Abstract: In a transfer press having feed bars and a press drive, an improved feed bar driving apparatus has a vertical rod reciprocally movable in association with the press drive and having a threaded portion, a drive means to the vertical rod means for rotating the vertical rod means in opposite directions, a feed screw device connected to the threaded portion of the vertical rod for being rotated by the vertical rod in opposite directions by rotation and reciprocation of the vertical rod, a pair of feed bar receptacles slidably supporting the feed bars and connected to the feed screw device for being moved toward and away from each other when the feed screw device is rotated in respective opposite directions for moving the feed bars in a clamping and unclamping movement, a cam rotatable in assocation with the press drive, a lever mounted on a fulcrum and connected to the vertical rod and in contact with the cam for being pivoted around the fulcrum by the cam for moving the vertical rod through a stroke, and a strok

Abstract: Feed bar advance and return driving apparatus for a transfer press. An upper slider is reciprocally vertically movable in the press crown in synchronization with the operation of the press, and a pinion rotatably mounted on the upper slider is rotated alternatingly in opposite directions with the upward and downward vertical movement of the upper slider. A drive rack vertically slidably supported on the upper slider is connected to the pinion at a position on the pinion which is eccentric to the axis of rotation of the pinion and is reciprocally vertically driven by the rotation of the pinion. The lower end of the drive rack extends downwardly and engages a drive pinion for rotating the drive pinion alternatingly in opposite directions during the reciprocal vertical motion of the drive rack.