US1456620A

US1456620A - Wrench

Info

Publication number: US1456620A
Application number: US332543A
Authority: US
Inventors: George W Cary
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-10-22
Filing date: 1919-10-22
Publication date: 1923-05-29
Anticipated expiration: 1940-05-29

Description

May 29, 3923.

G. W. CARY WRENCH Filed Oct. 22 1919 INVBN T n R GEIJRGEW CARY- ATTURNEY Patented May as, 12a

siren ears were GEORGE W. CARY, 01F GREENFIELD, IVTASSACHUSETTS.

WRENCH.

Application filed October 22, 1919. Serial No. 332,543.

To all whom it may concern:

Be it known that GEORGE W. CARY, citizen of the United States of America, residing at Greenfield, in the county of Franklin and State of Massachusetts, has invented certain new and useful Improvements in Wrenches, of which the following is a specification.

This invention relates to improvements in wrenches and its leading object is to provide a wrench which can be used for manipulating parts and bolts and nuts and which will readily adjust itself to various size pipes, bolts, and nuts, and exert a positive gripping action on the work.

Anotherobject of the invention is the provision of a wrench having a pivoted jaw which may be quickly released by finger pressure upon an operating lever.

With the above and other objects in view the invention relates to certain new and use- .i'ul constructions, combinations and arrangements of parts, clearly described in the following specification and fully illustrated in the coming drawings, in which;

Fig. l is a side elevation of the improved wrench showing the jaw in its normal position.

Fig. 2 is a similar view showing a ortion of the side of the body of the wrench roken away to expose the connection between the lever and the swinging jaw, the swinging jaw being shown in its open position.

Fig. 3 is a front elevation of the upper portion of the wrench showing the movable jaw in its normal position.

Referring to the accompanying drawings 5 designates the handle which is provided or formed with a longitudinal slot 6, lea-ving walls 7 and 8 preferably integral with the handle 5. A rigid jaw 9 is disposed against the upper ends of the side walls-7 and 8 and is formed with a portion 9 which fits between the terminal portions of the walls 7 and 8 and is secured thereto by means of rivets or the like 10. The rigid jaw 9 is formed with sharp work biting teeth 11 which are arranged in an are on the upper surface of the jaw.

A movable jaw 12 is formed with an arm 13 which is pivotally secured by the pivot 14: between the side walls 7 and 8. The arm 13 is formed with gear teeth 13 which mesh with the gear teeth 15 of the releasing lever 16 which is pivotally mounted between the walls 7 and 8 upon the pin or rivet 17 The lever 16 is formed with an arm 16 which is equipped with a small projection 18 surrounded by the outer end of the coil spring 19 which has its inner ends fitted in the socket 20 formed in the handle 5, so as to exert tension against the lever 16 to nor mally hold the arm 16 in its outward position and to hold the jaw 12 in its normal closed position as shown inv Fig. l.

The movable jaw 12 is formed with an upper row of inclined work biting teeth 12 and a lower row of similar teeth 12 which are angularly related to each other. The

teeth

12 and 12 are inclined in an opposite direction to the teeth 11 oi": the rigid jaw 9. The handle 5 may be of any length and the proportion shown is merely illustrated of one type of a wrench embodying the invention.

The teeth of the rigid jaw 9 are adapted to prevent the work turning in one direction by biting into the work and the teeth of the movable jaw are adapted into the opposite side of the work so that the movable jaw will be drawn more closely against the rigid jaw and the work positively clamped between the two jaws. When the wrench is turned in the opposite direction the jaws will easily slide over the work, thus permit-ting of quick operation. By a thumb or finger pressure upon the lever 16 the movable jaw will be disengaged from the work and the wrench will be quickly withdrawn.

Having described my invention I claim- A wrench comprising a handle having a jaw-holding head on one end, said head being laterally enlarged and longitudinally slotted, a rigid jaw supported by the sides formed by the slot in said head and having a series of teeth disposed in the convex curve, certain of said teeth being located along the innermost side of the jaw in substantial axial alignment with the handle, a movable jaw having an arm pivotally supported in the slot and provided with two rows of gripping teeth, one row being disposed at an oblique angle of the other row and the two rows having a common meeting point so that the teeth of said movable,

jaw will converge away from the teeth of the rigid jaw toward said meeting point said arm hgwgingsegmental g9l13l3ebh therein, a lever 'proirided in thexslb't all said jaw 5 holding head and having segmental teethv toward the first named handle, and a spring bearing atone end against the handle and at the other end agair et eaid leyer tp I nain- 10 tain (the/movable 'Ifjaw t wa-rd the rigid jaw.

Signed Greenfield, Mass.

GEORGE W. cam.