Patent ID: 8186644

Claim:
A mold assembly for use with an automated dry cast concrete machine comprising: a plurality of mold cavities, each mold cavity formed by a plurality of liner plates, wherein at least one liner plate of each mold cavity is moveable between an extended position and a retracted position relative to an interior of the mold cavity; a master bar in mechanical communication with the at least one moveable liner plate of each of the mold cavities, the master bar moveable in a first direction toward the interiors of each of the mold cavities and in a second direction, opposite the first direction, away from the interiors of each of the mold cavities; and an actuator configured to drive the master bar back and forth in the first and second directions so that movement of the master bar in the first and second directions respectively directs movement of the at least one moveable liner plate of each of the mold cavities between the extended and retracted positions.