US278264A - Pipe-tongs - Google Patents

Description

(No Model.)

T. PATTON.

PIPE TONGS. No. 278,264. Patented May 22,1883.

witness-1% p UNITED STATES PATENT -OFFICE.

THOMAS PATTON, OF CLEVELAND, OHIO.

PIPE-'TONGS.

SPECIFICATION forming part of Letters Patent No. 278,264, dated May 22, 1883.

Application filed March 20, 1883. No inodcl.)

To all whom it may concern:

Be it known that I, THOMAS PATTON, of Cleveland, in thecounty ofOuyahoga and State of Ohio, have invented certain new and useful Improvements in Pipe Tongs or Wrenches; and I do hereby declare that the following is a full, clear, and exactv description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompany ing drawings, and to the letters of reference marked thereon, which form part of this specification.

My invention has for its object to provide an improved plumbers pipe tongs or wrench,

for use in the trades, of such construction as to insure a readyand easy handling of pipes; and

to this end it consists in providing the wrench with three grippin g-bearin gs, made of three distinct parts, consisting of a movable jaw pivoted between two stationary cams or jaws, which are provided with neck portions, the inner face of one portion being made with. a projection extending its length and widening out from one end to the other to fit in a corresponding recess in the other part, thus forming a dowel 0r groove-and-tongue joint, said parts, when put together, resemblin g a solid bifurcated cam,

. and being provided with screw-threads, whereby the parts are fitted in a handle having a corresponding screw-threaded socket therefor; and it consists in other details of construction, which will be hereinafter pointed out.

In the drawings, Figure l is a perspective view ofmy improved wrench, showing the manner in which it is made to grip a pipe. Fig.2 is a perspective view of one part of the sectional stationary cam, showing the graduallywidening recess in the inner side of its neck portion and the manner of fitting the pivotal swingingjaw between the two parts. Fig. 3

is a perspective View of the other. part, showing the projection on the inner side of its neck portion. Fig. 4 is a view illustrating the socketed handle as being screw-threaded, and showing the neck of the separable cam fitted therein and as put together, forming a continuous screw-threaded neck.

Referring more particularly thereto, A represents the handle, which may consist ofa solid bar having a hollowed screw-threaded end for the reception of the screw-threaded neck A, formed by the joinderof the parts a I) of the sectional stationary cam, or it may be a tubular piece screw-threaded at the end,or any obvious form for the manipulation of the device. That part of the device termed the stationary "jaw or 'carn B is made in two pieces, a b, as shown, and when fitted together by the projection on the inner face of one part fitting into a correspondin g recess on the opposite face of the other part, forming a neck, the periphery of which is round and screw-threaded to fit-in the handle, as before mentioned. These parts turn at a right angle to the handle, and are rounded or curved on the top, and are also ratcheted orserrated. The end of the parts a b, forming the neck A, are each made thicker at the inner face of said neck portions, producing a flange or edge, 0, on each of said parts, which incline somewhat downward toward the forward end of the parts. These sections, when fitted together by the increased thickness at the neck, form a space between them suflicient to pivottherein a movable jaw, G, as shown at -c, by a pin running therethrough provided with a not at each end or any suitable means. Said movable jaw 0 curves or turns up at one end, which is serrated, said turned-up and serrated end being adapted to fit around and bite into and hold a pipe on the opposite-side to which it is engaged by the stationary cam. Thisjaw has extended side cheeks, d, which are formed by the serrated portion of the jaw being made wider, so as to give a greater gripping-surface and to coact with the gripping-surface of thetwo serrated endsof the stationary cam B. The checks (1 also, when the device is unemployed, act to hold thejaw in a position to more readily take hold, the cheeks resting against the top edge of the parts a. b, near their extremity, which is not serrated.

The advantagesof my improvement will be apparent, as by myconstruction of pipe-tongs I obtain a'device made in separable parts, 5

whereby three gripping-points are obtained.

1 am aware that wrenches have been'iu vented wherebya greater or less number of grippingpoints are obtained; but by my construction these objects are attained in formingthe parts differently and in such manner that they can be replaced when they become worn and in jured or one part deteriorate more rapidly than' another; and I am aware that cam-heads of a pipe-wrench'have been formed integral with the handle thereof, but in mine these parts are separable.

Other advantages of my device will be ob vious to the skilled mechanic, such as the easy manner in which it can be manufactured, which I prefer to do in the ordinary drop-forge, so that it does away with the necessity of slottin gout, whichis necessary in many instances, and thus lessens its cost.

Having thus described my invention, what I claim is I 1. In a pipe-wrench, the combination of the serrated parts a b of the oanrhead with the handle, as described, said part I) having the projection adapted to fit in the part a, forming aneck, said parts being separable, as and in j the manner described.

2. In a pipe-Wrench, the combination of the rigid cam of two separable parts, forming a continuous screw-threaded neck when put together, as described, and the socketed handle with the movable pivoted curvedjaw, saidjaw beingserrated and formed with the side cheeks for holding it in position,- as set forth.

-23. In a pipe-wrench, the handle formed of either a hollow or solid bar, providedat one end with a screw-threaded socket, in combination with the parts a I), joined and forming the screw-threaded neck, as described, and the curved movable jaw pivoted between them, said parts being formed and connected, substantially as described.

4. The combination, in a pipe-wrench, of the side jaws or parts provided with tongue-andgrooved tapering joints and central serrated piece, the former being adapted to fit a socketed handle, as set forth.

5. The combination, in a pipe-wrench, of the side jaws tongued and grooved together and increased in thickness to form a space between the jaws, a central gripping-jaw pivoted and working in said space, which jaw is enlarged at its serrated end to keepit in place on the jaws and to counterbalance the pressure and gripping-surface on each side of a pipe, as set forth.

G. A pipe-wrench consisting of the central pivoted jaw, the separable side portions of the cam, as described, and handle, the side portions being socketed in the handle, as an article of manufacture.

' In testimony that.I claim the foregoing as my own I hereunto affiX my signature in presence of two witnesses.

THOMAS PAITON;

Witnesses ALFRED WooDIN, DAVID Dow.

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