Abstract: A driving device for printing machines, having a rod for oscillatingly moving a distributor roller in axial direction, includes a joint via which the rod is connected to the distributor roller, the joint permitting relative movement between the rod and the distributor roller so as to compensate for a displacement of the distributor roller perpendicularly to the axial direction of the distributor roller; and a printing machine having the driving device.

Abstract: A sheet-fed printing machine having a feed system for feeding sheets from a sheet feeder to the sheet-fed printing machine, and an imaging device for setting an image on a printing plate disposed on the plate cylinder are provided. The feed system includes at least one oscillatingly moving pregripper and a drive device for the feed system, the pregripper being uncoupled from the drive device.

Abstract: A cylinder for receiving a printing form, the cylinder being formed with a gap having gap edges, which projects into the interior of the cylinder, the gap extending in a direction of generatrices of the cylinder and serving for guiding ends of a printing form therethrough, includes device for tautening the printing form on a jacket surface of the cylinder, at least one of the gap edges having a curvature for attaining tensioning forces which are constant over at least approximately the entire width of the printing form.

Abstract: A cylinder for receiving a printing form, the cylinder being formed with a gap having gap edges, which projects into the interior of the cylinder, the gap extending in a direction of generatrices of the cylinder and serving for guiding ends of a printing form therethrough, includes device for tautening the printing form on a jacket surface of the cylinder, at least one of the gap edges having a curvature for attaining tensioning forces which are constant over at least By approximately the entire width of the printing form.

Abstract: A sheet-fed printing machine having a feed system for feeding sheets from a sheet feeder to the sheet-fed printing machine, and an imaging device for setting an image on a printing plate disposed on the plate cylinder are provided. The feed system includes at least one oscillatingly moving pregripper and a drive device for the feed system, the pregripper being uncoupled from the drive device.

Abstract: A method for laterally aligning a sheet in a sheet-processing machine, the sheet being retained by sheet grippers which are displaced axially on a common carriage with respect to an alignment cylinder, includes fixing the carriage when it reaches a predetermined desired position; and device for performing the method.

Abstract: A device to clean an outer cylindrical surface of a cylinder in a rotary printing press includes a cleaning cloth. The cleaning cloth can be pressed against the cylinder surface and is wound off a supply roller. To increase the effectiveness of the cleaning action, the cleaning cloth is wetted with a cleaning fluid upstream of the cylinder. The cleaning fluid can be fed via a feed tube to an absorbent wetting pad to uniformly distribute the cleaning fluid over the width of the cleaning cloth.

Abstract: A format-variable feedboard with a sheet-bearing surface for a rotary printing press includes support members disposed so as to form a format-dependent, substantially closed bearing surface for at least one sheet, the substantially closed bearing surface being disposed in a given bearing plane.

Abstract: Printing press having a device for centrally adjusting sheet-guiding elements located both on the drive and the control or operating sides of the printing press, the adjusting device including adjusting members for respectively driving the sheet-guiding elements in common, includes a drive member couplable selectively to the respective adjusting member on a respective one of the drive and the operating sides and to the adjusting members on both the drive and the operating sides.

Abstract: Auxiliary device for assisting in singling or separating sheets in an upper region of a sheet pile provided for single-sheet transport in a sheet transport direction within a sheet processing machine, a respective top sheet of the sheet pile being removable therefrom at a given time by at least one singling or separating device including at least one sheet trailing edge blasting or blowing device for feeding the sheet to the sheet processing machine, includes at least one feeler rod disposed at a location transverse to the sheet transport direction for measuring the height of the sheet pile, and respective fanning or loosening blowers disposed laterally of the sheet pile upstream of the feeler rod, as viewed in the sheet transport direction.

Abstract: Device for smear-free transport of sheets having fresh printing ink thereon on a revolvingly driven cylinder in a sheet-fed printing press includes air outlet openings for pressurized air provided on the circumference of the revolvingly driven cylinder in a sheet-bearing region thereof for bearing the sheet to be transported, and a fixed covering for closing the air outlet openings on the inside of the revolvingly driven cylinder prior to a takeover of the sheet to be transported by the revolvingly driven cylinder.

Abstract: Shifting device for a turning gear transmission having an automatic change of transmission ratio when a change in direction of a driving shaft occurs, including two driving gearwheels disposed coaxially with respect to the driving shaft, the driving gearwheels being of different diameters and, respectively, being disconnectable from the driving shaft, and a driven shaft having two driven gearwheels firmly connected thereto and being in continuous pair-wise engagement with the driving gearwheels, further includes a pawl holder rotatably mounted on the driving shaft, the driving gearwheels being rotatably mounted on the pawl holder, at least one pair of pawls held by the pawl holder, and a device for causing the pair of pawls, contingent upon the respective direction of rotation of the driving shaft, to effect an entrainment of one of the driving gearwheels in a different direction of rotation.