Clutch for a rotary sheet-printing machine

Zur einfachen und sicheren Verstellung einer Bogenübergabetrommel einer Bogenrotationsdruckmaschine zum Drucken unterschiedlicher Formate wird eine auf dem Prinzip des Druckölverbandes beruhende Kupplung in einem Räderzug zwischen zwei Druckwerken vorgeschlagen. A coupling for a sheet transfer drum in a sheet fed rotary printing machine facilitates phase or spacing adjustments between two printing couples. A toothed wheel is secured to a journal portion of a sheet transfer drum body. The toothed wheel carries a toothed ring on a support surface with the toothed ring being movable with respect to the toothed wheel through the use of a high pressure fluid injection interference fit. Movement of the toothed ring with respect to the toothed wheel by rotation of one of the printing couples with respect to the other effects a change in position of the sheet leading edge engaging gripper row carried by the sheet transfer drum periphery with respect to the sheet trailing edge engaging holding bar carried by the support segments connected to the toothed ring.