Abstract: The present invention includes an elongated housing having a bore extending therethrough with an inlet end at one end and an outlet nozzle at the other end. A removable cartridge is inserted within the bore and includes the valve assembly and the handle and operating rod for moving the valve assembly. The entire working valve assembly and operating rod can be removed as a unit for replacement of o-rings or other parts.

Abstract: An article handling apparatus includes a guide block which is supported on a base frame with freedom of movement in two dimensions. An article gripping attachment is mounted on the guide block which is further provided with a cam slot for defining the intended path of movement for the gripping attachment. A drive shaft, rotatably supported at a fixed position on the base frame, has a cam follower engaged within the cam slot and coacting drive means are provided for moving the guide block relative to the cam follower. A coacting rack and pinion gear on the guide block and drive shaft respectively, are operative for moving the guide block along the path defined by the cam slot. The drive shaft may be rotated by a combination slider crank mechanism and rack and pinion arrangement for producing a harmonic motion of the gripping attachment.