Plastic and nonmetallic article shaping or treating: processes – Treatment of material by vibrating – jarring – or agitating... – By reciprocating or vibrating mold
Patent
1992-01-31
1993-09-28
Aftergut, Karen
Plastic and nonmetallic article shaping or treating: processes
Treatment of material by vibrating, jarring, or agitating...
By reciprocating or vibrating mold
264333, 425150, B28B 108, B28B 300
Patent
active
052484661
ABSTRACT:
Cast stone for architectural use is made by subjecting a mixture of aggregate and Portland cement in a mold to repeated dropping against an anvil, and thereafter applying a vertical pressure to the contents of the mold while applying repeated mechanical blows to a table on which the mold is situated. The process makes it possible to produce a high quality cast stone in 3-4 minutes as compared with the 20 minutes required using prior processes.
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"PVKL Machine" by International Molding Machine Co.
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