| 摘要 |
A sheet advancing cylinder in an offset printing machine, has a sheet gripping system arranged in its interior. The system includes a rocking member rigidly connected to a first gripper for moving the latter between two terminal positions in a slot formed in the jacket of the cylinder. The movement of the rocking member is such that in the first terminal position the first gripper is flush with the jacket periphery, in an intermediate position it is above the periphery and in the second terminal position it is below the periphery. |
