Us 897335

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    N o . 8 9 7 3 3 5 . PATENTED S E P T . 1 1 9 0 8 .T . R . ALMOND.DRILL CHUCK

    APPLICATION FILED DECLZQ 1 9 0 4 .

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    UNITED STATES P A T E N T O F F I C E .THOMAS . ALMOND OF YONKERS NEW ORK ASSIGNOR T O T . R . ALMONDMANUFACTURING

    COMPANY OF BROOKLYN NEW YORK A CORPORATION OF NEW YORK.DRILL-CHUCK.

    No. 8 9 7 3 3 5 . S p e c i ? c a t i o n o f L e t t e r s P a t e n t . Patented S e p t . 1 1 9 0 8 .A p p l i c a t i o n ? l e d D e c e m b e r 2 9 1 9 0 4 . e r i a l N o . 2 3 8 7 2 4 .

    T o a l l whom i t may c o n c e r n :Be t known t h a t I T n o M A s R . ALMOND ac i t i z e n o f t h e U n i t e d S t a t e s r e s i d i n g a t Dunw o o d i e Y o n k e r s l / V e s t c h e s t e r c o u n t y S t a t eo f New ork have i n v e n t e d c e r t a i n n ew andu s e f u l I m p r o v e m e n t s i n D r i l l - C h u c k s o fw h i c h t h e f o l l o w i n g i s a s p e c i ? c a t i o n .My i n v e n t i o n r e l a t e s t o c h u c k s f o r h o l d i n gd r i l l s o r o t h e r t o o l s and has f o r i t s o b j e c t t op r o v i d e a d r i l l ~ c h u c k o f t h a t c h a r a c t e r i nwhich t h e t o o l - h o l d i n g j a w s a r e t i g h t e n e d o rl o o s e n e d by t h e movement o f a n u t and i th a s been my a r t i c u l a r aim t o p r o v i d e f o r ane a s y a d j u s t m e n t o f t h e j a w s w i t h t h e a i d o fb a l l ~ b e a r i n g s c o n s t r u c t e d a s w i l l b e d e s c r i b e di n d e t a i l h e r e i n a f t e r .

    The n o v e l f e a t u r e s o f my n v e n t i o n w i l l b ep o i n t e d o u t i n t h e a p p e n d e d c l a i m s .Reference i s t o be had t o t h e a ccompanyi n g d r a w i n g s i n whichF i g u r e 1 i s a n e l e v a t i o n p a r t l y brokenaway o f my mproved d r i l l c h u c k F i g . 2 i s as e c t i o n a l e l e v a t i o n t h e r e o f a n d F i g . 3 i s ah o r i z o n t a l s e c t i o n on l i n e 33 f F i g . 2 .A n d i c a t e s t h e customary shank which sadapted t o f i t i n t o t h e r e c e s s a t one e n d o f t h ec h u c k body B . The o t h e r e n d o f t h e c h u c kbody i s a l s o p r o v i d e d with a r e c e s s i n whichmove t h e forward ends o f t h e j a w s C r ec e i v e d i n f o r w a r d l y c o n v e r g i n g r e c e s s e s B .At t h e i r d i v e r g i n g r e a r p o r t i o n s t h e j a w s Ca r e p r o v i d e d w i t h s c r e w - t h r e a d s a n d a d a p t e dt o f i t i n t o t h o s e o f t h e n u t D t a p e r e d i n t e rn a l l y a n d ? t t e d i n t o a n a n n u l a r r e c e s s B2 o ft h e c h u c k body B . I n o r d e r t h a t t h e n u tmay be p l a c e d i n t h i s r e c e s s i t i s ma d e o f a tl e a s t t w o r i n g s e g m e n t s . T h e s e s e g m e n t s o ft h e n u t a r e n o r m a l l y h e l d t o g e t h e r by as l e e v e o r f e r r u l e E which i s s l i p p e d on e n dw i s e a n d i s h e l d t o t h e nut i n any s u i t a b l em a n n e r a s by s l i g h t l y t a p e r i n g t h e i n n e r s u rf a c e o f t h e f e r r u l e o r by d r i v i n g a p i n t h r o u g ht h e f e r r u l e i n t o t h e n u t . At t s r e a r e d g e t h e

    f e r r u l e i s m a d e with a concave groove Ea d a p t e d t o form a run-way f o r b a l l - b e a r i n g sE which a l s o r e s t i n a s i m i l a r groove G p r ov i d e d o n a r i n g G t t a c h e d t o t h e body A yp i n s G 2 o r o t h e r w i s e ; o r i d e s i r e d t h e r i n g Gmay b e f o r m e d i n t e g r a l w i t h t h e body A .The nut a n d f e r r u l e t h u s have a very e a s ym o t i o n a n d t h e m a n i p u l a t i o n o f t h e c h u c kf o r t h e a d j u s t m e n t o f t h e j a w s i s g r e a t l yf a c i l i t a t e d . As t h e b a l l s F l i t t h e g r o o v e s E a n d G on t h e o u t e r s i d e o f t h e b o d y t h e yp r o d u c e t h e r e q u i s i t e a n t i - f r i c t i o n b e a r i n gw i t h o u t e m p l o y i n g a n o u t e r r e t a i n i n g r i n gand a r e a l w a y s a c c e s s i b l e t o c l e a n i n g a n dl u b r i c a t i o n . They s e r v e t o a v o i d f r i c t i o n i nt h e a d j u s t m e n t o f t h e j a w s w h i c h i s p r od u c e d by t u r n i n g t h e f e r r u l e a n d n u t .What I c l a i m i s :I n a c h u c k t h e c o m b i n a t i o n o f t h e bodyh a v i n g a t a p e r i n g f r o n t e n d l o n g i t u d i n a l r ec e s s e s c o n v e r g i n g toward s a i d e n d and ana n n u l a r r e c e s s communicating w i t h s a i dl o n g i t u d i n a l r e c e s s e s a r i n g s u r r o u n d i n g t h ebody i n t h e r e a r o f s a i d a n n u l a r r e c e s s andr i g i d l y s e c u r e d t o t h e b o d y a r o t a t a b l e f e rr u l e s u r r o u n d i n g t h e b o d y l o o s e l y i n a d v a n c eo f s a i d r i n g a n d i n l i n e t h e r e w i t h s a i d f e r r u l ei n c l o s i n g t h e a n n u l a r r e c e s s o f t h e body as e c t i o n a l nut l o c a t e d i n s a i d annular r e c e s sand a r r a n g e d t o r o t a t e i n u n i s o n w i t h t h ef e r r u l e b e a r i n g b a l l s i n t e r p o s e d b e t w e e n t h ea d j a c e n t e n d s o f t h e r i n g a n d f e r r u l e a n dc o n v e r g i n g j a w s mounted t o s l i d e i n t h el o n g i t u d i n a l r e c e s s e s o f t h e body and s c r e wt h r e a d e d t o ? t t h e s a i d n u t .I n t e s t i m o n y w h e r e o f I have h e r e u n t o s e tmy hand i n t h e p r e s e n c e o f t w o s u b s c r i b i n gwitnesses

    THOMAS . ALMONDWitnessesJOHN L O T K AE UGE N E EBLE.

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