Method and apparatus for manufacturing articles of hydraulic sub

Details Method and apparatus for manufacturing articles of hydraulic sub Method and apparatus for manufacturing articles of hydraulic sub

1980-01-31

1982-06-29

Parrish, John

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

425225, 425546, 425547, B28B 124

Patent

active

043370209

ABSTRACT:
A plurality of moulds each including a side frame and a hollow bed overlying the side frame are vertically stacked with sealing members interposed between the beds and the side frames for hermetically sealing the moulds. While the pressure in the moulds is being reduced a hydraulic substance such as cement is poured into the moulds. The poured hydraulic substance is heat cured to produce solid articles releasable from the moulds. An empty mould is added to one side of the stack while a mould containing the cured substance is removed from the other side of the stack. Alternatively, the process can be carried out according to a batch system. The moulds may be packed with aggregate, fittings or means for interconnecting the articles.

REFERENCES:
patent: 1332457 (1920-03-01), Burkhardt
patent: 3728064 (1973-04-01), Conway
patent: 3859021 (1975-01-01), Kleiber
patent: 3875278 (1975-04-01), Brandt

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