US592285A

US592285A - Wrench

Info

Publication number: US592285A
Authority: US
Publication date: 1897-10-26
Anticipated expiration: 1914-10-26

Description

(No Model.)

J. P.` FORSBERG.

' WRENCH. No. 592,285. Patented Olot. 26,1897.

5mm/woz L; ama/neng.

Nirnn STATES JOHN P. FORSBERG, OF TI-IIEF RIVER FALLS, MINNESOTA.

WRENCH.

SPECIFICATION-forming part of Letters Patent No. 592,285, dated October 26, 1897. Application filed April 20, 1897. Serial No. 632,908. (No model.)

To a/ZZ whom t may concern:

Be it known that I, JOHN P. FoRsBERG, a citizen of the United States, residing at Thief River Falls, in the State of Minnesota, have invented certain new and useful Improvements in Vrenches; and I do vhereby-declare the followingr to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of my invention is to provide a simple and effective nut wrench which is adapted to be used upon nuts of any size or shape and in any out-of-the-way position.

The invention consists of a bar constituting a stationary jaw and part of the handle, having a slot extending therethrough at a point adjacent to its forward end and parallel laterally-eXtending lugs at its eXtreme rear end, a movable jaw having teeth upon one edge thereof-aud formed with a laterally-extending arm which iits within said slot and is pivoted to the stationary jaw, a bar constituting the operating-lever for the lmovable jaw and a part of the handle of the wrench formed with vbifurcated forward ends, within which the movable jaw ts and is pivoted, and a nut having a central threaded opening therethrough, within which the threaded rear end of said operating-lever fits, said nut fitting between the lugs at the rear end of the stationary jaw.

In the drawings forming part of this speciication, Figure l represents a perspective View of my improved wrench, parts being shown in dotted lines to more clearly bring out the construction. Fig. 2 is a detail view of the bar constituting the stationary jaw and a part of the handle. Fig. 3 is a similarview of the movable jaw, and Fig. 4 is a similar View of the operating-lever for the movable aw. J Like reference-numerals indicate likeparts in the different views.

My improved Wrench is made up of a bar 1, constituting a stationary jaw and a part of the handle, said bar being provided with a laterally-extendin g slot or openin g 2 at a point near its forward end and with two parallel laterally-extendin g lugs 3 3 at its extreme rear end. The movable jaw 4 is provided with teeth 5 upon its inner engaging surface and has a laterally-projecting arm or extension 5 thereon which is slightly narrowerthan the main part of said jaw. Said extension 5a ts within the slot or opening 2 and is pivoted to the bar l', as shown at 6. The bar 7 constitutes the operating-rodffor the movable jaw 4 and a part of the handle of the wrench. It is formed with bifurcated forward ends 8, between which the narrow portion of the movable jaw 4 fits and is pivoted. rPhe rear end of said rod is screw-threaded and is adapted to extend through openings 9 9 in the lugs 3 3. Fitting between said lugs is a nutlO, havinga milled outer surface and a central screwthreaded opening, within which the rear end of the bar 7 iits.

In using my wrench it is merely necessary, in order to separate the movable jaw from the stationary jaw, to turn the nut 10 in one direction or the other, according to the way in which thev screw-threads are formed, which 'action will retract the bar 7, drawing with it the movable jaw 4. A reverse operation from that just described will close the jaws of the wrench and cause the same to grip upon the nut or other object to be turned thereby.

By reason of the fact that the operating-rod 7 of the movable jaw extends to the extreme rear end of the bar l the same is adapted to serve as a part of the handle of the wrench. The two parts 1 and 6, when grasped, therefore, to operate the wrench to turn a nut7 will be held positively and certainly against slipping or any movement whatever relative one to the other.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is-

A wrench comprising a bar constituting a stationary jaw and a part of the handle, provided with a laterally-extending slot or opening therein and having a pair of laterally-extending parallel lugs at its extreme rear end which are formed with alined openings, a movable jaw having a contracted laterally-projecting arm or extension thereon which iits within said slot and is Vpivoted to the bar in which said slot is formed, an operating rod or bar for said movable jaw having bifurcated IOO forward ends between which the contracted portion of said movable jaw iits and to which said movable jaw is pivoted, and having a screw threaded rear end which projects through the :dined openings in said ings, and In testimony whereof:` I have signed this :L nut fitting between said lugs formed with :L specification in the presence of two subscribcentral threaded aperture within which the ing witnesses.

rear end of said operating-bar fits, the said JOHN P. FORSBERG. operating rod or bar serving :ts zr part of the Vitnesses:

handle of said wrench, substantially as and J. V. SWANSTROM,

for the purpose described. L. J. BARNES.