Patent ID: 7422553

Claim:
A cylinder of a folding apparatus comprising: a cylinder body including a cylinder body interior and a cylinder body surface and being rotatable in a direction of rotation about a cylinder body axis of rotation; at least one gripper supported by said cylinder body for movement between at least a lowered position within said cylinder body interior, an extended position and a clamping position; a counterthrust element located on said cylinder surface and adapted to cut flat material to be grasped by said at least one gripper, said counterthrust element being assigned to said gripper, said gripper being located before, in a direction of rotation of said cylinder body, said counterthrust element; a gripper tip adapted to press the flat material against said counterthrust element in said clamping position; a first shaft in said cylinder body, said gripper being pivoted about said first shaft for movement between said lowered position and said extended position; a first arm pivotable about said first shaft; a first pivot shaft supported by said first arm, said first pivot shaft being movable radially in said cylinder body; and a second shaft having a second shaft axis of rotation different from said cylinder body axis of rotation, said gripper being moved with respect to said second shaft in a circumferential direction of said cylinder body.