US1294404A - Expanding and cutting-off tool. - Google Patents

Description

F. T. CONLEY,

EXPANDING AND CUTTING-OFF TOOL.

APPLICATION FILED JULY 18. I917.

1,294,404, Patented Feb. 18, 1919.

I l 1 TNESS (ATTO NEYS FREDERICK T. CONLEY, OF JAMAICA PLAIN, MASSACHUSETTS.

EXPANDING AND CUTTING-OFF TOOL.

Specification of Letters Patent.

Patented Feb. 18, 1919.

Application filed July 18, 1917. Serial No. 181,416.

To all whom it may concern:

Be it known that I, FREDERICK T. CoNLEY, a citizen of the United States, residing at Jamaica Plain, in the county of Suffolk, in the State of Massachusetts, have invented a certain new and useful Improvement in Expanding and Cutting-OH" Tools, of which the following is a specification, reference being had to the accompanying drawings.

The object of this invention is to provide a specially convenient and effective portable device for use in expanding the ends of piping and particularly small brass or copper tubing such as is used more or less commonly in connection with automobile engines and in like places, and my said invention also includes means for cutting off such tubing and for milling or knurling its cireumferential surface if desired.

In order to explain my invention clearly I have provided the annexed d'rawlngs, in which Figure 1 is mainly a side elevation of an implement embodying my present improvements and Fig. 2 is a side View of the same.

Fig. 3 is a detached side view of the knife lever 1920. Fig. 4 is a plan view of the frame 15 and Fig. 5 is an inner side face view of the jaw 10.

By preference, I manufacture my improved implement as a hand tool which may be of light weight, and inexpensive as to cost and which may be conveniently used, for the several features for which it is designed, either separately or collectively, that is to say a pipe en-d may be expanded, or cut off, or knurled, by separate operations 'or such pipe may be expanded, lmurled and cut olf. As here illustrated, the several distinctive mechanical features of the implement are mounted cooperatively upon a pair of pliers consisting of a single jaw 10 and a bifurcated jaw 11 which jaws are fulcrumed at 12; said jaws being connected with, or formed as integral parts of operating handles 13 and 11 respectively.

The pliers thus provided are utilized for clasping a piece of p pe and holding it against rotation while it is being expanded or cut off, as the case maybe. I will now describe the special means which I have provided for expanding said pipe.

Fulcrumed on the same bolt (12) which connects the two plier members l011 is a frame 15 in which is mounted a screw 16 whose inner end carries an expanding head 17 and whose outer end has fixed thereon a thumb-piece 18 by means of which the screw 16 may be turned during the operation of forcing the expanding head 17 into the open end of a piece of pipe; the frame 15 belng -so swiveled on the bolt 12 that it may be readily rocked and adjusted so as to move the expanding head into register with the end of the pipe held by the jaws l011. After having been used to expand the pipe end, the head 17 may be withdrawn from the pipe by simply unscrewing the screw 16 when the frame 15 may be swung to one side, out of the way, as seen in Fig. 1 of the drawings.

The knife for cutting off the pipe end is also fulcrumed upon the screw 12, between the jaws of the pliers, said knife bein of simple lever form, one of whose en s is formed as a cutting edge 19, the other end consisting of a handle 20 which is so located that it may be grasped and used in conjunction with the described pliers whenever it is desired to force the end of knife 19 into cutting engagement with the pipe; it being understood now that said pipe is being held against rotation by a vise or other form of clamp while the combined pliers and cutter are revolved around the pipe.

The hole in the plate which supports the clamp 15 is, intentionally, elongated, as seen in Fig. L, in order that the expander screw 16 may be properly adjusted with relation to the pipe-holdin jaws 1011 and so that the expander hea of greater or lesser diameter, as the case may be.

If desired, the holding jaws of the pliers may be serrated or milled in order that they may the better grip the ipe or other articles which is being clamped? As a convenient and eflective means for clamping the free ends of the handles 1314 of the pliers in fixed relation to each other I have provided a screw-threaded bolt 21 one end of which is fixed in the handle 13 and the other end has mounted thereon a thumbnut 22 (see Fig. 1).

The operation of my described tool is as follows If it is desired to expand the end of a tube the tube is placed between the jaws 10 and 11 and the nut 22 is screwed on the bolt 21 until the tube is held firmly by the jaws.

may register with pipes The expander head 17 is adjusted as to position until itconfronts the open end or the tube, and the screw 16 is rotated in frame 15 until the head 17 is forced into the tube endthe desired distance, resulting in expanding or fiarin the tube end. If it is then desired to at o the flared end portion of the tube thenut 22 is eased back, suflic ently topermit the ipe to be rotated in the jaws lO--11 which t en serve as a bearing and support for the pipe and, meanwhile the expander head serves as an end hearing, or center tool, to prevent both lateral and endwise displacement of the pipe, which latmr may be held fixedly in an ordinary vise. The teol' (including the handle 20 of the knife 19) is then grasped and rotated lcodily around the pipe until the knife cuts through the shell essence 'manufactured at reasonably small cost.

Having thus described my invention, and the manner 1n whlch it is used, I claim as new and wish to secure by Letters Patent A tool of the class referred to, comprising clamping .jaws, screw-threaded means for ad ustmg and holding said jaws with respect to each other, cuttin 0E 'means consisting of a fulcrumed kni e and operating handle mounted on said jaws, and screwthreaded laterally adjustable means for expending a pipe end held said jaws.

, FREDERIC T. OONLEY.

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