United States Pipe and Foundry Company, LLC

U.S. Pipe and Foundry Company

Robert M Graham

Lawrence S Jones

Billy J Battle

Andrew B Malizio

Harold Kennedy, Jr

George F Rhodes

J James Dunn

A bell and plain end pipe joint are provided wherein the plain end has a raised portion on its outside diameter. A series of locking segments fit into a circumferential groove in the bell of one pipe and engage both the raised portion on the plain pipe and a portion of the bell. Upon an increase in fluid pressure in the pipes, the pipes tend to separate axially and the locking segments also contact and bear against a different portion of the bell. The joint provides a novel means of distributing the axial thrust tending to separate the pipe being joined.

Restrained pipe joint

A device for holding nested bell and plain end push on joint pipes in a fixed position utilizing a novel frame work of simple members fastened firmly together. The inner pipe may be held concentrically or eccentrically with respect to the outer pipe. Padding may be added to protect inside coatings, and safety strapping offers added security that allows an abrasion resistant sheet to be held in place until disassembly occurs.

Pipe nesting device

Bell and plain or beveled end pipe sections are joined together in sealing engagement by placing a gasket between the sections and in radial compression. Pipe whose cross sections may deviate from a true circle and whose diameters may range over a wide tolerance are joined together utilizing an economical gasket, without requiring extremely high assembly forces. A specific portion of the gasket is compressed by a novel compression rib which allows assembly of the system without excessive end force and yet maintains radial compression of the gasket over a wide range of tolerances.

Gasketed pipe joint

A coupling for joining the plain ends of pipe; specifically, plain ended, cast iron soil pipe or plastic drain, waste and vent piping. The coupling is particularly adapted to ease of construction and yet furnishes the ability to join and seal pipe and fittings of a given nominal diameter over the full range of their tolerances with excellent rigidity.

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Birmingham, AL, United States of America

Robert M Graham