US182174A - Improvement in pipe-cutters - Google Patents

Description

"J NITED STATES PATENT CDIrIrIcEk WILLIAM R. DALEs, AND ooMEGYs o. LUsBY, oF PHILADELPHIA, PA.

IM PROVEMENT IN PIPE-CUTTERS.

Specification forming part of` Letters Patent No. 182,174, dated September 12, 1876 application tiled August 2, 1876.

To all whom lt may concern' r Beit known that we, WILLIAM R. DALEs,

i and comers GIUSBY, both of the any and county of Phlladelphia, in the State of Pennv Sylvania, have invented certain new and useful Improvementsin `Pipe-Gutters, of which the following is a specification The object of our invention is to provide a device for cutting and threading gas and other metallic pipes, which shall, within small oomsocket back and forth, and cutting tool or die upon the pipe, all as hereinafter more fully set forth.

1n the accompanying drawings, Figure lis Y a side view, in elevation, of a pipe-cutter embodying o'ur improvements; Fig. 2, an end view; Fig. 3, a transverse section at the line a: mot' Fig. 1 Fig. 4, a similar section at the line y y ot Fig. l; Fig. 5, a longitudinal central section; and Fig. 6, an end viewl of the screw-cutting die.'

To carry ont the object of our invention, we

provide a cylindrical tubular socket, A, the internal diameter of which is sufficient/to admit easily the pipe to be operated upon, whichy socket is divided longitudinally into two sections, and is formed with a counter-bore or recess ot greater diameter at one or both of its ends. A cutting-tool, a, is connected adjustably to the socket, so as to have the capacity of being movedl` toward and from its'axis-in this instance by a screw,a,1, working in a nut, a2, on one of the sections of the socket. A

similar cutting-tool may be placed upon the opposite section, if deemed expedient. The

two sections of 'the socket are united by pins a6 passing through lugs rif/,and the socket, when closed, is encircled by a divided clamp or casing, B, within which it tits easily,"and

by which it maybe supported, end motion being prevented by a circular bead, a3, on the socket fitting a corresponding groove in the casing. The halves ot' the casing are pro.

vided with lugs b, through which pins` b1, by which they are hinged together, pass. A socket, b2, is formed on oneof the halves of the `casing B, for the insertion of a handle, b3, for

holding the same, or the handle may be formed directly on or in one piece with the clamp, if

preferred.

A collar, C, formed in twov sections hinged together, encircles the socket- A near one of its ends, and is4 provided with a handle, C',

tion, as required, by the handle C. Instead of the pawl-and-ratchet mechanism shown, the socket might be arranged to be turned by a wrench, if preferred, but we Adeem the arrangement shown to be more convenient and desirable. Divided thimbles a, of different thicknesses, may he inserted within the socket, to adapt it to pipes of smaller diameters.

For the purposeot' cutting threads upon the outer surface of a pipe,a screw-cutting die,

D, is inserted in the recess or counter-bore of l the socket A, at the end opposite that to whichv the cutting-tool a. is attached, and can be sc cured in position either by set-screws or keys, or by having its sides squared and fitting a corresponding recess, with a cap, d, to retain it in position, as shownin Figs. 5 and 6. y

In order to start`V the cut of the die D, and impart a`longitudna1 feed thereto, a collar, E, having an external thread for a portion of its length, of similar pitch to that of the die D, is inserted in the counter-bore of the socket A, at the end opposite that to which the dieis secured, the thread of -the collar E engaging a corresponding internal thread ou a collar, E', which is clamped fast to the pipe by setscrews e bearing on a thimble, e', placed on the pipe.

In the operation of the device, in cutting pipe, the sections of the socket A are put together around the pipeF at anydesired point, and the oasingB and collar C fastenedaround them, the casing B being heldv stationary, simply to support the pipe while it is cut, by engaging the pawl c with the ratchet a4, and rotating the socket within the clamp in the directionof the arrow; the tool a being fed inward, as required, until the cut is completed.

. For cutting a thread upon a pipe, the collar E is secured to the socket A, (the tool @being rst drawn out so as to be clear of the pipe,) and the die D is made fast in position at the opposite end.' The collar E and thimble e' being then clamped fast upon the pipe at such a point as will enable the threads ot' the collars E and E to be in connection before the die commences its cut, the socket A is turned in opposite direction to the arrow by engaging the pawl c and ratchet a5, carrying With itthe die D and cutting the thread required.

By the use of our improvements we are enabled to cut and thread pipe at any desired hp 'oint Without necessitating the breaking of joints or removal 'of other portions, while the small amount of projection of the socket and casing beyond the pipe, with the capability of adjusting the device thereon at any desired angle, enables it to be operated within contracted limits, and without interference from adjacent objects, l

We claim as our invention and desire to secure by Letters Patentl. The divided collar C, having handle C',

and pawls c' c', in combination with the socket

Images