US851137A - Pipe-nipple holder. - Google Patents

Description

No. 851,137. PATENIED APR. 23, 1907.

' R. E. MANLEY.

PIPE NIPPLE HOLDER,

APPLICATION FILED JAN.19, 1006. v

wuwmu I I I Q 7 I ROBERT E. MANLEY, OF HANOVER, PENNSYLVANIA.

PIPE-NIPPLE HOLDER.

Specification of Letters Patent.

Patented April. 23, 1907.

Application filed January 19, 1906. Serial No. 296,860.

To all whom it may concern:

Be it known that 1, ROBERT E. MANLEY, a citizen of the United States, residing at Hanover, in the county of York and State of Pennsylvania, have invented certain new and useful Improvements in Pipe-Nipple Holders; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had. to the accompanying drawings, forming a part of this specification, and to the figures and letters of reference marked thereon.

This invention relates to devices for holding short sections of pipe during the threading operation to form pipe nipples.

In forming pipe nipples, it is customary to thread one end of a section of pipe, then cut off a portion thereof of a length corresponding to the desired length of nipple and subsequently thread the end of said section not previously threaded. With the appliances heretofore in use, difficulty has been experienced. in holding the short section of pipe during the second threading operation, particularly where a short or all thread nipple is to be formed, owing to the liability of the pipe to collapse or be deformed or have its thread mutilated by the holding devices, or on the other hand, where held securely and safely, difficulty has been experienced in releasing it from the holding devices without causing deformation or mutilation of the threads.

The present invention has for its object to overcome the difiiculties before mentioned, and to provide a device which will securely and safely hold sections of pipe previously threaded, of any length, and at the same time permit of the ready release of the complete nipple without deformation or mutilation; a further object of the invention being to provide a device of this character which may be readily handled with the ordinary plumbers appliances and which may therefore constitute a part of the plumbers kit and be well adapted to be carried about withhim in the performance of his duties.

The invention consists primarily, in a stock adapted to be held inan ordinary pipe vice and carrying at one end a nipple holding sleeve adapted to be locked against rotation with relation to the stock, the arrangement being such that the nipple held. by the sleeve may be loosened by first releasing the sleeve from the stock and then rotating the sleeve and nipple with relation to the stock.

Figure 1 is a perspective view of a nipple holding device embodying the present im provements, the nipple being shown separated therefrom and the locking sleeve in dotted lines in its release position. Fig. 2 is a longitudinal section through the device with. a short section of pipe held therein from. which a nipple is to be formed. Fig. 3 is a similar view showing the completely formed nipple but with the parts of the holding de vice in such position that the nipple may be readily removed therefrom.

Like lettersof reference in the several figures indicate the same parts.

In the device illustrated, the stock Ais shown in the form of a cylindric sh aft which may be readily clamped at its rear end in an ordinary pipe vice. At its forward end is a head A of somewhat greater diameter than the shaft, said head being externally threaded for the reception of a nipple holding sleeve B through which the head may be screwed, or the sleeve screwed. upon the head, so that the outer face of the head may be adjusted to form a cavity in the sleeve of greater or less depth according to the length of the previ ously formed thread on the section of pipe. The outer end of the sleeve B is preferably formed with a taper thread conforming approximately to the taper usually formed in pipe fitting work, this taper thread being also preferably a free thread, so that the section of pipe will readily screw into and out of the same when not bound by striking the end of the head or stock.

To provide a convenient means whereby the sleeve B may be locked against turning with relation to the stock, a lock sleeve D is mounted on the stock in rear of the head A so as to slide longitudinally, but is itself held against rotation on the stock by a spline and groove D. The rear edge of the sleeve B and forward edge of the lock sleeve D are formed with teeth or shoulders sufiicient in number and size to afford the requisite strength and at the same time permit of full engagement with each other when turned through a short angle with relation to each other, whereby the nipple holding sleeve may be locked against turning in practically any position IIO - section of pipe to form the nipple.

both longitudinally and angularly on the head A.

With a device of this character the operation of forming a nipple is as follows; The section of pipe previously threaded at one end and cut to the desired length, is screwed into the sleeve B until a fairly accurate but somewhat loose fit is secured, when the sleeve B and section of pipe are together rotated until the end face of the head of the stock abuts against the end of the pipe, at which point the sleeve B is securelylocked by advancing the locking sleeve and causing the teeth thereon to engage the teetlf on the sleeve B. Further rotation of either the nipple or the nipple holding sleeve is obviously prevented and the usual threading appliances may then be employed for cutting the thread upon the outer end of the After the nipple is threaded, it may be readily released byfirst sliding the locking sleeve back along the stock and then rotating the stock and sleeve B slightly with relation to each other to back the stock away from the nipple when it will be found that the nipple is free and may be screwed out of the nipple holding sleeve without difficulty.

To facilitate the release of the nipple, or the rotation of the nipple and nipple holding sleeve with relation to the stock after the final threading operation, a rotary washer F may be mounted on the end face of the head of the stock as by a central screw f, and the rear face of the washer and forward face of the head may be so formed that contact between the two occurs only at the center, thus the frictional area is reduced and smooth bearing surfaces are provided for moving upon each other during the initial releasing movements between the stock and nipple. While this washer may be dispensed with, its employment is advantageous inasmuch as the end of the section of pipe is usually rough and where allowed to contact directly with the face of the stock or head will cause undue wear on the latter and the two surfaces will to some extent tend tolock together and prevent the sleeve B from being backed off of the stock to release the nipple.

' The device, it will be noted, is very simple, has no delicate parts liable to be broken, and is altogether a device well calculated to withstand the rough usage and hard wear to which plumbers appliances are ordinarily subjected. I

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a nipple holding-device, the combina tion with the sleeve internally threaded from end to end and adapted for the reception of the previously threaded section of pipe from which the nipple is to be formed, of the stock having the externally threaded head adjustable in the sleeve and forming an abutment for the inner end of the nipple, and a locking sleeve cooperating with the rear end of the nipple holding sleeve to prevent rotation of the latter on the stock, said locking sleeve being movable longitudinally but held against rotation on the stock.

.2. In a nipple holding device, such as described, the combination the stock, the externally threaded head on said stock, the rotary washer on the end of said head, there being a reduced bearing surface between the washer and head and the internally threaded nipple holding sleeve into which the head screws, said sleeve being formed with threads in its outer end and with holding teeth on its inner end, of a locking sleeve having holding teeth adapted to cooperate with those on the nipple holding sleeve and mounted to slide on the stock in rear of the head, and means for preventing the rotation of the lock-ing sleeve with relation to the stock; substantially as described.

ROBERT E. MANLEY.

Witnesses:

SHARON E. SMITH, EUGENE B. SMITH.

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