US295885A - Pipe-tongs - Google Patents

Description

(N0 ModeL) S. PULLMAN,

PIPE TONGS. No. 295,885. Patented Mar. 25, 1884.

UNITED STATES PATENT OFFICE.

HERBERT s. PULLMAN, OF'ROGKVILLE, ASSIGNOR TO CHARLES E. BILLI-NGS,

or HARTFORD, CONNECTICUT.

PlPE-TCNGS.

SPECI IPICATION forming part of Letters Patent No. 295,885, dated March 1884.

Application filed February 6, 1884. (No model.)

.To all whom it may concern Be it known that I, HERBERT S. PULLMAN, of Rockville, in the county of Tolland and State of Connecticut, have invented certain new and useful Improvements in Pipe-Tongs;

parts.

Figure l is a side view of a pair of pipetongs embodying myimprovement. In this view one of the jaws is shown in dotted outline in the position the parts must be placed in to change the adj ustment of the jaws. Fig. 2 is a side view of the same tongs with the jaws adjusted to grasp larger objects than as first shown. The head of the fulcrum-stud is 5 r ers or tongs that are made with means for vabroken'away to show the shank.. Fig. 3 is a view in cross-section through the parts, on

line x w of Fig. 2. My improvement relates to the class of plirying and adjusting thejaws so as to grasp. obj ects of small or comparatively large diameter, and particularly to the special class of pipeton gs used for coupling and uncoupling pipes, or putting on or removing gas-j ets and the like. It consists in apair of lever-handles bearing jaws, and so pivoted together by means of a stud or fulcrum-pin working in a series of sockets joined bya slot that the jaws may be adjusted betweenthelimits determined by the extreme sockets by sliding the handles on each other edgewise, and without removing them from contact during this adjustment.

In the accompanying drawings, the letters a and 1; denote two lever-handles, usually of metalas steelbearing as their short arms jaws c and d, that are counterparts of each other. These jaws may be made with the flat pincherfaces 6 at their nose, with the irregular opening f nearer the pivot-stud g, on which the levers fulcrum and turn, this opening being faced with, pipe-grasping teeth of the usual outline, and still nearer the pivot the wire-cutters h. The end of one of the lever-handles may be made in proper form to serve as a screwthe form shown, through the fulcrum-sockets a t or t, terminating-in a broadened head, 9, while the shank of the stud is flattened on opposite sides, so as to be oblong in section. The

sockets i t, of which there may be any desirable plural number, are preferably of uniform diameter, and they are joined by a slot, is, narrower in width than the sockets are in diameter. The shank of the stud in its widest section bears on opposite faces of a socket, the said stud forming the fulcrumof the leverhandles in operating the tool; and to adjust the jaws wider apart, as seen in Fig. 2, the handles are turned on the stud to about ninety degrees with each other. They may then be slipped edgewise in opposite directions until the stud has passed into the next socket, (see the dotted outline in Fig. 1,) the narrow part of the shank passing through the slot. By reversing this operation the jaws may be adjusted to their inner limit, and these adj ustments repeated at any time at will.

I claim as my invention 1. As an improved article of manufacture, pivoted lever-handles with jaws substantially as described, one handle bearing a stud, with a shank of oblong section, and the other handle having a plural number of socket-bearings joined by a narrowed slot, all substantially as described.

2. The combination of lever-handles a and I), having jaws c and d, the handle a bearing the pivot-stud g,with oblong shank, and the handle b having a plural number of sockets, t z", joined by the slot is, whereby the jaws may be adjusted, all substantially as described.

HERBERT S. PULLMAN.

\Vitnesses:

CHAS. L. BURDETT, ED. F. DIMooK.

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