US651220A - Pipe-wrench. - Google Patents

Description

n 651,220. mum .5-,- I900;

A. w. WABNOCK.

PIPE WRENCH.

(Applicatipn filed Sept. 23; 1899.) (N o M o d a I WITIJEEEEEI wam/ 4 UNITED STATES PATENT CFFICE.

AMOS w. WARNOOK, or BOSTON, MASSACHUSETTS.

"PIPE-WRENCH.

{SPECIFICATION forming part or Letters Patent No. 651,220, dated June 5, 1906.

Application filed September 23, 1899. semi No. 731,409. (No model.)

To all whom it may concern.-

Be it known that I, AMos W. WARNOOK, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Pipe-Wren ches, of which the following is a specification.

This invention relates to an improved wrench adapted particularly for grasping or handling metal or other pipe having a smooth or highly-polished or plated surface; and it relates to that class of pipe-wrenches in which a strap, preferably of fabric, is employed, such strap being formed into a loop for the purpose of engaging a pipe.

The two principal objects of my invention are to provide a pipewrench which will be absolutely efficient for the purpose for which it is constructed and to construct a pipewrench with the greatest simplicity and the least possible number of parts, the parts or pieces aside from the strap which constitute my wrench being only threeviz., the frame or handle, a shackle, and a pivot-pin, whereby the shackle is connected with the frame.

The nature of the invention in detail is fully described below, and illustrated in the accompanying drawings, in which- Figure 1 is a plan View showing my wrench engaging a pipe. Fig. 2 is a side elevation of the same.

Similar letters of reference indicate corresponding parts.

A represents the frame or handle, formed with the integral head B. This head is turned up at substantially the forward angle shown at Bsay forty-five degrees and its extreme end or nose B" is rounded and somewhat diminished in thickness, as shown in Fig. 2. The rear portion of the head is horizontally bored to receive a pivot-pin C, by means of which a shackle D is pivotally secured to the frame, said shackle extending up from the 7 head behind the portion B and slightly above the upper end of said portion. The strap E is formed with a loop E, the portion E of which is preferably cemented or otherwise secured to the main body of the strap, such loop being for the purpose of attaching it to the shackle.

In operation the end a of the strap is passed around and under the pipe S and thence over the nose B of the head and back through the shackle along the upper surface of the frame. The wrench takes its position on or with relation to the pipe by lifting the handle and grips the pipe and turns it by depressing the handle. When the handle is depressed, the nose B" forces the portion e of the strap against the loop, thus locking the strap between the nose and that part of the loop which is next the shackle, holding the adjustment where it is set, so that almost the entire circumference of the pipe is grasped by the strap. In other words, the head B B B almost completes the circle when gripping the pipe. The angle of the head and its length with relation to that of the shackle have been determined after much experiment and are such that when the frame or handle is horizontal the shackle extends up somewhat above the end of the nose and at nearly or quite the same angle as the head. Moreover, the length of the upturned head in connection with its angle enables the operator to readjust the position of the strap on the pipe without losing the bearing.

As will be readily understood, the adjustment is easy, the wrench will not mar a polished pipe, and the device can be applied to a pipe in a limited space-as in the corner of a room, for example.

The economy of construction can be appreciated when it is remembered that there are but three metallic parts to the wrench, including the pivot and the shackle.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The herein described improved pipewrench comprising the frame'or handle provided with the forwardly and upwardly extending head B, B, terminating in the upper end or nose B"; the shackle D pivotally secured to said frame and swinging upward therefrom, and the strap E made of fabric or equivalent non-metallic flexible material and formed with the loop E through which the shackle extends, and adapted to extend around the pipe, up between it and the nose B." and between said nose and the rear portion of the under layer of the loop, substantially as described.

2. The herein-describedimproved pipevided with the forwardly and upwardly extending head B, B, terminating in theupper end or nose B; the shackle D pivotaily secured to the frame and extending up therefrom to a point somewhat higher than said extreme upper end or nose, and the strapE made of fabric or equivalent non-metallic flexible material and formed with the loop E through which the shackle extends, and

adapted to extend around the pipe, up bem tween it and the nose B and between said nose and the rear portion of the under layer of the loop, substantially as set forth.

AMOS WV. VVARNOOK.

\Vitnesses:

HENRY W. WILLIAMS, A. N. BONNEY.

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