Apparatus for, and method of casting in, molds for the production of ceramic hollowware

Abstract From the Canadian patent

A rotatable carriage for supporting split-type plaster molds for molding ceramic hollowware is disclosed in which the, molds are retained between two frames rotatable to a succession of positions in which the molds are retained in place between the framework of one of said frames and a dual cell inflatable member on the inner face of the other of said frames. The first of said frames includes a retaining member engaging the outer surface of said mold to prevent said mold from slipping relative to said frames. A new casting method is disclosed in which the slip is poured from the filled molds in at least two steps with the rotatable frames being rotated to a different position for each of …