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.
Type:
Grant
Filed:
May 4, 1977
Date of Patent:
June 19, 1979
Assignee:
Dorst-Keramikaschinen-Bau Otto Dorst U. Dipl.-Ing. Walter Schlegel
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.
Type:
Grant
Filed:
July 11, 1975
Date of Patent:
August 23, 1977
Assignee:
Dorst-Keramikaschinen-Bau Otto Dorst U. Dipl. -Ing. Walter Schlegel