f a bevel-gear d r i v e , a n d compani o n a n d complementary me m b e r s 3 a r e bo r ne bya shaft I 0 . I t i s manifest that by t h e pin-andsocket connection between ch uck a nd s p i n d l e , achuck I r e m o v e d f r o m o n e spindle may be a pp l i e d t o t h e o t h e r with p r e c i s i o n o f placementi n the matter o f angular p o s i t i o n with r e s p e c t t othe a x i s o f t u r n i n g ; a nd t h a t , by d u p l i c a t i o n i ndimension o f the t w o bevel-gear d r i v e s , the turni n g o f shaft i i w i l l e f f e c t simultaneous turning o ft h e two s p i n d l e s through e q u a l r a n g e s .A block I i guided between wa y s I2 i s r e c i p r oc a b l e u p o n the bed-plate 6 ; a n d m e a n s f o r e f f e c ti n g r e c i p r o c a t i o n through a predeterminedrange, a n d i n co-ordination with the m o v e m e n t so f other p a r t s o f the machine, are i n F i g . I Is h o w n i n the f o rm o f a . f l u i d p r e s s u r e c y l i n d e r I I ,with the stem l l o f wh ose p i s t o n the block I I i sr i g i d l y connected. On the block H a m o t o r i 5i s m o u nt e d , a n d the parts are s o positioned t h a t ,i n the r e c i p r o c a t i o n o f b l o c k H, t h e mot o r i sbrought t o p o s i t i o n d i r e c t l y above t h e s p i n d l e 5o n the right ( F i g . I ) a n d w i t hd r a w n f r o m suchp o s i t i o n . In the block I I a v e r t i c a l l y extendi n g slideway i s formed, a n d i n t h i s slideway as l i d e I 6 i s r e c i p r o c a b l e ( F i g . I I I ) . F r o m s l i d ei t extends an arm I I that carries rotatably ad r i l l l 8 . The d r i l l i s aligned with the d r i v e nshaft o f m o t o r l 5 a n d i s connected with them o t o r shaft b y an e x t e n s i b l e connection. Them o v e m e n t o f the s l i d e I 6 i n i t s slideway i s cont r o l l e d b y a cam l 9 b o r n e b y a shaft 23 that engages the lo wer e nd o f the s l i d e , a n d the cam l 9s h i f t s the s l i d e d o w n w a r d a g a i n s t the r e s i s t a n c eo f a spring 2 | . The rotation o f the cam I 9 i sco~ordinated with the operation o f other machine p a r t s , as hereinafter w i l l appear.The part s are so o r ga niz ed t h a t , when a shutt l e c o c k hea d has been s e t i n a chuck I a n d thechuck m o u n ted on t h e s p i n d l e I t o t h e r i g h t( F i g . I ) , t h e advance o f t h e b l o c k H from r i g h tt o l e f t ( F i g . I I ) w i l l b r i n g t h e d r i l l l 3 p r e c i s e l yt o p o s i t i o n f o r d r i l l i n g i n the seated hea d a h o l ef o r a f e a t h e r . When t h i s advance has been e ff e c t e d the turning o f cam l 9 e f f e c t s the descento f the d r i l l I i i (which, i t w i l l be understood,d r i v e n by m o t o r I 5 , i s i n r o t a t i o n ) a n d the d r i l li n g o f the d e s i r e d h o l e i n the s h u t t l e c o c k head.Furthermore, block l l continuing i n t h e a dvanced p o s i t i o n s h o w n i n F i g . I I , a n d the turni n g o f s h a f t I l l being rendered i n t e r m i t t e n t a ndthe'r ange o f turning being c o n t r o l l e d , a n d camo p e r a t i o n b e i n g b r o u g h t i n t o c o - o r d i n a t i o n w i t hs p i n d l e t u r n i n g , i t i s manifest that a s machineoperation continues a s u c c e s s i o n o f h o l e s properl y spaced a n d i n c i r c u m f e r e n t i a l s u c c e s s i o n maybe d r i l l e d i n the s e a t e d s h u t t l e c o c k h e a d . Whent h i s has been d o n e , c o - o r d i n a t e d o p e r a t i o n o fc y l i n d e r I w i l l e i f e c t e t h e r e t r a c t i o n o f b l o c k i i .The chuck t h a t c a r r i e s t h e s h u t t l e c o c k h e a d , n o w

a s s a a s id r i l l e d w i t h t h e h o l e s f o r t h e f e a t h e r s , m a y thenb e r a i s e d manually from t h e s p i n d l e I t o t h e r i g h t( F i g . I ) a n d m o u n t e d o n t h e s p i n d l e t o the l e f t .And t w i l l be p a r t i c u l a r l y re mar ke d t h a t , i n con6 sequence o f the pin-and-socket u n i on o f chuckt o s p i n d l e , t h e p r e v i o u s l y d r i l l e d h o l e s i n t h ehead do not come t o p l a c e a t haphazard, but i nde?nite space r e l a t i o n s h i p t o other machinep a r t s , a n d , m o r e p a r t i c u l a r l y , t o t h o s e machine1 0 D a r t s next t o be d e s c r i b e d .Adjacent t h e s p i n d l e l t o the l e f t ( F i g . I ) thet a b l e 6 c a r r i e s a slideway 2 2 i n w h i ch a s l i d e 23i s v e r t i c a l l y r e c i p r o c a b l e ( o f . F i g s . V , V I , V I I andV I I I ) . R e c i p r o c a t i o n o f s l i d e 2 3 i s e f f e c t e d by

1 5 the r o t a t i o n o f a shaft 2 | made f f e c t i v e througha c rank- dis k 2 5 a n d a . link 2 8 . The l i d e 23 carr i e s a clamp which a s the s l i d e r e c i p r o c a t e s c l o s e sa n d opens, t o g rasp a f e a t h e r , t o plant i t i n ap r e v i o u s l y d r i l l e d h o l e i n the head, a n d t o r e2 0 l e a s e the planted f e a t h e r that the c y c l e o f operat i o n may progress.The clamp c o n s i s t s o f t w o mem be rs, o ne o fw h i c h , t h e m e m b e r 2 1 , i s r i g i d l y c a r r i e d u p o np o s t s 2 9 by the s l i d e 2 3 , a n d the o t h e r , the mem2 5 her 2 8 , i s p i v o t a l l y bo r ne by member 2 1 o n thep i n 3 | ) . The p i v o t e d m e m b e r 2 3 o f the clamp

i s extended, so that i t b ec o m e s a lever o f the?rst k i n d ; a n d the r i g i d l y b o r n e member 2 1 a n dt h e p i v o t e d m e m b e r 2 3 t o g e t h e r c o o p e r a t e , c l o s3 n ing a n d opening with the movement of a pair o f

s c i s s o r s . A spring 3 | tends constantly t o o p e nt h e c l a m p . C l o s i n g ( a g a i n s t t h e t e n s i o n o fs p r i n g 3 | ) i s e f f e c t e d by a l e v e r 2 2 which i s i nt e r m i t t e n t l y swung c o u n t e r c l o c k w i s e ( F i g s . V , V I ,a nd V I I I ) i n i t s p i v o t bearing 3 3 by the advanceo f a cam 3 4 b o r n e b y the turning shaft 2 0 . Them o r e d e t a i l e d structure o f the l e v e r 3 2 w i l l beunderstood o n compari ng F i g s . 1 , VII a n d V I I I .A p i n d l e 3 6 i s r o t a t a b l e i n the bearing 3 3 ; with

4 0 t h i s s p i n d l e , at o n e end, the lever arm that bearsthe n u m e ra l 3 2 i s i n t e g r a l l y united: a n d with i ta t the other end the w o r k - a r m 3 1 o f the clampc o n t r o l l i n g l e v e r i s i n t e g r a l l y u n i t e d ; ( t h o u g hwith p r o v i s i o n f o r adjustment, a s the drawings4 . . s h o w ) .

The operation o f the s e v e r a l m o v i n g p a r t s o fthe machi ne i s a step-by-step o p e r a t i o n , and, a sw i l l p r e s e n t l y appear, the i n t e r m i t t e n t m o v e m e n to f each part s co-ordinated with the m o v e m e n t s5 " o f the o t h e r p a r t s . Referring t o F i g . V I I I , i tw i l l be understood that the crank-disk 2 5 i s a tt h e m o m e n t a t r e s t , with t h e s l i d e - b o r n e clamp2 1 , 2 8 i n p o s i t i o n t o b e opened f o r the r e c e p t i o n

_ o f a f e a t h e r . While the clam p i s at r e s t i n such5 " p o s i t i o n , t h e turning s h a f t 2 3 c a r r i e s t h e ca m 3 4from t h e p o s i t i o n i n which t i s sh o w n n F i g . VIII

i n t o t h e p o s i t i o n sh o w n i n F i g . V , a n d i n c o n s equence the l e v e r 3 2 swings c l o c k w i s e (underg r a v i t y ) , and t h e c l a m p , r e l e a s e d t o t h e e f f e c t o f

5 " spring 3 , o p e n s . Rotation o f the cam 4 c o n t i nu i n g f rom t h e p o s i t i o n sh o w n i n F i g . V t o t h a t.shown i n F i g . V I I , t h e l e v e r i s swung c o u n t e rc l o c k w i s e , c l o s i n g t h e clamp a g a i n . As h e clamp6 5 c l o s e s , the crank-disk 2 3 i s s e t i n c l o c k w i s e r o t a

t i o n , r a i s i n g t h e s l i d e 2 3 t o i t s upper i m i t ( c f . t h ef u l l - l i n e p o s i t i o n i n F i g . VI), a n d e i f e c t i n g i t s d e s c e n t ( t h a t i s t o s a y , through t h e p o s i t i o nsh o w n i n F i g . V) t o t h e p o s i t i o n sh o w n i n broken7 0 l i n e s 2 1 0 , 2 3 a i n F i g . V I . A s , h o w e v e r , t h e s l i d eb o r n e clamp approaches i t s l o w e r l i m i t ( t h e

broken-line p o s i t i o n of F i g . VI) the l e v e r arm ft h e c l a m p i n g member 2 3 , d e s c e n d i n g , p a s s e s b eyond t h e r e s t r a i n t o f l e v e r 3 2 , whereupon t h e7 5 s p r i n g 3 becomes e f f e c t i v e t o open t h e c l a m p ,

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2 , 8 8 1 , 9 8 1while t h e l e v e r 8 2 (from which the clamp has e sc a p e d ) c o n t i n u e s i n c l a m p - c l o s i n g p o s i t i o n .The eng agement o f t h e l e v e r 8 2 , 8 1 with t h eclamping m e m b e r 2 8 i s not immediate, but i se f f e c t e d through a T-shaped block 8 8 that s p i voted by o ne extremity o f i t s cross-arm t o the l ever arm 8 1 , a n d that bears by the o p p o s i t e extremity o f i t s cross-arm ( F i g . V) u p o n the l e v e ra r m e x t e n s i o n o f clamping m e m b e r 2 8 . The stemo f the T-shaped b l o c k , by abutment u p o n t h el e v e r arm 8 1 , l i m i t s the counter-clockwise tur ni n g o f the b l o c k under g r a v i t y . A t o p 3 1 a , borneby a n d extending f r o m l e v e r a r m 8 1 , l i m i t s thec l o c k w i s e turning o f b l o c k 8 8 and p r e v e n t s i tf r o m swinging t o o f a r u nd e r the momentum o fo p e r a t i o n . W h e n , i n t h e d e s c e n t o f s l i d e 2 3 , t h elever-arm extension o f clamping m e m b e r 2 8 haspassed below the a bu tment o f b l o c k 3 8 u p o n i t ,the spring 8 | i s e f f e c t i v e t o open the clamp, a ss h o w n in dotted l i n e s i n F i g . V I . When n c o n -t i n u e d o p e r a t i o n t h e clamping m e m b e r r i s e sa g a i n , t h e p a r t s b e i n g i n t h e p o s i t i o n shown i nF i g . VIa, the upper e n d 28b o f the l e v e r a r m o fclamping member 2 8 beers f r om beneath u p o nthe cross-ar m o f the T-shaped block a n d turnsthe block c l o c k w i s e . In the continued r i s e o ft h e s l i d e 2 3 t h e eng agement o f t h e a s c e n d i n gend o f the pivoted clamp m e m b e r 2 8 with thethen u p wa rdly i n c l i n e d nether edge o f the c r o s sarm operates t o swing clamp m e m b e r 2 8 i n t oc l a m p - c l o s i n g p o s i t i o n . Note i n F i g . V I I I t h ep o s i t i o n o f the b l o c k 8 8 a nd o f the clamp.The o r d e r e d o p e n i n g and c l o s i n g o f t h e clamp2 1 , 2 8 i s r e l a t e d both t o me a n s f o r s u s t a i n i n gt h e f e a t h e r i n p o s i t i o n t o be taken by t h e c l a m p ,a n d t o m e a n s f o r bringing a shuttlecock hea d t op o s i t i o n f o r the r e c e p t i o n o f a f e a t h e r .As s h o w n in F i g s . I a n d V I I , a standard 8 8 i sborne u p o n the t a b l e 8 a n d s r e c i p r o c a b l e betweenw a y s 4 8 . The standard a f f o r d s a seat i n whicha feather may be s e t , point d o w n , a n d a s e a tthat w i l l a l l o w the ready removal o f t h e f e a t h e r .Conveniently, the standard c a r r i e s a c l i p i n thef o r m o f t w o f i n g e r s 4 i a n d 4 2 that extend f r o mi t s upper end a n d i n the d i r e c t i o n o f r e c i p r o c at i o n . O ne f i n g e r ( 4 ) i s i n t e g r a l l y home by thestandard; the other ( 4 2 ) i s p i v o t e d a t i t s b a s a len d t o the standard, a n d a t i t s d i s t a l en d i s a dv a n t a g e o u s l y p r o v i d e d with a v e r t i c a l l y extendi n g notch 4 3 , adequate t o accommodate with snugthou gh not t i g h t ? t the shaft o f a f e a t h e r . Thep i v o t e d ?n ger s , by a l i g h t s p r i n g 4 4 , h e l d c l o s e du p o n the r i g i d ?nger. In the o r i ? c e formed bythe notch 4 3 i n the f i n g e r 4 2 a n d the opposedplane f a c e of f i n g e r 4 i the f e a t h e r s one by o nea r e manually s e t , v e r t i c a l l y from a b o v e . F i g s . Ia n d VII sh o w the p a r t s i n p o s i t i o n f o r i n s e r t i n ga f e a t h e r . This i s done, a n d i n F i g . VII the shaftl o t a feather i s indicated i n p l a c e between the? n g e r s . F i g . I c l e a r l y shows t h e f e a t h e r i n p l a c e ,engaged a t i t s t i p , w h i l e throughout t h e g r e a t e rpart o f i t s extent t stands f r e e above the holdingf i n g e r s .A feather i s so p l a c e d , a n d t h e r e a f t e r , i n theordered o p e r a t i o n o f t h e machine, t h e standard88 advances i n r i g h t - t o - l e f t t r a v e r s e , a s i n d icated in F i g . VII b y a n a r r o w, a n d i n s o doingb r i n g s the f e a t h e r t h a t i t b e a r s i n t o p o s i t i o n b etween t h e clamping members 2 1 , 2 8 , which a tthat moment stand open and a p a r t . C l o s i n g o fthe clamp 2 1 , 2 8 f o l l o w s . Already i t has beenexplained t h a t a f t e r t h e c l o s i n g o f t h e clampingm em be rs the s l i d e that c a r r i e s them r i s e s , a n din t h i s r i s e o f the s l i d e 2 3 , the f e a t h e r , n l o wclamped between members 2 1 , 2 8 , i s r a i s e d from

10

20

i s )

5 0

( i i

3i t s s e a t b e t w e e n ? n g e r s l l , 4 2 . T h e r e u p o n , t h es t a n d a r d 2 8 r e c e d e s , l e a v i n g t h e w a y c l e a r f o rt h e d e s c e n t o f t h e s l i d e a nd i t s b u r d e n .R e c i p r o c a t i o n i s g i v e n t o s t a n d a r d 8 8 by t h eo s c i l l a t i o n of a shaft 48 ( F i g . XVIII) The shaft4 beers i n t e g r a l l y t w o a r m s 48 a n d 4 1 ( c f . F i g . I )A p r i n g 4 8 , a c t i n g u p o n a r m 4 1 , maintains thea r m 48 i n bearing ab utme nt u p o n a cam i s k 48borne by s h a f t 2 8 . As the c a m d i s k t u r n s thes t a n d a r d 8 8 r e c i p r o c a t e s : and by o r g a n i z a t i o no f the i n s t r u m e n t a l i t i e s d e s c r i b e d t h e r e c i p r o c at i o n o f t h e standard i s synchronized with ther e c i p r o c a t i o n o f s l i d e 2 8 a nd t h e opening a ndc l o s i n g o f t h e clamp 2 1 , 2 8 .T he s p i n d l e 4 t o the l e f t ( F i g . I ) i s s o org a ni z e d that when a chuck 1 bearing a shuttlecockhead i a f t e r placement u p o n t h e s p i n d l e 4 t othe r i g h t a n d a f t e r the formation i n the he ado f a c i r c u l a r s u c c e s s i o n o f d r i l l - h o l e s , i s re mo ve df r o m the s p i n d l e t o the r i g h t a n d m o u n t e d u p o nthe s p i n d l e t o t h e l e f t , one o f the d r i l l - h o l e s o ft h e s u c c e s s i o n w i l l be p o s i t i o n e d p r e c i s e l y a nde x a c t l y beneath a f e a t h e r w h e n held i n p o s i t i o nby t h e clamping members 2 1 , 2 8 ; t h e t u r n i n g o fthe shaft i 8 i s a n n t e r m i t t e n t , s t e p - b y - s t e p turni n g , a nd the range o f turning a t each s t e p i s prec i s e l y t h a t r e q u i r e d t o s h i f t t h e h e a d , whetherborne by the s p i n d l e t o the r i g h t ( t h a t a s u c c e ss i o n o f h o l e s may be d r i l l e d i n i t ) or by the s p i nd l e t o the l e f t (that a succession o f feathers mayb e s e t i n the p r e v i o u s l y d r i l l e d h o l e s ) throught h e angular i n t e r v a l between s u c c e s s i v e f e a t h e rr e c e i v i n g h o l e s i n the head. And n the i n t e r v a l so f r e s t , between t h e s u c c e s s i v e s t e p s o f t u r n i n go f s h a f t I l l , the i n s t r u m e n t a l i t i e s a l r e a d y d es c r i b e d a c t , t o s e t the f e a t h e r s i n t h e h e a d . Insequence u p o n the advance o f the chuck-bornehea d t o a p o s i t i o n i n which a n un?lled hole i si n alignment with a feather held i n the clamp2 1 , 2 8 , t h e t u r n i n g o f t h e c r a n k - d i s k 2 5 c a r r i e ss l i d e 2 8 d o w nw ard , a n d d r i v e s the clampedf e a t h e r p o i n t ? r s t i n t o t h e h o l e , thus p l a n t i n gthe feather i n the head. I t w i l l be understo odt h a t the attendant w h o i n i t i a l l y p l a c e s t h e

. feathers o n e b y o n e bet we e n the fingers 4 | , L2o r i e n t s them t o s u b s t a n t i a l l y c o r r e c t p o s i t i o n ,a n d t h a t t h e clamping members 2 1 , 2 8 have f a c e ss o shaped as t o bring the feather p r e c i s e l y t oproperly o r i e n t e d p o s i t i o n , so that the w e b o ft h e planted f e a t h e r extends i n p r e c i s e l y t h e des i r e d p l a n a r p o s i t i o n r e l a t i v e l y t o t h e c y l i n d r i c a lhead o f the s h u t t l e c o c k .When a feather has been p l a n t e d , the he adbearing the planted feather turns through a smalla n g l e , s u f f i c i e n t t o b r i n g t h e next s u c c e e d i n ghole o f the s e r i e s t o p o s i t i o n t o r e c e i v e the nextf e a t h e r ; b u t , b e f o r e t h e f e a t h e r - p l a n t i n g s l i d e2 3 descends a g a i n , other i n s t r u m e n t a l i t i e s opera t e , t o carry forward the gradual s t i t c h i n g t ogether o f the f e a t h e r s assembled i n the head.Referring t o F i g . XIHI, t h r e e rows 3 0 0 o f s t i t c hing ( t h e n u m b e r o f rows i s not e s s e n t i a l ; then u m b e r t h r e e , here shown, i s exemplary) a r eshown, e n c i r c l i n g t h e s h a f t s 3 o f t h e assembledf e a t h e r s . E a ch r o w c o n s i s t s o f t w o strands o fthread that p a s s , o n e on each i d e of each feather,a n d that are twisted together i n the i n t e r v a l sbetween the s h a f t s o f succeeding f e a t h e r s .R e f e r r i n g t o F i g . V I I I , t h r e e i d e n t i c a l t w i s t e r s5 0 are s h o w n i n v e r t i c a l stand a djacent the s p i nd l e 4 ( t h e s p i n d l e t o the l e f t , F i g . I ) a n d o n thes i d e that a f f o r d s immediate a c c e s s to the v e r t ic a l l y s t a n d i n g f e a t h e r , newly s e t by t h e l a t e s tdescent o f s l i d e 2 8 . The r e l a t i v e p o s i t i o n s i n plana r e sumciently i n d i c a t e d i n F i g . X I . ( F i g s . XI

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431V are views in h o r i z o n t a l s e c t i o n . In thesev i e w s t h e head o f t h e s h u t t l e c o c k i s , f o r simp l i c l t y , shown n p l a n , a s though t s upper u r f a c el a y i n h o r i z o n t a l p l a n e . That s u r f a c e e x t e n d si n a plane t h a t i s i n c l i n e d t o the h o r i z o n t a l , asi s i n d i c a t e d i n F i g . V I I I . In t h i s p a r t i c u l a r F i g s ,XI-XIV i l l be u n d e r s t o o d t o be dimammatic,a nd t h e showing w i l l not be m i s l e a d i n g ) . Thet h r e e t w i s t e r s a r e r o t a t a b l y m o u n t e d i n a beari n g b l o c k M ( F i g . am; t h e y a r e s e v e r a l l ye q u i p p e d w i t h g e a r - w h e e l s 5 2 ; t h e g e a r - w h e e l sa r e o f equal s i z e a n d i n the assembly are i n t e rmeshed, and h e whole s s e m b l y s d r i v e n througha gear-wheel I 3 w h i c h , borne by a s h a f t 5 4 ,meshes with t h e lowermost o f t h e g e a r wheels 5 2 .Each t w i s t e r c a r r i e s a p a i r o f n e e d l e s I I thatextend from t h e end a d j a c e n t the w o r k ( t h e l e f thand e n d , F i g s . V I I I , X I ) , and t h e n e e d l e s o feach p a i r are spaced apart a n d o n o p p o s i t e s i d e s

o f the t w i s t e r a n d remote f r o m the a x i s o f t w i s t e rr o t a t i o n . The t w o needles o f each p a i r are unequal i n length ( a s b e s t seen in F i g s . xn_-xrv)a n d each ne a r i t s f r e e en d i s provided with ane y e . The t w i s t e r i s a x i a l l y p e r f o r a t e , a s appearsin F i g . XI .The s h a f t 5 4 i s f u r t h e r equipped with a pinion5 8 , a n d p i n i o n i 6 i s o n o p p o s i t e s i d e s engagedby two r a c k s 5 1 t h a t e x t e n d v e r t i c a l l y i n p a r a ll e l i s m a n d a r e r e c i p r o c a b l e v e r t i c a l l y i n passageways p r o v i d e d f o r them i n the body o f thebearing block 5 | . As o n e or the other of thetwo r a c k s 5 1 i s i m p e l l e d p o w e r f u l l y u p w a r d t h e

t w i s t e r s are r o t a t e d , each in o n e direction o rt h e o t h e r , w h i l e the i n a c t i v e rack moves i d l yd o w nw ard .The b e a r i n g b l o c k I I a l s o r e c i p r o c a t e s i n as l i d e w a y 5 8 upon t h e b e d - p l a t e I i n r i g h t - a n dl e f t t r a v e r s e , a s seen i n F i g . VI1Ithat s t o s a y ,toward a n d a w a y from the work.On t h e s i d e o f the s p i n d l e l ( t h e s p i n d l e t ot h e l e f t . F i g . I ) o p p o s i t e t h e stand o f t w i s t e r s5 0 a y i e l d i n g anchorage O I f o r thread i s prov i d e d . From a s u i t a b l e source of supply p a i r so f strands of thread 3M are c a r r i e d f r o m r i g h tt o l e f t ( F i g . XI) through the a x i a l b o r e s o f thet w i s t e r s , and t h e threads a r e s e v e r a l l y passedthrough the e y e s o f the n e e d l e s S I . T he p a i r so f threads pus thence over the face of the seateds h u t t l e c o c k head I , a n d are secured t o theanchorage 9 . The t h r e a d s then a r e d r a w n t a u t .A t w i s t e r i n s u c c e s s i v e p o s i t i o n s o f o p e r a t i o ni s i l l u s t r a t e d i n F i g s . XI--HV; a n d , s i n c e a l lare a l i k e i n s t r u c t u r e a n d in o p e r a t i o n , the s h o wi n g o f one s e r v e s f o r a l l . Beginning with F i g .X I , t h e b e a r i n g b l o c k 5 | w i l l be understood t os t a n d i n advanced p o s i t i o n , the p o s i t i o n o f neare s t approach t o t h e w o r k . The o r g a n i z a t i o n i ssuch t h a t , w h e n t h e b e a r i n g b l o c k i s i n t h i s advaneed p o s i t i o n , t h e two n e e d l e s borne by eacht w i s t e r ? l l l i e i n h o r i z o n t a l p l a n e , t h e l o n g e re x t e n d i n g d i a m e t r i c a l l y a b o v e t h e s e a t e d s h u t t l ec o c k h e a d , and t h e s h o r t e r e x t e n d i n g t a n g e n t i a l l ywith r e s p e c t t o t h e s h u t t l e c o c k head, o r approximately s o , a nd o v e r l y i n g the head n e a r the r i m .(The t h r e e p a i r s o f n e e d l e s w i l l be understoodt o be d i s p o s e d i n t h r e e p l a n e s at i f f e r e n t h e i g h t sabove the s e a t e d h e a d . ) In v e r t i c a l l i n e betweenthe n e e d l e s o f the t h r e e p a i r s 9 . d r i l l e d hole I 0 0

l i e s exposed. In t h i s so exposed hole a feather3 i s , by t h e a c t i o n o f s l i d e 2 3 , p l a n t e d . Theb e a r i n g b l o c k 5 | then r e c e d e s ( l e f t t o r i g h t , F i g s .V I I I , XI) a n d the p a r t s ass ume the r e l a t i v e p o s it i o n s s h o w n i n F i g . X I I . One of the racks 5 1then i s d r i v e n upward, s e t t i n g t h e t w i s t e r s i nr o t a t i o n , and forming a t w i s t i n each o f t h e p a i r

1 0

1 5

2 0

2 5

3 0

3 5

40

45

50

5 5

60

65

70

7 5

9 , 8 8 1 , 9 8 1o f t h r e a d s I l l i , a s s e e n i n F i g . X I I I . The s h a f tI l l t h e n t u r n s and c a r r i e s t h e s h u t t l e c o c k headi through one s t e p o f t u r n i n g a n d b r i n g s a n e wd r i l l - h o l e l i l i t o p o s i t i o n t o r e c e i v e a f e a t h e r .The b e a r i n g b l o c k I I then advances a g a i n t o t h ep o s i t i o n s h o w n i n F i g . X I . Thus t h e c y c l e o ft w i s t e r o p e r a t i o n i s r e p e a t e d , with a s i n g l e q u a l i? c a t i o n : t h e s u c c e s s i v e t u r n i n g s o f t h e t w i s t e r sa r e e ? ' e c t e d a l t e r n a t e l y by one a n d t h e o t h e r o fthe t w o racks 5 1 . In consequence, the success i v e t w i s t l n g s a r e i n o p p o s i t e d i r e c t i o n s , a n d thec u m u l a t i v e e i f e c t a t t h e t h r e a d - s u p p l y end o ft h e t w i s t e r s , t h a t u n i d i r e c t i o n a l t u r n i n g wouldb r i n g a b o u t , i s a v o i d e d . When t h e l a s t f e a t h e rhas b e e n p l a n t e d a nd t h e t w i s t e r withdrawn t ot h e F i g . XII p o s i t i o n , t h e p a i r s o f t h r e a d s a r eremoved f r o m t h e anchorage 9 9 a n d o u t f r e ef r om t h e t w i s t e r s , a n d the ends are t i e d t og e t h e r , p a i r by p a i r .The b e a r i n g b l o c k i i i s normally h e l d by as p r i n g 9 8 a t the remote end o f i t s range o f r e

c i p r o c a t i o n u p o n the b e d - p l a t e 8 . Such i s thep o s i t i o n shown i n F i g s . I X , XII_XIV. F r o mremote p o s i t i o n i t i s i n t e r m i t t e n t l y advanced t ot h e p o s i t i o n s h o w n i n F i g s . VIII a n d X I . This se f f e c t e d by t h e r o t a t i o n o f s h a f t 2 0 , a nd t h e i ntermediation o f the c a m d i s k 5 9 a n d the l e v e r6 0 . The r a c k s 5 1 a r e i m p e l l e d upwardly a n d i na l t e r n a t i o n by t h e r o t a t i o n o f t h e same s h a f t 2 0 ,through the lntermediation o f the c a m d i s k s G Ia n d 6 2 a n d the l e v e r s B 3 a n d 6 4 . Considerat i o n o f F i g s . V I I I , XV, and XVI w i l l show t h a t ,w h i l e c a m 8 2 having engaged l e v e r 6 4 has drivenone o f the racks 5 1 upward, the r e l e a s e o f thel e v e r 6 3 from engagement by t h e correspondingcam i t has allowed the compa nion rack 5 1 t odescend d l y , i n r e s p o n s e t o t h e r o t a t i o n o f p i n i o n5 6 with which the two r a c k s a r e c o n s t a n t l ym e s h e d .

R e f e r r i n g p a r t i c u l a r l y t o F i g s . XVII-XXI, amotor 8 5 , through a g e a r - r e d u c t i o n 6 8 , s h a f t 8 1 ,and s p r o c k e t d r i v e 6 8 , d r i v e s c o n s t a n t l y t h ew h e e l 6 9 , which s i d l y mounted upon s h a f t 2 4 .The s p r o c k e t - c h a i n - d r l v e n wheel 8 9 i s the c o mmon m e m b e r o f t w o f r i c t i o n c l u t c h e s . Thedriven member I I I o f on e o f these c l u t c h e s i s i nt e g r a l l y mou nted u p o n s h a f t 2 4 , s o t h a t throught h i s f r i c t i o n c l u t c h the s h a f t 2 4 i s r o t a t e d ; a n dt h e driven member H o f the other o f t h e s e f r i ct i o n c l u t c h e s , through a p p r o p r i a t e g e a r t r a n sm i s s i o n I 2 , d r i v e s s h a f t 2 0 . A p r i n g T 3 o f adj u s t a b l e t e n s i o n g i v e s e i i i c a c y t o t h e f r i c t i o nc l u t c h e s .R o t a t i o n o f s h a f t 2 0 i m p a r t s s t e p - b y - s t e pt u r n i n g o f s h a f t H I through t h e n a r r o w angularrange a t which the h o l e s are d r i l l e d i n c i r c u l a rs u c c e s s i o n i n the s h u t t l e c o c k head. The m e a n sf o r accomplishing t h i s a r e f o u nd i n the dogs 1 4( i n t h i s i n s t a n c e two i n number, o f . F i g . V I I I )borne by s h a f t 2 0 , which a s s h a f t 2 0 t u r n s makess u c c e s s i v e p e r i o d i c en ga gement with t h e r a t c h e td i s k 1 5 b o r n e r i g i d l y by s h a f t H.To t h e end that t h e s e v e r a l o p e r a t i o n s o f t h emachine s h a l l be e f f e c t e d i n p r o p e r c o o r d i n a t i o n ,a system o f l a t c h e s i s a r r a n g e d t o r e l e a s e thes h a f t s 2 0 and M o t h e t o r q u e o f t h e r o t a t i n gc l u t c h member i l i n ordered s e q u e n c e . A latch1 8 , engaging a t o o t h 10a u p o n t h e p e r i p h e r yo f t h e c l u t c h - d i s k I l l , i s e f f e c t i v e t o h o l d s h a f t2 4 f r om t u r n i n g ; a n d two l a t c h e s a r e a l t e r n a t e l ye f f e c t i v e t o hold shaft 2 0 from tu rnin gonel a t c h , 1 8 , engaging the t e e t h "a u p o n a d i s k H o n s h a f t 2 0 , a n d the o t h e r l a t c h , 1 9 , e ng agi l ' l g t h e t e e t h 8 0 a . u p o n d i s k 8 0 i n t e g r a l l y borneby s h a f t 2 0 . A s o l e n o i d 8 5 whe n e n e r g i z e d

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2 , 3 3 1 , 9 8 1s w i n g s l a t c h 1 0 t o r e l e a s e p o s i t i o n. A l e e v e 8 | ,w i t h t o o t h e d p e r i p h e r y , i n t e g r a l l y b o r n e b y s h a f t2 0 , i s e f f e c t i v e a s shaft 20 t u r n s , t o engage al e v e r 8 2 a n d s h i f t l a t c h I I i n t o r e l e a s e p o s i t i o n ;a s l e e v e 8 3 , with toothed p e r i p h e r y , i n t e g r a l l yborne by s h a f t 2 4 , i s e f f e c t i v e as s h a f t 2 4 turnst o engage a l e v e r 24 a n d s h i f t latch I 0 i n t o r el e a s e p o s i t i o n . In e r v i c e the motor 5 d r i v e s thed i s k 6 9 c o n t i n u o u s l y , a n d t h e s e v e r a l l a t c h e s a r ei n ordered sequence actuated t o r e l e a s e thes h a f t s 2 | a n d 2 4 t o the d r i v i n g t o r q u e o f them e m b e r 8 9 , a nd then t o a r r e s t them a g a i n .

I t w i l l b e understood that the l a t c h e s l 6 a n d1 8 extend i n t h e s h a f t - a r r e s t i n g p o s i t i o n s s h o w ni n F i g . XVIII, u n t i l t i s d e s i r e d t o begin . s h u t t l ec o c k - a s s e m b l i n g o p e r a t i o n . To s t a r t t h e operat i o n a pedal switch ( n o t shown ) s pressed a n d thes o l e n o i d B 5 i s e n e r g i z e d . Thereupon the l a t c h I 6s w i n g s c o u n t e r - c l o c k w i s e , d i s e n g a g i n g t h e t o o t h11a a n d r e l e a s i n g the d i s k 1 1 . The shaft | i s r el e a s e d t o the torque o f member 6 9 a n d b e g i n s t ot u r n . At the instant the rotation o f the shaft2 | ) i s thus i n i t i a t e d , the t w i s t e r b l o c k 5 | i s i n thep o s i t i o n sh o w n i n F i g . I X .Immediately f t e r t h e s h a f t 2 0 b e g i n s t o r o t a t ethe c ams 6 | , 5 2 e f f e c t (through the swing o f a rms6 3 , 6 4 ) the r i s e o f on e rack 5 1 a n d the descent o ft h e o t h e r , with the e f f e c t that the t h r e e s e t s o fneedles are r o t a t e d , forming a t w i s t in each o ft h e t h r e e p a i r s o f threads extending f r o m t h estem o f the f e a t h e r that preparatory t o t h e o pe r a t i o n has been planted i n t h e s h u t t l e c o c k h e a d .(C ompare the p o s i t i o n s o f the threads F i g s . X11a n d X I I I . ) Next, i n the s u c c e s s i v e o p e r a t i o n s o fthe machine, o ne o f the dogs I 4 o n the r o t a t i n gs h a f t 2 | engages the ratchet-wheel I 5 , t u r n i n gt h e s h u t t l e c o c k head, a n d bringing a d r i l l - h o l ei n t o p o s i t i o n o f v e r t i c a l alignment with t h e clamp2 1 , 2 8 ( c f . the hole l ? l i n F i g . XIV). T he n thec a m 5 9 , turning with the s h a f t a n , swings the l ever 6 0 a n d advances the t w i s t e r block t o the p o s it i o n i n which the paired threads a r e spread ( F i g .XI) t o a l l o w the stem f the f e a t h e r that s nextt o be planted in the head t o descend betweenthem.While t h e s e operations are i n p r o g r e s s , the f o llowing m o v e m e n t s are e f f e c t e d in ordered succ e s s i o n : T h e l e v e r 3 2 , 2 1 swings c l o c k w i s e , a n dunder t h e s t r e s s o f s p r i n g 2 | t h e clamp 2 1 , 2 8opens ( F i g . V) then the s l i d e 29 s h i f t s i n r i g h tt o - l e f t d i r e c t i o n ( F i g . I ) , c a r r y i n g a f e a t h e r t h a thas been manually i n s e r t e d between the ?ngers4 | , 4 2 , i n t o p o s i t i o n between t h e opened clampmembers. The n t h e l e v e r 2 2 , 2 1 swings counterc l o c k w i s e , c l o s i n g the clamp u p o n t h e f e a t h e r .As t h i s s t a g e i n the operation i s r e a c h e d , thetooth 8|a o n the turning s l e e v e 8 | ( F i g . XVIII)engages a nd swings l e v e r 8 2 , l i f t i n g the l a t c h 1 8( F i g . XIX) and r e l e a s i n g s h a f t 2 4 t o t h e t o r q u eo f f r i c t i o n c l u t c h B 9 , 1 0 ; thereupon t h e s h a f t 2 4i s s e t i n r o t a t i o n , a n d the crank-disk 2 5 o n suchs h a f t , a c t i n g through l i n k 2 8 , r a i s e s t h e s l i d e 2 3 ,a n d l i f t s the clamped f e a t h e r f r o m the ?ngers4 | , 4 2 ; t h e n , through t h e o p e r a t i o n o f i n s t r um e n t a l i t i e s above d e s c r i b e d , t h e f i n g e r s r e c e d e ;a nd the s l i d e 2 3 , passing i t s upper l i m i t , mo ve sdown wa rd, p l a n t i n g the f e a t h e r i n the s h u t t l ecock head. As the clamp reaches i t s lower l i m i t' o f t r a v e l , the a r m o f cl amp member 8 p a s s e s below the a r m o f the T-shaped block 3 8 , a n d theclamp opens ( c f . b r o k e n - l i n e p o s i t i o n i n F i g . V I ) ,while the tooth 800 o n i s k I l l comes t o ab utme ntu p o n t h e l a t c h N ( F i g . X X ) , b r i n g i n g t h e s h a f t2 0 t o r s t , with t h e e f f e c t that the b e a r i n g b l o c k

10

1 5

2 0

3 0

40

50

60

65

7 0

7 5

5t i a n d t h e t w i s t e r s a r e a r r e s t e d i n r e t r a c t e d p0slum ( F i g s , 1 1 a n d XIV). The r o t a t i o n o f thecrank-disk 2 5 c o n t i n u e s , a n d c a r r i e s the o pe nclamp u p w a r d a n d a w a y from h e planted f e a t h e r ,and as the disk 25 approaches the e nd o f a comp l e t e r o t a t i o n , a n d t h e r i s i n g clamp m ov es u pw a r d f r o m t h e path o f t h e t w i s t e r n e e d l e s , thetooth 8 3 a o n the s l e e v e 83 engages a n d swings thel e v e r 8 4 , thereby r a i s i n g the l a t c h 1 9 a n d onceagain r e l e a s i n g the s h a f t 2 0 t o r o t a t i v e s t r e s s .The shaft 20 turns through a small angular range,a n d i s a r r e s t e d by t h e ab utme nt u p o n l a t c h 1 5o f t o o t h 1 1 b o f t h e d i s k 1 1 . The r o t a t i n g s h a f t2 4 i s s i m u l t a n e o u s l y a r r e s t e d ( w i t h t h e clampbearing s l i d e 2 3 returned t o i n i t i a l p o s i t i o n ) , bythe a b u tme n t u p o n l a t c h l 8 o f tooth 10a o f thed i s k 1 0 . In such r o t a t i o n o f the shaft 2 0 throughthe small angular r a n g e , the bearing block 5 |r e c e d e s f r o m t h e s h u t t l e c o c k h e a d , t o the p o s i t i o ns h o w n i n F i g s . IX a n d X11, a n d the threads ared r a w n t a u t against the stem o f the plantedf e a t h e r , a n d i n such p o s i t i o n they are ready t obe t w i s t e d . Such s the c y c l e o f the feather-assembling o p e r a t i o n s , i n which t h e s h a f t 2 0 hasturned through 1 8 0 a n d t h e s h a f t 2 4 through3 6 0 .From w h a t has been s a i d e a r l i e r , i t w i l l be u nderstood that i n the r o t a t i o n o f the shaft 2 0through 1 8 0 the d r i l l I 8 i s through the i n s t r um e n t a l i t i e s o f the cam 9 a n d the spring 2 | movedd o w n w a r d through a hole-forming s t r o k e a ndr a i s e d a g a i n .In r e p e a t i n g t h e c y c l e o f o p e r a t i o n s d e s c r i b e d ,as the c y c l e must be repeated f o r each featherthat goes i n t o the v a ne o f the s h u t t l e c o c k , thes o l e n o i d 8 5 i s again e n e r g i z e d . Again t h e l a t c h1 6 i s r e l e a s e d ; t h e s h a f t 2 | ) r o t a t e s ; t h e n e e d l e s5 5 t w i s t t h e p a i r e d t h r e a d s 3M ( F i g . X I I I ) ; t h ebearing block 5 | advances t o the p o s i t i o n s h o w ni n F i g . K1; t h e f e a t h e r i s introduced t o the clamp;and so o n .W hile the operation o f the machi ne i s arr e s t e d a t the en d o f each c y c l e , as d e s c r i b e d , i tw i l l be understood t h a t , a l t e r n a t i v e l y , t h e s o l en o i d m a y b e c o n t i n u o u s l y e n e r g i z e d ( t h e p e d a lswitch may b e h e l d i n c i r c u i t - c l o s i n g p o s i t i o n ) ,a n d t h e c y c l e s r e p e a t e d without i n t e r m i s s i o n ;that s , a f t e r the ? r s t f e a t h e r has been p l a n t e d ,a n d the otherwise f r e e ends o f threads 3M havebeen f a s t e n e d t o the m e m b e r 8 9 , the operationmay be continuous.

I t i s noteworthy t h a t t h e machine i s r e a d i l yadapted t o t h e assembly o f vanes having agreater or l e s s n u m b e r o f feathers tha n here i ll u s t r a t e d . I t i s simply necessary t o apply t o theshaft I D a ratchet-wheel 15 w h o s e teeth corres po nd i n number o the feathers i n the v a n e t o beassembled. A l l o f the s e v e r a l operations o f them ac h i n e ~ t h e d r i l l i n g o f t h e h o l e s i n the s h u t t l ecock h e a d , and t h e p l a n t i n g and s t i t c h i n g o f thefeathersare without other p r o v i s i o n o r a d j u s tm e n t p r o p e r l y c o o r d i n a t e d .Recurring ?nally t o the ?uid p r e s s u r e c y l i n d e rI 3 by which the block I I i s r e c i p r o c a t e d , i t i smanifest that a control valve may be providedw h i c h , s u b j e c t t o t h e r o t a t i o n o f s h a f t I I ) , w i l le f f e c t the e c e s s i o n o f the block I when a s h u t t l ecock head borne by t h e s p i n d l e t o t h e r i g h t ( F i g .I ) has r e c e i v e d i t s complement o f d r i l l e d h o l e s .Such e l a b o r a t i o n , h o w e v e r , i s hardly n e c e s s a r y ,s i n c e a n attendant c an r e a d i l y a t pr oper times h i f t such c o n t r o l v a l v e t o cause the block I I a tproper time t o recede a n d allow the removal o f ac o m p l e t e l y d r i l l e d h e a d , and t o advance a g a i n

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w h e n a f r e s h a nd u n d r i l l e d head has been s e ti n p l ace . .I claim as my invention:1 . In a machine f o r b u i l d i n g s h u t t l e c o c k s twos p i n d l e s r o t a t a b l y mounted i n s u i t a b l e s u p p o r t ,

me a ns f o r e i f e c t i n g s i m u l t a n e o u s t u r n i n g o f t h etwo s p i n d l e s through e q u a l a n g u l a r r a n g e s , eachs p i n d l e b e i n g adapted t o r e c e i v e a nd c a r r y ashuttlecock head, m e a n s f o r sinking a hole i n as h u t t l e o o c k head c a r r i e d by one o f s a i d s p i n d l e s ,a n d m e a n s f o r planting a feather in a hole s u n ki n a h u t t l e c o c k head c a r r i e d by the other o f s a i ds p i n d l e s .

2 . The s t r u c t u r e o f c l a i m 1 , t h e h o l e - s i n k i n gm e a n s i n c l u d i n g a d r i l l r e c i p r o c a b l e i n synchronism with s p i n d l e r o t a t i o n , a n d t h e f e a t h e rp l a n t i n g means i n c l u d i n g a clamp e c i p r o c a b l e i ns y n c h r o n i s m w i t h s p i n d l e r o t a t i o n .3 . In a machine f o r b u i l d i n g s h u t t l e c o c k g twos p i n d l e s r o t a t a b l y mounted i n s u i t a b l e s u p p o r t ,me a ns f o r e f f e c t i n g s i m u l t a n e o u s t u r n i n g 0 1 ' thetwo s p i n d l e s through e q u a l angular r a n g e s , achuck adapted t o r e c e i v e a s h u t t l e c o c k head anda p p l i c a b l e t o e i t h e r o f t h e two s p i n d l e s with t h ea x i s o f the s h u t t l e c o c k head a l i g n e d with thea x i s o i s p i n d l e r o t a t i o n a n d i n predeterminedp o s i t i o n s w i t h i n t h e range f t u r n i n g o f the e a t e dshuttlecock head u p o n such a x i s , m e a n s o r sinking a hole i n a s h u t t l e c o c k he ad when appliedt o o n e of s a i d s p i n d l e s , a n d me ns o r planting afeather in a hole s u n k n a shuttlecock hea d whena p p l i e d t o t h e o t h e r o f s a i d s p i n d l e s .

4 . In a s h u t t l e c o c k - b u i l d i n g machine, a n d i ncombination with a s e a t f o r a shuttlecock head,a feather-planter including ways, a s l i d e r ee i p r o c a b l e i n s a i d ways, a clamp borne by s a i ds l i d e , y i e l d i n g means f o r maintaining t h e clampi n normally open p o s i t i o n , a c l a m p - c l o s i n g l e v e r ,a T-shaped block pivoted by o ne arm o s a i d l e v e ra n d l i m i t e d i n p i v o t a l m o v e m e n t i n o n e d i r e ct i o n by abu tment o f the stem o i the T u p o n thel e v e r , t h e clamp throughout a o r t i o n o f i t s ranger e c i p r o c a t i o n being engaged by t h e f r e e a r m o fthe T-shaped block a n d i n f u r t h e r t r a v e r s e passi n g beyond such engagement a n d a b u t t i n g upont h e stem o f the T-shaped b l o c k a n d the clamp ni t s r e t u r n r e c i p r o c a t i o n e n g a g i n g from beneaththe f r e e arm o f the T-shaped b l o c k , a n d m e a n sf o r e ? e c t i n g c o o r d i n a t e d r e c i p r o c a t i o n 0 1 ' s a i ds l i d e a n d swing o f s a i d l e v e r .

5 . In a s h u t t l e c o c k - b u i l d i n g machi ne the comb i n a t i o n o f a s u p p o r t , a s p i n d l e r o t a t a b l ymounted i n t h e s u p p o r t , means f o r i m p a r t i n g t ot h e s p i n d l e i n t e r m i t t e n t , s t e p - b y - s t e p t u r n i n g ,r e e i p r o c a b l e f e a t h e r - p l a n t i n g mea n s arranged

1 5

2 0

25

3 0

3 5

45

adjacentto s a i d s p i n d l e , a r e c i p r o c a b l e a nd r ot a t a b l e t w i s t e r a r r a n g e d a d j a c e n t t o s a i d s p i n d l e ,and me a ns f o r e l e c t i n g o p e r a t i o n o f t h e s a i dp a r t s i n o r d e r e d s e q u e n c e , a s f o l l o w s : ( i ) turni n g o f t h e s p i n d l e , ( 2 ) f o r w a r d r e c i p r o c a t i o n o ft h e t w i s t e r , ( 3 ) d o w nw a r d and upward r e c i p r oc a t i o n o f the f e a t h e r - p l a n t i n g means, ( 4 ) r e a rw a r d r e c i p r o c a t i o n o f t h e t w i s t e r ; a n d ( 5 ) r o t at i o n o f the t w i s t e r .6 . I n s h u t t l e c o c k - b u i l d i n g machinery and i ncombination with a r o t a t a b l e s e a t f o r a s h u t t l ecock head, a t w i s t e r f o r applying a s t i t c h i n g o fthread t o the shafts o f a s u c c e s s i o n o i f e a t h e r ss e t i n a seated head, such t w i s t e r i n c l u d i n g as u p p o r t , a n a x i a l l y p e r f o r a t e r o t a t a b l e c y l i n d r i c a lbody a x i a l l y r e c i p r o ca b l e i n s a i d s u p p o r t , s a i dbody b e i n g p r o v i d e d with a p l u r a l i t y o f e y e dn e e d l e s p r o j e c t i n g l o n g i t u d i n a l l y i r o m one heado f t h e body a n d spaced a p a r t r e l a t i v e l y t o t h ea x i s o f r o t a t i o n .

' 7 . In a s h u t t l e c o c k - b u i l d i n g machine the c o mb i n a t i o n o f a s u p p o r t , two s p i n d l e s r o t a t a b l yb o r n e by s a i d s u p p o r t , me a ns f o r i m p a r t i n g t ot h e s p i n d l e s s i m u l t a n e o u s and i n t e r m i t t e n t t u r ni n g through s u c c e s s i v e predetermined a nd e q u a lr a n g e s , a s e a t f o r the hea d o f a shuttlecock a pp l i c a b l e t o a n d removable f rom e i t h e r o f t h e twos p i n d l e s i n predetermined p o s i t i o n w i t h r e s p e c tt o the range o f t u r n i n g , m e a n s r e c i p r o c a b l e aboveo ne of said spindles f o r sinking a hole i n a seateds h u t t l e c o c k h e a d , m e a n s r e c i p r o c a b l e above t h eother of s a i d s p i n d l e s f o r planting a feather i n ah o l e su nk n a e a t e d s h u t t i e c o c k , the last-namedm e a n s including a clamp a n d m e a n s f o r openinga n d c l o s i n g t h e clamp i n ordered sequence i n t h ecourse o f the r e c i p r o c a t i o n t h e r e o f , a leather carr i e r r e c i p r o c a b l e t o a n d f r o m p o s i t i o n o f cooperat i o n with s a i d feather-planting me a ns , and rot a t a b l e t h r e a d - t w i s t e r r e c i p r o c a b l e i n a planeabove the face 0 1 ' a s h u t t l e c o c k hea d seated i nthe second o f s a i d s p i n d l e s , m e a n s f o r e f f e c t i n gr e c i p r o c a t i o n o f t h e h o l e ~ s i n k i n g means d u r i n gthe period of r e s t of the s p i n d l e s , a n d m e a n s f o re ? e c t i n g m o v e m e n t o f t h e p a r t s a s s o c i a t e d withthe second o f the two s p i n d l e s during the p e r i o dof r e s t o f the s p i n d l e s in ordered sequence, a sf o l l o w s : ( 1 ) advance o f the f e a t h e r c a r r i e r a ndo f the thread t w i s t e r , ( 2 ) c l o s u r e o f t h e clampo i the f e a t h e r p l a n t e r , ( 3 ) r i s e o f the f e a t h e rp l a n t e r , ( 4 ) r e c e s s i o n o f the f e a t h e r c a r r i e r , ( 5 )d e s c e n t o f t h e f e a t h e r p l a n t e r , ( 6 ) r e c e s s i o n o ft h e t w i s t e r , ( 7 ) r o t a t i o n o f t h e t w i s t e r , and ( 8 )s u b s e q u e n t t o ( 5 ) t h e r i s e o f t h e f e a t h e r - p l a n t e r .

WALTER . HUMPHREY.