Rca Inc.

Frederick C Schaller

Charles B Carroll

Ernest A Beres

A preform molding apparatus includes a mold cup which has opposed top and bottom mold members and a carrier arm between the mold members. The top mold member has a concave mold recess in its bottom surface and a semi-cylindrical rim extending downwardly from the edge of the mold recess. The bottom mold member has a concave mold recess in its top surface and a mold material inlet opening into the bottom of the mold recess. The carrier arm has a semi-cylindrical opening therethrough at one edge thereof. Pneumatic cylinders have piston rods connected to the mold members and the carrier arm for moving the mold members toward and away from each other and the carrier arm transversely across and away from the mold members. The mold members and carrier arm are adapted to be moved to a collapsed mold position in which the bottom mold member fits within the rim of the top mold member and the top mold member is within the opening in the carrier arm so that the mold recesses form a mold cavity smaller in volume than that of the preform to be molded. The mold members are movable to a mold position where the carrier arm and top mold member rim form the outer wall of the mold cavity so that the mold cavity is of a volume corresponding to that of the preform being molded.

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Lincroft, NJ, United States of America

Frederick C Schaller