US319289A - Ptpe-joint - Google Patents

Description

(N0 ModeL) H. MQKENNA & G. D. BULMER.

PIPE JOINT.

N0. 319,289. Patented June 2, 1885.

Inventors.

ses.

N. PETERS, Phololithographur. WnhTnglun. D,C.

UNITE HUGH MOKENNA AND GEORGE D. BULMER, OF PENN, ALLEGHENY COUNTY, ASSIGNOBS TO BOOTH & FLINN, OF PITTSBURG, PENNSYLVANIA.

PIPE-JOINT.

SPECIFICATION forming part of Letters Patent No. 319,289, dated June 2, 1885.

7 Application filed April 27,1885. (No model.)

To aZZ whom it may concern:

Be it known that we, HUGH MOKENNA and GEORGE D. BULMER, of Penn township, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Devices for Making the Joints of Natural-Gas Pipes; and we do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which- Figure 1 is a perspective view of a joint illustrating the use of our improvement. Fig. 2 is a longitudinal section of the same. Figs. 3 and 4 are side and edge views of the elastic ring.

Like letters of reference indicatclike parts.

In forming the joints of naturalgas conductors in which tongue-and-socket pipe-seetions are used it has been customary to make the tongue end of a pipesection with an external bead and the bowl end with a large socket so as to receive the bead and form an annular recess around the inserted tongue end of the next section. In natural-gas conductors it is desirable that the joints be closed by a packing of lead poured into the annular recess. In order'to accomplish this pouring, the tongue end of the pipe-section is first entered into the bowl end of the next section and a ring of clay or other material is placed around the inserted pipe at the end of the receiving-pipe, with a lateral pouring-hole on the upper side. This ring forms the fourth side of the annular recess,and retains the lead in position at the end of the receivingpipe until it becomes set in the joint. Among other devices used for this purpose has been a flexible ring of steel, having an inner facing of packing material, which embraced the illserted pipe and was drawn tightly around the same by means of a clamping-screw attached by hooks or other devices to its ends. The objection to this device was that it was liable to become misshapen and not fit perfectly in themouth of the bowl, and the clampingserew arrangement was unhandy and troublesome. By our invention these difficulties are all obviated, and the cost of the appliance is Very much reduced.

In the drawings, it represents the receivingpipe, and b the inserted pipe. 0 is the bead on the end of theinserted pipe; d, the bowl of the receiving-pipe, and e the annular recess formed by the bowl around the end of the inserted pipe.

We make a thick annulus of india-rubber, f, cut at one side, as at f, and to the ends thus formed we attach, by rivets or otherwise, hooks g. This annulus is placed around the inserted pipe I), against the end of the bowl (2, so as to form a fourth side of the recess 0. The two ends are brought near together, the annulus being tightly stretched on the pipe I) by, means of a pair of tongs, h, provided with securing-bar h.

The openingf formsapouring-gate,through which the molten lead can be poured into the annular recess 6, the outer side of the pouring-gate being formed by a lump or wad of clay, i.

The annulusf, being composed entirely of one integral body of very elastic material,

conforms itself exactly to the surface of the pipe 1), making a perfectly-tight joint, and not exposed to distortion, as in the case of the steel ring before mentioned.

The device is cheap and simple. The tongs h are also cheap in construction, easily used, and not in the way.

The whole apparatus facilitates the laying of the pipe and effects a saving of time.

\Vhat we claim as our invention, and desire to secure by Letters Patent, is

1. The combination of the pipe a 1), rubber ring f, provided with hooks g, and the tongs h, substantially as and for the purposes de scribed.

2. A device for closing the bowl end of pipes, for the purpose specified, consisting of the rubber ring f, provided with hooks g, in combination with the tongs h, substantially as and for the purposes described.

In testimony whereof we have hereunto set our hands this 11th day of April, A. D. 1885.

HUGH MOKENNA. GEORGE D. BULMER.

Witnesses:

J. K. SMITH, WV. B. OORWIN.

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