Plastic article or earthenware shaping or treating: apparatus – Female mold and cooperating stock smoothing means or excess...
Patent
1975-07-11
1977-08-23
Spicer, Jr., Robert L.
Plastic article or earthenware shaping or treating: apparatus
Female mold and cooperating stock smoothing means or excess...
425361, 425412, B29C 300
Patent
active
040437248
ABSTRACT:
A device is disclosed for forming blanks from pulverulent porcelain mater which blanks have a foot piece and sloping sides. The device has an upper mould which acts against a lower mould, the upper face of which lower mould is formed by a distendable, elastic membrane closing the upper end of a liquid filled chamber. Within the chamber, a central member provides resilient support for the center of the membrane. The parts are so arranged that upon closing of the mould portions a layer of pulverulent porcelain composition is gradually shaped and compressed between the upper mould and the membrane into a concave article blank including a foot piece, and where necessary a relief design, which blank is of uniform thickness and density.
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Dorst-Keramikaschinen-Bau Otto Dorst U. Dipl. -Ing. Walter Schle
Spicer, Jr. Robert L.
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