Abstract: A printing group for a printing press includes a plate cylinder, a blanket cylinder operatively coupled to the plate cylinder, and a further cylinder operatively coupled to the blanket cylinder. The blanket cylinder includes two end faces, each of which has a conical bearer ring. The further cylinder also includes two end faces, each of which has a conical bearer ring. The conical bearer rings of the blanket cylinder roll onto the conical bearer rings of the further cylinder under pressure.

Abstract: The apparatus has a driven pair of feed rolls (10, 11) and a folding roll (23) which is urged against the lower feed roll (10). The roll pair (10, 11) transports the sheet into a guide element (35, 36) for guiding and arresting the front end of the sheet. The guide element (35, 36) can be another roll pair with a reversible drive (41). After the front end of the sheet has come to a stop, the sheet is transported into the feed nip (22) between the rolls (10, 23), then folded and discharged downwardly. For increasing the operating speed without damaging the sheets, the roll pair (10, 11) is initially accelerated after the sheet is captured, and subsequently decelerated before the front end of the sheet comes to a stop.

Abstract: Two parallel cylindrical rolls in a punching, stamping, printing, smoothing or like machine for running webs of paper or the like carry pairs of hardened bearing rings which have complementary conical surfaces with the conical surfaces of rings for one of the rolls tapering in one direction and with the conical surfaces of rings for the other roll tapering in the opposite direction but at the same angle. This ensures that the rings for one of the rolls are in linear contact with the rings for the other roll. One of the rolls is movable radially of the other roll to change the pressure upon the web which is running through the nip of the rolls, and one of the rolls is movable axially of the other roll to compensate for wear upon the conical surfaces of the bearing rings. All such adjustments can be carried out while the machine employing the rolls is in use.