Abstract: A cleaning device provided on a rotary printing machine for cleaning the outer cylindrical surfaces of cylinders includes a pressing-on bar for pressing a cleaning cloth on a respective outer cylindrical surface, adjusting elements for engaging the pressing-on bar, and an elastic profile rail to guide and press a cleaning cloth onto an outer cylindrical surface over the entire cylinder width. The elastic profile rail receives a plurality of forces from spring elements. The elastic profile rail and the spring elements allow a uniform cleaning of the outer cylindrical surface despite the presence of uneven or rough portions of the outer cylindrical surface that might be encountered by the cleaning device during cleaning.

Abstract: Pull lays on a feed table of a sheet-fed rotary printing machine are adjusted by a pulling device for laterally aligning sheets thereon. A spindle, which extends transversely to the travel direction, displaces the pull lays for adjusting to a sheet format to be processed. The spindle engages indirectly at a housing of the side lays which is provided with bearing and guide elements. The pull lays are thereby subject to an energy storing device which supports them in a guide transversely to the feed table.

Abstract: A double gear wheel of a turning device on printing presses comprises an adjustment gear wheel (4). On the adjustment gear wheel a conical seat (7) is formed, which conical seat (7) is engaged in a conical recess (9) formed on the corresponding stationary gear wheel (2), when the two gear wheels (2, 4) are clamped to one another by means of a clamping body (5). The double gear wheel described above has a compact construction, is easy to manufacture with a high degree of precision, and without the requirement for any additional elements essentially guarantees a frictional engagement which reliably prevents the mutual rotation of the two gear wheels (2, 4) during operation of the printing press, even on printing presses which consist of a large number of printing mechanisms.

Abstract: Device for fastening a clamping bar for clamping a covering to a clamping shaft formed with a groove wherein the clamping bar engages, including a spring-loaded retainer disposed on the clamping shaft and engaging in the clamping bar, the device further including a locking element radially displaceable in the clamping shaft.

Abstract: A device for stretching the rear edge of a printing plate in the plate cylinder of a rotary printing press. An extension shaft is provided in a channel which extends in the longitudinal direction of the plate cylinder, whereby fastened to the extension shaft are stretching elements which interact with retaining elements and make possible a stretching of the printing plate. Adjustment means are provided on both sides of the extension shaft, which adjustment means are supported on the cylinder cheeks and make possible an extension of the printing plate in the axial direction. The device makes possible, in addition to the extension of the rear edge of the printing plate, a lateral offset by a small amount.

Abstract: A control device for a numbering and imprinting unit of a rotary printing press is taught. The unit has a numbering cylinder removably mounted in the printing press side frames and is engageable, via eccentric bearings, at an impression cylinder. The unit has an inking unit for inking printing elements disposed on the numbering cylinder. The inking unit is designed as a removable unit. The control device has a control shaft and switching elements for engaging and disengaging respectively the numbering cylinder, for switching numbering units, and for adjusting the respective paper thickness to be processed, with the individual switching operations on the numbering and imprinting unit being optimized and effected independently of the offset printing machine.

Abstract: A device for tensioning a printing plate on plate cylinders of rotary printing presses, the device including a tensioning arrangement disposed in a gap of the plate cylinder for accommodating the plate rear end. The tensioning arrangement also includes a shaft with tensioning elements mounted thereon, and clamping elements for clamping angular and non-angular plate ends, with spring-loaded upper grippers being fastened on the clamping elements for the clamping of non-angular plate ends of printing plates and printing foils.

Abstract: Method of performing operating steps in an adjustment of a printing press, wherein adjusting members preloaded in one direction of motion are displaceable, in chronologically at least partly successive or sequential operating steps, in a direction opposite to the one direction by adjusting cylinders upon which a pressure medium is actionable includes acting, via a first pressure medium system having a pressure limitation controllable in stages, upon a second pressure medium system to which a plurality of adjusting cylinders, at least some of which are preloaded with different forces, are connected; and device for practicing the method.

Abstract: In a printing unit of a printing press having a plate cylinder and a blanket cylinder, there is provided a combination including a press-on device having a press-on roller applicable against the plate cylinder and swivelable at a spaced distance therefrom about a swivel axis aligned parallel to respective axes of the cylinders, a finger-protection device and a blast air device for blowing air against one of the cylinders, the press-on bar having a longitudinal axis and having a plurality of rollers rotatably mounted thereon, and the blast-air device being formed of a hollow interior of the press-on bar for receiving blast air therein, and nozzle openings in the surface of the press-on bar for discharging blast air from the hollow interior thereof, the longitudinal axis of the press-on bar together with the plurality of rollers rotatably mounted on the press-on bar and the swivel axis being swivelable substantially on a plane passing through a nip between the plate cylinder and the blanket cylinder about the s

Abstract: A device for adjusting the oblique register in a clamping device for locking printing plates in an offset printing machine. A clamping bar which opens and closes a gap is oriented for insertion of the front or rear edge of a printing plate at the jacket face of the plate cylinder parallel to the cylinder axis. A centering bolt is secured to the clamping bar and it is oriented radially to the plate cylinder and it extends into the insertion gap. The centering belt has a profile which corresponds to the printing plate. The centering bolt is secured on the one outer region of the clamping device so that a stop being oriented in the circumferential direction of the plate cylinder is adjustably attached on the outer regions o the clamping device in the insertion gap. The position of the stop is adjusted with a device disposed on the plate clamping device.

Abstract: A combination is provided on a feeder table of a sheet-processing machine, which includes a front lay member cyclically swivelable about an axis, in accordance with a sheet-conveying cycle, and a leading-edge stop for effecting an alignment of paper sheets, the leading-edge stop being disposed on and swivelable with the front lay member out of an alignment position, into a rest position and back into the alignment position, the leading-edge stop including an adjustment device for adjustably fastening the leading-edge stop in a respective position thereof in a conveying and counter to a conveying direction, respectively, of the paper sheets with respect to the front lay member in the alignment position of the front lay member for engaging and disengaging the alignment of the paper sheets by the leading-edge stop.

Abstract: A device for clamping flexible printing plates on the plate cylinder of rotary printing presses can have tensioning bars provided in a recess of the plate cylinder, to which tensioning bars the ends of the printing plates can be fastened, and can also be provided with an apparatus for correcting the diagonal register of the plate cylinder by providing swivelling of the tensioning bars. The adjustment apparatus can be configured with relatively few joints and the adjustment can be done with as little play as possible and with only minimal influencing of the set values for the circumferential and lateral registers. The arrangement provides a configuration wherein at least one of the tensioning bars can be axially displaced during the swivelling of the tensioning bars in a circumferential direction within the plate cylinder.

Abstract: Method of performing worksteps in a cylinder of a printing press to which an operating medium is supplied includes energizing with the operating medium at least one actuator for performing the worksteps so that the one actuator acts against operating elements energized by spring force, associating with each of the worksteps a respective defined spring-force energization and a respective pressure stage of the operating medium overcoming the respective spring force, and performing the worksteps in a sequence corresponding to a sequence of association of the pressure stages with the worksteps, in stages towards higher pressures and towards lower pressures, respectively; and device for performing the method.

Abstract: A rotary leadthrough for feeding pressurizing medium to a rotatably mounted part includes a stator and a rotor rotatable relative thereto, the stator and the rotor being formed with at least one channel, respectively, sealing elements and sealing counter-elements respectively carried by one and the other of the stator and the rotor for cooperatively sealing the stator and the rotor therebetween and for coupling the respective channels formed in the stator and the rotor into at least one medium connection path through which pressurizing medium is feedable, the stator having a longitudinal axis, and the rotor having a rotational axis coinciding with the longitudinal axis of the stator, and a device for axially displacing the stator and the rotor relative to one another from a first position thereof wherein the sealing elements are in sealing engagement with the sealing counter-elements, to a second position thereof wherein the sealing elements and the sealing counter-elements are spaced from one another.

Abstract: This invention concerns a device for remote-controlled operation of clamping elements of a turning device, especially in cylinders that carry sheets of paper and on the side walls of rotary printing presses. The turning device has at least one turning drum, one storage drum and adjustable toothed segments. These components in turn comprise clamping elements by means of which a clamp connection is created and maintained between force transmitting elements that are adjustable relative to each other and between control elements by having an initial tension force act on them. Control elements (20, 24; 46, 48) on which a hydraulic medium can act are arranged on movable pressure bars (9, 32, 39) consisting of at least one part. These move a transmission element (13, 32a, 40, 45) such that the clamping effects generated by the force storage devices (12) are cancelled out.

Abstract: Device for receiving printing forms at one end thereof in a printing-unit cylinder of a rotary printing machine, wherein the printing-unit cylinder is a printing-form cylinder formed with a cylinder gap and having a shaft extending through the cylinder gap, includes a plurality of receptacle components respectively formed with pairs of mutually opposing clamping surfaces disposed on the shaft for gripping a printing form, at least one adjusting element for swiveling one of the surfaces of the respective pairs thereof formed on the receptacle components against a force of a tension spring acting in a tensioning direction, and the other of the surfaces of the respective pairs thereof formed on the receptacle components having a retaining element actuatable by the one adjusting element for swiveling the other of the surfaces against a force of another tension spring, the shaft being an expansion shaft, the receptacle components being individual gripper elements supported side by side on the expansion shaft in a

Abstract: A method and a device for automatically starting and stopping a sheet-turning operation during the transport of sheets through a printing press for facilitating changeover of transport drums between two printing units from single side or recto-printing mode to a perfector or recto-and-verso printing mode.

Abstract: Sheet-fed rotary printing press for making one-sided multi-color prints or recto-and-verso prints, having at least one multi-size, driven sheet-guiding cylinder disposed between impression cylinders of two printing units, devices adjustable to a sheet-length format, and gripper systems associated with the cylinders, includes at least two intermediate gears via which a drive of the cylinders is divertable, at least one of the intermediate gears being formed as a single-revolution double intermediate gear having an adjustable ring gear and a gearwheel.

Abstract: Device for fastening and changing the position of a cylinder dressing on a printing-unit cylinder formed with an axially parallel gap in a rotary printing press includes, within the gap, tensioning spindles connectible with respective leading and trailing edges of a cylinder dressing disposed on the outer cylindrical surface of the printing-unit cylinder for applying tension to the cylinder dressing, the tensioning spindles being formed with toothing, respective shafts formed with toothing meshing with the toothing on the respective tensioning spindles, a device operatively connected to at least one of the tensioning spindles for adjusting the position of the cylinder dressing on the printing-unit cylinder, an actuating drive mounted on an end face of the printing-unit cylinder and operatively connected with the tensioning spindles for moving the spindles so that the cylinder dressing is both subjected to tension in circumferential direction of the printing-unit cylinder simultaneously at the leading and trai

Abstract: A device for changing-over a gripper control on a gripper cylinder of a turning device in a sheet-fed rotary printing machine for first-form and perfector printing, including an adjusting gear and a fixed gear disposed coaxially with one another, the adjusting gear being adjustably movable so as to vary the angular position thereof relative to that of the fixed gear, and a clamping device for clamping the adjusting gear and the fixed gear frictionally together, comprising a control shaft axially displaceable in the gripper cylinder, the control shaft being rotatable and being coupled, via a first intermediate converting device, with the adjusting gear so that an adjustable movement of the adjusting gear is converted thereby into a rotary movement of the control shaft, a spring device for applying a reaction force to the control shaft in a clamping direction of the adjusting gear, an adjusting bridge carried by the gripper cylinder so as to be displaceable in axial direction thereof, an angle lever disposed in