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N o . 6 0 , 9 3 2 . Patented J a n : 1 1 8 6 7 .

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U i v r r n ; STATES PATENT O F F I C E .SAMUEL J . Pnnr or new ORK N . Y .

IMPROVEMENT IN STEAM ENGINE VALVES.

S p e c i ? c a t i o n f o r m i n g p a r t o f L e t t e r s P a t e n t N o . 60 932 d a t e d J a n u a r y 1 1 8 6 7 .

To a l l whom t may oncernBe t known t h a t I SAMUEL J . ' P E E T , o ft h e c i t y c o u n t y , a n d S t a t e o f New o r k , haveinvented a n e w a n d u s e f u l improvement i nV a l v e s ; a n d I d o h e r e b y d e c l a r e t h a t t h e f o ll o w i n g i s a f u l l c l e a r a n d e x a c t d e s c r i p t i o nt h e r e o f , which w i l l e n a b l e o t h e r s s k i l l e d i n t h ea r t t o m a k e a n d use t h e same r e f e r e n c e beinghad t o t h e a c c o m p a n y i n g d r a w i n g s , f o r m i n gp a r t o f t h i s s p e c i ? c a t i o n , i n w h i c h

Figure l i s a c e n t r a l l o n g i t u d i n a l s e c t i o n o fmy i m p r o v e d v a l v e , t a k e n i n t h e p l a n e o f t h el i n e a : a s F i g . 2 . F i g . 2 i s a p a r t i a l t r a n s v e r s e .s e c t i o n t a k e n i n t h e p l a n e o f t h e l i n e 9 F i g .1 . F i g . 3 i s a detached v iew o f t h e i n s i d e o fone o f t h e double v a l v e - p l a t e s . F i g . 4 i s as i m i l a r v i e w o f t h e c o r r e s p o n d i n g v a l v e - p l a t e .F i g . 5 i s a detached o u t s i d e view o f t h e doublev a l v e - p l a t e s u n i t e d a s e m p l o y e d .

S i m i l a r l e t t e r s o f r e f e r e n c e i n d i c a t e l i k eparts.T h i s i n v e n t i o n r e l a t e s t o an improvementi n v a l v e s f o r : v s t e a m , g a s , c o m p r e s s e d a i rheated a i r o r c a l o r i c , w a t e r , o r o t h e r f l u i d s ,where a f a u c e t , g a t e , v a l v e , o r c o c k i s u s e d ;and c o n s i s t s i n a p a i r o f m e t a l d i s k s , ? t t e di n a box or s h e l l t o v c l o s e against s e a t s on t h e i r o p p o s i t e s i d e s b y b e i n g s p r e a d a p a r twith a c o n i c a l wedge o r a s t r a i g h t w e d g et u r n i n g on a s w i v e l screwed between t h e d i s k s ,o r which may be o p e r a t e d on by a s l i d i n g_ ~ w e d g e or e q u i v a l e n t d e v i c e s .A e p r e s e n t s t h e s h e l l o f t h e v a l v e ; B , t h ec a p , through wh i ch p a s s e s a s c r e w , 0 , a l lw h i c h p a r t s a r e c o n s t r u c t e d , i n t h e o r d i n a r yway o f b r a s s o r any o t h e r s u i t a b l e m e t a l .T h e steam o r water w ay s are a a passing i na l i n e t h r o u g h t h e s h e l l a t r i g h t a n g l e s t o t h es cre w G , with ?at s e a t s 0 c on t h e , i n s i d e o fe a c h . I n a c a v i t y i n t h e s h e l l A between t h ev a l v e - s e a t s c 0 two ?at v a l v e p l a t e s o r d i s k s1 b a r e p l a c e d , s o a s t o . be o p p o s i t e t o t h esteamways a a w h e n o p e r a t i n g t o c l o s e themand r e s t i n g i n t h e middle on a p r o j e c t i o n , di n t h e b o t t o m o f - t h e c a v i t y a f o r e s a i d , b yw h i c h r e c e s s e s s h a l l be formed on each s i d e ,and theedges o f t h e v a l v e - p l a t e s s h a l l n o ts t r i k e and become b a t t e r e d w h e n t h e y a r ef o r c e d i n t o p l a c e . ' T h e v a l v e - p l a t e s b b a r e? t t e d a s male and female t o each o t h e r ond o w e l - p i n s e e a s shown i n F i g s . 8 4 and 5

and i n t h e i n n e r s i d e o f t h e v a l v e - p l a t e s a r ec o r r e s p o n d i n g t a p e r r e c e s s e s g g w h i c h r ec e i v e a c o n i c a l wedge h on t h e end o f t h es c r e w 0 , a s s e e n i n F i g . l which wedge i sshouldered on t h e upper s i d e , s o a s t o c a t c hon a corresponding shoulder i n t h e r e c e s s e s gg and i f t t h e v a l v e - p l a t e s b I t o g e t h e r fromt h e i r s e a t s 0 c i n f r o n t of the s t e a m w ay s a a .Th e v a l v e - p l a t e s b b a r e m a d e t o l i e c l o s e t oe a c h o t h e r w hen t h e wedge h i s r a i s e d , and t op l a y back and f o r t h f r e e l y b e t w e e n t h e v a l v es e a t s 0 a ; b u t w h e n t h e w e d g e h p r e s s e sa g a i n s t t h e s i d e s o f t h e r e c e s s e s g g i n t h ev a l v e - p l a t e s i t s p r e a d s them a p a r t , and r e s s e st h e i r f a c e s t i g h t l y a g a i n s t t h e s e a t s 0 c i n suchmanner t h a t steam c annot p a s s b y them e i t h e rthrough d i r e c t o r b a c k a c t i o n .

I t w i l l b e o b s e r v e d t h a t w i t h t h i s . a r r a n g ement o f t h e v a l v e - p l a t e s t h e y b e a r upon t h es e a t s and a r e h e l d r i g i d l y , s o t h a t t h e r e s i s ta n c e i s p o s i t i v e a g a i n s t t h e p r e s s u r e o f steami n t h e w a y s , and t h u s c l o s e them p e r f e c t l yw h i l e t h e o p e r a t i n g - w e d g e i s f o r c e d i n t o t h ebottom o f t h e r e c e s s e s i n the v a l v e - p l a t e s ;and a l s o t h a t w h e n t h e v a l v e - p l a t e s a r e r a i s e di n t h e c a v i t y b y t h e screw t h e steam o r waterways a r e f u l l y open d i r e c t l y i n l i n e w i t h eacho t h e r f o r t h e f r e e passage o f steam o r w a t e r .

I t w i l l b e o b s e r v e d t h a t t h i s v a l v e i s a p p l ic a b l e a l i k e t o any v a l v e f o r s t e a m , g a s , C O l l lp r e s s e d a n d h e a t e d a i r w a t e r , o r o t h e n ? u i d s ,w h e r e f a u c e t s v a l v e s , g a t e s c o c k s , o r s t e a mt r a p s a r e u s e d .1 d o n o t l i m i t m y s e l f t o a p p l i c a t i o n , s o l o n ga s p l a t e s and wedges c o n s t r u c t e d on t h i s p r i nc i p l e a r e employed to open a n d c l o s e v a l v e s .Having t h u s d e s c r i b e d my i n v e n t i o n , whatI c l a i m a s new and d e s i r e t o s e c u r e by Lett e r s P a t e n t , i sT h e p a i r o f v a l v e - p l a t e s b b i n combinationwith t h e c o n i c a l w e d g e h on t h e screw 0 o ri t s e q u i v a l e n t , a r r a n g e d a n d o p e r a t i n g s u bs t a n t i a l l y a s and f o r t h e purpose h e r e i n des c r i b e d .r l l h e above s p e c i ? c a t i o n o f my n v e n t i o ns i g n e d by me h i s 2 3 d d a y o f N o v e m b e r , 1 8 6 6 .

SAMUEL . PEET.W i t n e s s e sWM. . M C N A M A R A ,ALEX. F . ROBERTS.