Plastic article or earthenware shaping or treating: apparatus – Means to create a vacuum or apply fluid pressure within a...
Patent
1977-01-03
1977-11-08
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Means to create a vacuum or apply fluid pressure within a...
425412, 425416, 425419, 425422, 425423, B30B 502, B30B 1100
Patent
active
040573834
ABSTRACT:
A hydraulic press for the shaping and pressing of hollow ceramic articles, comprising a bedplate fitted with a horizontal table, on which top a die is fitted, wherein the negative outer shape of the article to be shaped and pressed is reproduced in at least one cavity thereof, being a special pressing member, consisting of a bowl made of an elastically flexible and extensible material, and having at least partly, the negative inner shape of the article to be shaped and pressed, fitted within said cavity, coaxially thereto, and being the possibility given to have said bowl uniformly inflated by introducing a pressure fluid therein; means being also provided to have said die temporarily closed while the ceramic powder or paste, previously introduced therein, is pressed, and to have the duly shaped and pressed ceramic article ejected therefrom.
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