US402689A - Pipe-welding bell - Google Patents

Description

(No MM) J. SIMPSON;

PIPE WELDING BELL.

Patented May '7, 1889.

INVENTOR.

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UNITED STATES PATENT OFFICE.

JAMES SIMPSON, OF MCKEESPORT, PENNSYLVANIA.

PIPE-WELDING BELL.

SPECIFICATION forming part of Letters Patent No. 402,689, dated May '7', 1889.

Application filed February 13, 1889. Serial No. 299,776. (No model.)

To all whom it may concern:

Beit known that 1, JAMES SIMPSON, a resident of McKeesport, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Pipe-Welding Bells, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a vertical longitudinal section of my improved bell, showing a pipe in the act of being drawn therethrough. Fig. 2 is a sectional plan View thereof. Fig. 3 is a vertical cross-section on the line 00 act Fig. 1.

Like symbols of reference indicate like parts in each.

Heretofore in the manufacture of pipe there has always been a difficulty experienced (especially in the use of thin pipe-iron) in preventing the edges from turning in in the bell, and thus making an irregular projecting seam on the interior of the pipe, which spoils it for practical use. This fact is the source ofv great loss in the manufacture of pipe, and it is the object of my invention to prevent it. To this end I employ, in connection with the bell, a tongue which projects lengthwise within the same, and which is so placed relatively to the inside of the bell as to leave an intervening space preferably but little greater than the thickness of the pipe, so that in drawing the pipe through the bell the edges of the seam shall be supported and shall be prevented from turning in.

In the accompanying drawings, A represents the bell, which is or may be of the usual form. B is the tongue which projects within the bell, and C is the pipe. The tongue is preferably attached to the bell by means of a key on the tongue and a keyway or groove on the bell, as shown in the drawings, so that it may be easily removable, though the tongue may be otherwise attached. In passing through the bell the edges of the pipe-iron rest on the surface of the tongue and are guided thereby and prevented from turning in, as will be readily understood. The other accessory parts of the apparatus-such as the bell-holder, the drawing-bench, and the drawing mechanism-are so well understood in the art as to need no detailed illustration or description.

In order to maintain the bell in a constant position, so that the tongue shall always be uppermost, I prefer to provide the bell with aneye or hook, D, to which may be attached a chain, E, by which the bell is suspended in the proper position. If desired, however, the bell may be thus held by passing a bar through the eye and securing the ends of the bar; or other suitable mechanical appliances may be employed.

The form of the apparatus which I have shown I deem to be most suitable for the purpose for which it is intended. It may, however, be modified in form, proportions, and details of construction by those skilledin the art, since lVhat I claim, broadly, is-

1. In combination with a pipe-welding bell, a tongue arranged within the bell at a short distance from the interior wall thereof, directly beneath the position of the scam in the bell, for the purpose of supporting the seam, substantially as and for the purposes described.

2. In combination with a pipe-welding bell, a tongue fixed to the exterior of the bell and projecting therein in position to fit on the inner side of and to support the seam, substantially as and for the purposes described.

3. In combination with a pipe-welding bell, atongue removably fixed to the exterior of the bell and projecting therein in position to fit on the inner side of and to support the seam, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 5th day of February, A. D. 1889.

JAMES SIMPSON. Witnesses:

WM. M. BELL, D. R. Woon.

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