Plate cam 1 rotates about fixed axis A. Follower 2 oscillates about fixed axis B and carries roller 8 which rolls along the contour of cam 1. Link 3 is connected by turning pairs C and D to follower 2 and to cam 4 which turns about fixed axis E. Spring 7 bears against collar a of link 3 and fixed lug b, and holds roller 8 in contact with cam 1. Cam 1 is keyed to the main shaft of the printing press and transmits motion to cam 4. When cam 4 turns, brake shoes 5 and 6 are spread to brake and stop the impression cylinder.
$3290$CmL,FD$