HANDLING ROD ASSEMBLY FOR INVESTMENT CASTING MOLD

摘要

A handling rod assembly comprises a rod having a connecting lug detachably mounted at its lower end to provide a drive connection between the rod assembly and a wax pattern pre-attached to the lug. The lug is detachably connected to the rod assembly by a bayonet connection and a pair of drive lugs which cooperate to prevent axial and rotational movement of the lug relative to the rod during spinning thereof. A coil spring is mounted on the rod to retain the drive lugs in driving engagement during such spinning.