US1244273A - Wrench. - Google Patents

Description

J. G. WRIGHT.

WRENCH.

APPLICATION FILED MAR.I3,1917. Lmfiwa Patented 001;. 23,1917.

2 SHEETSSHEET I.

J. G. WRIGHT.

WRENCH.

APPLICATION FILED MAR-13.1917.

L2%,fi?8o Patented 001;. 23,1917.

2 SHEETS-SHEET 2 sans FAST JOHN G. WEIGHT, 015 TYLER, TEXAS, ASSIGNOR OF ONE-THIRD T0 JAMES KENNEDY,

' OF TYLER, TEXAS.

WRENCH.

Specification of Letters Patent.

Patented Get. 23, 191'? Application filed March 13, 1917. Serial No. 154,487.

.yention, such as will enable others skilled in the art to which it appertains to make and use the same.

1 My invention relates to new and useful improvements in that class of tools knqwn as wrenches and has for its primary ob ect to provide an effective device that can be operated for a large variety of uses.

Another object of the invention is the provision of a novel means for holding round headed fastening elements such as bolts so as to prevent turning of the same when adjustment is being made.

A further object is the provision of gripping jaws that are of such shape as to readily grip and hold the round heads of bolts and a means to lock the jaws to prevent the same from falling off of the bolt.

A still further object of the invention is to provide a-wrench that can be efi'ectively used as a vise for both round and square work.

A still further object of the invention is the provision of means whereby the wrench can be used to the best of advantage as a nut cracker.

With these and other objects in view the invention consists in the novel construction, arrangement and formation of parts as will be hereinafter specifically described, claimed, illustrated in the accompanying drawings in which:

Figure 1 is a side elevation of the improved wrench,

Fig. 2 represents a top plan view of the same,

Fig. 3 represents a detail perspective View of one of the jaws,

Fig. 4 represents a cross sectional view through the jaws,

Fig. 5 represents a detail cross sectional view taken on the line 55 of Fig. 1,

Fig. 6 represents the wrench as it would be used for a pipe wrench,

Fig. 7 represents a side elevation of the wrench posltioned on a table showing the same used for cracking nuts,

of the corresponding wire cutting member.

Referring to the drawings in detail wherein several reference numerals designate correspondlng parts throughout the several views, the numeral 1 indicates a relatively straight shank, which has one end flattened to form a handle 2 and the opposite end bent at an angle to provide a jaw 3. Intermediate the jaw 3 and handle 2 the shank is provided with an enlarged aperture 4 which receives the threaded end of an adjusting bolt 5.

A relatively short shank 6 is pivotally connected to the enlarged smooth portion 7 of the bolt 5 which passes through an enlarged aperture 8 formed in the shank 6 and is secured in position by means of a small bolt 9 extending through apertures formed in the shank 6 and'one of the series of apertures 10 in the bolt 9. The bolt 9 is held in position by means of a nut 11 and is readily removable and can be placed in anyone of the series of apertures 10 to suit varying conditions. A nut 12 is fitted on the threaded shank 5 of the bolt between the shanks l and 6 and is adapted to move the shanks in relation to each other. The nut 12 has concaved outer surfaces 13 and one of the same is adapted to seat in a depression 13 formed in the shank 1. An adjusting nut 14 is fitted on the bolt 5 and rests against the outer surface of the shank l and holds the same against relative movement.

The shank 6 has one end reduced and bent at right angles as at 15 and is loosely positioned in a relatively large recess 16 and threadedly receives a nut 17 positioned between the shanks 1 and 6 and is adapted to swing the shank on the pivot pin 9 to'move the outer ends of the shanks in relation to each other. a

The opposite end of the shank is bent at an angle to provide a jaw 19 which is identical with the jaw 3 in construction. Each jaw is provided at its extreme outer end and at its upper surface with recesses 20 extending inwardly from the working faces of the jaws. The recesses 20 have curved upper walls to conform to the contour of a rounded bolt head and are serrated as at 21 to bite into the bolt heads.

Extending from the recesses 20 formed in the upper portions of the jaws to th e lower jaws is a V-shaped groove 22. A similar V-shaped groove 23 extends from the recess 20 formed in the extreme outer portion of the jaws to the upper portion of the jaws and bisects the groove 22. At the point where the grooves 22, and 23 cross each other an aperture 24 is formed through the jaws. The purpose of the V-shaped grooves 23 and 22 and the apertures 24 will be hereinafter more fully pointed out.

Extending through an aperture 25 in the shank 1 is a bolt 26 having a threaded end extending through a relatively large recess 27 formed in theshank 6. The bolt 26 is positioned adjacent the jaws and recelves a winged or tailed nut 28 for ad usting the same. An expansion coil spring 29 is wound around the bolt 26 and bears against the inner surfaces of the shanks 1 and 6 to normally hold the same away from each other.

Between the jaws 3 and 19 and the bolt 5 the inner surfaces of the shanks 1 and 6 are reduced and serrated as at 30 to form a pair of pipe gripping jaws used when the bolt 26 is removed as clearly illustrated in Fig. 6 of the drawings.

When it is desired to use the improved tool as a nut cracker the bolt 25 is removed and a threaded bolt 31 is substituted, which pivotally receives a lever 32 having a cam surface 33. The cam 33 iseccentrically secured to the bolt 27 by means of a pivot pin 34. Thebolt 27 is held in position by means of a nut 5 fitted on the end of the same.

A cup shaped member 36 is provided for holding the nut when the tool is used for a nut cracker. The cup shaped member 36 has a threaded shank 37 positioned in one of ,the recesses 24 and is held in position by means of'a nut 38 threaded on the end of the shank. On each side of the cup shaped member 36 is a V-shaped extension 39 fitted in one of the grooves 22 which prevents the cup shaped member from turning.

The handle is provided with a pair of apertures 40, which receive bolts 41 ex tended through an annular flange 42 formed upon a bracket 43, which is adapted to be clamped to a table by means of a set screw 44. Thus it will be seen that the tool can be clamped to a table and a dish positionedunder the jaws of the tool to receive the cracked nuts. It can be readily seen by moving the lever 32 so as to bring the cam 33 in engagement with the shank of the tool the jaws will be forced toward each other and the nut positioned between the same will be broken.

When it is desired to use the wrench as a wire cutter the shanks 45 and 46 of the members 47 and 48 are inserted in the recesses 24 and are held in position by means of suitable nuts- (not shown). The. V-shaped extensions 49 and 50 formed on the lower ea re When the tool is to be used as a vise, the

work to be held is inserted between the bolts 5 and 26 and the nuts 28 and 14 can be adjusted, so as to readily hold the work between the working faces of the tool.

In practice I have found that the form of myrinvention, illustrated in the accompanying drawings and referred to in the above description, as the preferred embodiment, is the most eficient and practical;- yet realizing the conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasize thatvarious 'minor changes in details of construction,

proportion and arrangement of parts may be resorted to, when required without sacrlficing any of the advantages of my invention as set forth.

What I claim is:

1. In a tool of the class described, a relatively fixed shank having an aperture extending transversely therethrough, a bolt adjustably secured to said shank, a relatively movable shank pivotally secured to said bolt, said shanks being provided with jaw faces, said relatively movable shank having an angled threaded end extending through said aperture, and a nut fitted on said angled end for swinging the movable shank on said bolt.

2. In a tool of the class described, a relaadjustably secured to said shank, a relatively movable shank pivotally secured to said bolt, said shanks being provided with jaw faces, said relatively movable jaw having an angled threaded end extending through said aperture, a nut fitted on said angled end for swinging the movable shank on said bolt, spring meansnormally holding the jaws away from each other, and an adjustable means for normally moving said jaws against the tension of said springs. 3. In a tool of the class described, a relatively fixed shank having an aperture extending transversely therethrough, a bolt adjustably secured to said shank, a relatively movable shank pivotally secured to said bolt, said shanks being provided with jaw faces, said relatively movable shank having an angled threaded end extending through said apertures, a nut fitted on said angled ends for swinging the movable shank on said bolt, spring means for normally holding the jaw faces away from each other, a second bolt extending through said shanks intermediate the jaws and the first mentioned bolt and through said spring means, and a lever pivotally secured to said second named bolt, said lever having a cam surface to move the jaws toward each other against the tension of the spring means.

4. In a device of the class described, a shank provided at its rear end with a hendle, a second shank pivoted intermediate its ends to the first named shank, jaws formed on the outer terminals of the shanks, the jaws having inwardly extending recesses opening out through their adjacent sides to provide each jaw with opposing working faces, said recesses having inclined lower walls and curved upper walls to conform to the contour of round bolt heads, said curved walls being serrated, said jaws being provided with a second set of recesses arranged at angles to the first mentioned recesses, so that bolt heads at difl'erent angles may be readily grasped, and means for adjusting the second named shank in relation to the firstnamed shank, said jaws being further provided with a V-shaped groove extending from each bolt holding recess to the opposite wall, said grooves bisecting each other, and the jaws having a transverse aperture extending through the same at the point of crossing of the grooves, as and for the purpose specified.

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

JOHN G. WRIGHT.

Witnesses: Y t, C. J. BROGAN, J. M. STEPHENS.

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