Abstract: A positioning device is disclosed comprising a jack screw having a stationary guide housing, an externally helically threaded shaft through the housing and a retainer threadably engaged onto the shaft, and a rotatable ratchet having a head mounted on a top portion of the shaft. The positioning device further comprises at least one fluid cylinder and a piston fitting inside a mating chamber in the cylinder, a piston rod extending from the piston and connected to the ratchet and means for reciprocally driving the piston in the chamber. Each stroke of the piston and attached piston rod displaces the ratchet arm rotating the ratchet head and the shaft connected thereto, thereby displacing the retainer along the shaft.

Abstract: Electrophoretic coating of small ware such as metal fasteners or rivets.

Abstract: An electrophoretic coating system for continuous application to coiled metal sheet stock is provided which permits high speed coating of both sides of sheet stock by passing the sheet through a coating station without contacting the sheet with rollers or changing the direction with rollers. The sheet stock is coated and supported simultaneously by jets of liquid coating material which pass through perforated electrodes.