US592031A

US592031A - waitt

Info

Publication number: US592031A
Authority: US
Publication date: 1897-10-19
Anticipated expiration: 1914-10-19

Description

(No Model.)

G. W. WAITT.

'PIPE WRENCH.

Patented Oct. 19, A1897.

. and more effective wrench ofthis class, and I penetrate iron pipe, while the body of the requisite toughness and strength, but withtion.

composed of the two projecting plates, be-

IINITE STATES PATENT FFICE.

vGEORGE w. wAIrT, OF SAN FRANCIsCO, CALIFORNIA, AssIoNOR To BENJAMIN F. wAIr'r, TRUSTEE, OF SAME PLACE.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent. No. 592,031, dated October 19, 1.897.

Application nea'August 2s, 1896.

To @ZZ whom it 'may concern:

Be it known Jthat I, GEORGE W. WAITT, a citizen of the United States, residing at San Francisco, in the countyof San Francisco and State of California, have invented certain new an d useful Improvements in Pipe-Wrenches; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to pipe-wrenches of the class in which a sliding jaw is combined with a handle, and with a pivoted jaw, the pipe being seized between the two jaws.

My object is to make a simpler, stronger,

further to provide a removable sliding toothed jaw, capable of being separately manufactured of tool-steel, if desired, and hence possessing the requisite hardness, to seize and wrench can be made from cast-steel, of the out the hardness and consequent brittleness which renders tool-steel undesirable for the body of such an implelnent. I have shown in the accompanying" drawings what I consider the best embodiment of my invention to accomplish these objects, and have fully described such construction in this specifica- Figure l is a plan view of the wrench with the casing or handle broken away to show a partial longitudinal section. Fig. 2 is a side elevation of the same character. Fig. 3 is a cross-section through one of the jaws on the line cc no of Fig. l.

A represents the shank or handle of the wrench, which is formed from separate plates of metal da b b', and is rectangular in crosssection and hollow from end to end. At the operating or jaw end of the wrench the plates b b are widened, so as to afford anV oset c,

tween which is pivoted the jawB, upon a pin d. This jaw is of a generally curvilinear form, and projects across and opposite the end of the handle. Its inner or bearing surface is preferably of angular shape, as shown, and may be toothed, if preferred, although this is not essential to the efficiency of the wrench. The plate a of the casing terminatesv at the base of the offset cin order that serial No. 604,161. (ramada.)

room may be given for the enlarged end e of sliding jaw C. A separate flat plate f is set in the space between the projecting plates b, and forms the base of the recess which contains the jaw B, and is also a guide for the sliding jaw C.

lThe jaw B is pressed by a' leaf-spring g, which lies in the recess flush with its edges and which tends to hold the jaw in its operative position, but yields to permit the pipe to be seized.

The jaw C is preferably made from toolsteel, and has a beveled end, adapted to project from'the handle and seize the pipe in the shank of the jaw is pivoted by a pin 7c between ears formed upon a long threaded nut Z, which travels upon the screw m. The

screw has a smooth cylindrical end portion n projecting through the end of the handle, A

where a bearing ois provided for it, and is provided with an operating-handle p.

The sliding jaw, nut, and screw-rod are all vcarried within the wrench handle or casing,

of the handle, for the two reasons just mentioned.

By pivoting the jaw C to its operating-nut -I prevent any binding in the handle; lout such pivoting can only be done, without sacrificing strength, when the jaw is firmly guided and supported by a long bearing within the handle.

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

l. In a pipe-wrench, a hollow handle, a jaw pivoted thereto, a sliding jaw guided within and by the handle, a screw-rod, having a bearing within the handle, and a nut traveling upon said rod, and hinged to said sliding jaw,

substantially as described.

2. In a pipe-Wrench, a handle, hollow, and open at both ends, ajaw pivoted in an oset of said handle, a jaw sliding and guided in said handle, and movable through one of its open ends, a threaded nut Within lthe handle, connected to said jaw, a screwrod engaging with said nut, and projecting through the opposite open end, and an operating-handle on the end of said rod, all substantially as described.

3. In a Wrench, and in combination, a handle composed of plates a, a', I), U, said plates a, a', having projections c, a jaw B, hinged in GEO. IV. \VAITT.

IVitnesses:

L. W. SEELY, M. R. SEELY.