US429088A - Pipe-wrench - Google Patents

Description

E. O. ELY.-

PIPE WRENCH.

- (No Model.)

No, 429,088. Patented May 27, 1890.

UNITED STATES PATENT OFFICE.

EDWVARD O. ELY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE TRIMONT MANUFACTURING COMPANY, OF PORTLAND, MAINE.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 429,088, dated May 27, 1890. Application filed March 27, 1890. Serial No. 345,563, (No model.)

To all whom it may concern: legs Z), which are adapted to bear against Be it known that I, EDWARD O. ELY, of lugs or cars 19 secured to or forming part of Boston, county of Suffolk, State of Massathe handle on its rear side. The lower porchusetts, have invented an Improvement in tion of the rear faces of the sides of the guide Pipe-Wrenches, of which the following dea areinclined orcurved away from the front 5;

scription, in connection with the accompanyface of the lugs 19 from a point preferably subing drawings, is a specification, like letters stantially near the center of the said lugs, as on the drawings representing like parts. at 2, so as to permit of a slight rocking mo- This invention in pipe-wrenches has for its tion of the guide a and the upper portion of object to provide a pipe-wrench of simple the rear face of the sides of the guide a is construction at a minimum cost. preferably slightly inclined upward away My invention in pipe-wrenches therefore from the said lugs. The lugs 11 act as stops consistsin the combination,witha handle proto limit the movement of the guide a when vided with a fixed jaw and having lugs 12 of the latter is rocked on its pivot 19, and by I 5 a guide pivoted to said handle, a movable regulating the incline or curve I) the bite of jaw carried by said guide, and a nut to adthe wrench upon the pipe may be regulated. just the said movable jaw, the said guide The handle A,substantially below the pivot having legs adapted to engage the lugs on of the movable jaw, is provided with a shoulthe handle to limit the rocking movement of der b against which the nut a is adapted to 20 the guide and thereby the bite of the wrench, strike when the movable guide a is rocked substantially as will be described. on its pivot, the said shoulder acting to take Other features of my invention will be a part of the strain imposed upon the wrench. pointed out in the claims at the end of this The lugs 6 which form the rear stop for the specification. movable guide a also serve to take a por- 2 5 Figure 1 is a side elevation of a pipe-wrench tion of the strain, and the shoulders (I? on the constructed in accordance with my invention; fixed jaw also serve to take a portion of the Fig. 2, a longitudinal section of .a suificient strain. In this manner it will be seen that portion of the pipe-wrench shown in Fig. 1 to the strain upon the wrench is largely distribmore clearly show the construction of the uted and does not come upon any one point,

30 same; Fig. 3, a top or plan view of the hanthereby greatly diminishing the danger of dle and fixed jaw shown in Fig. 1, the handle breaking of the wrench at any one point. being partially broken off; Fig. 4:, a detail of The handleAon its rear side near the guide the movable jaw and the parts carried by it; a is provided with a socket, in which is 10- and Fig. 5, a section of the handle on linexm, cated a spring 0, normally acting upon a 3 Fig. 3. plunger or rod 0, provided with a head 0 The handle A, preferably made of steel, is which is limited in its downward movement provided at one end with an enlarged head a, by suitable shoulders on the inner side of the having teeth a, to form a jaw, which is herelugs 19 in shown as forming an integral part. of the The movable guide a is provided with an 40 handle; but, if desired, it may be formed arm a extended over the cap 0 and norseparately therefrom and secured thereto by mally resting thereon, the spring 0 permitrivets or in other usual manner. The jaw ting the movable jaw a and its guide a to a at its rear portion is cut away to form be moved, so as to turn the guide on its pivot shoulders a (see Fig. 3,) against which bear 1) and release the wrench from the pipe when 5 the sides of a guide a for the movable jaw a, desired, thereby preventing locking of the which is secured within the said guide by the said wrench. nut a in usual manner. The guide a is I claim preferably cast in one piece, and is secured 1. In a pipe-wrench, the combination, with to the handle A by the pivot-pin Z), and its a handle provided with a fixed jaw and hav- 5o sides are provided with extended portions or ing lugs W, of a guide pivoted to said handle, 10o

a movable jaw carried by said guide, and a nut to adjust the said movable jaw, the said guide having legs adapted to engage the lugs on the handle to limit the rocking movement of the guide and thereby the bite of the wrench, substantially as described.

2. In a pipe-wrench, the combination, with a handle provided with a fixed jaw and lugs, l) and havin a socket, a spring in said socket,

and a plunger, of a guide pivoted to said handle and provided with legs adapted to engage said lugs, an arm 0 on said guide to act on said plunger, a movable jaw carried by said guide, and a nut to adjust said movable jaw, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDVARD O. ELY.

Witnesses:

JAS. H. CHURCHILL, EMMA J. BENNETT.

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