Device for automatically adjusting a fold in a folding apparatus of a rotary printing machine

In a folding apparatus of a rotary printing machine, the combination comprising at least one cylinder with adjustable folding blades and impaling pins mounted thereon, perforating rollers disposed upstream of said at least one cylinder as seen in a direction of travel of a web of printed product travelling through the folding apparatus, at least one further cylinder with folding jaws mounted thereon, and a folded-product guiding cylinder with gripper devices mounted thereon, said folding blades, said impaling pins, said folding jaws and said gripper devices being adjustably mounted in the respective cylinders adjacent and with respect to outer cylindrical surfaces thereof, a gear train for driving at least one of said cylinders, a device being integrated into said gear train and operatively connected to at least one of said cylinders for automatically adjusting the folding apparatus, and remotely controllable drive means for actuating said adjusting device for varying respective operating positions of said folding blades, said impaling pins, said folding jaws and said gripper elements relative to one another and relative to the respective outer cylindrical surfaces of the respective cylinders.