Patent ID: 7004442

Claim:
A mold for producing shaped concrete bodies comprising a mold frame having a plurality of longitudinal and transverse frame members which are connectable at their ends to define said mold frame having four corners in order to retain a mold insert having one or more mold cavities therein, said mold insert being positionable upon a vibrating table, said transverse frame members each having an outer face directed outwardly of the mold frame, means on the outer faces of said transverse frame members for attaching to a molding machine such that said mold insert is subjected to vibrating forces perpendicular to the mold frame during the molding process, and means at said mold frame corners including interfitting form-fit portions on the ends of said longitudinal and transverse frame members for detachably connecting said longitudinal and transverse frame members together, each of said transverse frame members has a pair of end faces and there being on each end face a projection pin having a polygonal cross section, each longitudinal frame member having on its inner face a polygonal recess at each end of said inner face, said recess correspondingly shaped to receive closely said projection pin so as to avoid torsional movement of said pin within said recess, and a locking screw detachably connecting a said end face of said transverse frame member to the inner face of a said longitudinal frame member.