Abstract: To join a part having a threaded shaft protruding therefrom with a second part having a bore sized to receive the shaft and an intersecting cavity, a housing is provided which rotatably receives a nut. The nut has a circumferentially extending external gear surface and the housing has two nut actuator receptors communicating with its interior at this gear surface of the nut. The housing with nut is received within the cavity of the second part and the shaft of the first part is inserted into the bore in the second part till the shaft abuts the nut. A nut actuator inserted into one of the nut actuator receptors may then be rotated to thread the shaft into the nut and draw the two parts into abutment.

Abstract: An encapsulating block encasing a projecting workpiece, the block having a plurality of parallel slots in opposed side walls, the slots in each side wall extending alternately from opposed side edges of the side wall and terminating in a bearing face in the region of a plane passing through the workpiece and a frangible cross-sectional area of the block. Apparatus for use with the block consists of a pair of dies each having a plurality of parallel projecting tines receivable longitudinally in the slots to meet the bearing faces whereby on moving the dies together the block will fracture in the frangible cross-sectional area.

Abstract: In a pressure die casting apparatus, a die locking device in which a locking member is pivotably mounted on a frame and is movable into a position opposing a die part mount to have the force on the die part in the casting operation act through the locking member onto the frame substantially in the direction of that force. Another die locking device employs a main cylinder and piston assembly and an auxiliary cylinder and piston assembly with the chambers of the two cylinders interconnected whereby actuation of the auxiliary piston locks pressurized fluid in the main chamber. A sprue ejector mechanism has a plunger movable in a tubular piston rod, the end of the plunger being threaded to a collar and held to the piston rod and a cap threaded to the end of the piston rod, all for precise adjustment of the plunger in the die cavity.