Method and apparatus for manufacturing articles of hydraulic substances
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United States of America Patent
Stats
-
Nov 18, 1980
Issued Date -
N/A
app pub date -
Apr 25, 1978
filing date -
Mar 13, 1974
priority date (Note) -
Expired
status (Latency Note)
Importance
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 cememt 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.
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