US722144A - Pipe-wrench. - Google Patents

Description

No. 722,144. PATENTBD MAR; 3, 1903. J. J. RHINELANDER.

PIPE WRENCH.

APPLICATION FILED SEPT. 20, 1902.

NO MODEL.

Frames ATENT JAMES J. RHINELANDER, OF BUTLER, PENNSYLVANIA.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 722,144, dated March 3, 1903.

Application filed September 20,1902. Serial No. 124,233. (No model.)

To alt whom it may concern:

Be it known that I, JAMES J. RHINELANDER, a citizen of the United States of America, residing at Butler, in the county of Butler and State of Pennsylvania, have invented certain new and useful Improvements in Pipe- WVrenches, of which the following is a specification.

This invention relates to certain new and useful improvements in pipe-wrenches, and relates more particularly to that class having a flexible member for engagement with the exterior of the pipe being operated upon.

My inventionhas for its object to construct a simple and effective pipe-wrench of this character, in which I preferably employ a chain for engagement with the pipe, this chain coacting with a pair of jaw members carried by the handle of the wrench.

A further object of the invention is to provide novel connections for the chain with the jaw members carried by the handle; and the invention resides in the novel construction, combination, and arrangement of parts to be hereinafter specifically described and then particularly pointed out in the appended claim.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, and wherein like numerals of reference indicate like parts throughoutthe several views,in which Figure 1 is a detail plan View of the wrench, showing the same in engagement with the pipe, the latter being in dotted lines. Fig. 2 is a side elevation. Fig. 3 is a central vertical sectional view through the jaws and a part of the handle. Fig. A is an inside plan elevation of one of the jaws. Fig. 5 is a detail side and rear plan View of a form of link employed at the end of the chain for connecting with the jaws.

In the accompanying drawings, 1 indicates the handle, comprising a suitably-shaped metal bar, which at its upper end is made substantially square or rectangular in crosssection in order that the jaw members 2 may be suitably fitted to opposite faces thereof. The jaw members 2 are slightly concaved on their upper edges or ends and provided with teeth 3 and are further preferably constructed with a central concave seat 4.- at a point where the pipe naturally engages the jaws. Each jaw is provided on its inner face with guides or side flanges 5, forming a central way 6, which receives the face of the handle 1, the guides or side flanges 5 fitting against opposite faces of the handle. On the inner faces of the jaws 2, adjacent the side flanges or guides 5, are enlargements or bosses 7, in each of which are provided seats 8 and open recesses 9. The flanges are provided with outturned lugs 5", which act as bearings for the chain when small pipes are embraced by the chain in order that the pull exerted by the chain may be nearly straight against the cutting-surface of the teeth. The jaws are fixed to the wrench-handle 1 by means of tap screws or bolts 10, which pass through apertures provided therefor in the jaws and having threaded ends engaging in the threaded apertures provided therefor in the handle near the upper or outer end of the latter. Attachment with the pipe 11 is had by means of the flexible connection 12, which is preferably in the form of a chain. As shown in the present illustration, each link of this chain, except the two end-links, comprises a pair of flat plates 14, which are placed together, and a pair of links 15, which are apertured to register with the apertures in the plates 14. These members are linked together by means of pins or pivots 16, which extend beyond the sides of the links of the chain for the purpose which will presently appear. At the ends of the chain I preferably employ a form of link 17, as shown in Fig. 5 of the drawings. This link has one end of increased thickness to its other end, whereby when the two inside faces of the thickened ends of the links are brought together the thickness of the links at each end will be equal, as shown in Fig. 2 of the drawings, and the lateral movement of the links at the point of connection is prevented. The pin which fastens these links together at one end of the chain has its ends seated in the seats 8, provided therefor in the jaws, and the chain after being passed around the pipe is held by the engaging of the ends of the pins or pivots 16 in the recesses or seats 9 at the opposite side of the jaws. The seats 8, however, are provided at each side of the jaws in order that the chain may be attached at either end, as desired. With this construction it will be observed that the pipe may be turned in either direction without necessitating the disconnecting of the chain from the pipe, as it will be observed that the two toothed portions at either side of the central seat or recess 4 in the jaws may be engaged with the pipe in order to turn the same. In practice the chain is of sufficient length whereby different-sized pipes may be accommodated, and the connection and disconnection of the chain with the jaws is easily and quickly eifected, while at the same time when the pins 16 are engaged in the sides 9 and leverage applied to the handle the chain is eifectually prevented from becoming accidentally disengaged.

While I have herein shown a preferable form of my invention as it is practiced by me, yet I do not wish to be limited to this exact construction, as it will be observed that slight changes may be made in the details of construction without departing from the general spirit of my invention.

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

In a wrench, two serrated jaws lying parallel and having their'upper edges on one side of the center at an angle to the edges on the opposite side, flanges on the inner faces of" the jaws forming guides, said flanges having integral lugs at their tops standing outwardly at right angles to the flanges, forming bearings for links of a chain, bosses formed with the flanges and extending along the lower pose described.

In testimony whereof I aifix my signature, in the presence of two witnesses, this 18th day of September, 1902.

JAMES J. RHINELANDER.

Witnesses:

ALBERT L. BowsER, W. A. HAUOK.

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