US445138A - Pipe-cutting machine - Google Patents

Description

(No Model.)

W. H. GARLAND.

PIPE CUTTING MACHINE.

No. 145,138. Patented .13.11.20, 1891.

YME naam: venas co., woruruo., wnswmm'ou, c. c.

UNTTED STATES PATENT OFFICE.

lVlLLlAM Il. GARLAND, OF SOllIEl'-VILLE, MASSAOIlUSETTS, ASSIGNOR OF rTHREE-FORTI'IS TO JAMES NICOL, OF SAME PLACE, AND JAMES lV. llRlNE AND GEORGE A. LLOYD, BOTH OF ARLIN iTO, MASSAOHUSWTS.

PIPE-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 445,138, dated January 20, 1891.

Application tiled April 19, 1890. Serial No. 348,683. (No modeL) To all whom it may concer/t:

De it known that l, WILLIAM Il. GARLAND, of Somerville, county of Middlesex, State of Massachusetts, have invented an Improvement in Pipe-Cuttin0A Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings rep resenting like parts.

This invention has for its object the production of a machine by which to readily and easily cut off cast-iron and other pipes. This work is now commonly done in the street and other places by means of eold-chisels and at considerable expense both in time and labor.

The machine herein to be described is readily portable, and may be quickly applied to and cut off the pipe to the desired length.

My improved pipecutting machine consists, essentially, of a lframe or support. having` clamps to hold the pipe and a rotating wheel having mounted thereon cutter-carriers provided with cutters which are made to move gradually toward the center of the pipe, the said wheel, as herein shown, being adapted to be rotated by a crank having a suitable pinion.

Figure l, in front elevation, represents a pipe-cutting machine embodying my invention, the same being shown as applied to a piece of pipe; Fig. 2, a section of Fig. l in line a: and Fig. 3 a detail showing part of the carrier and the cutter therein.

My improved machine consists, essentially, of two side plates or frames A A', each having a circular hole to receive one end b of the hub b of the toothed Wheel B, the said wheel being herein shown as composed of two semicircular parts having anges which are suitably united by bolts or otherwise. This wheel may be in two or more sections, as desired, it being made in sections to facilitate placing it in position in the side frames. The side frames A A have at their upper ends suitable bearings for a shaft C, having a pinion c, which engages the teeth of the gear B, the said shaft at its upper ends being squared or otherwise shaped for the application thereto of suitable handles e by which to rotate the said shaft and the gear B.

The side pieces A A are provided with suitable clam ps, as D D', to act upon the pipe and confine the same in proper central position with relation to the center of rotation of the toothed gear B. The clamps D, both alike, are herein represented as provided with a series of holes, as 2, for the reception of a bolt 3, by which to confine the clamp in proper position, the said holes being made at such distance apart as to adapt the clamp shown to four different sizes of pipe; but it is obvious that instead of holes the said clamp may have a long slot d3, as represen ted in the clamp D; but the holes are considered the more convenient, as they insure greater accuracy as to the position of the clamp D, and obviate the necessity of the user making measurements or taking special pains to secure just the proper position for the clamp D for the particular pipe to be cut off.

The clamp D is connected to the clamp D by bolts d, extended through ears in the said clamps, the rotation of the said bolts, which may be of any usual or suitable kind, enabling the lower clamp D to be brought up firmly in contact with the side of the pipe, the bolt d2 in the slot d3 of the clamp heilig used to aid in securing the clamp D in its adjusted position.

The rotating gear or wheel B, as herein shown, has pivoted upon it at e in an adjustable mahner a cutter-carrier E,the inner end of which is suitably shaped to receive the shank ofa cutting-ott tool, as e', the said shank being preferably contained in a box c2, and is herein shown as held in adjusted position by a set-screw e3.

The adjustment of the outer end of the cutter-carrier E by moving the bolt e up and down in the slot c4 enables the cutting-edge of the tool to be always brought into proper central line, in order that it may cut freely into the pipe, as will be understood from those conversant with the action of cutting-o tools, and the inner or cutter-carrying end of the said carrier E has a bolt E moving in a radial slot in said wheel B, (indicated by dotted lines in Fig. 2,) the said bolt being clamped against the wheel B to prevent the cutter from jump inv.

IOO

The pipe P to be eut off will be suitably supported upon a horse, bench, or otherwise, and the tool herein described will be placed upon it and' clamped on the pipe in position, as it Will be obvious that this may be done readily, owing to the fact that the rotating wheel B is made in sections, so that it may be bolted together, and so, also, it will be understood, that the clamp is made in sections and f bolted together, so as to be readily separable and be removed from the pipe or applied to the pipe at any point between its ends. The operator will then rotate the shaft C, and thereby rotate the gear or Wheel B, causing the same to travel about the pipe, the tool e cutting into the periphery of the same.

Itis obvious that the tool must be fed gradually toward the center of the pipe in order to cut the same through, and to accomplish this I have provided a feed-screw f, which is set into a threaded block 6, having a small projection,also provided with ascrew-thread, the said projection receiving a nut?, the projection being adapted to be adjusted toward and from the center of rotation of the wheel B in the slot referred to and designated by dotted lines in Fig. 2. The head 8 of the screw is herein represented as provided with a series of pins or projections, one of which during each rotation of the wheel B acts upon a snitable'plate, as g, secured to the side frame A.

In operation the block G is adjusted upon the wheel B according to the size of the pipe to be cut, and the feed-screw is screwed down so that its inner end acts upon the cutter-can rier about as represented in Fig. 2, and thereafter during each rotation of the wheel B the feed-screw is turned a little, so as to cause the said feed-screw to gradually force the cutter farther and farther into the pipe.

I do not desire to limit my invention tothe particular construction of the feed device for the cutter herein shown, as the same may be of any usual construction, and its head may be shaped in any usual manner so as to be acted upon and enable the feedscrew to be rotated at the desired speed.

YVhile I prefer to use teeth between the shaft C and the periphery of the wheel B, in order to effectthe rotation of the latter wheel, I do not desire to limit this invention to the eXactshape of the teeth, nor to the particular connecting means between the shaft C and the wheel B whereby the latter is rotated.

I claim*- I. In a machine for cutting olf pipe, a rotating wheel and a pi vot-ed cutter-Carrier made adjustable thereon, an adj ustable pivot for said cutter-carrier, whereby the cutting-edge of the tool is brought into proper central line, a radial slot in said wheel, a bolt at the inner end of said cutter-carrier adapted to enter said slot and to be clamped against the wheel to prevent the cutter from jumping, and a cutter, and a feed-screw for moving the free end ol' the said cutter-carrier, combined with clamps to clamp the pipe to be cut,`substan tially as described.

2. In a machine forcutting oit pipe, the side frames and the rotating divided or separable wheel mounted therein and carrying a cutter, combined with adjustable clamps D D', having ears, bolts extended through said ears and connecting the clamps, and means, as dcscribed, for rigidly securing the clamps to the side frames in adjustable positions, to operate substantially as described.

3. A pipe-cutting` machine containing the following instrumentalities, viz: side pieces,

a slot-ted rotating wheel having bearings in and supported by and between the said side pieces, a plvoted cutter-carrier E, provided with a cutter vertically adjustable therein, a threaded block having a projection to enter a slot in the wheel, a feed-screw carried by said block, means for holding said block in adjusted position and for adjusting the pivot of the cutter-carrier, a bolt at the inner end of the cutter-carrier, a radial slot in the wheel in which said bolt enters and means to clamp t-he bolt against the wheel, clamps to hold in central position the pipe to be cut, and means for rotating the said wheel, substantially as described.

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

lVILLIAM ll. GARLAND.

lVitnesses:

GEO. W. GREGORY, EMMA J. BENNETT.

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