US894627A - Pipe-wrench. - Google Patents

Description

- 0. r. GLIDDBN.

PIPE WRBNGH. APPLICATION FILED FEB- 20, 1-903.

A fro/m5 Y.

PATENTED'JULY 2a, 1908. I

UNITED STATES PATENT OFFICE.

OSCAR F.'GLIDDEN, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO WOLVERINE BRASS WORKS, OF GRAND RAPIDS, MICHIGAN, A CORPORATION OF MICHIGAN.

PIPE-WRENCH.

Specification of Letters Patent.

Patented July 28, 1908.

Application filed February 20, 1908. Serial No. 416,877.

citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented new and useful Improvements in Pipe-Wrenches, of which the following is a specification. I

This invention relates to a wrench intended particularly for handling plated, polished, or smooth pipes, and operating to turn the same through the interposition of a fabric or some similar substance that will not scratch or mar the pipe between the operating wrench and the pipe to be turned, and its object is to construct a wrench of this kind and for this purpose, and in the most simple and efficient manner. I accomplish this obj ect by the construction shown in the accompanying drawings, in which Figure 1 is a side plan of the wrench complete when in operative position with reference to the pipe which is shown in cross-section. Fig.2 is an edge view of the same parts, and Fig. 3 is a cross-section on the line x-x of Fig. 2.

In these drawings the numeral 1 represents the handle or lever bar of the wrench. It is of any convenient size or shape, and I prefer to cut away a portion of the metal as indicated in Fig. 1, in order to make the device lighter.

That end of the handle which in operation is the end adjacent to the pipe, is bent and extended in the form of a bent or curved toe,

as indicated by the numeral 2, and I prefer to make the external surface at this point upon a smooth and regular curve adapted to bear against (save for the interposed fabric) the surface of the pipe to be operated u on.

This curved bearing surface is indicate by the numeral 3.

The central part of the lower end or foot of the handle is cut away so that this central portion has a convex curved form ap roximately parallel to the curver3, whi e the lower portions of the sides of the handle bar at the heel are expanded or extended into the wings 4 4. These wings have the slots 6 6 passing therethrough, and the bolt 5 passes through these slots and is adapted to slide therein and rest at any desired position in the slots.

10 is a strap of fabric, leather, or other suitable materlal. around the bolt 5and bent back upon itself,

Its free end 8 is passed.

lying thereupon at the point 7 where it may be permanently fastened, if desired. The strap is then extended u wardly, forming a loop adapted to encircle t e pipe 11, and then downwardly, passing around the toe 2 and between the same and the part 8, that portion of the strap which thus lies between the toe and the part 8 being indicated by the numeral 9. The strap is then extended upwardly, lying along the exterior convex curve of the lower part of the handle and terminating in the free end 10.

The adjustability of the bolt 5 in the slots 6 6, which adjustment is preferably at substantially a tangent to the eriphery of the pipe or other object engagerf by the wrench, not only rovides for accommodating the difierent t-Ficknesses of strap, as may be desired, but also permits compensation for the varying size of the ipe, so that the most effective amount of binding surface may always be provided as between parts 8 and 9 with reference to the action of the toe 2.

By this construction I have only two arts to my ipe wrench, itself, viz., the hand e lever an the adjustable bolt. Also, by the construction and arrangement shown, the strap grips or binds upon the ipe for nearly its entire circumference, and t e lever handle closely fitting as it does the pipe for a considerable distance along the curved part 3 when force is applied to the lever handle, almost the entire force tends to revolve the pipe upon its axis, and very little of such force tends to pull the pipe away from such axis. At the same time, the form of construction shown provides ,a very long gripping or binding surface between the convex curve of the foot and the adjacent parts 8 and 9 of the strap, thus especially insuring against the slipping of the strap upon itself, more likely to take place if the binding was at one spot only.

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

A wrench of the class described comprising a toe portion provided with a concaved surface adapted to conform approximately to the curvature of the object to be engaged by the wrench, wings arranged at opposite sides of the toe portion and projecting rearwardly therefrom, a bolt extending transversely between said wings and s aced away from the rear or convex side of t e toe portion, and a flexible strap looped around said bolt and adapted to surround a pi e or other object, a In testimony whereof I have hereunto set portion of the strap lying etween the periphmy hand in presence of two subscribing witery of said object and the concave surface of nesses.

the toe portion and another portion of the OSCAR F. GLIDDEN. 5 strap, as well as the loop thereof, lying be- Witnesses:

tween said bolt and the convex side of the MARY S. TooKER,

toe portion. NlARY ScHULTE.

Images