US802187A - Pipe-wrench. - Google Patents

Description

PATENTED OUT. 17, 1905. G. M. GBALY.

PIPE WRENCH.

APPLICATION FILED MAY 17, 1905 Jill/shin: 6% 6601,.

UNITED sTATEs PATENT OFFICE.

Specification of Letters Patent.

Patented Oct. 17, 1905.

Application filed May 17, 1905. Serial No. 260,813.

To a l l 7/;710711, it may concern.-

Be it known that I, GEORGE M. GEALY, a citizen of the United States of America, residing at Enon Valley, in the county of Lawrence and State of Pennsylvania, have invented certain new and useful Improvements in Pipe-Wrenches, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in wrenches, and relates more particularly to a wrench adapted for gripping pipes and curved surfaces.

The invention has for its object to provide a novel form of wrench which can be easily and quickly placed in engagement with different sizes of pipes and quickly operated to rotate or move the pipe in engagement with which it is placed.

Another object of this invention is to provide a pipe-wrench which will be extremely simple in construction, strong and durable, comparatively inexpensive to manufacture, and highly efiicient when used in connection with pipes or curved surfaces.

Briefly described, my improved wrench consists of a pair of alligator-jaws which are loosely mounted upon a cam-lever which serves functionally as a handle. The body portion of the alligator-jaws is provided with outwardly-extending pins or studs, and the cam lever is provided with a pivotallymounted yoke carrying a suitable chain, which is adapted to be placed over a pipe and placed in engagement with the pins or studs of the alligator-jaws when a pipe is engaged between said jaws. The cam-lever or handle of the wrench is adapted to be manipulated to force the jaws and the chain in engagement-with the pipe, whereby when the wrench is moved the pipe will be rotated in the direction to which said wrench is moved.

The above construction will be hereinafter more fully described and then specifically pointed out in the claims, and, referring to the drawings accompanying this application, like numerals of reference designate corresponding parts throughout the several views, in which Figure l is a side elevation of my improved wrench, partly broken away. Fig. 2 is a view of one edge of my improved wrench. Fig. 3 is a view of the opposite edge of my improved wrench, the handle thereof being broken away. Fig. 4 is a vertical sectional view taken on the line w of Fig. 3. Fig.

is a top plan view of the alligator-jaws of my improved wrench. Fig. 6 is a side elevation of a modified form of construction which may be used in connection with the wrench. Fig.

,7 is a perspective view of the alligator-jaw of the wrench; and Fig. 8 is a side elevation view of my improved wrench, partly broken away, illustrating the wrench as locked in engagement with a section of pipe.

To put my invention into practice, I preferably construct my improved wrench of steel or like durable metal, and the jaws of the wrench conform in contour to what is known in the art as alligator-jaws.

The jaws 1 and 2 of the wrench are provided with substantially V-shaped notches or recesses 3 3, having serrated or toothed confronting faces 4 4. The jaws 1 and 2 are connected together by a body portion 5, having an underneath face 6. The one edge of the body portion 5 is beveled, as indicated at 7, while the opposite edge thereof is provided with outwardly-extending tuberous pins or studs 8 8, which may be made separately or as an integral part of the body portion 5. The depending sides 9 9 of the jaws are provided with vertically-disposed slots 10 10, and between the depending sides 9 9 of the jaws is mounted a cam-lever or handle 11. The camlever is held in engagement with the depending sides 9 9 of the jaws by a sleeve 12, which extends through the slots 10 10 and through an opening 14:, formed transversely in the upper end of the cam-lever or handle 11. A headed bolt 15 passes through the sleeve 12, and upon each end of the bolt 1 place a washer 16 and employ a nut 17 to retain the bolt and washers in position. The upper end of the cam-lever or handle 11 is provided with a curved cam-surface 18, which is adapted to engage the beveled face 6.

Pivotally connected to the cam-lever 11 near its upper end is a yoke 19, to which is attached one end of a chain 20.

In operation the alligator- jaws 1 and 2 of the wrench are placed in engagement with a pipe, such as designated by the referencenumeral 21 in Fig. 8 of the drawings. The chain 20 is then swung upwardly between the jaws of the wrench and over the pipe, at which time the chain is placed in engagement with the pins or studs 8, one of the links of said chain being placed between said studs. In so gripping the pipe 21 the cam-lever 11 is placed at an angle to the alligator-jaws, which permits of the jaws moving downwardly in respect to the end of the lever and the sleeve 12 receding to the upper end of the slots 10. After the chain has been placed over the pipe and in engagement with the studs 8 8 the cam-lever 11 is adapted to be moved into alinement with the jaws or as nearly so as possible until the chain has become taut and locked the pipe 21 in engagement with the alligator- jaws 1 and 2 of the wrench, at which time by further moving the lever 11 the pipe 21 can be rotated.

In Fig. 6 of the drawings I have illustrated the studs 8 8 as being carried by a yoke 22, which is secured to the sides of the jaws 1 and 2, and this construction can be readily employed in connection with my improved wrench, it of course being understood that the studs may, if it is deemed desirable, be made integral with the body portion 5 of the aws.

From the foregoing it will be observed that any-sized pipe that will fit within the alligatorjaws of my improved wrench can be readily gripped, and in this connection I do not care to confine myself to any-specific size of wrench, as the same may be readily made of such proportions as to grip large sections of pipes or tubing.

While I have herein described the preferred manner of constructing my improved wrench, it is obvious that various changes may be made in the details of construction without departing from the general spirit and scope ofthe invention.

WhatI claim, and desire to secure by Letters Patent, is

1. An implement for the purpose set forth comprising a pair of alligator-jaws, each having a depending portion provided with a vertical slot, a body portion spacing said jaws apart and to which they are secured, pins carried by said body portion, the said body portion having an incline underneath face, a lever having a beveled upper end received between the depending portions of the jaws and engaging the incline face of said body portion, a sleeve passing through said lever and through the said slots, a bolt passing through said sleeve for securing the lever to the jaws and a chain pivotally connected to the lever and adapted to be engaged with the pins carried by said body portion, substantially as described.

2. In a pipe-wrench, two jaws of alligator form, spaced apart by a body portion interposed therebetween, and having portions depending below said body portion, said depending portions provided with vertical slots, a lever received between said depending portions, and having a beveled upper end to engage an incline lower face on the body portion, means passed through the lever and engaged in said slots to secure the lever to the jaws. a chain having its one end connected to the lever, and means carried by the body portion to which said chain is adapted to be connected after being passed around a pipe, substantially as described. v

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

GEORGE M. GEALY.

Witnesses:

JOHN ZEH, C. E. BRADEN.

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