Abstract: In a straight side press having a bed, a reciprocal slide, a power drive for the slide and apparatus for feeding a stock strip onto the dies, and a conventional die set, the improvement of modifying the press to function as a transfer press by replacing the conventional die set with a transfer unit. The unit includes a plurality of longitudinally spaced sequential dies upon a lower die shoe having a sub-plate secured to the bed to define a series of stations. A plurality of corresponding spaced sequential punches are mounted upon an upper die shoe and secured to the slide. A pair of slide bars are reciprocally mounted upon the lower die shoe outwardly of the dies mounting pairs of opposed workpiece gripping fingers adapted for engagement with the respective workpieces at each station. The transfer unit includes a slide bar translator mounted upon the sub-plate and has a reciprocal end plate connected to the slide bars for intermittently transferring the workpieces from station to station.

Abstract: In a straight side press having a bed, a reciprocal slide, a power drive for the slide and apparatus for feeding a stock strip into the dies, the improvement of modifying the press to function as a transfer press by replacing the conventional die set with a plurality of longitudinally spaced sequential dies upon a die shoe secured to the bed to define a series of stations. A plurality of corresponding sequential punches are mounted upon a die shoe secured to the slide, and a pair of slide bars are reciprocally mounted upon the bed outwardly of the dies mounting pairs of opposed workpiece gripping fingers adapted for engagement with the respective workpieces at each station. A slide bar translator is mounted upon a sub-plate and has a reciprocal end plate connected to the slide bars for transferring the workpieces from station to station. The translator is adapted for alternately moving the slide bars towards and away from each other.

Abstract: A vacuum motor includes a cylindrical housing with a mount plate at one end and an end wall at its other end terminating in a guide tube. A stem, adapted for connection to an intermittently actuated vacuum source projects into and is secured to the mount plate and is adapted for securing to a support. A cylinder is nested within the housing open at one end and at its other end is axially recessed to define with the mount plate a first vacuum chamber communicating with the stem bore. A hollow reciprocal piston open at one end is sealed within the cylinder a and terminates in a tubular piston rod which projects outwardly of the guide tube adapted for connection to a load to be moved a predetermined distance. The interior of the piston defines with the cylinder a power air chamber communicating with the piston rod and atmosphere. The piston defines with the housing end wall a second vacuum chamber which is in communication with the first vacuum chamber.