Abstract: Assembly for stream feeding sheets overlappingly staggered relative to one another via a feed table to an aligning device and for delivering the sheets aligned by the aligning device to a sheet-processing machine, the assembly maintaining movement of the sheets in direction towards the sheet-processing machine during alignment of the sheets by the aligning device, includes an aligning cylinder disposed under the feed table for receiving a sheet to be aligned which is fed thereto via the feed table, at least two rows of front lays disposed symmetrically on and around the circumference of the aligning cylinder, as well as a respective device disposed adjacent the rows of front lays for aligning side edges of the sheet, and a gripping device for holding the sheet until other further-transferring conveying device take over the sheet in-register.

Abstract: Inking unit for an offset printing machine with a plate cylinder which includes an ink applicator roll with an elastic surface cooperatively engaging the plate cylinder for delivering ink to the plate cylinder, an ink feeding system and an inking cylinder cooperating with the ink feeding system for receiving ink therefrom and cooperatively engaging the ink applicator roll so as to feed the ink in a continuous film thereto, the ink applicator roll having a diameter approximately equal to the diameter of the plate cylinder and being located downstream from the inking cylinder in ink feed direction, the ink applicator roll being rotatable in a given direction, and means for transfering dampening medium to the ink applicator roll in the given rotary direction thereof at a location of the ink applicator roll downstream of the location at which the ink applicator roll is in engagement with the inking cylinder and upstream of the location at which the ink applicator roll is in engagement with the plate cylinder.

Abstract: Device for exchanging printing medium between zones offset with respect to one another in longitudinal direction of at least one roller in a printing unit of a rotary printing press, including at least one rotational body for exchanging and distributing the printing medium, the rotational body having a rotational axis out of parallel with the one roller of the printing unit and having an enveloping surface correspondingly out of parallel with the one roller and contacting the one roller at least indirectly at zones thereof offset from one another.

Abstract: Printing-press roller traversed by a temperature-regulating medium and having jacket-like partitions in the interior thereof surrounded by an outer circumferential wall, includes at least one heat-insulating element disposed in a middle region of the circumferential roller wall, the element forming an impediment to a transfer of heat on the surface of the circumferential roller wall in longitudinal direction thereof.

Abstract: A device for zone-wise metering of ink on an ink duct roller of an inking unit for printing presses, with an ink knife sealed against flowthrough of ink and subdivided zone-by-zone into adjacent elements having respective mutual joints therebetween, which includes respective actuators located in vicinity of the mutual joints between the ink knife elements, the actuators being operable upon the respective two neighboring ink knife elements on either side of the respective mutual joints for varying zone-by-zone the width of a gap located between the ink knife and the ink duct roller.

Abstract: Device for ink profile-dependent regulation of dampening solution in an offset printing unit having an inking-dampening unit which, over the width of a type form, supplies a dampening solution film of substantially uniform thickness to the plate cylinder and to the inking part of the inking-dampening unit, including a hydrophilic measuring roller in contact with one of a plurality of inking unit rollers; a measuring device disposed in vicinity of the measuring roller for determining extent of wetting of an outer cylindrical surface of the measuring roller section-by-section over the entire width of the measuring roller and for transmitting corresponding signals; means for varying the proportion of the dampening solution in the ink film section-by-section; and a control stage for converting the signals from the measuring device into adjustment commands and applying them to the proportion varying means for varying section-by-section the proportion of dampening solution in the ink film.

Abstract: A device for ink profile-dependent regulation of dampening medium in an offset printing unit having an inking-dampening unit which, over the width of a type forme, supplies a dampening medium film of substantially uniform thickness to a plate cylinder and to an inking part of the inking-dampening unit includes a hydrophilic measuring roller, measuring means adjacent the measuring roller for determining extent of wetting of an outer cylindrical surface of the measuring roller section-by-section over the width of the measuring roller and for transmitting corresponding signals, means for varying the proportion of dampening medium in the ink film section-by-section, control means for converting the signals from the measuring means into adjustment commands and applying them to the proportion varying means for varying the proportion of dampening solution in the ink film section, the hydrophilic measuring roller being in cooperative engagement with a rubber-covered ink roller, the control means being actuatable in a

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: Ink metering device in an ink duct for offset or letterpress printing machines having an ink duct roller with metering and support regions disposed adjacent one another in axial direction of the ink duct roller, the metering regions being formed of metering elements adjustable zonewise to varying ink gap spacings, and the support regions continuously contacting the ink duct roller at least indirectly, under spring biasing force, including a flexionally elastic support rail extending over the entire length of the ink duct roller, the support regions being rigid support ledges formed on the support strip, the metering elements being disposed between the support ledges, and adjusting means operatively associated with the metering elements for zonally varying the ink gap spacings for the respective metering elements.

Abstract: Monitoring device for densitometrically evaluating printed sheets with a printed print-monitoring strip includes holding means, a plurality of first densitometers for exclusively measuring full-tone density carried by the holding means at a selective spacing from one another so as to define respective gaps between the first densitometers, and a plurality of second densitometers for measuring at least one tone density value selected from a range of screen and full tone values, the second densitometers being receivable, respectively, in the gaps between the first densitometers and being connectible to a device for mathematically correlating the values measured by the second densitometers with quality-assessing parameters.

Abstract: Device for testing dampening liquid and ink equilibrium in offset printing units having a plurality of dampening liquid applicator rollers defining a dampening film flow path and a plurality of ink applicator rollers defining an ink film flow path, includes a solitary test roller disposable in at least one of the flow paths and having an outer casing surface of hydrophilic construction at least over a partial region thereof, and means for effecting contact between the solitary test roller and at least one roller of the respective pluralities of dampening liquid and ink applicator rollers so as to form a corresponding film thereon.

Abstract: Sheet transport drum assembly in a rotary printing press wherein a sheet being transported rests upon an air cushion formed by blowing air between the jacket of a rotatable transport drum and the sheet, including air nozzle means for producing the air cushion, and sealing strips disposed on the drum jacket for limiting the air cushion at a location of the drum jacket underlying the leading edge and the two lateral edges of the sheet.

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: Folding machine in web-fed rotary printing machines for longitudinally folding, for cross-cutting the paper web and for collecting separated copies on a collecting cylinder cooperating with a knife cylinder, the collecting cylinder having an odd number of puncture rows on the periphery thereof, and the knife cylinder having an even number of puncture rows on the periphery thereof for the longitudinally folded paper web, the improvement therein including means defining the puncture rows firmly built into the collecting cylinder, cutting devices formed alternatingly of a single knife and a double knife respectively located on the knife cylinder following successive section length thereon, said single knife being disposed at a location whereat it leads the respective puncture row cooperating therewith and a device for removing from the puncture rows trimmed strips separated from the copies by the double knife on both sides.

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.

Abstract: Drive for cylinders of an offset printing machine having a gear train constructed of spur gears disposed as drive gears on respective shafts of the cylinders, and including clamping devices for synchronizing rotation of the cylinders, the clamping devices being rotatable with the spur gears respectively associated therewith and having respective gear rims deformable more or less in accordance with an adjustment thereof, including a clamping plate respectively disposed coaxially to the spur gears, the spur gears being helically toothed, and at least two of the clamping devices mounted on the clamping plates, respectively, and acting in radial direction upon the gear rim of the spur gear respectively associated therewith.

Abstract: An offset printing machine having a cleaning device for a printing-unit cylinder with plate, blanket and impression cylinders, includes a washing device engaging with the blanket cylinder in operating position thereof, and means for engaging the blanket cylinder with at least the impression cylinder in operating position of the washing device.

Abstract: Device for clamping a blanket on the blanket cylinder of rotary printing machines having an outer cylindrical surface formed with a slot extending parallel to the axis of the cylinder and widening radially inwardly, the slot accommodating at the radially inwardly widened region thereof two rotatable clamping spindles for clamping the blanket, each of the clamping spindles being formed with a longitudinal groove for receiving respective ends of the blanket therein, the respective ends of the blanket having sheathing thereon, including at least one support rod disposed in the widened region of the slot between the outer cylindrical surface of the cylinder and the two clamping spindles, the support rod extending parallel to and being slightly spaced from the clamping spindles, the support rod, during clamping of the blanket, being in engagement with a part of the blanket adjacent the sheathing and forming an angle in the blanket part so as to force the sheathing fully into the respective longitudinal groove and

Abstract: Ink duct for offset or relief printing machines having an ink metering device adjustable with respect to a doctor roller for varying a gap therebetween, includes an ink metering device having adjusting elements for varyingly adjusting the gap zonewise, the adjusting elements being formed with respective bracing and metering regions disposed adjacent one another in axial direction of the doctor roller, the adjusting elements at the respective bracing region thereof being continuously spring-biased into at least indirect contact with the doctor roller and, at the respective metering region thereof, being adjustable to a varying spacing thereof from the doctor roller so that the respective spacing of the respective metering region from the doctor roller determines the ink gap in a respective zone.

Abstract: Sheet carrier device disposed so as to be axially and radially adjustable on a transfer drum in a multicolor rotary printing machine and having axially shiftable carriers extending in circumferential direction on the casing of the drum, sheet carrier elements being interchangeably mounted on the carriers and displaceable in circumferential direction of the drum, the sheet carrier elements having supporting edges whereon a sheet being carried is supported when the carrier elements are in operating position.