US492834A

US492834A - Pipe-wrench

Info

Publication number: US492834A
Authority: US
Publication date: 1893-03-07
Anticipated expiration: 1910-03-07

Description

(No Model.) G. W. PORTER.

PIPE WRENCH.

Patented Mar. '7, 1893.

UNITED STATES PATENT OFFICE.

GEoRGE w PORTER, OF PARKERSBURG, WEST vIRGINIA.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 492,834, dated March 7, 1893. Application filed November 9, 1891. Renewed January 17I 1893. Serial No. 458,737. (No model.)

To all whom it may concern:

Be it known that I, GEORGE W. PORTER, a citizen of the United States of America, residing at Parkersburg, in the county of Wood, in the State of West Virginia, have invented certain new and useful Improvements in Pipe- Wrenches, of which the following is a specification. 7

My invention relates to improvements in pipe-wrenches of that kind or construction having a pivoted jaw adjustably supported on ahandle, the end of which handle engages with the pipe when the implement is operated.

My invention consists in certain details of construction and the combination of the parts, as hereinbelow specified and particularly pointed out in the claim.

In the accompanying drawings: Figure 1 is a View in elevation of the complete implement, in operative connection with a pipe. Fig. 2 is a view in elevation taken at right angles to the illustration in Fig. 1, and Fig. 3 is a similar view taken with the implement turned in reverse position to the illustration shown in Fig. 2. v

a designates the handle of the implement, provided with screw-threads 1, at its lower portion. The lower end of the handle is formed with a square-faced head 2, integral with the handle; the bottom edge of one of the four sides of which engages the pipef, when the implement is arranged on the pipe, as shown in Fig. 1 of the drawings. threaded portion of the handle is arranged a cross-piece b, the hole through this piece being threaded to engage the threads of the bandle. The outer ends of this cross-piece b are rounded to form bearings 2, 3, on which is pivoted or hung the jaw c. The jaw 0 consists of a single piece of metal having the arms substantially parallel with each other, with On the.

the ends pivoted or hung on the bearings of the cross-piece on the handle; and'having its outer end struck or bent down at an angle to the arms, as seen at c, in Fig. l of the drawings, forming the grip-piece of the jaw and a bridge 0 integral with the arms.

On the face of the cross-piece b on the handle is secured the stem of a T-shaped spring (1, the arms of which bear on the arms of the pivoted jaw and tend to always insure the engagement of the jaw with the pipe.

It will be perceived that by making the head 6 of the handle four sided, four grippingedges are provided whereby the adjustment is made at every quarter turn of the handle through the cross-piece; and that by making the jaw in the shape of a yoke, the grip on the pipe is broadened and'the head e comes centrally between the bars or arms of the jaw.

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

Ina pipe-wrench, the handle a provided .with screw-threads at its lower portion and ranged and combined to operate substantially as specified.

GEORGE W. PORTER. Witnesses:

JOHN GRIGSLEY MoCLUER, WALTER EDMUND MoDoUGLE, WILLIAM HENRY MAYBERRY.