Abstract: Device for transmitting tensioning forces to a printing-unit cylinder carrying at least one areal flexible packing thereon, the cylinder being formed with an opening extending therethrough in axial direction thereof, and at least one of a leading and trailing edge of the one packing being received in the opening, includes a tensioning shaft disposed in the opening and engageable with the respective one edge of the packing for applying a tensioning force thereto, the tensioning shaft being formed with a journal pin, and an exchangeable adjusting wheel having a bore formed therein wherein at least part of the journal pin of the tensioning shaft is received, the bore having a defining peripheral surface carrying a plurality of supporting bodies thereon, the journal pin of the tensioning shaft being formed at an outer peripheral surface thereof with a plurality of corresponding recesses wherein the supporting bodies, respectively, engage.

Abstract: An inking unit for rotary printing machines comprising driven distributor rollers, inking-unit rollers and plate-inking rollers which are mounted so as to be disengageable from a plate cylinder such that, when adjusting an inking-unit roller, the contact pressure is maintained at a constant level and the adjustment itself can be largely remote-controlled.

Abstract: A device for receiving therein a prestressed roller journal, the device being provided in a printing unit of a rotary printing press, includes a screw-in element having a prestressed pressure element movably guided therein for adjusting to a contact width of a roller, a bearing member carrying the screw-in element and being adjustable between a vertical installation position thereof and at least one installation position deviating from the vertical installation position, the bearing member being formed with a pair of guide cams disposed opposite one another for automatically orienting the roller in the vertical installation position, one of the guide cams of the pair thereof being disposed so as to carry the weight of the roller in the at least one installation position of the bearing member deviating from the vertical installation position.

Abstract: A method of washing a printing press with a washing apparatus, wherein the washing apparatus is configured to provide washing solution to several of the rollers and cylinders of the printing press for washing the rollers and cylinders. Effective washing of various rollers and cylinders of the printing press, and especially the transfer of washing solution to various rollers and cylinders, including the rollers and cylinders of the damping unit, is facilitated while the transfer of washing solution to the damping medium reservoir is generally avoided.

Abstract: Device for safeguarding a hazardous location of a printing unit in a rotary printing press, wherein the hazardous location is at a cylinder region of the printing unit containing clamping elements, cylinder bearers and pressure-adjusting rods, includes multi-partite protective coverings having an areal or sheetlike form, respective swivel shafts vertically and horizontally disposed in the printing unit and carrying the protective coverings, respectively, the respective protective coverings being swivellable about the vertical and horizontal swivel shafts between an inwardly swung or closed position protective of the hazardous location, and an outwardly swung or open position affording access to the hazardous location for performing adjustment and maintenance operations thereat, a finger guard carried by the respective protective covering swivellable about the horizontal swivel shaft, and means for remotely controlling the swivelling of at least one of the protective coverings about the respective swivel shaft

Abstract: A device for coupling and uncoupling inking unit and dampening unit drives in rotary printing machines is actuated with an operator-accessible control knob mounted at a printing unit. A sensor assembly detects a safety rest or safety release movement of the control knob preceeding a switching movement of the control knob. A control shaft is connected to and rotatable by the control knob. A cam member with a cam surface is mounted on the control shaft. The cam surface is followed by sensing devices which continuously sense the cam surface. A traverser bushing is axially movably mounted in the printing unit. Transmission members are connected between the control knob and the traverser bushing for converting a switching movement of the control knob to an axial movement of the traverser bushing. The axial movement of the traverser bushing is between defined positions which cause the inking and/or dampening unit drives to be engaged and disengaged.

Abstract: The invention relates to a print unit cylinder for rotary presses, the cylinder having a narrow non-printing gap for accommodating the rubber blanket or pressplate ends, the gap running parallel to the axis of the cylinder, and also an elastomeric filler element for bridging the non-printing gap opening to thus prevent a sudden change of the roll characteristic when two interacting cylinders roll over the cylinder gaps.

Abstract: Roller for distributing at least one of an ink and a wetting agent in a printing press. The roller has a generally uniform roughness of about fifteen micrometers to about twenty micrometers over its entire exterior surface.

Abstract: A distributor roller for use in a printing press which includes an axial shaft member, a casing member surrounding the axial shaft member and being rotatably and axially slidably mounted with respect thereto, an interior surface of the casing member having a cross-section which, when taken tranverse to the axial shaft member, is eccentrically disposed with respect thereto, an arrangement for rotating the casing member about the axial shaft member, an oscillating body member disposed within the casing member and mounted for pivotal movement in a direction transverse to the longitudinal axial shaft member, the oscillating body member having an engagement surface for engaging the eccentrically disposed interior surface of the casing member, thereby the oscillating body member is caused to undergo a reciprocating movement in the direction transverse to the axial shaft member upon rotation of the casing member thereabout, and conversion means for converting the reciprocating movement of the oscillating body member

Abstract: A film inking unit for a rotary printing machine includes a relatively slowly rotating ink fountain roller and a relatively faster film roller rotating the ink fountain and the film rollers being spaced from one another so as to form a gap therebetween, wherein before the inking unit rollers as seen in direction of rotation of the film roller, there is provided at least one additional intermediate roller, which takes ink from the film roller, and a doctor blade for completely squeegeeing the ink from the additional roller and returning the ink to the ink reservoir prior to transference of the ink film onto relatively fast-running inking unit rollers.

Abstract: In general, the invention features a mechanism for applying a wetting agent or ink in a printing press, the printing press including a plate cylinder, an ink reservoir and an ink transfer apparatus for transferring the ink from the ink reservoir to the plate cylinder, the ink transfer apparatus including at least a first applicator roller which receives ink from the ink reservoir, the first applicator roller being in contact with the plate cylinder, and a distributor roller, the mechanism including a second applicator roller, a wetting agent reservoir, a wetting agent transfer apparatus for transferring the wetting agent from the wetting agent reservoir to the second applicator roller, and a selective shifting apparatus for selectively shifting the second applicator roller between a first position wherein it contacts both the plate cylinder and the distributor roller and a second position wherein it contacts the plate cylinder but is not in contact with the distributor roller.

Abstract: Inking unit for a rotary printing machine having an ink duct, a relatively slowly rotating ink duct roller and following form and distributor rollers rotating at the same peripheral speed as that of a plate cylinder of the printing machine, includes an endless ink transfer belt located downstream from the ink duct roller in transfer direction of ink from the ink duct, the endless ink transfer belt extending laterally across the length of the ink duct roller and having one strand thereof engaging the outer cylindrical surface of the ink duct roller, the other strand of the endless ink transfer belt engaging the outer cylindrical surface of the next distributor roller disposed downstream from the endless ink transfer belt, and guide rollers engaging and guiding the endless ink transfer belt.

Abstract: An inking unit for printing machines wherein ink is fed in a metered fashion from an ink supply tank to inking rollers of the inking unit by which an ink film is applicable to a printing plate via a plurality of ink form rollers respectively in contact with a distributor roller and disengageable from a plate cylinder, the last of the plurality of form rollers, as viewed in rotational direction of the plate cylinder, being constructed so as to oscillate, including a roller shaft mounted so as to be fixed against rotation in bearings on the printing machine, the oscillating form roller having a casing with an outer cylindrical surface, the form roller casing being rotatably mounted on the roller shaft and being axially displaceable on the roller shaft for performing a stroke limited at both sides by respective pairs of bushings also mounted on the roller shaft, and including a respective compression spring disposed between the bushings of the respective pairs of bushings on each side of the oscillating form rol

Abstract: An ink duct assembly of a rotary printing machine having an ink duct formed with an ink duct roller, the improvement therein including an ink knife having a wiper edge and being divided into individually controllable zonewide tongues in vicinity of the wiper edge, and adjusting means for adjusting a gap width between the wiper edge and the ink duct roller, the tongues having slits therebetween which are very narrow compared to the width of the tongues, the tongues being positionable by the adjusting means starting from a uniform zero position, and the tongues being covered with an elastic covering formed of a thin, hard and elastic foil having a smooth surface, and having a part thereof overlapping the wiper edge and engaging tangentially with the ink duct roller, the elastic covering, at a forward region thereof, being bent at an angle towards the ink duct roller so as to wipe excessive ink emerging from the ink duct onto the wiper edge back onto an ink film on the ink duct roller.

Abstract: Ink duct assembly for offset or letterpress printing machines having an ink duct and a rotary duct roller defining an ink gap therebetween and an ink metering unit for adjusting the ink gap, respectively, zonewise in axial direction of the duct roller, includes an elastic foil, the ink metering unit being covered by the elastic foil and being engageable through the intermediary of the elastic foil with the duct roller, and means disposed in an upper region of the ink duct for retaining the foil against frictional force of the rotary duct roller and for displacing the elastic foil in rotary direction and opposite the rotary direction of the duct roller.

Abstract: Device for axially reciprocating distributor rollers in an inking unit of a printing machine having an eccentric drive operatively connected with a push rod and control levers, which are mounted through the intermediary of slide bearings on a lateral frame of the printing machine, for respectively reciprocating the distributor rollers, the control levers being coupled to one another by coupling members, including shaft journals for the respective distributor rollers whereon respective journal bearings are rotatably mounted, the journal bearings having respective pivot pins extending therefrom and carrying respective universal joints, the universal joints being mounted in the control levers respectively.

Abstract: In an inking unit for a printing press having an ink duct with an ink-duct roller revolvable at a given speed therein, a transfer roller in rolling contact with the ink-duct roller, the transfer roller having an outer cylindrical surface formed with a plurality of helical ridges thereon, and a distributor roller revolvable at press speed greater than the given speed of the ink-duct roller, the transfer roller being rollable on the distributor roller for transporting ink film from the ink-duct roller farther into the inking unit, the improvement there including mutually meshing gear means carried by the transfer roller and the distributor roller, the transfer roller being drivable by the distributor roller via the gear means, and means for applying contact pressure of such magnitude between the transfer roller and the distributor roller during rolling of the transfer roller on the distributor roller that there is continuous contact between the surface of the distributor roller and the surface of the transfer r

Abstract: Device for axially reciprocating an inking-unit roller of a rotary printing machine having a fixed shaft and a frictionally driven roller shell including a pair of rings formed with opposing circular roller tracks disposed within the inking-unit roller and repectively secured to the shaft and the roller shell, one of the rings being skewed in axial direction with respect to the other of the rings, and a ball rollably received in both of the roller tracks and actuatable for effecting a step-down in speed of the axial reciprocatory motion of the inking-unit roller.

Abstract: Ink duct for offset of letterpress printing machines with an ink metering unit formed of a plurality of zone-wide metering elements disposed closely adjacent one another and adjustable to zonally varying ink-gap thicknesses, and an ink duct roller forming part of the ink duct, including support and metering regions formed on the metering elements, the support regions being constantly in at least indirect contact under spring pressure with the ink duct roller, each of the metering regions of the respective metering elements extending over the entire respective zone width, the respective metering region, as viewed in rotary direction of the ink duct roller, being disposed downstream from and at such a spacing behind the support regions that ink located between the support and metering regions can spread axially and distribute uniformly over the entire zone width, respectively.

Abstract: Ink duct assembly for offset or letterpress printing machines having an ink duct and a duct roller defining an ink gap therebetween and an ink metering unit for adjusting the ink gap, respectively, zonewise in axial direction of the duct roller, including an elastic foil, the ink metering unit being engageable through the intermediary of the elastic foil with the duct roller, the elastic foil covering the ink metering unit and being removably fastened to the ink duct at an upper edge thereof and means for tangentially displacing the elastic foil relative to the duct roller to a position wherein a new and unworn part of the surface of the elastic foil engages with the duct roller.