such as a revolving wheel with the driven member being pivotally mounted at a position adjacent the wheel perimeter for reciprocating sinusoidal movement the carriage assembly 52 is adapted to carry the gripper assembly 50 in three axis of movement namely laterally longitudinally and vertically the carriage assembly 52 comprises a carriage frame 80 mounted to the apparatus frame 16 the carriage frame includes a pair of spaced apart parallel bars 82 a and b which are fixedly mounted to the frame 16 along a longitudinal axis a carriage 84 engages the bars 82 and includes a pair of sleeves 85 for slideable receiving the bars to permit the carriage 84 to slide longitudinally along the bars 82 a reciprocating pneumatic cylinder 88 mounted at one end to the carriage 84 and at the opposing end to the apparatus frame 16 drives the carriage 84 within a longitudinal direction extending upwardly from the carriage 84 is a rectangular pillar 88 u2032 a corresponding rectangular sleeve 90 is slideably received on the pillar and is driven vertically relative to the support by means of a reciprocating pneumatic cylinder 92 mounted to the respective members mounted to a side of the sleeve 90 is a second horizontally oriented rectangular sleeve 94 the axis of which is in the lateral direction the second sleeve 94 slidingly receives a beam 96 one end of which in turn is mounted to the base of the gripper assembly 50 lateral reciprocating movement of the gripper assembly 50 relative to the carriage 52 is achieved by means of slidable movement of the beam 96 within the.