A cam-driven apparatus (20) for providing linear translation as well as rotary movement to a support member (84) comprises a gripping mechanism (86), a housing (22), a motor-driven input shaft (30) carrying two drive cams (38), a follower wheel assembly (54) rotatably journaled on said housing (22) and drivably oscillated by one of the drive cams (38), a main guide shaft (78) and a secondary guide shaft (80) slidably received within the follower wheel (56) the support member (84) mounted atop the guide shafts (78,80), a connector plate (112) joining the lower ends of the guide shafts (78,80) and a follower wheel lift shaft assembly (94) drivably oscillated by the other of the drive cams. The oscillated lift shaft assembly (94) is operatively connected to the connector plate (112) and guide shafts (78,80) by a toggle linkage assembly (110), which assembly permits simultaneous rotational and linear oscillation of the guide shafts (78,80).
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