US1543210A - Wrench - Google Patents

Description

June 23, 1925.

J. W. KAOUGH WRENCH Filed Nov. 8, 1923 2 Sheets-Sheet 1 inventor JW/faaww June 23, 1925.

1,543,210 J. W. KAOUGH WRENCH A Filed Nov. 8, 1925 2 Sheets-Sheet 2 (1H0: new

Patented June 23, 1925.

UNITED STATES PATENT OFFICE.

I JOSEPH W. KAOUGH, OF DALLAS, TEXAS, ASSIGNOR TO THE GUIBERSON CORPORA TION, OF DALLAS, TEXAS, A CORPORATION DIE-DELAWARE.

' WRENCH.

Application filed November s, 1923. Serial No. 673,609.

To all whom it may concern:

Be it known that I, JOSEPH W. KAOUGH, citizen of the United States of America, residing at Dallas, in the county of Dallas and 'State of Texas, have invented certain new and useful Improvements in Wrenches,

of which the following is a specification.

This invention relates to new-and useful improvements in wrenches.

The invention has particularly to do with that type of Wrench which is designed for use on pipes, well casing and tool joints, or other cylindrical objects which are used in a perpendicular position.

, A particular object of the invention is to provide a pair of clamping jaws each having' closing fingers, whereby the jaws are closed in unison and a wide range of pipe sizes may be handled in an expeditious manner.

Another object is to provide means for intermeshing the free ends of the clamping jaws, whereby they are prevented from sagging, together with a self-latching device plication filed of even date herewith.

A construction designed to carry out the invention will be hereinafter described together with other features of the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings, in which an exampleof the invention is shown, and wherein:

Fig. 1 is a 'plan view of a wrench constructed in accordance with my invention,

Fig. 2 is a side elevation of the same,

Fig. 3 isan enlarged View of the head and jaws,

Fig. 4 is' a detail of a modified form of jaw mounting,

Fig. 5 is a sectional view on the line 5-5 of Fig. 4,

Fig. 6 is another modification of the jaw mounting, and

Fig. 7 is an end view of the same. In the drawings the numeral 10 designates a head having cheek plates 11 connected at one side by a web 12 and at the other side by a web 13, thus providing a I space between the plates extending longitudinally through the head. The head has a concaved seat 14 at its forward portion.

A lug 15 is formed on the extreme left hand has dies 20 and a comparatively deep concavity 17 in'its gripping face located between said dies. This permits thejaw to engage and grip pipes of-various diameters, the term pipe being used generically for any cylindrical article.

A pair of'clamping jaws 21 and 22, respectively, are mounted on the head. The jaw 21- has ears 23 counter-sunk in the ears 16 and mounted on the bolt 19, so as to be substantially flush -with the cheek plates.

The jaw 22 has ears 24 engaging on the bolt 19 passing through the lug 15. The free end of the jaw 22 has a converging socket 25 which receives the reduced and beveled end 26 of the jaw 21 atthe center of the wrench, whereby sagging Qfthe jaws is prevented. The jaw 21 has a hook latch 26' on its reduced end which engages in a keeper 27. The 'keeper is pivoted on the free end of the jaw 22. A yoke spring 28 has one end straddling the latching-end of the keeper and its inner end embracing the jaw 22, while the sides of the spring are coiled about the pivot of the keeper. The ends of thehook. and keeper are sufliciently rounded to cause an easy self-latching action when the clamping jaws are swung together.

The jaws 21 and 22 have dies 21' and 22 respectively, and each has'a concavity 21 extending to its free end. These concavities register when the jaws are closed and form a continuous arc. In each concavity is a die 22. This structure permits the jaws to firmly grip various diameters of p p Animportant feature of the invention resides in jaw closing fingers 29 formed on the pivoted ends of the clamping jaws and arranged in pairs so as to straddle the check plates when said jaws are closed. When the jaws are opened the fingers are swung into the path of the pipe.

The gripping jaw 17 has an inner curved face 39 in position to be engaged by a dis placing member 40 on the inner end of a handle 42 mounted on a pin 41 secured in the head. The member 40 is sufficiently broad to displace the jaw 17 from the seat 14 and into gripping position when the handle is swung. While I haveshown the handle and the member 40, it is to be understood that any means may beused for displacing the jaw 17.

It is desirable to hold the handle 42' against swinging and the head in central position and while any suitable means may be used for this purpose, I have found a spring latch bolt to give satisfactory results. On the handle is mounted a housing 44 in which a pair of headed bolts 45 are mounted to slide.

The cheek plate on this side has a stud 46 on its inner end relatively between the bolts. Each'bolt has a coiled compression spring 47 confined thereon and bearing against the housing and tending to withdraw the bolts from the path of the stud. An abutment plate 48 is fastened on the handle 42. Each bolt 45 has a hand hook 49 and by grasping either of these, the bolt thereof may be dlsplaced against the tension of its spring 47 and caught against the edge of the plate 48, whereby the head of the bolt will be held in the path of the stud. By displacing both bolts the head 10 and the handle will be engaged for unitary movement. When only one of the bolts is displaced the handle is free to swing independently in one direction only. As is shown in Fig. 1, the right hand bolt 45 is displaced and when the handle is swung to the left the head will also be swung therewith, but when the handle is swung to the right the head 10 will remain (relatively) stationary and the member 41 will fulcrum on its pin 41, forcing the jaw 17 into action.

In Figs. 4 and 5 I have shown a modified form in which the jaw 17 is shown with a lug 50 extending outwardly of ears 16' formed on the head. The jaw 17 has a slot 17 in which a bushing 51 is confined on a pin 19 which latter projects beyond the ends of the bushing and has its ends confined in the ears 16' as is shown in Fig. 5. One end of the pin is fastened by a set screw 52. The ends of the pin being flush with the outer faces of the plates 11, allow the fingers 29 of the clamping jaw 21 to swing thereover. The jaw 21 is pivoted on the end of the lug 50 by a bolt 53. This 211" rangement permits the jaws to undergo a rotary movement circumferentially of the pipe in gripping the same and also increases the amplitude of the swing of the gripping aw. 1 In Figs. 6 and 7 another modification is shown in which the head has a lug 60 extending from its right hand end and which receives the forked end of the jaw 21. The gripping jaw 17 is pivoted on a pin 61 hav ing its ends confined in the cheek plates 11. This pin is held by a set screw 62 in one of the plates. The fingers 29 of the jaw 21 swing over the plates and the ends of the pin 61, and said jaw 21 is pivoted on a bolt 63 mounted in the lug 60. This form has the advantage of two bearing points for the fulcrums of the jaws and also offers more metal for the parts at these points.

In using the wrench the clamping jaws 21 and 22 are swung open as is shown in the dotted lines in Fig. 3. The head 10 is moved toward the pipe which is engaged by the fingers 29 which latter were swung into its path when the jaws were opened. As the movement of the head toward the pipe is continued the fingers are displaced, whereby the jaws 21 and 22 are swung in behind the pipe until the hook 26 engages in the keeper 27 and the clamping jaws are thus fastened as is shown in full lines in Fig. 3 and in full lines in Fig. 1.

The bolts 45 are both engaged with the lug 46 during the jaw-closing movement,

but in order to swing the member 40 and displace the jaw 17 to grip the pipe, one of the bolts 45 must be retracted, according to the direction in which it is necessary to swing the handle 42. When the handle is released it may be swung and the pipe firmly gripped.

It is obvious that other latching means could be used and various other changes, modifications and alterations may be made within the scope of the appended claims.

What I claim, is:

7 1. In a wrench, the combination of a head having a seat, an arcuate gripping jaw swinglng through the-seat, means including a handle for displacing the gripping jaw into gripping position, a pair of self latching clamping jaws pivoted on the head, and

aw closing fingers carried by the clamping aws.

2. In a wrench, the combination of a head having a seat, an arcuate gripping jaw swinging throu h the seat, means including a handle for isplacing the gripping jaw into gripping position, a pair of clamping jaws pivoted on the ends of the head, means for latching the free ends of the clamping jaws, and jaw closing fingers carried by the clan'iping jaws.

3. In a wrench, the combination of a head having a seat, an arcuate gripping jaw swinging through the seat, means including a handle for displacing the gripping jaw into gripping position, a pair of clamping jaws pivoted on the ends of the head, a hook latch on the free end of one of the clamping jaws, a self-latching keeper on the free end. of the other ciainping jaw engaged by the hook when the jaws are closed, and jaw closing fingers carried by the clamping jaws,

In a wrench, the combination of a head having seat, an arcnate gripping jaw swinging through the seat, means including a handle for displacing the gripping jaw into gripping position, a pair of clamping jaws pivoted on the ends of the head, a hook latch on the free end of one of the clamping jaws, a self-latching keeper on the free end of the other clamping jaw engaged by the hook when the jaws are closed, jaw closing fingers carried by the damping jaws, and a socket on the free end of one the clamp ing jaws receiving the end of the other clamping aw,

5. In a wi ench, the combination of a head having a seat, an arcuate gripping jaw pivoted in the head and having a concavity in its face and dies at each end of the concavity, means in-the head for actuating the gripping jaw, a pair 0t clamping jaws piv oted on the ends of the head and having pipe receiving concavities in their faces, means for fastening the free ends of the clamping jaws together, and jaw ciosing fingets carried by the pivoted ends of the clamping jaws.

6, In a wrench, the combination of a head having a seat, an arcuate gripping jaw pivoted in the head and having a concavity in its face and dies at each end of the ooncavity, means in the head for actuating the gripping jaw, a pair of clamping jaws pivoted on the ends of the head and having pipe receiving concavities, in their faces, dies in the eoncavities ot the clamping jaws,

means for fastening the treeends of the.

damping jaws together, and jaw closing fingets carried by the pivoted ends of the clamping jaws.

in testimony wheneot ii aiiix my signature.

JQSEPH "W. KAUUGH.

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