Manufacture of short pipes

Details Manufacture of short pipes Manufacture of short pipes

1977-05-09

1979-04-24

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Forming plural articles

249100, 249129, 264 71, 264278, 264333, 425262, 425427, B28B 110

Patent

active

041512464

ABSTRACT:
Pipes of short length are moulded in a vertical pipe-making machine by locating a series of rings in a circular mould to divide the length of the mould into several compartments, the compartments are filled with settable material, to form a pipe with the rings embedded in it, and the pipe is divided into short lengths by removing the rings. The rings are held in position by stops projected through the wall of the mould into the moulding space, which are withdrawn prior to demoulding. The rings and reinforcement cages are assembled on a jig that is withdrawn before the pipe is moulded.

REFERENCES:
patent: 1592673 (1926-07-01), Nichols
patent: 1678633 (1928-07-01), Burchartz
patent: 2729873 (1956-01-01), Ludwig

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