US1136821A

US1136821A - Intermittent-grip device.

Info

Publication number: US1136821A
Application number: US81697814A
Authority: US
Inventors: Osmond E Loomis
Original assignee: IVAN THURSBY; OSCAR E ROUSH
Current assignee: IVAN THURSBY; OSCAR E ROUSH
Priority date: 1914-02-06
Filing date: 1914-02-06
Publication date: 1915-04-20
Anticipated expiration: 1932-04-20

Description

0. E. LOOMIS.

INTERMITTENT GRIP DEVICE. APPLICATION FILED FEB. s, 1914.

1,136,821 Patented Apr. 20, 1915.

2 SHEETS-SHEET 1.

/ It 7 l x 4 jnuc'nl'oz- 6 8 7 v Q 2% @d'mvwd'loam 11:

0. E. LOOMIS.

l-NTERMITTENT GRIP DEVICE.

APPLICATION FILED FEB. 6, 1914.

1,136,821, A Patented Apr. 20, 1915.

2 SHEETS-SHEET 2 UNITED STATES PATENT OFFICE.

OSMOND E. LOOMIS, OF AKRON, OHIO, ASSIGNOBI OF THREE-EIGHTHS TO IVAN THURSBY AND THREE-EIGHTH TO osfi'n E. EOUSH, OF

AKRON. omo.

INTERMIT'IENT-GRIP DEVICE.

Specification of Letters Patent.

Patented Apr. 20, 1915.

Application filed February 6, 1914. Serial No. 818,978.

the production of a device which is provided with simple and efiicient means for allowing the same to be turned and operated in either y direction.

' Another object of this invention is the production of an intermittent grip device aving a shifting plate which is adapted to shift the locking mechanism carried withinthe interior of the device for causing the same to operate in a desired direction.

With these andother objects this invention consists of certain novel combinations, constructions and arrangements of parts as will be hereinafter full ydescribed and claimed. 7

In the accompanying drawings :-Figure 1 is a side elevation of the intermittent grip device constructed in accordance with this invention and sho'win a stock carried thereby. Fig. 2 is a top p an view of the device. Fig. .3 is a section taken on the line 3-3 of Fig. 2. Fig. 4 is a section taken on the line 4-1 of Fig. 1. Fig. 5 is a section taken on the line 5 5 of Fig. 4. Fig. .6 isa top plan view of a certain head used in connection with this device. Fig.- 7 is a detailed pering plate.

Eitl

spective view of thelockin'g cam. Fig. 8 is a bottom plan view of the shiftingplate. Fig. 9 is a side elevation of the locking plate showing the locking pins carried thereby. Fig. 10 is a detailed peispective view of the trigger member used for operating the shift- Fig. 11 is a transverse section taken on the line 1l--11 of Fig. 3 looking in direction of the arrows- Referring to the accompanying drawings by numerals 1 designates the body of the intermittent grip device which is provided with a' reduced hollow portion 2 adapted to carrythc handle 3. TlllS body 1 is provided with a comparatively dee rounded pocket 4 which communicates wit the socket bv means of the enlarged o enin 6. A hollow in the body 1. This sleeve 7 is provided at one end with an enlarged head 9 having a notched portion and an elongated slot 11. this elongated slot 11 passing through the head 9. In order to rotate this sleeve '7 in a desired direction, it is provided with a groove 12 which communicates with the groove 13.f 'ormed in the locking cam 11. These

grooves

12 and 13 are adapted to carry the squared key 12 for holding the locking cam 14 in fixed engagement with the sleeve 7 thereby preventing the cam 14 from having an independent rotation relative to the sleeve Thiscain 14 is substantially triangular in shape and is provided with a central open ng 15 for the reception of the sleeve 7. Since the cam 14 fits within the pocket 4 it may easily rotate for the purpose of rotating the sleeve 7.

In order to rotate thecam 14 and sleeve 7 in the desired direction by means of the body 1 and the handle 3, the head 9 is provided with the circumferential groove 16 upon its inner face connected with the in terior of .the pocket 4. This groove 16 is adapted to receive the circular shifting plate 17 and this plate 17 is provided with a plurality of shifting pins 18. These pins 18 are fixedly secured to the plate 17 in pairs as clearly disclosed in Fig. 8. These pins 18 extend into the pocket 11 of the body 1 while an operating pin 19 is carried sons to extend from the opposite side of the plate 17. This operating pin 19 passes through the slot 11 formed in the head ,9 and carries at its outer end the trigger 20 having the beveled lips 21 adapted to fit in one of the beveled notches 22 formed in the head 9 and conuuunicating with the enlarged notch 10. The locking cam 14 is provided at each one of its free sides with an integral lug 23 which is provided with spring receiving pockets .24. Coiled springs 25 are carried within these pockets iii-and hear at their opposite ends upon the rollerbearings 26 thereby causing these roller bearings 26 to normally engage the locking pins 18. These roller bearings are loosely mounted within the pocket 4 and, therefore, are adapted to slide upon the inner portion of the shifting plate 17. as well as the interior of the pocket 4 and upon the cam 14. Then the head is in the position disclosed in Fig. 1 it will be ill) at one end upon the portion of the body 1 within the pocket 4.

\Vhenthrs device is to be. assembled,,the

locking cam may-be placed over the sleeve 7 so as to engage the head 9 thereof and be locked into engagement therewith by means of the lug 12'. This will cause each one of the three corners of the locking cam, t0 be positioned between a pair of the shlftmg pins as clearly disclosed in Fig. 5. The

springs 25 .may then be placed within thepockets 24: of the integral lugs 23 at which sleeve 7 by means of the reduced threaded end 8 thereof. This stock 28 .maybe provided with a central opening 29 forthe re ception of the pin or'drill 30. It will be seen by referring to Fig. 3 that the inner end of" this pin or drill 30 extends into the reduced aperture 31 formed in the lower end of the sleeve 7. This portion of the sleeve is rovided with alined slots 32. When it is des red to usethe device without the stock 28 the stock may be removed at which time a bit or pin mabe positioned within the aperture 31,

an the device may be operated in the usual manner for rotating the bit or pin. The bit or pin may be easily removed by passing an article through the alined slots 32 whereas the head of the bit or pin may be struck for driving. the same from engagement with the sleeve, so as toallow an instrument to be passed therethrough for forcing the pin or bit from en agement therewith.

When this evice is in use the interior of the same will assume the position disclosed in Fig. 4. The plate 17 may be shifted to one side. by means of the operatin pin 19 and trigger 20. One of the beve ed portions 21 of the trigger may then be placed'in engagement with the head 9 b positioning the beveled portion in one o the .beveled notches 22. When this plate 17 is shifted the lockin pins 18 will also be moved. As theselocklng pins 18 are carried in pairs upon the shifting plate, one pin of the pair will bear directly upon the roller bearing 26 which enga es the same thereby compressing the coi ed spring of the particular roller bearing 26 and, thereby moving the roller bearing toward the lug, thereby allow ing the roller bearing to have more room. The other locking in of the pair, however, will move away om the roller hearing A stock 28 may which engages it thereby causing the roller bearing 26 to be moved away from theparticular lug 23 by means of the coiled spring engaging the same. This willcause the roller bearing 26 to engagethe bod 1 within the interior of the pocket 4. W

the roller bearings willbe movedinto binding engagement with the body 1 while three of the roller bearings will be moved from engagement therewith. As the device is shown in Fig. 4-the. sleeve 7 and locking cam 14-will' be rotated when the head is rotated inthe direction of the arrow, or in a clock: wise movement. T1118 18 caused since the roller bearings carried or positioned upon the right-hand side oftheir respective lu s 23 are in binding engagement with the ha y- 1 within the pocket .4 and also in a binding.

engagement with the shiftingpin 18 or the locking cam 14. As soon. as the handle has been moved as faras possible in one direction it may be moved so as to cause the head to rotate in the counter-clockwise manner which. will cause the roller bearings upon the right-hand side of the lugs 23 to be moved toward the lug compressing the springs 25. The roller bearings 26, how.-..

ever, upon the left-hand side of the lugs 23 will notinterfere in the movement of the hen the. plate is shifted it will be seen that three of head or cam into binding engagement with the same as the pins 18 upon the left-hand side of the lugs 23 will hold the roller bearings from engagement with the body 1.

When so desired, the trigger' 20 may: be pivoted upon the operating pin 19 at which time the pin. 19 may shift the circular shifting plate 17 so as to Cause-the pins 18 to move the roller bearings 26 upon the right.- hand side of the lugs 23 from engagement with the body 1 at which time the pins' upon the left-hand side of the lugs 23 will allow the roller bearings upon the left-hand side of the lugs 23 to engage the body 1, thereby allowing'the cam 14 and sleeve 7 to be rotated in an opposite direction to that indicated by the arrow in Fig. 4.

From the foregoing description it will be seen that a simple and eflicient intermittent grip device has been produced which may operate in either direction and which is provided with a simple means for shifting the operating mechanism which will cause the same to positively operate by a binding engagement with the mechanism.

It will also be seen that this binding mechanism will allow the device to operate by the least movement of the handle inasmuch as the roller bearings and shiftin mechanism are so formed as to always be In a binding engagement with the locking cam.

What is claimed as new is 1. A. device of the class described comprlsmg a body having an operating handle, said body provided w1th an enlarged pocket,

said body also provided with an opening communicating with said pocket, a sleeve passing through said opening in said pocket, said sleeveprovided with an enlarged head inclosing sald pocket, and fitting over said sleeve, a cam' positioned in said pocket, means for holding said sleeve and cam against independent rotation, said cam comprising a substantially triangular cam provided with an integral lu extending from each side thereof, each 0 said lugs provided with a pluralityof sprin receivmg pockets, coiledsprings carrie within said pockets and extending therebeyoiid, a plurality of roller bearings positioned within said pocket and engaging the free ends of said springs, said head provided with a circular groove, a shifting plate positioned within said grooi e, said plate provided with of said operating pin,

a plurality of shifting pins extending into pins adapted to engage a longitudinal slot, an operating pin enga ing said shifting plate and passing throng said slot, a trigger carried by the outer end said head provided with a plurality of notches adapted to be engaged by said trigger whereby said .pin may shifted for moving-said plate at which time saidtrigger may engage one of said notches for ho ding said plate in a set position, said pins engaging sald roller bearmgs whereby when said plate is shifted a pllgrality of roller hearings will be moved m b nding engagement with said body,

'-and the remaining roller bearings will be moved into binding engagement with said body and said cam whereby said cam will be rotated as said body is rotated in one direction, and said body adapted to be rotated in the opposite direction. without interference from said roller bearings.

2. A device of the class described .comprising a body having an operating handle, said bod provided with an enlarged pocket, said body also provided with an opening communicating with said body, a sleeve passing through said opening in said pocket, said sleeve provided withan enlarged head inclosing said pocket and fitting over said sleeve, a cam positioned in said pocket,

means for holding said sleeve and cam against. independent rotation, said cam comprising a substantially triangular body, said cam rovided with an integral lug extending rom each side. thereof, each of said lugs provided with a plurality of spring rebody, said 1 ceiving kets, coil springs carried within said 00 ets and extending therebeyond, a plum ity of roller bearings positioned within said pocket and engaging the free ends of said springs, said head provided with a circular groove, a shifting plate positioned within said groove, said plate provided with a plurality of shifting pins extending into sald pocket, said pins adapted to engage said roller bearin means for shiftin said plate, whereby w en said plate is shifting said pins will move so as to allow a plurality of said roller bearings to move in binding engagement with said body and said cam whereby said cam will be rotated as said body is rotated in one direction and said body being adapted to be rotated in the opposite direction without interference from said roller bearing.

3. A device of the class described comprising a body having an operating handle, said body providedwith an enlarged pocket, said body also provided with an opening eommunicatin with said pocket, a sleeve passing throug said opening in said pocket, said sleeve provided with an enlarged head inclosing said pocket and fitting over said sleeve, a cam positioned within said pocket, means for holding said sleeve and cam against independent rotation, said cam comprising a substantially triangular bod havlng bowed side portions, lugs forme integral upon said cam at spaced'distances from the corner portions thereof, roller bearlngs positioned within said pocket, coil springs engaging said lugs and roller bearings for normally urging said roller bearings away from said lugs, means carried within said pocket for engagin said roller bearings and moving a plura ity of the hearings in the desired direction at which time the remaining bearings will move into binding en gagement with the outer bowed surfaces of said cam and the inner surface of said body whereby when said body is moved in one direction, said cam and sleeve will also be moved in the same direction, said body being adapted to move in the opposite. directionwithout interference from said roller bearings.

In testimony whereof I hereunto afiix my signature in presence of two witnesses.

OSMOND E. LOOMIS.

Witnesses:

E. T.' MALOBY, CLARENCE R. Form.