US1397462A

US1397462A - Wrench

Info

Publication number: US1397462A
Application number: US383145A
Authority: US
Inventors: Jr Hunter Smith
Original assignee: JAMES T LAWLER
Current assignee: JAMES T LAWLER
Priority date: 1920-05-21
Filing date: 1920-05-21
Publication date: 1921-11-15
Anticipated expiration: 1938-11-15

Description

H. SMITH, 111. I I wasmcn. APPLICATION FILED MAY 2], I920- RENEWED SEPT-2 1, 192l- TTORNEYS.

UNlTED STATES PATENT QFHQE.

HUNTER SMITH, JR., OF SEATTLE, WASHINGTON, ASSIGNOR 0F ONE-HALF T0 JAMES 'l. LA'WLER, 0F SEATEE, WASHINGTON.

WRENCH.

Application filed May 21, 1920, Serial No. 383,145.

' T 0 alt whom 2'15 may concern:

.Be it known that I, HUNTER SMITH, J12, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented new and useful Improvements in renches, of which the following is a specification.

This invention relates to a wrench and has for its primary object the construction of a wrench in which the parts are so associated that an adjustment can be more readily accomplished and further, gripping action will be in proportion to the pressure necessary to turn the wrench, thereby preventing the wrench from slipping.

An object of the invention is the associa tion of parts so as to materially increase the gripping action of the wrench with the object acted upon.

A feature of the invention is the novel manner of arrangin the cam member and actuating same so t at great pressure can be brought to bear between the jaw and object acted upon. a

With these and other objects in view the invention will be better understood from the following detailed description taken in connection with the accompanying drawing wherein:

Figure l is a side elevation of a wrench constructed in accordance with my invention.

Fig. 2 is an edge elevation.

Again referring to the drawing illustrating one construction of my invention the numeral 1 designates a stationary jaw having a shank extension 2 which in turn is provided with spaced projections 3 and also with an opening t. The jaw is further provided with an arcuate series of gripping teeth 5. Pivotally connected to the jaw 1 is the plate 6 which is arranged in place when the wrench is used on soft material to prevent marring.

Slidably supported on the shank 2 is the movable jaw 7 that has a pin 8 passing through the opening 4: and engaged by spring 9 in the opening. From this construction it will be seen that under normal conditions the movable jaw is forced away from the stationary jaw.

The jaw 7 is provided with a groove 10 which is engaged by the cylindrical portion of the cam member 11. This cam member is arranged between the projections 3 and Specification of Letters Patent.

Patented Nov. 15, 1921.

Renewed September 24', 1921. Serial No. 503,119.

pivoted thereto as indicated at 12. Thus it will be seen that the co-action between the projections, walls of the groove 10 and the cam member will substantially hold the latter from being forced out of place- This cam member is provided with an arm 13 supporting a roller 14. This roller is constantly engaged by the cam 15 projecting from a handle 16 that is pivotally connected to the shank as indicated at 17.

From the foregoing description taken in connection with the accompanying drawing it will be apparent that I provide a wrench of few parts substantially associated and capable of making a quick connection and increasing its gripping effect with the object in proportion to the pressure necessary to turn the wrench. a

It is, of course, to be understood that the invention may be constructed in various other manners and the parts associated in diflerent relations and, therefore, I do not care to be limited in any manner except as set forth in the claims hereunto appended.

Having thus described my invention what I claim is:

1. A wrench comprising a stationary jaw, a plate pivoted thereto, a shank extending from the jaw, a movable jaw mounted on the shank, a spring arranged to force the movable jaw in one direction, a cam member pivoted to the shank, and a handle pivoted to the shank and constructed to force the said cam member to move the said movable jaw against action of said spring.

2. A wrench comprising a stationary jaw, a shank extending therefrom, a movable jaw mounted on the shank, a spring arranged between the jaws for moving the same apart, a pivoted cam for actuating the movable jaw against the action of said spring, a handle pivoted at one end to the shank and having a cam action with said cam.

3. A wrench comprising a stationary jaw, a shank extending therefrom, a movable jaw mounted on the shank, a spring arranged between the jaws for moving thesame apart, a pivoted cam for actuating the movable jaw against the action of said spring, a handle pivoted at one end to the shank, a roller carried by said cam and a cam on said handle for action against said roller.

in testimony whereof I affix my signature.

HUNTER SMITH, JR.