An improved arrangement is provided for relatively reciprocating the ram and blank holder components of a horizontal can blank forming machine. The machine includes a reciprocable slide carrying the ram, and a reciprocable blank holder frame on which the blank holder is mounted. The slide and blank holder frame are driven by a common crankshaft through corresponding crank arms angularly related circumferentially of the crankshaft axis to impart the desired motion characteristics to the slide and blank holder frame upon rotation of the crankshaft. The blank holder frame includes a vertical plate member defining the driven end of the blank holder frame, and horizontal rods interconnect the vertical plate with a frame plate at the opposite end of the blank holder frame and on which the blank holder is mounted. The axes of the crankshaft, blank holder, blank holder frame rods and ram are coplanar with one another and with the axes between the crank arms and the blank holder frame and slide.
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