Abstract: A folder assembly for a sheet fed printing machine utilizes a collect cylinder that is capable of operating in collect or non-collect modes. A first cross-stitching cylinder and a second cross-stitching cylinder are placed adjacent the collect cylinder. A transfer and jaw cylinder receives cross-stitched signatures and forwards them to a delivery unit.

Abstract: In a folding apparatus with a collect cylinder (1) which can be switched from collect production to non-collect production, the holding elements and folding blades of which are connected with actuating elements, preferably embodied as scanner rollers (14, 15), which can be controlled by a respectively associated radial cam (12 or 13), the control area of which, preferably embodied as a control recess (16), can be selectively uncovered or covered by means of a cover device provided with cover cams (17) disposed on a drivable cam support (22) which is coaxial with the radial cam (12 or 13), a great variability in respect to feasible collect operations is attained in that the cover cams 17.1-17.8 of each cover device are received radially displaceable on the respectively associated cam support (22).