Apparatus for advancing and returning feed bars for a transfer press

Feed bar advance and return driving apparatus having a press crown, said apparatus comprising:

• an upper slider reciprocally vertivcally movable in said press crown in synchronization with the operation of the press;
• a pinion rotatably mounted on said upper slider so as to rotate alternatingly in opposite directions with the upward and downward vertical movement of said upper slider;
• a drive rack vertically slidably supported on said upper slider and connected to said pinion at a position on said pinion which is eccectric to the axis of rotation of said pinion and for being reciprocally vertically driven by the rotation of said pinion, said drive rack having a lower end extending downwardly;
• a drive pinion rotatably mounted on said press and engaged by said lower end of said drive rack for being rotated by said drive rack alternatingly in opposite directions during the reciprocal vertical motion of said drive rack;
• a drive lever means connected to said drive pinion at a position eccentric to the axis of rotation of said drive pinion and pivotally mounted on said press;
• and
• a lower slider for supporting feed bars of said press and connected to said drive lever means and driven in advancing and returning directions by the swinging motion of said drive lever means during rotation of said drive pinion.