US1766778A - Pipe wrench - Google Patents

Description

June 24, 1930. G. DELUCA 1,766,778

PIPE WRENCH Filed June 13, 1928 ijn/vanto@ Patented June 24, 1930 L l UNITED STATES PATENT fori-"ICE GIUSEPPE DELUCA, OF RA'YLAND, OHIO i PIPE WRENCH Application led .Tune 13, 1925. Serial No. 284,945.

This invention relates to improvements a transverse opening-in the shank of said pin in pipe wrenches, and the primary object 16 as shown. of the invention is to provide a wrench of The inner faces of the jaws are formed this kind which will have a firm gripping with transverse teeth or serrations 18, so that 5 action upon the pipe without tending to Whentlie jaws are drawn together against` mutilate or crush the same. the pipe, a firm grip will be had upon the Another object of the present invention latter without danger of the pipe turning is to provide a pipe wrench which is extremewithin the jaws. It is particularly noted ly simple and durable in construction, etlithat the inne-r end of the slot 12 is substanio cient in operation, and adapted to be applied tially the saine distance from the pivotal to a pipe and locked thereon with a miniconnection 14 between the jaws as the pivot mum expenditure of time and labor. 16 is from the said pivotal connection 14. The invention consists in the novel form, Thus, when the handle 8 is swung from the combination and arrangement of parts hereposition of Figure 1 toward the left to the 15 inafter more fully described, shown in the position of Figure 2, the pin 10 will movev o5 accompanying drawing and claimed. away from the pivotal connection 14 and In the drawings: have a camming action on the outer wall of Figure 1 is a side elevational view of a the slot 12 so as to swing the jaw 11 toward wrench embodying the present invention, lthe jaw 15 and thereby cause the jaws to 2O with the jaws in released position. grip the pipe with a force proportional to 'I0 Figure 2 is a similar view with the jaws the force applied to the handle. Naturally, in clamping position and applied to a pipe; in this operation, the handle 8 swings about and the removablel pivot pin 16 to obtain the Figure 3 is an edge elevational view lookhandle lever grip described. 25 ing toward the right 0f Figure 1 In use, the pin 16 is removed and the outer 75 Referring more in detail t0 Jche drawing, jaw 15 is swung outwardly on the pivot 14 to the present wrench embodies an elongated open position. The jaw 11 is then engaged handle 8 whose outer end is bifurcated to Wltll the pipe and the 15 is again closed provide a pair of spaced legs 9 having a pair against the .opposite side of the pipe, whereot' transversely alined openings inwardly of upon the pivot pin 16 is replaced with the so the free ends thereof t0 receive a pin 10 parts disposed as in Figure 1. The handle 8 forming a pivotal and sliding attachment is then swung to the left for gripping the pipe for a segmental inner jaw 11 by loosely passsecurely as illustrated in Figure 2. ing through a longitudinal elongated slot It will be noted that the jaws 11 and 15 are 35 12, provided in the shank 13 of said jaw 11. of substantially semi-circular form and are S5 The shank 13, which is straight, is provided adapted to grip the pipe substantially evenly on the inner end of the jaw 11 and slidably entirely about the circumference of the lateXtends between the legs 9 at an oblique ter, thereby enabling a firm grip to be had angle to the longitudinal axis of the handle 8 upon the pipe without danger of crushing the *0 as clearly shown in the drawing. The jaw latter under ordinary conditions of use. 90

11 is pivoted at its outer end by means of Moreover, the construction is extremely sim- `a pin 14 to a second segmental jaw 15 whose ple and durable, avoiding the use of unreinner end is detachably pivoted between the liable and objectionable latching members alouter ends of the legs 9 by means of a rethough permitting ready application of the movable pivot pin 16 which passes through wrench to the pipe and providing for secure- 95 transversely alined openings in the outer ly maintaining the wrench on the pipe when ends of the legs 9 and through an opening in once applied. the inner end of the jaw 15. The pin 16 Minor changes may be made without demay be retained in place by any suitable parting from the spirit and scope of the inmeans such as a Cotter pin 17 passing through vention as claimed. mi)

What I claim as new is:

In a pipe wrench, a handle, complementary inner and outer jaws pvotally connected together at their outer ende, each of said jaws being formed at its inner end with a straight shank Substantially parallel to each other, and approximately perpendicular to the handle, the shank of the inner jaw being formed with a longitudinally disposed slot, said handle being pivoted at one end to the inner end portion of the shank carried by the outer jaw, and a pin carried by the pivoted end portion of the handle for cooperation with the aforementioned Slot. f

In testimony whereof I aflix my signature.

GIUSEPPE DELUCA.

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