US978688A - Wrench. - Google Patents

Description

E. L. BROWN.

WRENCH.

V APPLIUATION FILED JAI-29,1910. 978,688.

Patented Dec. 13,1910.

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@u l mi' x F E. L. BROWN.

WRENCH.

APPLIUATION FILED JAN.29,1910.

Patented Deo. 13, w10.`

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EDWARD L. BROWN, OF WABUSKA, NEVADA.

WRENCH.

Specification of Letters Patent.

Patented nee. 13, 1910.

Application filed January 29, 1910. Serial No. 540,876.

To all whom it may concern.'

Be it known that I, EDWARD L. BROWN, a citizen of the United States, and a resident of Wabuska, in the county of Lyon and State of Nevada, have invented certain new and useful Improvements in Wrenches, of -which the following is a specification.

This invention 1s an improvement in wrenches, and the invention consists in certain novel constructions and combinations of parts as will be hereinafter described and claimed.

In the drawings Figure 1 is a side view partly in section of a wrench embodying my invention and showing the jaws open. Fig. 2 is a side elevation of the wrench showing the sliding jaw in its forward position. Fig. 3 is an edge view of the back of the wrench. Fig. 4 is a detail sectional view of the inner or socketed end of the handle. Fig. 5 is an end view of the handle. Fig. 6 is a face view of a sliding jaw. Fig. 7 1s a front edge view of the fixed jaw and its shank. Fig. 8 shows some of the principles of my invention embodied in a monkey wrench. Fig. 9 is a detail sectional view onl about line 9-9 of Fig. 2.

In the construction shown in Figs. 1 to 7 the wrench comprises a handle A which may be preferably of metal channeled out in lits sides as illustrated in Figs. 1, 2 and 3 or the handle may be of the `knife handle form show-n in Fig: S-'inwhich the wooden side pieces a are applied to the metallic handle.

At its inner endthe handle is socketed at A" and A2. The socket A receives the inner 4end ofthe shank B Vof the xed jaw B while the socket A2 receives one end of the screw C, the other end of said screw C being threaded in theslidin jaw Dso the said screw C when held to t e handle' A, as presently described, may be turned by its knurled head C to adjust the sliding jaw D back and forth'along the shank B. The screw C has an extension C2 which projects into t e socket A2 and has a'rounded head C2 which bears against the rounded base wall A3 of the socket A2. Screws E extend# in over the shoulder above the head C3 retain the screw C in connection with the handle A, the mouth of the socket A2 being of suiiicient size relativelyto the extension C2 to permit the rocking movement of the handle Aas shown in Fig. 2,1 in the operation of the wrench.

In practice I prefer to have the bottom wall of the socket A2 from about g2g to Jg of an inch belowthe center of the pin F when the wrench is in its open or straight position so that the wrench'will 'have a throw of about i to g of an inch on the movable jaw in operating the wrench to its full stroke. I also prefer to have the socket A2 about 'of an inch deep but manifestly these proportions may be varied in the practical production of the wrench in different sizes of wrenches and to suit the manufacturer.

Manifestly the handle A may be made of any suitable length and be made in any suitable design without departing from the principles of my invention.

The jaw shank B lits at'its inner end in the socket A and is pivoted to the wrench handle by a cross pin F, the side walls of the socket A having bosses a reinforcing the o enings for the pin F which pin F may lbe o any suitable form and may preferably be riveted at its ends at F as shown in Fig. 3.

As will be understood from Figs. 1 and 2, the handle A 'is rockable relative to the shank B swinging on the pin F, a space being left at A11 below the shank B to permit the rocking movement of the parts and a spring actuated pin G is slidable longitudinally in the shank B in advance of the pivot F and is pressed by a coil spring G- out wardly to the position shown in Fig. 1 and operates to re-adjust the parts from the osition shown in Fig. 2 to that shown in ig. 1 when pressure on the handle -A is released after operative movement of the wrench. The pin Gr and its spring G operate in a socket Gr formed in the inner end of the shank B as shown in Fig. 1 of the drawings.

The sliding jaw D has straps D upon the shank B of the fixed jaw B and when the parts are formed to operate as a pipe wrench it is preferable to serrate the opposing faces of the jaws B and D as shown in Figs. 1, 2 and 6 of the drawings. To -increase the gripping hold upon a pipe it may be preferable in some instances to provide teeth or serrations at B2 upon the inner face of the shank B adjacent to the jaw B as shown in Figs. 1, 2 and 7 of the drawin but where desired these serrations B2 may e omitted.

In order to permit -the sliding of the jaw D without interferin with the serrations 2, I form the inner side of the jaw D adjacent to its 'serrated face with a longitudinal roo recess o1' groove at D2 which receives the serrations B2 when the sliding jaw is moved toward the iixed jaw as shown in Fig. 2 o-f the drawings.

It will be noticed that the tapered forms of jaws are useful in that they will hold the end of the wrench on the pipe after the jaws are adjusted and there is no danger ofthe jaws slipping off while in use. It will also be understood that the form vof adjusting screw C as shown and before described may be varied without departing from some of the principles of my invention.

As shown in Figs. 1 and 2 one of the straps D is lowered considerably below the serrated face of the jaw D, the purpose `of this construction being to permit the tempering of the serrations without overheating the strap D. Instead of the handle standing straight when at rest as shown at Fig. 1, the parts may be adjusted so that. the handle A will incline ofi' to the right when atv rest so that when pushed forward to position to cause the jaw D to clamp a pipe against the jaw B, the handle will stand in the straight position'shown in Fig. l instead of in the p inclined position shown in Fig. 2.

In the operation of the described construction, it will be not-iced that when the parts are assembled as shown and before described, the sliding jaw D may be adjusted to fit upon a pipe by properly turning the screw C. Then the screw C maybe slacked slightly to allow enough play between the jaws so the wrenchA will work freely around the pipe and if a pipe should happen to be very thin, the throw of the -sliding jaw can be regulated by the screw so that the serrations will not press into the pipe far enough to flatten or crush it. Then the wrench may be operated by rocking the handle A from the posit-ion shown in Fig. l to that shown in Fig. 2

- which will cause the jaws B and D to grip understood by those skilled 1n the art.

the pipe, when further movement of the wrench handle in the same direction, bei-ng that indicated by the arrow in Fig. 2, will operate to forcibly turn the ipe as will pe n this operation, it will be noticed I provide in connection with the fixed jaw having a shank, a jaw which slides along the said shank, a handle which is rockably connected with the fixed jaw shank and has a crank like projection at A4 beyond its pivotal connection with the shank and a connection between the said crank like projection A4 and l the sliding jaw so the rocking of the handle on the shank will operate to slide the movable jaw along the shank of the fixed jaw, the connection between the crank projection of the handle and the sliding jaw being preferably effected by means of the adjusting screw as shown and before described.

Manifestly my invention may be embodied in its broad principles in a monkey wrench and I show such embodiment in Fig. 8 in which the fixed jaw l has the shank 2 pivoted at 3 to the handle a which latter has the crank projection 5 connected by the screw 6 with the sliding jaw 7, the parts 2, 8, 4, 5 70 and G operating as in the other figures of the drawings but the faces of the jaws l and 7 being smooth so they may operate upon square or other angular nut. In the operation of this construction, it will be noticed the jaws will be clamped by the rocking handle upon a nut thus avoiding in a meas-4 ure the marring of the corners or other portions of the nut. Also the monkey wrench construction shown in Fig. 8 may be used 80 upon the hexagonal nut and slip back from face to face by permitting a suiiiciently loose fit of the jaws upon the nut to enable the adjustment of the jaws past the corners of the nut in the movement incident to the roc-king connection of the handle as shown and before described.

I claim: The improved wrench herein described comprising a handle provided at its innerend with a crank projection to one side and having in said end a socket in alinement with the handle and also a socket alongside the said first socket and in the crank projection of the said handle, a fixed jaw pro-v vided with a shank fitting at one end in said first socket, a cross pivot connecting said shank with the handle whereby the handle and shank are rockably connected, a spring actuated readjusting pin operating longi- 10U tudinally in the inner end of the shankand pressing against the b-ase wall of the socket for said shank, a movable jaw sliding upon the shank of the fixed jaw, an adjusting screw threaded at one endin the movable jaw and having at its other end a rounded head bearing in the socket in the crank projection of the handle and means retaining said head in the said socket, all substantially as and for the purposes set forth.

EDWARD L. BROWN. Wvitnesses A. J. VVEBs'mR, P. J. S'rAoEY.

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