Abstract: The printing press includes a printing cylinder and an inking roll operatively positioned on a frame means and characterized by positioning arms engaging the inking roll for pivotal movement of such roll towards and away from the printing cylinder to operative and inoperative positions, respectively. Fluid actuating means operatively engages the positioning arms for moving the inking roll and an adjustment device is present to control the extent of movement of said inking roll. Further adjustment means are provided in the positioning arm engaging one end of the inking roll to aid in operatively positioning the inking roll parallel to the printing cylinder.

Abstract: In a printing press having a conventional plate cylinder and an impression cylinder operatively positioned on a frame with the impression cylinder having gripper fingers and a gripper finger positioning shaft, the improvement relating to a tumbler member secured to one end of the gripper finger shaft and having pin receiving recess means formed in such tumbler member. A pair of fluid-actuated independently controlled cylinders are provided at the end of the impression cylinder whereby when the cylinders are actuated the piston rods extend therefrom for engagement with the tumbler member to turn it and its associated shaft through an arc by rotation of the impression cylinder for controlling the operative and inoperative positioning of the gripper fingers on the gripper finger shaft.