7/30/2019 Estopey 1925 US2118041

1/18

E I 3 5 ~ 1 + 0 1 SRm 2 5 , 1 1 5 , 0 4 1 E B C H R G O M ,

j v u @ROSS Hmm-NGEMay 4 , 1 9 3 8 . . 1 _ . ESTOPPEY 2 , 1 1 8 , 0 4 1

y BOMBSIGHTING DEVICE Y

Original Filed S e p t . 5 , 1959 6 Sheets-Sheet l

F 7 6 . / .

V yfwe - s i Qs.W _TTORNE Y

7/30/2019 Estopey 1925 US2118041

2/18

7/30/2019 Estopey 1925 US2118041

3/18

V 2 . 1 1 8 , 0 4 1ay 4 1 9 3 8 - G , L . ESTOPPEYB O M B S I G H T I N G n E v l c E

6 S he e ts-S he e t 3r i g i n a l F iIe d Sept. 5 , 193D '

242

m f Y

7/30/2019 Estopey 1925 US2118041

4/18

v ' ' . ` ' .

May 24, 1938. G . 1 _ . ES TOPPEY 2,118,041- U fBOMB SIGHTING DEVICE w i r J

o r i g i n a l F i l e d s e p t . 5 , 1 9 3 0 e sheets-snep:l \ _ U.

auf

/23

[l 5/ l Z/ a

/ 0 623 / 2 a

34/ f s #

////// /

AUTO up: TYP: 1w: TYPE ` ]/23` A A B l; g! ma../- AUTO NAND ^/22 m l?! AUTO TYPETYPTYPETM c c n n

INVENTOR

A

7/30/2019 Estopey 1925 US2118041

5/18

May 4, 1 9 3 8 . G . L . . EsToPPEY 2118,041. BOMB SIGHTING' DVICE

Y Original F i l e d Sept. 5 , 1 9 3 ! ) 6 Sheets-Sheet 5 'l

A F/. /8- N 5 2 L 1 : g / . s ' f 1 4 a \ _ 9 0 ' f rY , 6 l

alf - f f s V" f'k,0.-.. /59 " y

IN ENTO/

ATTORNEY

7/30/2019 Estopey 1925 US2118041

6/18

yMay 2 4 , 1 1 9 . 3 8 . ' . L , ESTOPPEY 2 , 1 1 8 , 0 4 1B o n a S I G H T I N G . a - N I C E

o r i g i n a l F i l e d s e p t . s , 1 9 3 s e s h e e t s - s h e e t s

' l v g ,Z n ./F 7 6 . E/ Y

7/30/2019 Estopey 1925 US2118041

7/18

Patented May , 4 , 1938

UNITED STATES

2,118,041

PATENTv OFFICE2 , 1 1 8 , 0 4 1

BOMB SIGHTING DEVICEG e o r g e s L . E s t o p p e y , D a y t o n , Ohio

A p p l i c a t i o n S e p t e m b e r 5 , 1 9 3 0 , S e r i a l N o . 4 7 1 9 . 9 5 0Renewed May 1 , 1 9 3 62 4 C l a i m s . ( C l . 3 3 t - 4 6 . 5 )

This invention r e l a t e s t o sighting devices such ~as are - u s e d in t he dropping of bombs or p r oj e c t i l e s from a i r c r a f t , o r t o s i m i l a r d ev i c e s wheret h e r e i s r e l a t i v e movement between a n o b j e c t i v e5 a n d the sighing d e v i c e a n d the two are a t d i ff e r e n t e l e v a t i o n s .On e o b j e c t o f the i n v e n t i o n i s the p r o v i s i o n' o f a s i g h t i n g d e v i c e o f t h i s character providedwith a movable s i g h t i n g memb er , a n d having a n1 0 adjustable t i m i n g member, means being pro- ~vided f o r adjusting the timing member i n accordance with t h e speed o f t h e movable s i g h ti n g member.Another o b j e c t o f the i n v e n t i o n i s t h e p r o v i1 5 s i o n o f a s i g h t i n g d e v i c e o f the character mentioned h a v i n g a variable s p e e d drive b e t w e e n apower s o u r c e a n d t h e movable s i g h t i n g member,the c o n s t r u c t i o n b e i n g such that a constanttorque i s applied t o the power source so that i t sspeed o f o p e r a t i o n i s c o n s t a n t .2 A urther object o f the invention i s the provi-s i o n o f a s i g h t i n g memb e r f o r the r e l e a s e o fbombs from a i r c r a f t , having a s i g h t i n g memb e ra n d a n a d j u s t a b l e timing m em be r the l a t t e r being adjustable along a n ordinate o f a coordinatesystem i n accordance with the a l t i t u d e a n d autom a t i c a l l y p o s i t i o n e d a l o n g t h e o t h e r o r d i n a t e i naccordance with the speed o f t h e movable s i g h t - `i n g member.3 0 Another o b j e c t o f t h e i n v e n t i o n i s t h e p r o v ision of a sighting device h a v i n g a movable sighting member and a n adjustable t iming membersupported in a . novel manner o provide a verya c c u r a t e a n d e a s i l y operated s i g h t , whi c h c an be3 5 manipulated i n a very short space o f t i m e .Another o b j e c t o f t h e i n v e n t i o n i s t h e p r o v is i o n o f m e a n s f o r a d j u s t i n g t h e s i g h t t o mak et r a i l c o r r e c t i o n s , l o n g i t u d i n a l l y o f the s i g h t , f o rcompensating f o r a i r r e s i s t a n c e o f the bomb n4 0 accordance with i t s terminal v e l o c i t y . time l a g ;a i r s p e e d , a l t i t u d e o f t h e s i g h t , d r i f t a n g l e , a n g l eo f approach with r e s p e c t t o a movable o b j e c t i v e ,a l t i t u d e o f the o b j e c t i v e , a n d temperature a fi e c t i n g t h e t e r m i n a l v e l o c i t y o f t h e bomb.4 5 Another o b j e c t o f t h e i n v e n t i o n i s the p r o v is i o n o f m e a n s f o r a d j u s t i n g the s i g h t t o makel a t e r a l c o r r e c t i o n s compensating f o r the r e s i s tance o f the wind a g a i n s t the bomb, w h e n f l y i n gc r o s s wind, t h i s compensation being c o r r e c t e d i n5 0 accordance with the a i r r e s i s t a n c e o f the bombaccording t o i t s t e r m i n a l v e l o c i t y , time l a g , a i rs p e e d , a l t i t u d e o f t h e s i g h t , d r i f t a n g l e , a n g l e o fapproach with r e s p e c t t o a movable o b j e c t i v e ,a l t i t u d e o f t h e o b j e c t i v e , a n d temperature a f5 5 f e c t i n g t h e t e r m i n a l v e l o c i t y o f t h e bomb.

Another o b j e c t o f t h e i n v e n t i o n i s t h e p r o v i s i o no f a time saving s c a l e provided f o r rapid a djustment o f t h e p o s i t i o n o f the s i g h t i n g memb e rb e f o r e t h e s y n c h r o ni z a t i o n o f t h e s i g h t i n g d e v i c ewith the o b j e c t i v e s o as t o reduce the time o i 5bombing op e r a t ion .A no t h e r object of the in vention i s t h e provi-sion. of means op e r a b l e d u r i n g t h e s y n c h r o n i zi n go p e r a t i o n f o r a u t o m a t i c a l l y moving t h e s i g h t i n gmemb e r a s t h e s p e e d o f t h e s i g h t i n g memb e r i s 1 0 i n c r ea sed or d e c r e a s e d to r e t u r n t h e objective tothe l i n e of s i g h t .Another o b j e c t o i t h e i n v e n t i o n l s t h e provision o f m e e ? s f o r . m ? n g ' a . w r i t t e s i g n - - i n t h e ' i i e l d o ! lv i s i o n j f o r , w arning t h e Y operatorthat the bomb s 1 5 ~about to be dropped or that the bomb droppingtime i s at hand.nother o b j e c t o f the invention i s the provisiono f a n o v e l p i l o t d i r e c t i n g m e a n s embodying threee l e c t r i c lamps which'are a l t e r n a t i v e l y a n d a u t o - 2 0m a t i c a l l y l i g h t e d when t h e s i g h t i s moved abouti t s v e r t i c a l a x i s f o r i n d i c a t i n g t o t h e p i l o t t h ed e g r e e t h a t t h e a i r p l a n e s h o u l d b e t u r n e d t o ther i g h t or t o the l e f t o r t o be held s t r a i g h t ahead.Another> o b j e c t o f t h e i n v e n t i o n i s the p r o v i - 2 5 ,s i o n o f ` m ea n s f o r a u t o m a t i c a l l y balancing the w e i g h t o f t h e moving p a r t s o f t h e instrument s othat the inst rument c a n r e m a i n i n averticalp o s i t i o n .S t i l l o t h e r o b j e c t s a n d advantages o f the i n - 3 0v e n t i o n w i l l be apparent from the f o l l o w i n g des c r i p t i o n , t h e appended c l a i m s , a n d t h e accompanying drawings i n whichF i g . 1 i s a top plan view o f the s i g h t i n g de

v i c e e m b o d y i n g the p resen t invention; 35' F i g . 2 i s a re ar elevation of t h e s igh t ing d ev i c e ;F i g . 3 i s a s i d e e l e v a t i o n o f the s i g h t i n g device; F i g . 4 i s a v e r t i c a l s e c t i o n a l view taken on the 4ol i n e 4 - - 4 o f F i g . 1 through t h e p l v o a l l y mountedsupporting housing a n d on the l i n e '_5through t h e t o p o f t h e s t a n d a r d ;F i g . 5 i s a h o r i z o n t a l s e c t i o n on the l i n e 5-5o i F i g . 4 , a l s o ' showing p a r t c i t h e p i l o t d i r e c t - 4 5l n g device; F i g . 6 i s a horizontal section on l i n e 5--5 ofF i g . 2 ;F i g . 7 i s a h o r i z o n t a l s e c t i o n on l i n e l-l o iFig. 4; ~F i g . 8 i s a t r a n s v e r s e > v e r t i c a l s e c t i o n o f thes i g h t i n g d e v i c e on the l i n e 8_8 i F i g . 1 ;F i g . 9 i s a transverse v e r t i c a l section on l i n e9 - 9 o f F i g . 6 , showing p a r t o f t h e p i l o t d i r e c t o rmechanism; ~ I

7/30/2019 Estopey 1925 US2118041

8/18

2Eg . 1 0 i s a s e c t i o n a l view o f t h e p i l o t d i r e c t o r

indicator; 'F i g . 1 1 i s a c e n t r a l v e r t i c a l s e c t i o n a l view o fthe ma i n s u p p o r t o f the s i g h t i n g d e v i c e :5 F i g . 1 2 ' i s a f r o n t viewof t h e a i r d e n s i t y d i a l ;F i g s . l 1 3 , 1 4 , a n d 1 5 are s e c t i o n a l views o 1 ' thes i g h t i n g member, s h o w i n g t h e arrangement o fthe signal l a mps d e v i c e ; 'F i s ' . 1 5 shows a developed view o f the a l t i t u d el0 scale and ersonal lag s c a l e ; `F i g . 1 7 s howsa d e v e l o p e d v i e w o f a c y l i n d e rs h i e l d used i n c o n n e c t i o n with t h e a l t i t u d e d i a la n d p e r s o n a l l a g s c a l e a n d t y p e o f bomb;F i g . 1 8 i s a diagrammatic r e p r e s e n t a t i o n o f the1 5 c o r r e c t i n g d e v i c e r e l a t i v e t o t y p e o f bomb, a i rs p e e d , w i n d s p e e d , d r i f t a n g l e , a l t i t u d e a n d a i r" ylng in thedirection o f the wi n d or m ak i n gensity;

F i g . 19 s a diagrammatic r e p r e s e n t a t i o n ' o f thes p a c e f a c t o r s a n d a n g l e s ofthe s i g h t i n g d e v i c e ;20 F i g . 20 i s a s e c t i o n a l view o f the a utomatics t o p used i n r e l a t i o n with t h e index o f t h e s h i e l dh e r e a b o v e m e n t i o n e d .F i g . 21 i s a diagrammatic r e p r e s e n t a t i o n o f thespace f a c t o r s a n d angles i n a three coordinate25 system, for a movin g o b j e c t i v e :F i g . 22 i s a diagrammatic plan view c o r r es po n d i n g to F i g . 21; andF i g . 23 i s a d e t a i l showing the c o r r e c t i n g d e v i c ef o r dropping t h e bomb s h o r t o f t h e o b j e c t i v e .3 0 1 1 1 e s i g h t i n g d e v i c e o f t h i s i n v e n t i o n i s h e r e i nshown a s a bomb s i g h t adapted f o r the r e l e a s i n go f bombs o r p r o j e c t i l e s from a i r c r a f t , b u t w i t i st o p _ e understood t h a t the i n v e n t i o n i s s u s c e p t i b l e" t o other . _ u s e s w v h e r e t h e r e " s V r e l a t i v e ` m o v e m e n t3 5 b e t w e e n anbbjectivehnd A t h e s i g h t and t h e v t w oa r e _ a t d i i l ' e r e n t _ e l e v a t i o n s . The s i g h t , a s shown,embodies a standard 2 | ( F i g . 1 l ) whi c h may bemounted n e . suitable position on an aircraft ort h e l i k e s o t h a t t h e xed p o s t 2 2 w i t h i n t h i sstandard i s v e r t i c a l l y p o s i t i o n e d on t h e a i r c r a f t ,t h e standard 2 | b e i n g movable a b o u t the p o s t2 2 . T h e standard 2 | forms a mount o r the s upport ing means 23 which forms a support inghousing f o r v a r i o u s o p e r a t i n g p a r t s o f t h e bomb4 5 s i g h t . As shown i n F i g . 4 the supporting m e a n sor housing 23 i s supported b y t h e g i m b a l mount~ing 2 4 ( F i g . 4 ) ne ar i t s top from an upper part

of the standardv 2 | so t h at housing 23 h a n g s l i k ea p e n d u lum a n d forms a standard o f p o s i t i o nwith r e l a t i o n to the a i r cr a f t . ' _A ovable s i g h t i n g memb e r i s p r o v i d e d whichmay be caused t o f o l l o w the movements o f theo b j e c t i v e , a n d w h i l e t h i s movable s i g h t i n g member may e o f a n y d e s i r e d c h a r a c t e r , i t i s hereinshown a n d d e s c r i b e d f o r purposes o f i l l u s t r a t i o nas a n o p t i c a l d e v i c e 2 5 c a r r i e d by a l i n k 25 a n dhaving a t o p s i g h t bead 2 1 a n d a bottom s i g h t

5 5

bead 2 8 which may e a l i g n e d with the e y e and'with the o b j e c t i v e s o t h a t w h e n the s i g h t s 2 l a n d2 8 thus aligned with the eye appear t o f o l l o w themovement o f t h e o b j e c t i v e , t h e s i g h t i n g m emberi s ready f o r s y n c h r o n i z i n g o p e r a t i o n . As shownthe carrying or s i g h t i n g l i n k 2 5 i s provided i n s i d et h e housing 2 3 . Th e l o w e r end o f t h e s i g h t i n gl i n k 25 i s s l o t t e d a t 2 9 a n d engages a pin 3 0 onm i c r o m e t r i c ' s c r e w 3 2 , t h e l a t t e r b e i n g mountedi n s u i t a b l e b e a r i n g s 3 3 i n t h e housing 2 3 a n d e xt e n d i n g h o r i z o n t a l l y a c r o s s t h e h o u s i n g . Thuswhen he s c r ew 32 i s rotated a t the proper speedthe pin 3 i ) operating in the s l o t S causes thes i g h t i n g l i n k 25 t o pivot about > i t s upper e n d so_ t h a t the o p t i c a l l i n e f o l l o w s the o b j e c t i v e i n synchronism w i t h i t s a p p a r e n t movement.7 ' 5 T h e b e a r i n g s l e e v e 3 4 f i x e d t o th e u p p e r e n d

a nut 3 | w h i c h i s i n th readed e n g a g e m e n t with a

9 , 1 1 3 , 0 4 1o f the s i g h t i n g l i n k 2 5 p i v o t s about s t u d 3 5 whichi s f i x e d t o a t r i a n g u l a r swinging frame 3 6 whi c hi s y p i v o t a l l y s u p p o r t e d a t i t s l o w e r e n d s . V T h e 'up p e r e n d of f r a m e 35 pivotally carries a s l i d e 33on a x i s 3 l , t h e slidebeing movable t r a n s v e r s e l yi n the guide 39 w h i c h forms a part o f anothers l i d e 4 0 movable l o n g i t u d i n a l l y i n a g u i d e 4 | x e d t o t h e ma i n housing 2 3 , a s apparent fromF i g s . 4 , 6 , a n d 8 . Th e l o w e r p a r t o f t h e frame3 5 ha s two b e a r i n g s u p p o r t s 4 2 a n d 4 3 which

' turn and l i d e longitudinally on t he e n d parts~ of t h e micrometric" s c r e w 3 2 . A l o t 4 5 i n thelower en d o f the frame s l i d a b l y r e c e i v e s a n armp r o j e c t i o n 4 4 o f t h e nut 3 | t o r e s t r a i n t h e nutfrom turning. ' I h e s l i d e 4 0 ' i s a ' part o f the corr e c t i n g d e v i c e f o r making t r a i l A c o r r e c t i o n s i fground c o u r s e l components o f the t r a i l c o r r e ctions i f y i n g a d r i f t . By means of the s l i d e 4 0 ,the-upper end o f the s i g h t i n g memb e r may e 'moved l o n g i t u d i n a l l y o f t h e bomb s i g h t by s e veral control devices t h a t will b e later described.a n d the s l i d e 38 i s a part o f the w ind d e f l e c t i o nc o r r e c t i n g device s o that the upper e nd o f themovable s i g h t i n g m ember may b e w moved l a te r a l l y i n accordance with the wind d e f l e c t i o n s ot h a t the o p t i c a l l i n e o f the s i g h t i n g memb e r 2 5moves along a n i n c l i n e d piane wh ich i s p r o p e r l yi n c l i n e d t o t h e ' v e r t i c a l . ( S e e F i g . 8 . )Withi n the housing 2 3 i s a s u i t a b l e power dev i c e such as a n e l e c t r i c motor 4 S ( F i g . 4 ) o f thec o n s t a n t s p e e d t y p e , t h i s motor p r e f e r a b l y . h a ving a n automatic governor 4l w h i c h m a k e s a n dbreaks a n e l e c t r i c a l connection 48 so that thespeed o f t h e motor i s maintained s u b s t a n t i a l l yc o n s t a n t . This motor i s connected by s u i t a b l eleads to a battery 43 or other source o f e l e ct r i o i t y s u i t a b l y ` l o c a t e d on t h e v a i r c r a f t . T h emotor shaft S i l d r i v e s a worm 5 | w h i c h m e she swith worm wheel 5 2 , the worm a n d worm wheelbeing s u i t a b l y supported i n b e a r i n g s i n a b r a c k e t

1 5 I

30

4 . 053 w h i c h i s fastened on the supporting housing2 3 . Theworm wheel 5 2 i s c a r r i e d on a shaft t ow h i c h i s fastened a f r i c t i o n d i s c 5 4 . E n g a g i n gt h i s f r i c t i o n d i s c , wh ich forms the d r i v i n g member o f a v a r i a b l e speed transmission m e c h a n i s mbetween the motor 4 B a n d the screw 3 2 , i s adriven f r i c t i o n wheel 5 5 s u i t a b l y mounted i n ab r a c k e t g u i d e 5 6 . ' This b r a c k e t g u i d e i s i n s l i d ing e n g a g e m e n t with a t r a n s v e r s e shaft 5 1 w h i c hi s f i x e d by s u i t a b l e ke y a n d s l o t c o n n e c t i o n s t othe f r i c t i o n wheel 5 5 , the s l o t 5 3 i n t h i s s h a f t extending s u i l l c i e n t l y f a r s o that the f r i c t i o n wheel5 5 may be moved from the center o f the d i s c5 4 t o i t s p e r i p h e r a l >portionwhile i n r o t a t i o n a ld r i v i n g connection with the s h a f t 5 1 . Th e guideb r a c k e t 5 8 i s p a r a l l e l t o t h e t r a n s v e r s e s h a f t 5 l ,both o f t h e s e s h a f t s b e i n g s u i t a b l y mounted a tt h e i r ends i n b e a r i n g s provided i n t h e supporting housing. The guide bracket 5 6 beingthreaded on shaft 5 9 , as the l a t t e r i s rotated thep o s i t i o n o f t h e g u i d e b r a c k e t i s a d j u s t e d , and t h i si n turn a d j u s t s the speed o f r o t a t i o n o f the shaft5 l s i n c e the p o s i t i o n o f the f r i c t i o n wheel . S 5 - i smoved towards or away from the center o f drivi n g d i s c 5 4 . Th e s h a f t 5 l d r i v e s the micrometricscrew 3 2 through gear 6 0 a n d d i f f e r e n t i a l 6 | .T h e purpose o f the d i i e r e n t i a l 5 | i s t o permitmovement f the s c r e w 32 t o s e t the sighting l i n k2 5 a t t h e m i n i m um pick-up a n g l e c o r r e s p o n d i n gt o a l t i t u d e a n d a i r speed with out correspondingmovement o f t h e shaft 5 l when th e motor l s atr e s t . P r e f e r a b l y the d i f f e r e n t i a l 6 | embodiesp l a n e t a r y g ea r s 5 | ' carried on a rm s w h i c h arexed t o t h e g e a r l l l , t h e p l a n e t a r y ' g e a r s 6 I

50

5 5

60

65

7 0

7 5

7/30/2019 Estopey 1925 US2118041

9/18

_ _ 2,118,041m e s h i n g with a . s un g e a r on t h e e n d of shaft 32and i t h a l a r g e outside g e a r which m e s h e s w i t h

10

15

a ear S i ) on shaft 5 T . V I t w i l l thus be apparentt h a t the gear S 8 may be r o t a t e d manually t or o t a t e the screw 3 2 without imparting movementt o the l a r g e outside gear of the d i f f e r e n t i a lmeshing with gear S i l , but on the o t h e r h a n dw h e n t h e gear 6 G i s r o t a t e d i t w i l l impart r o t at i o n a l movements to t h e s c r ew 32 at a proportionate speed. ' .A ombined a l t i t u d e a n d airspeed s c a l e $ 2 i sengraved on a tube B 3 , s e e F i g s . 3 a n d 8 . Thet u b e 6 3 i s c o n t r o l l e d r o t a t a b l y by-means o f aknob 6 4 a t the e n d o f the t u b e . Rotational movements o f t h i s knob r o t a t a b l y a d j u s t the tube 6 3t o p o s i t i o n the proper combined a l t i t u d e a n d a i rs p e e d scale 62 i n t h e s l o t 65 on t he cover to per-mi t reading of only on e s e t o f s c a l e s a t a t i m e .The cales coop er a te w i t h an i n d e x S3 which i s20

30

3 5

45

50

55

6 0

65

7 0

c a r r i e d by the nut 3 | , having a bearing connect i o n t h e r e w i t h p e r m i t t i n g i t t o . t u r n i - a b o u t t h enut 3 | w h e n : the frame 361s i n c l i n e d . Th e p o s it i o n o f the index 6 8 (and the nut 3 | ) may bemanually c o n t r o l l e d o r s e t by the ha n dwheel 5 1w h i c h operates the gear E 8 through a f r i c t i o nc l u t c h 6 9 which p r e v e n t s f o r c i n g o r s t r a i n i n g o ft h e me c h a n i s m a n d o f the timing l i n k s . T h egear 6 8 d r i v e s the pinion I G a n d operates thes crew 32 through the d i f f e r e n t i a l 6 I . This prel i m i n a r y s e t t i n g o f the nut 3 l i s accomplishedb e f o r e t h e s y n c h r o n i z i n g o p e r a t i o n i n o r d e r t h a ttime may b e s a v e d , making i t unnecessary t of o l l o w the t a r g e t f o r a n e x c e e d i n g l y long p e r i o do f t i m e .Th e p o s i t i o n o f t h e g u i d e b r a c k e t 5 6 f o r theproper speed o f o p e r a t i o n o f the s i g h t i n g l i n k2 5 i s determined by the r o t a t i o n a l movement o fthe shaft 5 5 . This shaft i s f i x e d t o a gear ' I lat on e e n d thereof w h i c h m e s h e s wit h a g e a r' l 2 c a r r i e d on a threaded shaft 7 3 w h i c h i s s u i ta b l y mounted f o r r o t a t i o n a l movement i n thehousing 2 3 . On h e o t h e r end o f t h i s s h a f t 1 3i s a b e v e l gear 'M w h i c h i s driven b y a bevel gear' I 5 carried on a shaft 7 6 . The uppe r e n d of thes h a f t i 6 i s driven by a b e v e l gear 1 l whi c h l sd r i v e n i n turn by b e v e l gear 1 8 f i x e d to thee n d o f a t h r e a d e d regulating shaft 1 9 . Be twe e nthe b e v e l gear ' i l a n d the upper e n d o f the shaft1 6 i s a s u i t a b l e gimbal connection 8 0 s o t h a t t h eproper driving connection i s ma i n t a i n e d b e t w e e ngear 1 l w h i c h i s journaled on the st andard 2 |a n d s h a f t ' i 6 which moves with the suspendedhousing 2 3 . The regulating shaft 19 i s rotated .by a manually c o n t r o l l e d handle 8 | , whi c h p e r ~mits r a p i d a n d approximate r e g u l a t i o n o f thep o s i t i o n o f the f r i c t i o n Wheel 5 5 by o p e r a t i o n o fthe handle device 8 | as a l e v e r , a n d permits slowa n d a c c u r a t e r e g u l a t i o n by r o t a t i n g t h e c o n t r o l knob 8 2 about i t s s h a f t 8 3 . ' I ' h i s motion o f theh a n d l e d e v i c e 8 | , as a l e v e r , i s indicated by ahandle index | 3 | provided on the top o f thehandle d e v i c e a n d cooperating with a s c a l e | 3 2provided on t h e s t a n d a r d 2 | . This i ndex a n ds c a l e permits the approximate s e t t i n g o f t h ehandle device (which approximately s e t s thef r i c t i o n wheel 5 5 i n accordance with th e a l t itude a n d average s p e e d ) thus reducing t h e timer e q u i r e d f o r the s y n c h r o n i z i n g o p e r a t i o n , t h es c a l e | 3 2 being graduated i n accordance with thea l t i t u d e . A f t e r roughly s e t t i n g t h e handle dev i c e i n accordance with the a l t i t u d e i n d i c a t i o n so f s c a l e | 3 2 , a s e co n d approximate o r r i g i d regu l a t i o n o f the p o s i t i o n o f the f r i c t i o n wheel 5 5 i sobtained b y ' pulling or p u s h i n g the h a n d l e 8 i7 5 w h * v i 1 i s r o t a t a b l y h un g on t h e standard 2 | i n a

3b e a r i n g 8 4 . F i x e d t o t h e h a n d l e 8 | i s ' a g e a r'segment 8 5 , w h i c h d r i v e s a t r a i n o i ' reductiong e a r s 8 E , 8 l , an d 8 8 , ` t h e l a t t e r being xed onshaft 1 9 . A i f f e r e n t i a l 89 p r o v i d e d between theknob B 2 a n d th e h a n d l e S i prevent s th e rotat i o n o f the knob 8 2 w h e n the ha n d l e 8 | i s p u l l e dor pushed in t h e manner of a lever.Slow and a c c u r a t e r e g u l a t i o n o f the speed o fthe screw 3 2 by adjustment o f the p o s i t i o n o f thef r i c t i o n wheel 5 5 i s obtained by turning the knob82 about i t s s h a f t 8 3 . In tuming t h e knob 8 2 ,the shaft e s , i s r o t a t e d throughk the diaerennai8 3 . On thelupper e n d o f t h e s h a f t 8 3 i s f i x e dp i v o t a l gear 9 0 whi c h mes h es with a p i v o t a l gear9 | f i x e d on shaft 1 9 . When he knob 8 2 i s turned

' t h e h a n d l e 8 | i s swungforwardly or b a c k w a r d l y ,i n accordance with t h e d i r e c t i o n o f t u r n i n g , thusg i v i n g a n i n d i c a t i o n a u t o m a t i c a l l y o f the d i r e c' tion of rotation of th e knob 8 2 . showing t heo p e r a t o r whether t h e knob 8 2 i s b e i n g p r o p e r l yturned as h e c a n f e e l the way n w h i c h the l e v e r8 | i s s w i n g i n g , t h u s p r e v e n t i n g c o n f u s i o n . ' Th erotational movements of the knob 82 ar e so a rr a n g e d as t o provide f o r a rather slow turning ofthe s h a f t 1 9 , but when the l e v e r 8 | i s s wu n g onthe bearing 8 4 , a r a t h e r l a r g e angular movementof the shaft 19 obtains. ~0n he shaft 59 i s fixed the s un g e a r of t h e d i ff e r e n t i a l S 2 , the p l a n e t a r y g e a r s o f the d i f f e r e n t i a lbeing c a r r i e d by a r m s w h ich are rotatably sup`ported on the shaft 5 S . Th e shaft 59 may e rotated through the g e a r s T I a n d 1 2 when he shaft' i 9 i s r o t a t e d , but every time the shaft 1 9 i smoved, the screw 3 2 w i l l be d r i v e n throught h e g e a r s | 3 5 , | 3 4 , | 3 3 , a n d t h e d i f f e r e n t i a l S2 ,t o move the n ut 3 | b a c k w a r d or forward whenthe h a n d l e 8 | i s o p e r a t e d . T h e s c r ew 3 2 a t t h i stime i s being moved by the f r i c t i o n d i s c d e v i c es o that the l i n e o f s i g h t w i l l f o l l o w the o b j e ct i v e . but t h e s p e e d o f movement o f the s i g h t i n gmember may e too slow, in w h i c h cas e t h e obj e c t i v e moves i l ' o f t h e l i n e o f s i g h t . I f the speedo f the s i g h t member s c o r r e c t e d t h i s would s t i l ll e a v e the o b j e c t i v e d i s p l a c e d from ' t h e l i n e o fs i g h t , s o each time the speed o f the s i g h t mem~be r i s changed, t h e o b j e c t i v e i s v a u t o m a t i c a l l ybrought back t o t h e l i n e o f s i g h t by superimposin g on the normal mo v e m e n t s o f the screw 3 2 ,a n additional movem e n t th rough the d i f f e r e n t i a l9 2 as p r e v i o u s l y e x p l a i n e d . In t h i s way thes i g h t i n g member s automatically stepped up f o rwardly o r backwardly, t h e lower en d o f the s i g h t ing memb e r moving backward with r e s p e c t t o t h ed i r e c t i o n o f t r a v e l o f the a i r c r a f t a s the speed i sincreased a n d moving o p p o s i t e l y as the speed i sd e c r e a s e d , r e t u r n i n g t h e o b j e c t i v e t o the l i n e o fs i g h t i n an automatic manner. ^The n g u l a r . movements o f the h a n d l e 8 | arelimited by a stop | 1 2 s how n i n the form o f astud f i x e d thereon a n d projecting i n _ t o a segm e n ta l s l o t | 1 3 whi c h i s concentric t o the shaft19 a n d i s provided on the e n d o f the support 2 | .I t w i l l now be apparent, a s sumi n g the motor4 6 t o be i n operation a n d d r i v i n g the micrometrics c r e w 3 2 th rough the variable s peed transmiss i o n , the manipulation o f handle 8 | may causer o t a t i o n a l movements o f the threaded shaft 5 9a n d p o s i t i o n the bracket guide 5 5 in su c h a location as to caus e t h e n ut 3 | to move a lo ng s c r e w3 2 at such a speed that the o p t i c a l l i n e of thesighting member appears to follow th e moveme n t o f t h e o b j e c t i v e ,To impose a s u b s t a n t i a l l y . constant torque ordriving e r o r t on v t h e motor a s t he driven I ' r i c ltion wheel 5 5 moves a t h i g h or l o v : r speeds, i

20

30

35

45

50

55

60

85

7/30/2019 Estopey 1925 US2118041

10/18

4I r i c l n ' o n drag i s imposed on the d i s c 5 4 i n sucha way t h at th e t o t a l torque required to dnve t h ew h e e l 5 5 and the f r i c t i o n d r a g i s substantially c c n s t a n t r c g a r d l e s s of t he position o f the ' f r i c5 tion wh e e l 5 5 . Th is d r a g i s s how n i n the form ofa s u i t a b l e drag m e m b e r S 3 i n rubbing e ngagem e n t with the r o t a t i n g d i s k 5 6 a n d c a r r i e d a x c dd i s t a n c e a w a y from t h e w h e e l 5 5 by the a r m s8 | extending o u t from t h e lower e nd o f t h eb r a c k e t g u i d e 5 5 . When t h e f r i c t i o n drag 8 3 ,wh ich p r e f e r a b l y does not transmit the f r i c t i o n t o r q u e t o the s h a f t 5 9 , 1 i s s u b s t a n t i a l l y a t theA c e n t e r o f t h e d i s c ` 5 4 , a n d i t s r e t a r d i n g e l e c t i ss u b s t a n t i a l l y z e r o , t h e f r i c t i o n wheel 5 5 i s a t i t sAma x imum d i s t a n c e from the c e n t e r . W h e n ,however, t h e d r i v i n g f r i c t i o n wheel 5 5 i s movedtowards the c e n t e r o f the d i s c 5 4 a n d the torquer e q u i r e d from t h e motor i s r e d u c e d . the dragmemb e r 9 3 i s e f f e c t i v e a t a s u b s t a n t i a l d i s t a n c ev o n the other s i d e of the center of d i s c 5 4 so thatthe combined t o r q u e e f f e c t o f t h e two p a r t s eng a g i n g d i s c 5 4 i s s u b s t a n t i a l l y c o n s t a n t .' I l i e ~ e x a c t ~ ~ t i m e ` a t _ w h i c h t h e bomb i s t o b ed r o p p e d s o t h a t i t majalgipol h e o b j e c t i v e

10

15

M 5 shownminnthe f o r m . o f a p i v o t e d s l o t t e d V l e v e r .A This t iillngumgmbeLengage s~ a pin 9 6 c a r r i e do n w a s t ' o p s l i d e 9 1 w h i c h s l i d e s e l y ' a l o n g t h ei c r o m e t r i c screw 3 2 . This s l i d e c a r r i e s a stopontact S 8 whi c h cooperates with a movable. c o n t a c t 9 8 c a r r i e d by the nut 3 | , a t t h e time o fomb r e l e a s e , t h e s e c o n t a c t s b e i n g connectede e c t r i c a l l y t o the battery 4 9 a n d t o a bomb el ase device 209 t o be l a t e r d e s c r i b e d .Another e l e c t r i c c o n t a c t | 0 0 c a r r i e d by t h e nut3 | i s used f o r e n e r g i z i n g a warning s i g n . Thiscontact | 0 0 i s l o n g e r t h a n contact 9 9 , a n d c o r n e si n t o Contact with S 8 e . l i t t l e before the r e l e a s i n gtime o f the bomband i g h t s l amp | 0 | , a s a w a r ni n g s i g n , w h i l e c o n t a c t s S 3 a n d 9 9 l i g h t the r el e a s i n g s i g n a l lamp | 0 2 a t t h e i n s t a n t o f bombr e l e a s e . Th e lamps | 0 | a n d | 0 2 a r e placed i nthe s i g h t i n g f i e l d o f the s i g h t i n g m em be r 2 6 a s. shown in F i g s . 1 3 a n d 1 4 . A h i r d l a m p | 0 3 i s4 5 f o r l i g h t i n g the r e t i c l e o f the s i g h t i n g m e m b e rf o r n i g h t bombing o p e r a t i o n .L amp s | 0 | a n d | 0 2 , through prisms | 0 4 a n d, | 0 5 , project written s i g n s i n the i i e l d o f the t e l es c o p e , such f o r e x a m p l e as W" a n d R, see5 0 F i g . 1 3 , meaning w a r n i n g and r e l e a s i n g momento f the bomb r e s p e c t i v e l y . Th e three l am p s are- enclosed- i n s e p a r a t e c o m p a r t m e n t s . 'Th e timing memb e r S 5 i s connected a t i t s upper e n d to a pi n | 0 6 provided on a n altitude s l i d e| 0 1 whi c h s v e r t i c a l l y mounted f o r s l i d i n g movement n a guide fr am e | 0 8 x e d on a s i d e of th es u p p o r t i n g housing 2 3 . Th e s l i d e | 0 1 i s r a i s e da n d lowered t o i t s proper p o s i t i o n i n accordancewith the a l t i t u d e o f bombing, or v e r t i c a l e l e v at i o n , by a s crew | 0 8 wh ich threads i n t o the s l i d e| 0 1 , the screw | 0 9 b e i n g r o t a t a b l y mounted i nthe guide frame | 0 8 a n d carrying a gear H0 a t

i t s u p p e r en d. , T h i s g e a r H0 m e s h e s w i t h anintermediary gear | | | engaging gear H2 carryi n g a drum | | 3 on w h i c h a r e e n g r ave d altitudes c a l e s H4. On ea r l l 2 i s x e d a bevel gear | l 5 ,meshing w i t h bevelgear l i l i , c o n t r o l l e d by themanually operated ` a l t i t u d e c o n t r o l knob H1 .The shaft H8 on w h i c h i s x e d t he drum | I 3t u r n s i n b e a r i n g | | 9 f i x e d t o t h e housing 2 3 .On he s a m e shaft H8 s f i x e d a cam 2 0 , ` s e e F i g s .4 a n d 1 8 . the purpose o f w h i c h i s t o c o r r e c t automatically the t angent o r ' the t r a i l a n d w i n d d e c t i o n according t o the a l t i t u d e , as w i l l be de

30

35

55

60

65

2,118,041 ` '~The drum H3 s controlled m a n u a l l y a s p r ev i o u s l y m e n t i o n e d , by t h e knob H1, t h i s c o n t r o lb e i n g i n > a c c o r d a n c e w i t h t h e p a r t i c u l a r t y p e ` o f

bomb n d in a c co r d a n c e with t he a l t i t u d e of t h ea i r p l a n e . T h e a l t i t u d e s c a l e s IH on the drum 5| | 3 a r e p r e f e r a b l y arranged i n separate s e t s i nd i c a t i n g a n d computed i n accordance with thea c t u a l f a l l i n g time o f t h e bomb, that i s the vac~uum ime a s modiiied by t h e time l a g dependentupon the type o r bomb, a n d a l s o taking i n t o e v ns i d e r a t i o n the personal l a g whi c h i s a functiono f t h e time a n d o f t h e ground s p e e d . Thus thes e t s Hla, Hb, l i l o , and Hd d l . ' a l t i t u d e s c a e sa s shown i n F i g ; 1 6 , i n d i c a t e the a c t u a l f a l l i n gtime o f the bomb without personal l a g c o r r e ct i o n s , w h i l e t h e s e t s Hm', l l l b ' , H i c ' , a n d Hdd'i n d i c a t e the va cuum time as modilied by thet i m e l a g and p e r s o n a l l a g . Th e s e t s H 4 1 1 ' . I H b ' .| | 4 c ' , and ||4d a r e for use when t h e device i st o be manually o p e r a t e d . These s c a l e s are coo p e r a t i v e l y a s s o c i a t e d with a c y l i n d r i c a l s h i e l d| 2 | , s e e F i g . 1 7 , which has a s e r i e s o f openings| 2 2 a n d whi c h e n c l o s e s the v a r i o u s s e t s o f s c a l e sl e a v i n g o n l y p a r t s o f t h e s c a l e s v i s i b l e throught he openings. This s h i e l d | 2 | may be turnedmanually about i t s v e r t i c a l a x i s t o arrange theproper opening with r e s p e c t t o the proper s c a l e .

16

YThe openings'are arranged i n p a i r s , t wo openi n g s b e i n g thus p r o v i d e d f o r each t y p e o f bomb.On e opening i s f o r cooperation with the s c a l e 0 0I l l a f o r automatic r e l e a s e w h i l e the o t h e r opening o f a p a i r c o o p e r a t e s with t h e s c a l e Ha', : f o rm a n u a l release,.openings being pr ovided f o r theother s c a l e s as w i l l be o b v i o u s . At e a c h open~ing t h e r e i s a n index | 2 3 f o r cooperation with thea l t i t u d e s c a l e . T hu s f o r instance i 1 ' a type Abomb i s t o b e r e l e a s e d a u t o m a t i c a l l y t h e s h i e l d1 2 | i s turned u n t i l the second opening from thel e f t o f F i g . 1 7 c o i n c i d e s with the s l o t | 2 4 o f thel e e v e | 2 5 whi c h i s xed on the housing 2 3 . Th ee x a c t p o s i t i o n o f t h e opening | 2 2 i s p r e f e r a b l ydetermined by m e a n s o f a notch | 2 5 provided i nthe s l e e v e | 2 5 a n d cooperating with a springp r e s s e d s t o p | 2 1 having a s p r i n g a r r a n g e d i n . lthe knob | 2 8 ofthe s l e e v e a s shown i n F i g . 2 0 .' I ' h e e n g a g e m e n t o f the s t o p i n the notch i s suchth at holding t e n d e n cy o f the stop may be overcome when t h e lmob |28 i s tu r n e d .T h e timing member 5 i s iulcrumed on a pin| 2 9 which p r o j e c t s l a t e r a l l y from t h e b r a c k e tg u i d e 5 8 , t h i s p i n s l i d i n g l y s u p p o r t i n g t h e member 9 5 by m e a n s o f the s l o t | 3 0 in the l a t t e r .T h e timing m e m b e r 9 5 i s thus s e t i n i t s properp o s i t i o n w h e n the bracket g u i d e 5 B has beenmoved t o a p o s i t i o n so that the sighting memberf o l l o w s the o b j e c t i v e . > This a c c u r a t e l y d e t e rmines t h e p o s i t i o n o f t h e s t o p s l i d e 9 1 a n d s t o pcontact 9 8 a s t o e f f e c t the r e l e a s e o f the bomb tthe proper i n s t a n t . I t w i l l be understood thatthe timing m e m b e r 9 5 i s thus s e t or p o s i t i o n e d i naccordance w i t h ' t h e a l t i t u d e , a n d a l s o a d j u s t e dhorizontally i n a n automatic manner in accordance with the speed o f the movable s i g h t i n gmember. - 4 lThe l i d e stop cont act 9 8 carries an i n d e x |3 3cooperating with a s c a l e 9 8a graduated i n deg r e e s , see F i g . 3 . The purpose of t h i s device i st o i n d i c a t e the range angle o f the precedingbombing o p e r a t i o n a n d a l s o t o i n d i c a t e the p o s it i o n o f index E 6 in r e l a t i o n t o index | 3 6 while the 70micrometric n ut 3 | i s approaching the s l i d e stop9 8 .Reference to F i g s . 1 8 a n d 1 9 o f the drawings,

which show diagrams of an a p p a r a t u s construct-ed i n accordance with the p r e s e n t i n v e n t i o n , i n

5 5

60

f

7/30/2019 Estopey 1925 US2118041

11/18

10

20

30

35

45

7 0

75

d i c a t e s that the `bomb may be r e l e a s e d a t theproper instant s o that i t w i l l h i t the o b j e c t i v e .In t h i s d i a g r a m t r a i l c o r r e c t i o n s a n d wind deiiections are considered. ,XX, YY, ZZ re the a xes of a three-coordinates y s t e m . (See F i g . 2 1 )Xi X: i s the a x i s of the micrometric screw 3 2Y1 Y1 i s the a x i s o f the guide 5 9Z1 Z1 i s t h e ground 'P s the pin 3 0 o i nut 3 lR s the p o s i t i o n o f pin 9 6 o f adjustable s l i d e9 1 at moment i ' bomb e l e a s eO s the p i v o t i n g p i n 5 5 o f t h e s i g h t i n g l i n k 2 5

( t r a i l c o n s i d e r e d )0' i s the p i v o t i n g pin o f the s i g h t i n g l i n k 2 5( t r a i l not considered)OP s t h e s igh t ing l i n e at th e b e g i n n i n g of t hes y n c h r o n i z i n g o p e r a t i o nOR s the s i g h t i n g l i n e a t moment f bomb elease ' .I 1 R1 i s the range, s e e F i g . 23Va s the a i r speedW s the w i n d ' s p e e d 'Vg s the ground s p e e d

Vr s the r e l a t i v e s p e e dVs i s the speed o f a moving o b j e c t i v eO i' i s t h e r a n g e for a f i x e d or moving obj e c t i v e , i n d i c a t e d i n F i g . 2 20 o r e l a t i v e range f o r movable o b j e c t i v eR i ' A e : A 1 1 c o r r e c t e d t r a i lRf R=temperature orrection of t r a i lRi = t r a i 1 c o r r e c t i o n a c c o r d i n g t o e l e v a t i o no f o b j e c t i v eRf R=trail c o r r e c t i o n a c c o r d i n g t o a c t u a la l t i t u d e of bombing lR1 Ao'=Bi I1=Ao' R 1 ' c o s N O AML-groundcomponent o f c o r r e c t e d t r a i l f o r f i x e d o b ~jectve -Mo' D e ' = " / o Do=O GozAo' R1' CGS N O Us:r e l a t i v e component o f c o r r e c t e d t r a i l f o rmoving o b j e c t i v e

_ po n e n t for x e d objectiveB o ' Do'=Bo Du=0 Eo=Ao' R 1 ' s i n N O Un:d e f l e c t i o n component f o r moving o b j e c t i v e

Angle N O A'=angle Ri A o ' R 1 ' i s the d r i f ta n g l e 'Angle A u ' O u=ang le o f approach f o r movingo b j e c t i v eAngle IOP i s t h e p i c k - u p a n g l eAngle IOR s the range a n g l eAngle AOI s the t r a i l angle (no d r i f t c o n s i de r e d )Angle O O0 Bo i s the r e l a t i v e range angle f o rmoving o b j e c t i v eAngle BOI s the ground component o f the c o rr e c t e d t r a i l a n g i e ( d r i f t c o n s i d e r e d )Angle 00a Go i s t h e r e l a t i v e component o f t h ec o r r e c t e d t r a i l a n g l e f o r moving o b j e c t i v eAngle R e ( ) R e ' i s the d e f l e c t i o n angleAngle 0 Ou En i s the r e l a t i v e d e i l e c t i o n anglefo r moving objective ' p o s i t i o n o f a i r p l a n e when s y n c h r o n i z i n go p e r a t i o n i s s t a r t e dOo p o i n t o f bomb e l e a s eBa p o s i t i o n o f moving o b j e c t i v e a t i n s t a n t o fbomb e l e a s eBe R 1 ' i s the path o f moving o b j e c t i v e duringfalling t i m e oibomb ' ~

h s the basic height o f the instrument

H s t h e v e r t i c a l e l e v a t i o n or h e i g h t o i bomb~i n g' C s a onsta n t of t h e a p p a r a t u sX s a variable which s a functi on of Twhichi n turn i s a function o f H n d o f type o fbombT s the a c t u a l f a l l i n g time o f the bomb

t i s the fal l i n g time n vacuum YA t i s t h e time l a g depending upon h e i g h t s a n dt y p e c i bombt p i s k t h e personal lagK s a c o e i l c i e n t o f speedR s the r a d i u s o i the v a r i a b l e speed d i s ck i s a c oemclent depending upon a i r d e n s i t yi n r e l a t i o n w i t h h e i g h t o f p l a t e a u t o bev bombed

k t i s a c o r r e c t i n g c o e f f i c i e n t depending upona t m o s p h e r i c t e m p e r a tu r e a f f e c t i n g t e r m in a l v e l o c i t y o f bombkn i s a . ` c o r r e c t i n g c o e i l i c i e n t for t r a i l angle according t o a c t u a l a l t i t u d e o f bombingI t c a n be proved that i i we makeK:

t02

a n d the tangent o f the r e l a t i v e range angle w h e nbombing a moving o b j e c t i v e i s e q u a l to

i n whi c h_

a n d wher e

( c o s 1 8 0 A N ) } s i n A ) ' O U 0 } iw h i c h are the formulae upon w h i c h the instru-ment o p e r a t e s .Th e functionxK

i s determined by s e t t i n g e x a c t l y t h e a l t i t u d e s c a l el i 4 a n d by synchronizing l i n e OP with t h e t a rg e t . (See F i g . 1 9 . ) This function i s then computed automatically by m e a n s o f the m e c h a:nism heretofore d e s c r i b e d .Th e v a l u e Rg A o which i s _ t h e t r a i l f o r t h e part i c u l a r type o f bomb a n d a i r s p e e d , average a lt i t u d e , a d e i n i t e atmospheric temperature, a n dwith objective a t sea l e v e l as shown n the u ppe r4 d i a g r a m m i a t i e i l l u s t r a t i o n o f F i g . 1 8 , i s d e t e rmined by s e t t i n g the t e r m i n a l v e l o c i t y s c a l e l 3 1a n d a i r speed index s xed t o the housing 2 3 .

1 0

1 5 *

20

' _and DEL-KV, r KVf and f the airplane i s dyinga d r i f t , t h e tangent o t t h e range a n g l e i s e q u a l30

3 5

s o

5 5

6 0

6 5

7 0

7 5

7/30/2019 Estopey 1925 US2118041

12/18

6I I f h i s v a l u e Rf A n ' . h o w e v e r , i s n o t c o r r e c t b u t

1 0

i s c o r r e c t e d s o a s t o b r i n g t h e p o i n t P . ; b e e n ' t oR ? a n d s i m u l t a n e o u s l y v i r o r n l t t o R 1 2 i n o r d e rt o c o r r e c t f o i v the atmospheric temperature a n df o r t h e h e i g h t o f t h e o b j e c t i v e above s e a l e v e l , t h i sb e i n g done by s e t t i n g t h e a i r d e n s i t y d i a l | 5 6 ont h e t e m p e r a t u r e i n d e x | 5 1 ; an d then t h e p o i n tRf i s moved back t o R 1 ' t o c o r r e c t f o r t h e a c t u a la l t i t u d e o f t h e a i r p l a n e a n d t h e p a r t i c u l a r t y p eo f t h e bomb. t h i s c o r r e c t i o n be l n g m a d e by c a m| 2 0 c o n t r o l l e d by a l t i t u d e s c a l e i l l o p e r a t e d byhandwheel | | | .Th e terminal v e l o c i t y i s s e t on a d r u m | 3 9 ( F i g .1 8 ) having a threaded p a r t | 4 0 f o r o p e r a t i n gw i t h a c r e w | 4 i . w h i c h e x t e n d s into t he h ou s i n ga n d c a r r i e s a p i v o t | 4 2 about whi c h the l i n k | 4 3i s r o t a t a b l e . T h e l i n i e y | 4 3 hasnrigid with i tan arm |44 on w h i c h i s provided a stud or arm| 4 5 . Screw | 4 | i s p r e v e n t e d Iromturning abouti t s a x i s by a n arm 4 6 whi c h b e a r s a g a i n s t twog u i d e b a r s | 4 1 . Th e s t u d | 6 2 o f s l i d e | 6 | i sshown i n p o s i t i o n . 1 I i n F i g . 1 8 . T h e c o r r e c t i o nobtained a t sea l e v e l by m e a n s o f a r m | 4 4 a n dp a r t | 4 | i s I b a m u l t i p l i e d by v a r i o u s l e v e r a g e s o nt h e s i g h t . o r R 2 A n ' on t h e ground a nd g i v e st h e tangent o f t h e t r a i l a n g l e f o r average a l t i t u d ef o r t h e p a r t i c u l a r t y p e o f bomb an d f o r t h e p a rv t l c n l a r a i r s p e e d .T h e c o r r e c t i o n Rf R i s o b t a i n e d b y s e t t i n gthe a i r d e n s i t y d i a l | 5 6 on temperature index| 6 1 i n accordance with t h e a c t u a l atmospheric

t em pe r a tu r e ,

7 0

The c o r r e c t i o n R R ? i s o b t a i n e d b y s e t t i n gthe a i r d e n s i t y d i a l | 5 6 on temperature index| 6 1 i n accordance with t h e height o f the o b j e c t i v e ,the d i a l | 5 6 cooperating with index | 5 1 i i x e d onh o u s i n g 2 3 and moving t h e l i n k | 6 3 through t h eg e a r s | 5 8 , | 5 9 , screw | 6 0 a n d s l i d i n g memb e r | 6 1c a r r y i n g stud | 6 2 about whi c h the l i n k | 4 3 rot a t e s . At s e a l e v e l a n d f o r p a r t i c u l a r temperat u r e s stud | 4 5 c a r r i e d by t h e a r m | 4 4 i s a t p o s it i o n b o . In turning the d i a l | 5 6 up t o a d e t e rmined temperature i n d e x v a l u e a t | 6 1 , t h e s t u d | 6 2 w i l l be s e t a t p o s i t i o n I I andsince stud | 4 2i s i i x e d . l e v e r | 4 3 w i l l rohtoabout t h e s t u d | 4 2 ,w l r l ' y i n s t h e right-hand end o f s t u d | 4 5 t o p o s it i o n b i f o r o b j e c t i v e a b o v e s e a l e v e l a n d f o ra c t u a l t e m p e r a t u r e .

A R i = K ( R i ~ A )Th e c o r r e c t i o n t h u s o b t a i n e d i s b o b 1 m u l t i p l i e dby v a r i o u s l e v e ra g e s on the bomb i g h t c o r r es p o n d i n g t o Rf Rf on t h e g r o u n d . The s t u d| 6 5 o ! d r i f t c o r r e c t i n g d e v i c e i s a t p o s i t i o n Ic o r r e s p o n d i n g t o d r i f t a n g l e e q u a l z e r o , a n dl e v e r | 6 3 p i v o t i n g about | 5 5 transmits the movem e n t o f | 4 5 t o | 6 4 whi c h pushes l e v e r | 6 5 a n ds l i d e 4 0 r e s p e c t i v e l y , s i n c e l i n k | 6 9 r i g i d w i t h >| 6 6 p i v o t s a b o u t | 6 8 . The s l i d e 4 i ! i s d i s p l a c e dl o n g i t u d i n a l l y a d i s t a n c e e q u a l t oR i L ? ?

As p r e v i o u s l y m e n t i o n e d t h e p o i n t Rf i s t h e nbrought t o p o i n t R l ' i n accordance with t h e act u a l a l t i t u d e o f the a i r p l a n e . Th e terminal vel o c i t y a n d a i r speed movements caused by p a r t| 4 1 c o r r e c t only the tangen ts o f the t r a i l anglef o r a n average a l t i t u d e , m a k i n g necessary a na u x i l i a r y correction f o r the actual t r a i l correct i o n i n accordance with a n y p a r t i c u l a r a l t i t u d e _

2 , 1 1 8 , 0 4 1o f bombing. This i s o b t a i n e d by means o f t h ea l t i t u d e cam | 2 0 , i i x e d on the shaft H8, w h i c hc a r r i e s a l t i t u d e s c a l e L | i 4 . The cam | 2 0 cooperates with th e stud |66 w h i c h i s at t ach ed to t h es l i d i n g m e m b e r | 6 7 c a r r y i n g a s t u d | 6 8 p i v o t a l l yi n t e r c o n n e c ti n g t h e l i n l ; | 6 9 t o t h e s l i d e . Th earm 6 5 i s r i g i d with l i n k | 6 9 , whi c h p i v o t s abouta x i s | 7 0 c a r r i e d by the arm ' l l w h i c h i s i i x e dt o t h e l o n g i t u d i n a l v s l i d e 4 0 . At a v e r a g e a l t i t u d e ,the s t u d | 6 8 i s a t p o s i t i o n I , a n d a t p o s i t i o n I If o r some p a r t i c u l a r higher a l t i t u d e . Th e d i spl a c eme n t of st ud | 6 8 from I t o I I causes the correction _R i R i > m ' ( R i A ) = K ( R i A )a n d the t o t a l c o r r e c t e d t r a i l w i l l be R i ' A o ' on themund;(see Fig. 1 8 ) . .When bomb in g a n o b j e c t i v e s i t u a t e d a t seal e v e l , from average a l t i t u d e a n d a t a . f i x e d t e mp e r a t u r e t h e > t r a i l c o r r e c t i o n i s Rf A n ' . W h e nbomb in g a n o b j e c t i v e s i t u a t e d at sea l e v e l fromsome average a l t i t u d e a n d un d e r some actualt e m p e r a t u r e t h e t r a i l c o r r e c t i o n i s R i A n ' .When ombing a n o b j e c t i v e s i t u a t e d above sea

l e v e l from an ave r a g e altitude and at somea c t u a l t e m p e r a t u r e t h e t r a i l c o r r e c t i o n i s R A .When ombing from some lower a l t i t u d e with theo b j e c t i v e above sea l e v e l a n d un d e r some actualtemperature the t r a i l c o r r e c t i o n w i l l be R r A o ' .Th e t o t a l c o r r e c t e d t r a i l m a d e by the s l i d e s| 6 1 a n d | 6 | , a n d by the rod | 4 | i s , t h e r e f o r e ,R i ' A n . This c o r r e c t e d t r a i l l i n e , however, i s noton the ground course l i n e , a n d t o c o r r e c t thet r a i l f o r the ground course com pone n t or r e l at i v e component i f f l y i n g along a n a n g le o f a pproach with r e s p e c t t o the p ath o f a movingobj e c t l v e . ' s l i d e m e a n s a re provided t o accomplisht h i s automatically i n accordance with the a n g ular movements of the s i g h t i n g d e v i c e , or i nother words in accordance with the d r i f t a n g l e ,o r d r i f t a n g l e p l u s angle o f approach i f bombinga moving o b j e c t i v e .The e n t i r e s t and ard2| may be s wu n g abouta x i s of t h e post 2 2 by means of a s u i t a b l e h a n d l e| 1 5 s o that the sighting l i n e o f the t e l e s c o p e maypoint d i r e c t l y a t the o b j e c t i v e , i n c a s e there i s across w i n d prevailing or cross w i n d combi n e d withangle o f approach Ao'OUo. This swingi ng o f thestandard 2 | , a n d c o n s e q u e n t l y o f t h e s u p p o r t i n ghousing 2 3 , o p e r a t e s t h e p i l o t d i r e c t o r showni n F i g s . 5 and.9, a n d a l s o c a u s e s the r o t a t i o no f the b e v e l gear | 4 9 ( F i g . 1 8 ) ; the b e v e l gear| 4 8 being Xed on stud i ' l w h i c h h a s a ke y | 1 6

1 0

20

setting i n s l o t | ' | ' l of post 22 w h i c h i s x e d to the Y f u s e l a g e o f the a i r p l a n e , t h u s p r e v e n t i n g g e a r| 4 6 from turning about i t s a x i s w h e n the standard 2 | i s swung. T h e r e f o r e , the swinging o fthe s t a n d a r d 2 | causes the rotation o f b e v e lgear | 4 9 , the s l i d i n g gimbal j o i n t | 5 0 a n d t h ecam I S I cooperating with l e v e r | 5 2 , s e e F i g s . 1 8a n d 6 , which > p i v o t s about a x i s | 5 3 i i x e d t o t h ehousing 2 3 . T h e fork o f l e v e r | 5 2 c o o p e r a t e swith a s l i d i n g member |5 4 on w h i c h i s fixed astud | 5 5 , about whi c h p i v o t s l e v e r | 6 3 . T h e r otation o f cam S i causes the displa cement of stud| 5 5 from p o s i t i o n I > c o r r e s p o n d i n g t o d r i f t >angle=zero t o p o s i t i o n 1 I corresponding t o acertain d r i f t angle, or a certain d r i f t a n g l e combined with a . certainangle o f approach An'OUo.indicated 1 n F i g s . 21 a n d 2 2 , thus m a k i n g theground or r e l a t i v e component of the t r a i l w h i c h 75

7/30/2019 Estopey 1925 US2118041

13/18

10

1 6

20

50

5 5

60

65

2 , 1 1 8 , 0 4 1are: RiAo' cos An'ON a n d the r e l a t i v e component Ri'Aa' c o s NOUa w h e n dying a d r i f t a n ddying along a n angle o f approach An'OUo i n respect to amovingobjective.The c o r r e c t i o n R A u s i n A n ' G N J . k . k / o rz e t e l s i n NoUoJcJoJo s o b t a i n e d by t h e ma`t i o n of the cam | 7 8 , whi c h p i v o t s about a x i s| 1 9 i l x e d to the housing 2 3 . The cam | 7 8 i sd r i v e n by b e v e l gear | 3 9 , | 8 1 g e a r s | 8 2 a n d | 2 3 ;g e a r |83 b e i n g fixed on t h e shaft |8 4 w h i c h car- _r i e s cam | 5 | , s o that w h e n swinging the standard 2 | about i t s v e r t i c a l p o s t 2 2 , cam 1 8 , r o t a t e s ~through a n a n g l e S e q u a l t o t h e d r i f t a n g l eNOAn', or through a n angle S ' e q u a l t o the d r i f tangle p l u s angle o f approach, s o as t o keep thegeometric plane O e - N e o f the cam | 1 8 alwaysp a r a l l e l t o the a x i s ON f the f u s e l a g e > o f thea i r c r a f t whatever t h e d r i f t a n g l e o r a n g l e o fapproach may e .Thecam 1 8 cooperates with a stud | 8 5 f i x e d t othe t r a n s v e r s e s l i d e 3 8 c a r r y i n g the p i v o t 3 1a n d p i n 3 5 o f t h e s i g h t i n g m ember 2 5 .Since BI=a s the ground component o f thet r a i l reduced t o the h e i g h t hof he i n s t r u m e n t ,or GnO: t he r e l a t i v e com pone n t of the t r a i l r educed t o the height h o f the instrument, a n ds i n c e BI s m ak i n g a n angle S with r e s p e c t t o thef u s e l a g e o r G00; making an a n g l e S ' with r e s p e c tt o the f u s e l a g e , a n d s i n c e the working s u r f a c eOeNe o f the cam 1 8 i s always maintained p a r a l l e lt o the f u s e l a g e of the a i r c r a f t makin g a n angle Sor S ' with the l o n g i t u d i n a l a x i s o f the s i g h t ,th e s l i d e 38 w i l l move a t e r a l l y a distance corresponding t o

fo r t h e relative deflection. 'Since the bearings 4 2 a n d 33 o f the frame 3 Sp r o v i d e f o r r o t a t i o n a l movements about a x i s 3 2 ,the l a t e r a l displa cement f r ' or e 0 0 3 o f the h inge3 ' ! carrying the upper part c i the frame 3 5 w i l lcause the l a t e r a l i n c l i n a t i o n o f the o p t i c a l s i g h ti n g l i n e along a plane Ai'ORi making a d e e c t - ving angle RORo' with the v e r t i c a l R'Oi o r w i l lcause the r e l a t i v e l a t e r a l i n c l i n a t i o n of the o p t i c a ls i g h t i n g l i n e along a plane EoOoBo makin g a r e l at i v e d e f l e c t i n g a n g l e EaOoO with t h e v e r t i c a lO 5 0 thus mak i n g automati cy the d e f l e c t i o nc o r r e c t i o n according t o a n y p a r t i c u l a r t y p e o fbomb, a n y p a r t i c u l a r h e i g h t , time l a g , d r i f t a n g l e ,a n g l e o f approach, s p e e d a n d d i r e c t i o n o f movingo b j e c t i v e , a i r s p e e d , ground p e e d , e l e v a t i o n o f theo b j e c t i v e above se a l e v e l , a n d atmospheric t e mpe rature affecting terminalv v e l o c i t y . .I t w i l l thus be under stood t h at by means ofthe cam 7 3 , a certain l a t e r a l movement of theupper en d o f the s i g h t i n g m em be r i s o b t a i n e d ,'and b y means of the cam 5 ! a n d i t s s l i d e | 5 4 . ac e rt a i n l o n g i t u d i n a l movement o f the upper en dof the s i g h t i n g m e m b e r s o b t a i n e d , a n d t o g e t h e rmake c o r r e ct i o n R i A o ' s i n NOAo' or R i ' A n ' s i nNOUo and Ri'Ao' cos NOAo or RiAo' c os NOUow h e n the bomb i s r e l e a s e d , t h e r e f o r e , i t w i l lstrike t h e objective R1 i n stea d of t h e t h e c- `r e t i c a l o b j e c t i v e p o s i t i o n A 0 ' . Th e a x i s 3 l c a r r ying the hinge c i the frame 3 S i s movable l o n g it u d i n a l l y f o r s l i g h t l o n g i t u d i n a l d i s p l a c e m e n t b .o f the t e l e s c o p e i n order t o compensate f o r s l i g h tincrement o f r a n g e . l T h i s o p e r a t i o n , c a l l e d dropping bomb s h o r t " , i s o b t a i n e d by a s p e c i a l s c a l egraduated in r e e t s e t on a drum 3 3 ( F i g . 2 3 ) t i r e d v

7t o the screw | 8 5 which c o o p e r a t e s with the nutxed o 3l. Th e s e t t i n g o i the d r u m | 8 8 ( s e e F i g . 2 3 ) withr e s p e c t t o k s c a l e | 8 1 which i s xed t o t h e o p t i c a ld e v i c e 2 S i s m a d e by ' t u r n i n g knob | 8 5 . ' Th er o t a t i o n a l adjustment o f the d r u m a n d screw| 8 5 moves the o p t i c a l device a distance b 5 a n dincreasing the range by a corresponding amount,since t h i s rotation of the s c r ew moves the o p t i c a ld e v i c e b o d i l y with r e s p e c t t o t h e frame 3 E .Another i m e t h o d o f d r o p p i n g bomb s h o r t "when automatic r e l e a s e i s u s e d , c a n v be obtainedby estimating ashort d i s t a n c e on the ground`w h e n s i g h t i n g through t h e t e l e s c o p e a n d then"w h e n s a i d s h o r t d i s t a n c e i s p r o p e r l y e s t i m a t e d ,p u l l s w i f t l y t h e main c o n t r o l 8 | which throughthe t r a i n o f g e a r s 8 5 , 8 8 , 8 l , 8 8 , 1 8 , 1 1 , 1 5 , l d , l 2 ,1 | , the d i f f e r e n t i a l 9 2 a n d g e a r s | 3 3 , | 3 4 a n d| 3 5 , w i l l c r e a t e a n extra r o t a t i o n o f s c r e w 3 2a n d r a p i d l y b r i n g c o n t a c t s 9 9 a n d 9 8 t o g e t h e r

15

20whi c h e n e r g i z e s m a g n e t 2 0 9 and r e l e a s e s . t h ebomb. YDuring t h a t s h o r t i n s t a n t i n dropping ' " s h o r t "the r a p i d p u l l i n g o f c o n t r o l 8 | a l s o i n c r e a s e s,the s p e e d o f t h e nut 3 | a n d s i m u l t a n e o u s l ypushes t h e timing l e v e r | 2 9 > f o r w a r d , a n d t h ec o n t a c t 9 3 r e s p e c t i v e l y thus dropping bomb s h o r t l without delay a n d a t the w i l l o f thebomber. T h e stud | 8 9 xed on d r u m | 3 1 a n d' s t o p | 9 0 i x e d on the housing 2 3 p r e v e n t s t h edrum from being turned more tha n 3 6 0 .To compensate f o r s h i f t i n g o f w e i g h t w h i l e t h ep o s i t i o n o f the nut 3 | a n d o f t h e s i g h t i n g mem

25

s o

ber 25 i s b e i n g c h a n g e d , and to m a i n t a i n thec e n t e r o f g r a v i t y o f the suspended housing 2 3c o n s t a n t , a compensating weight | 9 | ( F i g . 4 )i s p r o v i d e d , t h i s compensating w e i g h t b e i n gmounted on a s c r e w | 9 2 a n d connect ed by a s u i table means o the n ut 3 i so that as the n ut movestoward the c e n t e r o f t h e housing 2 3 t h e weight| 9 | w i l l a l s o move the proper distance t o compensate f o r s h i f t i n g o f t h e e f f e c t i v e w e i g h t s o fthese v a r i o u s p a r t s , a n d maintain the c e n t e r o fg r a v i t y o i the apparatus c o n s t a n t . As showng e a r |35 iixed on the mic rometr i c s c r e w 32 rot a t e s screw | 9 2 through g e a r - | 9 3 . At the baseo f the housing 2 3 i s a s l o t | 9 4 i n w h i c h s l i d e sstud | 9 5 whi c h s f i x e d t o the nut carrying weight| 9 | , t h u s p r e v e n t i n g t h e w e i g h t from t u r n i n gabout i t s a x i s .Movement o i the timing memb e r 9 5 , g u i d ebracket 5 5 , a n d s l i d e 9 1 i s a l s o vcompensated f o rby means f a w e i g h t | 9 6 w h i c h i s i n threadedengagement i t h t he s c r e w i 3 so t h at as t h e t i ming memb e r 9 5 a n d i t s a s s o c i a t e d p a r t s movetoward the l e f t i n F i g . 4 , t h e weight | 9 3 w i l l b emoved toward the r i g h t a proportionate amountt o prevent t h e unbalancing o f t h e suspendedhousing 2 3 . To prevent the weight | 9 6 fromturning with the screw i 3 the former i s guidedby a s t u d | 9 7 which moves f r e e l y along g u i d e | 9 8 a n d which prevents r o t a t i o n a l movementsabout t h e axis o f th e s c r ew ' | 3 .Th e s u p p o r t i n g housing 2 3 , although mountedf o r f r e e swinging movements both l a t e r a l l y a n d. l o n g i t u d i n a l l y o f the a i r c r a f t , i s s t a b i l i z e d s othat rapid or sudden changes i n p o s i t i o n o i the a i r c r a f t may be substantially i n e i i e c t i v e on thehousing 2 3 . Th e upper part o f t h e housing 2 3p r o j e c t s upwardly a t | 9 9 a n d c a r r i e s a p o s t 2 0 Bwh ich i s u n i v e r s a l l y connected a t 2 6 | t o thepiston rod 23 o f a i s t o n operating i n a cylinder285 t o provide a d a s h pot d a m p i n g m e a n s f o rdamping t h e movement o f t h e s u p p o r t i n g housi n g 2 3 . A i m i l a r dash pot 2 0 6 i s p r o v i d e d on

35

40

45

50

65

7/30/2019 Estopey 1925 US2118041

14/18

t h e t o p o f the standard 2 | above the s u p p o r t i n ghousing a n d e f f e c t i v e a t 9 0 from the dash p o t r s t mentioned. Th e d a sh pot c o n s t r u c t i o n i sa l l c a r r l e d b y the standard 2 | , the p a r t s c a rl t i e d by the movable housing 2 3 being o f comp a r a t i v e l y s i m p l e a n d l i g h t c o n s t r u c t i o n so t h a tlt h e suspended p a r t o f t h e bomb s i g h t w i l l n o tbe m a t e r i a l l y h e a v i e r by r e a s o n o f t h e dampingdevice. 1 0 'lhe bomb 28 1 ( F i g . 4) i s mounted on a suit-able-rack 20 8 a n d i s r e l e a s a b l e from t h i s r a ckwhen a solenoid or elect romagnet 20 9 i s energ i z e d - One i d e o f t h i s electromagnet 208 i s connected to on e s i d e o f the battery 45 the otherI5 s i d e of the s o l e n o i d being connected t o the contact $9 on t h e movabl e nut 3 | . The other sideofthe attery i s connected t o a disconnecting4'switch 2 l i ! which however i s closed when t h eapparatus i s t o be u s e d . T h e switch 2 | ! ! i s inso turn connected t o t h e motor 4 5 through the r e g ~u l a t i n g c o n t a c t s 4 8 , a n d a l s o connected t o e l e ctromagnets 2H a n d 2 | 8 a n d r e l e a s i n g s i g n a ll i g h t | 0 2 , as shown. Theelectromagnet 2 | | i sconnectedto t h e s t o p c o n t a c t 9 8 . When the electromagnet 2H s e n e r g i z e d thea rm a tur e of a t a r t i n g l e v e r 2|2 i s a t t r a c t e d .The lever 2| 2 i s provided w i t h a hook 2| 3 andcooperates with a st op 214 s l i d a b l y mounted onthe s h a f t 1 S .I0 t o t h i s stop 2|4 toward the l e f t by endwise movem e n ts of a spindle 2|5 w h i c h i s provided with aknob 2|6 a t i t s outer end, in a p o s i t i o n t o ber e a d i l y pressed inwardly by the h a n d o f theo p e r a t o r w h e n h e g r a s p s hold o f the l e v e r 3 | .l 5 A p r i n g 2 i ? normally p r e s s e s l t h e knob 2|6andthe s p i n d l e 2 | 5 toward t h e r i g h t , t e n d i n g t o h o l dt h e s t o p 2 1 4 toward t h e r i g h t i n F i g . 4 , i n whichp o s i t i o n ' t h e c o n t a c t 2 5 D w i l l be o p e n - c i r c u i t e dv i n i n o p e r a t i v e p o s i t i o n . However, when t h e nob 2|B i s pressed inwardly t o the p o s i t i o ns how n in F i g . 4 the stop 2|4 w i l l r i d e over thei n c l i n e d cam u r f a c e o f the l e v e r 2|3 a n d c l o s et h e c o n t a c t 2 5 8 , t h e s t o p 2 i 4 b e i n g held i n i t se f f e c t i v e p o s i t i o n a g a i n s t t h e a c t i o n o f the s p r i n g | 1 , by means f the hook on the l e v e r 2 | 3 .T h e m e c h a n i s m o f the p i l o t d i r e c t i n g d e v i c ei s enclosed in a housing 2|3 f i x e d to the standa r d 2 | whi c h i s r o t a t a b l y mounted on the p o s t2 2 . Th i s mechanism comprises a Worm ea r 2|95 0 f i x e d t o a . sleeve 220 rotatably mount ed on thepost 2 2 . A r i c t i o n spring 2 2 | xed'at on e en dto the p o s t 2 2 prevents t h e standard 2 | fromt u r n i n g f r e e l y on t h e s u p p o r t i n g p o s t 2 2 , s e e F i g .1 1 . On the shaft 223 guiding the worm 222 i s55 x e d a pinion 224 m e s h i n g with gear 225 a n dturning i n bearings 2 2 6 . T h e shaft 2 2 1 i s f i x e dto the gear 225 a n d the c l u t c h part 2 2 8 . Atoothed wheel 2 2 9 t o g e t h e r with c l u t c h p a r t 2 3 Dturns f r e e l y about the s h a f t 2 2 1 . Clutch parts5 0 23| a n d 232 a re x e d t o th e control | 1 5 w h i c h i sr o t a t a b l y a n d l o n g i t u d i n a l l y s l i d a b l e i n the beari n g 2 3 3 provided i n t h e housing 2 | S . A p r i n g234 i s provided t o normally e n g a g e the c l u t c h e s228 and 23! in a constant manner so that th e6 5 c o n t r o l 1 1 5 i s i n constant en g a g em en t with thegear 225 a n d th e worm gear 2 | 9 .On shaft 235 w h i c h turns i n the bearings i nt he housing 2| 8 ar e x e d l e v e r s 236 a n d 231 anda n e l e c t r i c contact l e v e r 2 3 6 . The l e v e r 25 6 i s70 i n engagement with t h e t e e t h o r ' t o o t h e d wheel2 2 8 . One e n d o f the spring 239 i s f i x e d t o thehousing 213 while i t s other e n d i s atta ched t o thel e v e r 2 3 1 , thus normally urging the c o n t a c t l e v e r238 t o a . central p o s i t i o n , i n a y i e l d i n g m a n n e r , fl e a c h t ime t h e l e v e r 236 passes over a tooth of

S l i d i n g movements are imparted

k s t r a i g h t c o u r s e .

V8- ' 2,118,041t h e w h e e i 2 2 3 . Th e c o n t a c t l e v e r 2 3 8 thus p a s s e sa l t e r n a t e l y from a c e n t r a l Contact 2 4 0 t o a r i g h th a n d contact 2 4 | i f the c o n t r o l | 1 5 i s turned t othe r i g h t , a n d from the c e n t r a l contact 2 4 B t oA t h e l e f t contact 2 4 2 i f the c o n t r o l | 1 5 turns i n 5the other d i r e c t i o n . T h e c e n t r a l contact 240 i se l e c t r i c a l l y connected t o a c e n t r a l lamp 2 4 3 , s e eF i g . l 0 , p r e f e r a b l y c o l o r e d w h i t e , and m e a n i n g f l y s t r a i g h t c o u r s e , wh e n t h i s l amp 2 4 3 i s i l l uminated. Th e l e f t c o n t a c t 2 4 2 i s connected t o l othe left-hand l am p 2 4 4 , having a s u i t a b l e c o l o ra n d i n d i c a t i n g t o the p i l o t t h a t h e should turnt he a i r c r a f t toward t h e l e f t s i d e , wh e n t h i s l ampi s i l l u m i n a t e d . T h e contact 2 4 ! i s connected t othe right-hand lamp 2 4 5 i n d i c a t i n g t o t h e p i l o t 1 5that h e should turn toward the r i g h t w h e n t h i sl am p s i l l u m i n a t e d . ' I ' h e s e t h r e e lamps, a l l t h r e ed i f f e r e n t colorsare enclosed i n a ousing 246wh ich i s l o c a t e d on the p i l o t ' s instrument b o a r d .An l e c t r i c c a b l e 2 4 1 connects thebomb i g h t 20e l e c t r i c a l l y t o the b a t t e r y , t h e bomb r e l e a s i n g dev i c e a n d the p i l o t d i r e c t o r i n d i c a t o r .In o p e r a t i o n , the p i l o t d i r e c t o r a u t o m a t i c a l l yt e l l s thepilot i n whi c h d i r e c t i o n h e should turno r whether h e should f l y s t r a i g h t ahead, t h e s e 2 5indicationsbeing given t o h i m automatically a sthe _bomber f o l l o w s t h e o b j e c t i v e a nd t u r n s t h ebomb s i g h t _ a b o u t i t s v e r t i c a l a x i s , or'keeps i t 's t a t i o n a r y with r e s p e c t t o t u r n i n g movements.Assume the a i r c r a f t i s f l y i n g ' o f i i t s c o u r s e , f o r 30example t ow a r d t h e l e f t . The c e n t r a l con ta c tl e v e r 2 3 8 ha s been a t i ts neutralposition a n d thel amp 2 4 3 has been l i t , t h e p i l o t having ilown a

The omber now, as the a i rc r a f t i s f l y i n g c i c o u r s e , toward the l e f t , p l a c e s 3the s i g h t i n g l i n e on the t a r g e t by swinging thestandard 2 | about the p o s t 2 2 by pushing c o n t r o lknob | 1 5 toward the t a r g e t (right-hand s i d e )without turning | 1 5 about i t s a x i s . T h e l am p243 i s s t i l l l i t a n d the a i r c r a f t i s s t i l l f l y i n g i n 40a straight l i n e o i course as just s t a t e d . T h e .bomber then f o l l o w s the apparent a n d d r i f t i n gmotion o f t h e t a r g e t by pushing a nd t u r n i n gthe c o n t r o l | 1 5 about i t s a x i s ; i n doing whi c hthe clutch parts 23S-_232 are e n g a g e d ( c l u t c h 45p a r t s 23|-228 remaining engaged) s o that thetoothed wheel 2 2 8 i s r o t a t e d , the t e e t h o f t h i swheel d i s p l a c i n g the l e v e r 2 3 6 toward t h e r i g h th a n d s i d e , thus moving the contact l e v e r 2 3 8over to contact 2 4 | a n d l i g h t i n g a n d causing the 50e n e r g i z a t i o n o f t h e l amp 2 4 5 , t h e l amp 2 4 3 b ei n g d e e n e r g i z e d . This i n d i c a t e s t o t h e p i l o t t h a th e should turn toward the r i g h t , the i n d i c a t i o nbeing a u t o m a t i c . T h e bomber then r e l e a s e s t h ec o n t r o l | 1 5 whi c h disengages the c l u t c h 232-238 5 5a n d the c e n t r a l lamp 2 4 3 i s ' a g a i n i l l u m i n a t e dand lamp 2 4 5 d e e ne r g i z e d .Th e course o f the a i r c r a f t i s thus p a r t i a l l y` c o r r e c t e d , t h e bomber a g a i n a d j u s t i n g t h e s i g h t ~' i n g l i n e on t h e target b y turning t he control 6oabout i t s a x i s . without g i v i n g a n y s i g n a l o ft u r n i n g . T h e n w h e n the t a r g e t appears t o bed r i f t i n g , th e bomb e r pushes a n d turns the con~t r o l H5 to give t he ne ce s s ary signal t h at thea i r c r a f t should be turned. Th e f a s t e r the t a r g e t 6 5d r i f t s from t h e s i g h t i n g l i n e o f t h e t e l e s c o p e ,the more rapidly the a l t e r n a t e energization o fth e l am p s 243 a n d 245 or 243 a n d 244 w i l l takep l a c e . Th e speed at wh ich the a l t e r n a t i o n s o the right-h and l am p or the left-hand l am p withthe c e n t r a l l a m p t a k e s > p l a c e i n d i c a t e s theamount of turn required._ A very r a p i d corr e c t i o n o f the a i r c r a f t with r e s p e c t t o the t a r g e tcan thus be obtained. ' ,Th e ~ o p e r a t i o n o f the d e v i c e i s as f o l l o w s : 7 5

i

7/30/2019 Estopey 1925 US2118041

15/18

1 5

1 5

2,118,041Th e s w i t c h 2 f ! ! b e i n g c l o s e d , t h e t r a i l c o r r e c t i o na n d other c o r r e c t i o n s a r e m a d e by s u i t a b l y s e t - t i n g d rum | 3 1 , s c a l e | 5 1 a n d s c a l e | 8 8 i f i t i sd e s i r e d t o drop bomb'ahead. T h e n the p i c kup a n g l e i s s e t by m e a n s o f the s c a l e 8 2 a n di n d e x 6 5 by t u r n i n g c o n t r o l 6 l which throughf r i c t i o n c l u t c h 6 8 , g e a r s 8 8 , ' l 2 a n d d i i l e r e n t i a l8 | d i s p l a c e s the n ut 3 | forward or backward.Th e nut 3 | i s c a r r y i n g ' t h e t e l e s c o p e 2 5 ; ' I h estandard 2 | i s then swung v a b o u t the a x i s o fthe post 22 t o make course correction a s abovedescribed u n t i l the o b j e c t i v e moves d i r e c t l y t owards t h e o b s e r v e r wh e n s i g h t i n g along thet e l e s c o p e or the s i g h t i n g m e m b e r 2 l i . V Th ebomber then s y n c h r o n i z e s themovement o f thes i g h t with t h e o b j e c t i v e . He i r s t g r a s p s theh andle 8 | with h i s h a n d a n d i n doing s o h en a t u r a l l y p r e s s e s inwardly on the knob 2 | | vt o cause the s p i n d l e 2|5 t o move inwardly a n dmove the s l i d i n g stop 2H so that the spring2 1 8 may push the hooked l e v e r 2H upward t omaintain s t o p 2M in hooked o r e f f e c t i v e p o s ition. W h e n b e i n g engaged by hook 2 | 3 , t h e c o n i c a lp a r t o f t h e s l i d i n g s t o p 2 l 4 pushesup t h e s p r i n gcontact 2&8 m a k i n g contact with a n i n s u l a t e dcontact 2 5 D connected t o s o l e n o i d s 2 | | a n d 2|8w h i c h are i n p a r a l l e l , a n d simultaneously energ i z e s t h e motor 4 6 through r e g u l a t o r 4 1 . Th e.bomber then s i g h t s i n the t e l e s c o p e 2 6 t o s e ewhether or not the o p t i c a l lineis moving i nsynchronism with t h e o b j e c t i v e . I f n o t , thebomber p u l l s o r pushes handle 8 | which, throught h e g e a r s 8 5 , 8 5 , 8 T , 5 8 , 1 8 , 1 1 , 1 5 , 7 4 , ' 1 2 , and 1 L . ,v a r i e s r a p i d l y the-speed o f r o t a t i o n o ! t h e mic r o m e t r i c s c r e w 3 2 , by v a r y i n g t h e v a r i a b l e s p e e dconnection between t h e . motor a n d the screw 3 2 .S i m u l t a n e o u s l y , i n v a r y i n g t h e speed o f screw32 by operation o i ' h a n d l e 8 , through d i f f e r e n t i a l82 a n d ge ars | 3 3 , | 3 4 , a n d | 3 5 , t he n ut 3 | car r l e d b y s c r e w 3 2 w i l l be stepped forward o rb a c k w a r d , t h u s c a t c h i n g t h e t a r g e t r a p i d l y anda u t o m a t i c a l l y with r e s p e c t t o the r e c t i c l e o f t e l es copeV 26 . For i l n e s y n c h r o n i z i n g r e g u l a t i o n , t h e bomberturns-lmob 8 2 w h i c h , t h r o u g h d i e r e n t i a l 8 9 ,g e a r s S 8 , 9 | , 1 8 , 1 T , 1 6 , 1 t , 1 2 , and 1 | , v a r i e ss l o w l y the speed o f > r o t a t i o n o f the micrometrics c r e w 32 and as stated before. t h e n ut movesforward o r backward, thus c a t c h i n g automatic a l l y the t a r g e t i n _ r e s p e c t t o t h e r e c t i c l e o f t h et e le s cope. .This r e g u l a t i o n o f knob 8 2 i s continued u n t i lthe o p t i c a l l i n e o f the t e l e s c o p e 2 6 remains sync h r o n l z e d with t h e o b j e c t i v e , a nd i n synchroniz ing the s i g h t s with the o b j e c t i v e i t W i l l be un d e rs t o o d t h a t the bomber has acc omplished autom a t i c a l l y t h e adjustment o f t h e timing memb e rs o that the l a t t e r i s properly s e t f o r the r e l e a s e o fthe `bomb a t the proper i n s t a n t . Th e bombermerely k e e p s r e g u l a t i n g t h e knob 8 2 t o maintains y n c h r o n i z a t i o n o f t h e s i g h t s an d t h e o b j e c t i v eu n t i l the c o n t a c t s 9 8 a n d S 9 engage.An n s t a n t before c o n t a c t s 9 8 a n d 9 8 engage,c o n t a c t 9 8 engages with warning c o n t a c t | 2 8whi c h l i g h t s the w arning l amp l i l i i n the t e l e

scope 2 5 .When o n t a c t s 9 S a n d 8 . 8 engage, t i s t h e bombr e l e a s i n g t i m e , and v r e l e a s i n g s i g n a l lamp | 6 2i n d i c a t e s t o the p i l o t that the bomb hould be r el e a s e d i f r e l e a s i n g i s t o be m a d e by hand, o r i n d icates t o the bomber that the bomb h a s b e e n r el e a s e d i f s a i d o p e r a t i o n i s m a d e a u t o m a t i c a l l y .When h i s occurs a c i r c u i t i s c o m p l e t e d t h rou g ht h e b a t t e r y 8 , t h e s o l e n o i d o r e l e c t r o m a g n e t 2 8 9 ,

9and through t h e electromgnet 2 | . t h e r e s u l t i n g ~ t h e i n s t a n t a n e o u s dropping i ' t h e bomb.Another r e s u l t i s the a t t r a c t i o n a n d loweringo f t h e hook 2 | 3 , due t o e n e r g i z a t i o n o f t h e e l e ctromagnet 2H which t h u s r e l e a s e s s l i d i n g hookstop 2H hi c h c u t s the c i r c u i t b e t w e e n c o n t a c t s2 4 8 a n d 2 5 0 , t h u s i n t e r r u p t i n g t h e c i r c u i t t h r o u g hs i g n a l lamps | 8 | and | 0 2 and through motor 4 8which s t o p s .Another r e s u l t o f the engagement o f c o n t a c t s8 8 a n d 9 9 i s t h e e n e r g i z a t i o n o f t h e s o l e n o i d 2 | 8which a u t o m a t i c a l l y p l a c e s the handle 8 | a t i t so r i g i n a l p o s i t i o n , a n d s i m u l t a n e o u s l y p l a c e s t h etiming l e v e r 8 5 i n a normal v e r t i c a l positiomthuss e p a r a t i n g c o n t a ct s 9 8 from 5 9 , p r e v e n t i n g t h eaccidental r e l e a s e o f another bomb f the bombera c c i d e n t a l l y p u s h e s knob 2 | 6 , a n d p r e v e n t i n gjammi n g o f t h e a p p a r a t u s by a c c i d e n t a l s u b s equent o p e r a t i o n o f c o n t r o l 8 | .s o l e n o i d 2 | 8 i s connected t o the handle 8 | bymeans of a s t e e l ribbon 2 2 , on e e n d of w h i c h i sf i x e d t o the p l u n g e r , the other end t o a stud 2 5 3 x e d t o the segment gear 8 5 s o that the return o fthe handle 8 | t o i t s normal p o s i t i o n may e acc o m p l l s h e d .To r e s e t the synchronizing nut 3 | s o that i ti s i n p o s i t i o n f o r a second bombing o p e r a t i o n , the screw 3 2 i s r o t a t e d manually by_handwheel6 1 t o p l a c e the o p t i c a l li n e o f t h e t e l e s c o p e a t t h eproper pick-up a n g l e . Then, t h e g e n e r a l o p e r at i o n s o f t h e s i g h t s a r e s t a r t e d a g a i n a s . J u S t d escribe-(L - .. V , .Th e o p e r a t i o n o f t h e d e v i c e i s q u i t e s i m p l e ,c o n s i d e r i n g t h e e x t r e m e l y a c c u r a t e r e s u l t s t h a tmay e obtained a n d t h e number o f c o r r e c t i o n

The plunger of

1 0

15

20

25

30

factors t h at a r e taken into consideration. Thep r o b a b i l i t y o f human r r o r s are t o a l a r g e parto b v i a t e d , a n d t h e apparatus may e o p e r a t e d veryq u i c k l y a n d y e t with extreme a c c u r a c y . Whilethe d e v i c e i s provided with a djustments f o r thec o r r e c t i o n o f many a c t o r s , i t w i l l b e apparentthat a l l o f t h e s e c o r r e c t i o n adjustments need notbe employed i ! i t i s d e s i r e d t o n e g l e c t the e r r o r s _a r i s i n g .' W h i l e t h e i ' o r m o i ' apparatus h e r e i n d e s c r i b e dconstitutes a preferred e m b o d i m e n t o! the inventiomit i s to be underst ood tha t the invention _i s not l i m i t e d to t h i s p r e c i s e form o f a p p a r a t u s ,a n d that changes may be m a d e t h e r e i n withoutdepart ing from he scope of the invention w h i c hi s d e f i n e d i n the appe nd ed c l a i m s .What s claimed i s :1 . In a s i g h t i n g d e v i c e o i the c l a s s d e s c r i b e d , amovable s i g h t i n g m e m b e r adapted t o b e t r a i n e don a n o b j e c t i v e t o f o l l o w the r e l a t i v e movementbetween a n o b j e c t i v e a n d the s i g h t i n g d e v i c e ,m e a n s f o r l a t e r a l l y a n g u l a r l y a d j u s t i n g s a i d

member t o ` c o m p e n s a t e for wind deflection andt r a i l c o r r e c t i o n , a n a d j u s t a b l e timing l e v e r , m e a n sf o r a d j u s t i n g a p o r t i o n o r " s a i d timing l e v e r i naccordance with v e r t i c a l e l e v a t i o n , m e a n s f o ra d j u s t i n g another p o r t i o n o f s a i d timing l e v e r i naccordance with the speed o f movement o i s a i ds i g h t i n g member, me a n s f o r c o n t ro l l i n g t h e s p e e do f movement i ' s a i d s i g h t i n g member, a n d m e a n sc o n t r o l l e d by s a i d s i g h t i n g memb e r a n d s a i d timVing l e v e r t o determine the moment o f bombrelease. l2 . In a sighting d e v i c e o f the c l a s s d e s c r i b e d , amovable sighting member a d a p t e d t o follow the .r e l a t i v e movement between a n o b j e c t i v e a n d the> s i g l r t i n g d e v i c e , a n a d j u s t a b l e timing member,m e a n s f o r a d j u s t i n g s a i d timing m em be r s o thati t i s s e t i n accordance with the proper time o fbomb r e l e a s e , supporting m e a n s i o r saidmem

5 5

7/30/2019 Estopey 1925 US2118041

16/18

1 Db e r s , s a i d t i m i n g member b e i n g m o v a b l e i n s a i ds u p p o r t i n g m ea n s t o unbalsnce t h e I s u p p o r t i n gmeans, a s t a n d a r d , a u n i ve r s a l c o n n e c t i o n betw e e n said standard a n d said s u p por t i n gm e a n s ,

5 damping means for damping t h e movements ofs a i d supporting means, a n d weight m e a n s c a r .ried b y said supporting means and operab ly c onnected t o on e o i s a i d m e m b e r s f o r automaticallycompensating weight unbalance due t o move~ments o f s a i d member.3 . In a s i g h t i n g d e v i c e o f the c l a s s d e s c r i b e d , aA movable sighting member a d a p t e d to follow therelative movement b e t w e e n an o b j e c t i v e and h e. sighting d e v i c e , a n adjustable timing m e m b e r .1 5 m e a n s f o r a d j u s t i n g s a i d timing m e m b e r s o thatthe proper moment o f bomb r e l e a s e i s d e t e rmined, power m e a n s f o r moving s a i d s i g h t i n gm e m b e r , speed c h a n g i n g mechanism e t we e n saidpower m e a n s a n d s a i d s i g h t i n g member, m a n u a l2 0 l y c o n t r o l l e d me a n s f o r a d j u s t i n g s a i d speedc ha n g i n g m e c h a n i s m t o cause the s i g h t i n g member t o : f o l l o w the r e l a t i v e movement between a no b j e c t i v e a n d the s i g h t i n g d e v i c e , m e a n s f o r ene r g i z l n g s a i d power m e a n s automatically upons t a r t i n g o p e r a t i o n o f s a i d manually c o n t r o l l e dmeans, a n d me a n s f o r a u t o m a t i c a l l y d e e ne r g i z i n gsaid pow e r means after a synchronizing operat i o n has been c o m p l e t e d .

1 0

4 . In a sighting d e v i c e of the c l a s s dcribed, a imovable sighting m e m b e r , an adjustable t imingmember, motor me a n s f o r moving s a i d s i g h t i n gmember, a n d a c o n t r o l d e v i c e f o r c o n t r o l l i n g thes p e e d o f s a i d s i g h t i n g member having p r o v i s i o no p e r a b l e a s a l e v e r f o r r a p i d l y c h anging the speedg 5 a n d a d d i t i o n a l m e a n s provided as a part o i > s a i d .. l e v e r for slowly changing the speed. -5 . In a bomb i g h t i n g d e v i c e o i . ' the c l a s s des c r i b e d , a movable s i g h t i n g member, m e a n s f o rc a u s i n g s a i d s i g h t i n g m ember t o f o l l o w t h e r e l a o t i v e movement between a n o b j e c t i v e a n d t h es i g h t i n g d e v i c e , a n a d j u s t a b l e timing m ember determining the mome n t c i bomb r e l e a s e , a s t a t i o nary s i g n in the s i g h t i n g i l e l d o f v i s i o n , a n d m e a n sf o r i l l u m i n a t i n g s a i d v s i g n s u b s t a n t i a l l y a t thetime o f bomb e l e a s e .6 . In a s i g h t i n g d e v i c e o t the c l a s s d e s c r i b e d ,a s i g h t i n g m e m b e r movablein accordance withthe r e l a t i v e movement between a n . o b k c t i v e a n dthe s i g h t i n g d e v i c e , a n a d j u s t a b l e timing m e n i - vb e r , an element o p e r a t e d by s a i d timing memb e ran d c o o p e r a t i n g w i t h s a i d ' s i g h t i n g m ember t odetermine t h e time f o r p r o j e c t i l e r e l e a s e , a n dmeans fo r a d j u s t i n g one of sa i d members manua l l y comprising a s e r i e s o f s e p a r a t e s c a l e s , a n da n a d j u s t a b l e index memb e r c o o p e r a t i n g t h e r ewith a n d having a s e r i e s o f openings that maybe brought i n t o view s e l e c t i v e l y , each s c a l e o ooperating with on e o f s a i d openings a n d v i s i b l et h e r e t h r o u g h .a movable s i g h t i n g member dapted to f o l l o w therelative movement b e t w e e n an objective and h e - .s i g h t i n g d e v i c e , m e a n s adjustably supporting on een d o f s a i d s i g h t i n g member o r h o r i z o n t a l movement, a n i n c l i n e d timing bar iulcrumed a t i t s .upper e n d , a h o r i z o n t a l l y , moving ' t i m i n g elementp o s i t i o n e d by a n g u l a r movement o f s a i d timingbar a n d cooperating with s a i d s i g h t i n g memberV t o determine the proper time o f bomb r e l e a s e . '"a n d m e a n s a d j u s t a b l y supporting the r u l e z - u mofs a i d t im i n g b a r for a d j u s tm e n t v e r t i c a l l y . _l 8 . In a sightingv device of t h e class described.a movable si g hti n g member d a p t e d to follow t h er e l a t i v e movement between a n o b j e c t i v e a n d theg 5 ` S i g h t i n g d e v i c e , means a d j u s t a b l y s u p p o r t i n g o n e

7 . 1 n a sighting device ot t h e c l a s s described, .

2 , 1 1 8 , 1 : 4 1en d o f s a i d s i g h t i n g y memb e r f o r h o r i z o n t a lmovement, an i n c l i n e d timing bar fulcrumed a ti t s upper e n d , a h o r i z o n t a l l y moving timing e l ement p o s i t i o n e d by a n g u l a r movement o f s a i dtiming bar ` , a n d c o o p e r a t i n g with s a i d s i g h t i n gmember t o determine the proper time o f bombr e l e a s e , me a n s a d j u s t a b l y s u p p o r t i n g t h e f u lc r u m o i ' s a i d t iming bar f o r adjustment v e r t ic a l l y , m e a n s f o r c o n t r o l l i n g the speed o f s a i dS i g h t i n g m ember i n c l u d i n g a manually p o s i t i o n ~able meansv a n d a variable speed d r i v e positioned

therefrom, and a compensating mechanism i n - _ _terconnecting s a i d manually po s i t i o n a b l e means a n d s a i d s i g h t i n g memb e r f o r a u t o m a t i c a l l y s t e pping t h e s i g h t i n g member forward o r backward

10

a s the s peed i s c h a n g e d to quickly move th e ds i g h t i n g m e m b e r toward t h e l i n e c i the t a r g e t .9 . In a s i g h t i n g d e v i c e o i the c l a s s d e s c r i b e d .a movable s i g h t i n g m e m b e r i n c l u d i n g a n o p t i c a lp a r t adapted t o be t r a i n e d on a n d f o l l o w t h emovements > o f an b j e c t i v e , a n adjustable tim 20ing m e m b e r , means f o r positioning said timingm ember i n accordance with the angular speedo f s a i d s i g h t i n g member n f o l l o w i n g a t a r g e t ,a n element operated by s a i d timing memb e r a n d_ e n g a g i n g with s a i d s i g h t i n g m em be r a t the timef o r p r o j e c t i l e r e l e a s e , a support f o r s a i d memb e r s , a p i v o t a l l y mounted frame c a r r y i n g s a i ds i g h t i n g member , a nd me a n s f o r t i l t i n g s a i dframe about a f o r e a n d a f t a x i s t o a u t o m a t i c a l l yt i l t s a i d o p t i c a l part i n accordance with windd e i l e c t i o n duetto the d r i f t angle a n d angle o fapproach o f t h e s i g h t i n g d e v i c e with r e s p e c t t ov t h e o b j e c t i v e .1 0 . A bomb i g h t i n g d e v i c e f o r a i r c r a f t c omp r i s i n g an a n g u l a r l y movable s i g h t i n g ` m emberadapted t o f o l l o w the r e l a t i v e movements betwe e n a n o b j e c t i v e a n d the s i g h t i n g d e v i c e , a na d j u s t a b l e t i m i n g member, m e a n s ' f o r ' > p o s i t i o ning s a i d timing m e m b e r i n accordance with theangular , s p e e d o f s a i d s i g h t i n g member'in i o llowing a t a r g e t , a n element o p e r a t e d by s e i d t i m - `i n g memb e r a n d engaging with s a i d s i g h t i n g

s o

member t t h e t ime for projectile r e l e a s e , a xedsupport, a housing a d j u s t a b l e on s a i d s u p p o r t .a n d c a r r y i n g s a i d members, a l o n g i t u d i n a l l y a r i - - lj u s t a b l e c a r r y i n g member t o which one p o r t i o no f s a i d s i g h t i n g m e m b e r i s p i v o t e d , m e a n s p i vo t a l l y s u p p o r t i n g another p o r t i o n o f s a i d s i g h ting member on s a i d housing f o r mov e m e n t abouta fore a n d a l t ' a x i s , m e a n s f o r moving s a i d carryi n g member l a t e r a l l y as said housing i s rotatedon s a i d support t o t i l t s a i d s i g h t i n g memberabout s a i d a x i s , a n d m e a n s f o r l o n g i t u d i n a l l ya d j u s t i n g s a i d c a r r y i n g m ember t o l o n g i t u d i n a l l ya d j u s t t h e s i g h t i n g memb e r w i t h o u t a l t e r a t i o nt o i t s angle o f t i l t .l 1 . - A bomb i g h t i n g d e v i c e f o r a i r c r a f t com-p r i s i n g a n a n g u l a r l y movable s i g h t i n g memb e radapted t o f o l l o w the r e l a t i v e movements betweena n o b j e c t i v e a n d the s i g h t i n g d e v i c e , a n a d j u s table timing memb er , m e a n s f o r p o s i t i o n i n g s a i dtiming member n accordance with the angularspeed of s a i d s i g h t i n g member n f o l l o w i n g a targ e t , a n element operated by s a i d timing m e m b e ra n d engaging with s a i d _ s i g h t i n g m e m b e r a t thetime f o r p r o j e c t i l e r e l e a s e . a s t a b i l i z e d supportf o r s a i d members, m e a n s r o t a t a b l y mounting s a i dsupport on a fixed v e r t i c a l a x i s , s l i d e means ope r a b l e i n accordance with r o t a t i o n a l movementof said support on smdxed vertical ev"a d l u s t a b l y t i l t i n g s a i d s i g h t i n g memr a t e r a l l ywith r e s p e c t t o the d i r e c t i o n o f t raveL and m e a n sconnected to said s l i d e means o r correcting t het r a i l deection i n accordance with the s i n e s o f

55

70

7 5

7/30/2019 Estopey 1925 US2118041

17/18

20

3 0

85

40

2 , 1 1 8 , 1 3 4 1t h e d r i f t angle a n d t h e angle o f approach a sthe support i s r o t a t e d on i t s v e r t i c a l a x i s .1 2 . In a s i g h t i n g d e v i c e o f the c l a s s d e s c r i b e d ,a movable s i g h t i n g memb e r adapted t o f o l l o wt h e r e l a t i v e movement` between a n o b j e c t i v e a n dt h e s i g h t i n g d e v i c e , an a d j u s t a b l e t i m i n g b a r ,m e a n s f o r manually a d j u s t i n g the upper endo f s a i d timing bar i n accordance with v e r t i c a le l e v a t i o n , m e a n s f o r adjustably s e t t i n g a n i nt e r m e d i a t e p o r t i o n o f s a i d timing bar i n accordance with the speed o f t h e movable s i g h t i n gmember. a timing element c o o p e r a t i n g with t h es i g h t i n g m e m b e r a n d p o s i t i o n e d by t h e l o w e r endo f s a i d timing b a r , a n d compensating me a n s f o rs a i d members f o r compensating f o r wind de?ection and trail correction. ~1 3 . In a s i g h t i n g d e v i c e o f the c l a s s d e s c r i b e d .a movable s i