US736372A - Pipe-wrench. - Google Patents

Description

UN TED STATES Patented August 18, 1903.

PATENT OFFICE.

I ANDY FASENMEYER, OF TITUSVILLE, PENNSYLVANIA, ASSIGNOR OF ONE- HALFTO- WILLIAM BAYLISS, OF TITUSVILLE, PENNSYLVANIA.

PIPE-WRENCH."

SPECIFICATION forming part of Letters Patent No. 736,372, dated August 18, 1903.

- Application filed February 12, 1903. Serial No. 143,052. (No model.)

To all whom it may concern: 7 Be it known that I, ANDY FASENMEYER, o Titusville, Crawford county, Pennsylvania, have invented anew and useful Pipe-Wrench, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevation of myimproved IO wrench with the parts in position to engage a pipe. Fig. 2 is a similar View showing the partsgripped as the pipe is turned, and Fig. 3 is a plan view.

My invention relates to that class of pipe- I 5 wrenches wherein the swinging jaw is pivoted to the handle and the pinching-jaw is pivoted to the outer end of the first jaw and has a reoess engaging a prong at the end of the handle; This is a well-known and'popular type of pipe-wrench which is largely used, especially in oil-well works. Heretofore in using such a wrench as the wrench isturned to get a new hold upon the pipe, especially in work-' ing on a ground-pipe, the jaws often drop apart, and in using this type of wrench it is common for the operator to hold the jaws together with his hand when reaching for a new grip on the pipe. My invention overcomes this difficulty and provides a lock which holds the jaws from dropping apart and allows sufficient motion to grip and release the pipe in the opposite movements of the wrench-lever.

It also consists in providing means for holding the locking device both in open and closed position.

Inthe drawings, 2 represents the wrenclr handle, having at its. frontfend a prong To this front end is pivoted the wrench-jaw 4, which is preferably in the form of a cast-" 4 ing having side ears 5, forming a curved recess therein. This casting is'preferablypro vided with ears or lugs 6, which embrace the handle and are pivoted on pin7.

To the outer end of the jaw-casting 4 is pivoted the gripping jaw 8, in-which the steel 7 gripping-piece 9 is fastened in the usual manner. 111 the end "of this gripping-jaw 8 is a recess 10, which is arranged to engage the prong3 on the handle when the wrench is 5 placed upon the pipe to turn it.

known, and I make no claim thereto.

To prevent the gripping-jaw from falling away during the turning, I provide a locking device, which in the form shown consists of a dog 11, having ears 12, which straddle the handle and are pivoted on the screw-bolt 13, extending through the handle. The end of this dog is arranged to engage a transverse recess 14 in the back of the jaw 4, allowing 6c enough freedom of movement to tighten and loosen the wrench, as shown in the two positions of Figs. 1 and 2; but the jaws cannot become disengaged, since the backward swing of the jaw 4 to a point sufficient to disengage the jaw 8 from the prong 3 is stopped by the dog.- To hold the dog in closed position, I preferably employa curved spring 15, having a prong 16 at one end entering a hole in the handle, and an oppositely-projecting prong 7o 17 entering a hole in the hub or ear of the dog. The dog is cut away on this side, as shown in dotted lines, to admit the bent spring. .The spring serves not only to hold the dog in closed position, but also to retain it in open retracted position, and: in Fig. 2 I show such open position in dotted lines. In this case the prong 17 of the spring passes the line bet-ween the screw-bolt 12 and the prong 16, and thereby retains the dog in open position.

In using the tool the gripping-jaw is swung back, the wrench is placed around the pipe, and the jaw 8 then swung in so that the prong 3 engages its recess. The locking-dog is then 85 swung forward into position, and the wrench may be operated without possibility "of its dropping away from the pipe.

The advantages of my invention result from the use 'of the lock, which holds thejaws around'the pipe and prevents the dropping off of the wrench. The operator may use the device with one hand, leaving the otherhand jaw pivoted to the outer end of the first jaw and having loose engagement with the handle, and a pivoted locking device arranged to engage the abutment on the first jaw; substantially as described.

2. A pipe-wrench having a jaw pivoted to the handle and provided with a recess in its outer face beyond the pivot-recess, another jaw pivoted to the outer end of the first jaw and having lug-and-recess engagement with the handle, and a pivoted locking device on the handle arranged to engage the intermediate recess in the first jaw; substantially as described.

3. A pipe-wrench having a jaw pivoted to the handle, another jaw pivoted to the outer end of the first jaw, and having a loose en- ANDYv FASENMEYER.

' Witnesses:

Y SAMUEL GRUMBINE,

BERNICE MCGINNETT.

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