Plastic article or earthenware shaping or treating: apparatus – Female mold and means to feed measured charge of fluent... – Means to move feed means to female mold
Patent
1978-12-13
1981-05-05
Parrish, John
Plastic article or earthenware shaping or treating: apparatus
Female mold and means to feed measured charge of fluent...
Means to move feed means to female mold
425352, 425424, 425435, 425452, B30B 928
Patent
active
042656095
ABSTRACT:
A method and apparatus for molding concrete block products is disclosed, in which a surface layer and a back layer are formed by supplying different concrete aggregates into a molding box, pressure and vibration are applied to the concrete aggregates in the molding box to mold a concrete block, the molding box is then turned upside-down for curing and the concrete block is ejected from a lower portion of the inverted molding box.
REFERENCES:
patent: 1987721 (1935-01-01), Straub
patent: 3811808 (1974-05-01), Platt
patent: 4063866 (1977-12-01), Lurbiecki
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