Plate cam 1 rotates about fixed axis B. Follower 2 turns about fixed axis C and carries roller 10 which rolls along the contour of cam 1. Link 3 is connected by turning pairs D and E to follower 2 and to link 4 which reciprocates in fixed guide F. Vacuum cylinder 5 is connected by turning pair A to link 4 and contains piston 7 whose rod 11 is connected by turning pair N to suction cup 6. Link 9, rigidly attached to suction cup 6, is connected by turning pair K to link 8 which, in turn, is connected by turning pair M to link 4. When suction cups 6 are lowered to the sheets of paper, the vacuum pump is engaged and piston 7 travels to the left so that lug a on link 8 runs up against lug d on the cylinder. This causes link 8 to turn about axis M, turning link 9 and suction cup 6 about axis N and thereby bending over the edge of the sheet of paper.
$3274$CmL,FD$