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A mold assembly has two mold half shells, corresponding mold half carriers, and a novel intermediate interconnecting member comprising a pair of ring shaped locating members. The locating members have an inner locating wall, preferably a stepped shoulder, that fits into a recessed slot in the outer

A mold assembly has two mold half shells, corresponding mold half carriers, and a novel intermediate interconnecting member comprising a pair of ring shaped locating members. The locating members have an inner locating wall, preferably a stepped shoulder, that fits into a recessed slot in the outer wall of the mold shells. The locating members have an outer wall that fits into a recessed slot in the inner wall of the mold half carriers. The inner and outer locating walls of the locating members are vertically positioned relative to each to determine the vertical registry of the mold shell to the mold carrier. By utilizing intermediate interconnecting members of differing relative vertical positioning of the inner and outer locating walls, universals mold shells and mold carriers may be used for containers having differing neck heights whereby the neck height adjustment is accommodated by changing the intermediate interconnecting member.

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1. A mold assembly comprising:two mold half shells having first inner walls defining a cavity whose shape corresponds to side walls of a container to be formed in the assembly, the mold half shells having a first outer wall; two mold half carriers each releasably supporting a corresponding one of th

1. A mold assembly comprising:two mold half shells having first inner walls defining a cavity whose shape corresponds to side walls of a container to be formed in the assembly, the mold half shells having a first outer wall; two mold half carriers each releasably supporting a corresponding one of the mold half shells, the two mold half carriers being moveable between an open position allowing access to the mold half shells and a closed position for formation of a container within the cavity, the mold half carriers having a second inner wall corresponding to the first outer wall of the mold half shells when the mold half carrier supports the mold half shell; and, an intermediate interconnecting member for securing in vertical registry each mold half shell with the corresponding mold half carrier, the intermediate interconnecting member comprising an outside connecting surface adapted to secure the intermediate interconnecting member to the second inner wall of the mold half carrier and comprising an inside connecting surface adapted to secure the intermediate interconnecting member to the first outer wall of the mold half shell, the inside and outside connecting surfaces of the intermediate interconnecting member being vertically spaced relative to each other to define vertical registry between the mold half shell and the corresponding mold half carrier.