US1495195A - Pipe wrench - Google Patents

Description

' May 27, 1924. 1,495,195

F. J. NAY

PIPE WRENCH Filed May 4. '1923 j UNITED STA Patented May 27, 1924.

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FREDRICK'. NAY, OFLQNGTOIN, KANSAS.

PIPE WRENCH.

Application `iled. May 4, 1923. Serial No. 636,641.

0 all whom imag concern.'

Be it known that I, FREDRICK J. NAY,a citizen of ythe United States, residing at Longton, in the county of Elk and State of Kansas, have invented certain new and useful Improvements in a Pipe Wrench,..of which the following is a specification."

The present invention* relatesV tof a pipe wrench having for its principal object to improve upon devices of this nature by providing a structure which will not slip when engaged with a pipe and which-will onlyl utilize a minimum amount of space so that it may be used in tight places as is often desirable.

Another important object of the invention is to provide a wrench of this nature which is simple and efficient in construction, reliable in operation, inexpensive to manufacture, durable, and well adapted to the purpose for which it is designed.

With the above and numerous other ,ob jects in View as will appear as the description progresses the invention resides in certain novel features of construction and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing Figure 1 is a plan'view of the wrench Aembodying my invention showing the same engaged with a pipe,

Figure 2 is an edge elevation thereof, and

Figure 3 is a perspective view of one of the intermediate links of the wrench.

Referring to the drawing in detail it will be seen that the wrench includes a plurality of pivoted links each of which is in the form of a jaw for gripping a pipe or the like. In the present embodiment of the invention I have shown only four links but of course rothers may be added as may be desired, if the wrench is to be used upon pipes having exceptionally large diameters.

The numeral 1 designates one end link which is provided with a pair of spaced apertured lips 2 at one end and an oii'set hook extension 3 at its other end. The other end link 4 is provided with a single apertured vlip 5 at one end and an offset hook extension 6 at its other end. This end link 4 is provided with an opening 7 adjacent the offset hook extension 6. The two intermediate links 8 are of identical construction. By referring particularly to Figure 3 it will be noted that each intermediate link 8 includes .'nected to each other. edge provided withy ratchet teeth 12 and a body portion having a single apertured lip 9 at one end and a tured lips 10 at the other end.V Thesingle lips which I have mentioned are to be l.disposedb'etween the pairs oflips so that pins 110 may be passed through the apertures thereof and ,the various links pivotally con- Each link khas one these links, therefore, are in the form of jaws which may be placed in gripping relation with a pipe such as is illustrated at 13. The ratchet teeth 12 on one pair of the links namely 1 and 8 are disposed. in opposite directions to the teeth 12 on the other pair of links namely 4 and 8. A cable or rope 14 is tied to the end link 4 by being passed through the opening 7 thereof and is then passed about the hook extension.8 and returned so as to be passed about the hook extension 6. When the pipe 13 is to be turned in a clockwise direction the cable or rope 14 is not passed over the extension 6. The purpose of this extension 6 is to pass the cable thereover when it is desired to rotate the pipe in a counter clockwise direction. By having the teeth arranged as described above it will be seen that this wrench may be used for screwing and unscrewing the pipe without the necessity of removing the wrench from the pipe after having once been placed thereon. By pulling upon this cable or rope it will be seen that the links or jaws may be drawn into tight engagement with the pipe 13 so that the same may be readily rotated. It will also be noted that the wrench is capable of being used both for screwing and uscrewing the pipe and that it may be engaged with a pipe where but little space is provided, thus being capable of being used where the ordinary pipe wrenches are useless.

The particular structure' of the wrench which I have described with a certain degree of particularity relates merely to the preferred embodiment of the invention and it is to be understood that numerous changes in the details of construction and in the combination and arrangement of parts may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

Having thus described my invention what I claim as new is y f l. A wrench of the class described includ ing a plurality of intermediate link jaws and pair of spaced apera pair of end link jaws pivoted together, one of the end link jaws being provided with an opening and both of said end link jaws being provided with hook extensions, and a cable tied to one end link jaw passing through the opening thereof and adapted to pass about the hook extensions so that the link jaws may be drawn into tight engagement with a pipe or the like for the rotation thereof, said link jaws being provided with teeth projecting from one edge for engagement with said pipe or the like.

2. A wrench of the class described comprising a plurality of link jaws pivoted t0- gether including interlnediately disposed link jaws and a pair of end link jaws, the

end link jaws being provided with hooked extensions, a cable iXed at one end to one of the end link jaws so that it may be passed over the extensions for holding the link jaws in engagement with a pipe, and a plurality of teeth arranged on the edges of the jaws, sonie of said teeth extending in one direction and some in another direction whereby the wrench when engaged with a pipe or the like may be used for rotating the pipe or the like either in a clockwise or counterclockwise direction.

In testimony whereo I aiiix my signature in presence of two witnesses.

FREDRICK J. NAY. Witnesses:

RAY LUCAS, JAMES M. CASPER.

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