Abstract: To provide double-infolded printed copy substrates for short copies, a collection and assembly apparatus assembles copy of a first type, for example representative of an advertisement for ladies' fashions, with folded copy of a second type, for example representative of men's fashions. The apparatus forms a first cross fold in a first transverse folding stage (5, 7), typically a folding blade-folding cylinder unit, and forms a longitudinal fold by a longitudinal folding stage (13, 14), typically a folding blade (14) pushing printed copy between gripping rollers (13).

Abstract: A resilient sheet gripper for a sheet-fed rotary printing press having a gripper finger resiliently connected to a clamping member secured to a gripper shaft is provided including prestressed spring strips for connecting the gripper finger to the clamping member with each spring strip having articulation points disposed along a line passing substantially through the axis of the gripper shaft.

Abstract: The dual former (1, 2) apparatus includes a central housing and support (7) within which is retained a central common drive train (8). Located symmetrically with respect to a center line (21) through the housing and support (7) are respective transport roller units (9-12), cutting cylinder units (13, 14) and distribution apparatus units (15, 16; 27, 28), all driven from the common drive train (8). Some (9, 10) of the units may be cantilevered from the central housing and support (7), others (11, 12, 13, 14) have their remote ends journalled in bearing plates (17, 18) secured to the central housing structure (7) while still others (15, 16, 27, 28) are journalled in bearing plates secured on a base (6) which can also support the central housing structure, for example by being a metal element to which the central housing structure is welded. Delivery of folded, cut and separated printed subject goods is, preferably, laterally of the central housing structure.

Abstract: A resilient sheet gripper for a sheet-fed rotary printing press having a gripper shaft to which is secured a pivoting clamping member in resilient relationship with a pivoted gripper finger having adjustable biasing provided by compression spring means, is provided including an adjusting screw mounted in a stop strip, an abutment for contacting the screw mounted for movement around the gripper shaft, a guide pin fixed to the abutment and disposed in a biased conical sleeve in the gripper finger so that the finger can move perpendicular to a gripper support upon closure of the gripper finger.

Abstract: A resilient sheet gripper for a sheet-fed rotary printing press having a clamping member secured to a gripper shaft and a pivoting gripper finger resiliently connected to the clamping member by an adjustable compression spring is provided, including eccentric bushings mounted on the gripper shaft, the gripper finger being journaled thereon, so as to impart a positive gripper closing movement substantially perpendicular to a gripper support.

Abstract: A resilient sheet gripper for a sheet-fed rotary printing press having a gripper shaft and a gripper finger disposed in a recess of a cylinder of the printing press and including an asymmetrical four-pivot mechanism having the gripper finger as one of its links for governing the motion of the gripper finger and ensuring perpendicular closing of the tip thereof with respect to a sheet engaged on a gripper support at the edge of the recess.

Abstract: An operating head (24) carrying a hammering element (28) is introduced into the interior of the workpiece at a position where the workpiece, as measured by a measuring instrument (49,50) shows maximum deviation from the axis of rotation of the rotation symmetrical body. The hammering element is controlled to hammer against the inside at a rate which depends on the distance of deflection and/or the position thereof, during rotation, or longitudinal movement of the workpiece with respect to the operating head, for example by controlling a potentiometer (19) by an eccentric control disk (16) which has its maximum eccentric deflection of position in line with the maximum eccentricity, or deflection of the workpiece (7) from the axis of rotation. The apparatus can also be used to remove dents and the like, by hammering against the dent and longitudinally shifting the workpiece with respect to the hammering element.

Abstract: An inking roller for an offset printing machine, through the interior of which a temperature-control medium flows. The roller is formed of aluminum in a barrel shape with journals mounted at both ends. The cross-sections of the plurality of ducts formed in the wall of the barrel result in an optimally uniform surface temperature for the inking roller. On one side of the inking roller the ducts have openings so that the flow and return alternate inside the barrel. The opposite ends of the ducts communicate with openings which establish the counter flow of fluid through the barrel.

Abstract: The amount of travel and the phase of axial reciprocation for sets of distributing rollers provided on each of at least two inking units of a rotary printing unit are independently adjustable from a central location. For each of the inking units, one eccentric drive adjustable in reciprocating phase and in the stroke or amount of travel is connected to the end portion of an impression cylinder twice the size of associated plate cylinders so that the axial reciprocating movements of the distributing rollers are derived in synchronism with the rotation of the impression cylinder and in a ratio of 1:2 to the rotation of the associated plate cylinders. In one embodiment, a single bolt clamps the two eccentric drives one on top of the other to the end portion of the impression cylinder. In another embodiment, the two eccentrics drives are concentrically arranged in ring-fashion to permit separate clamping and unclamping of each of the four independent adjustments of the amount of travel and phase of reciprocation.

Abstract: Liquid is moved axially along a liquid roller (1) by a transport roller (2) from end regions towards the center region by forming the transport roller (2) with two conical surface regions (4, 5) which, alternately, are tipped in engagement with the liquid roller (1) while the respectively engaged conical section (e.g. FIG. 1: 4) is axially moving towards the center region of the liquid roller (1).

Abstract: An inking unit disposed in the ink duct of a printing press includes dispensing elements for regulating the quantity of ink dispensed on the duct roller of the press and includes a plurality of blades disposed on linear adjusters for movement in the plane passing through the longitudinal axis B of the quantity-regulating dispensing elements and the line of contact between the dispensing edge thereof and the duct roller. Each blade is secured to a retaining pin on the adjuster by way of a securing aperture disposed perpendicularly to its bearing surface, and only minimal clearance, which can be very reduced in the direction of movement, is left between the pin and the securing aperture, so that when the ink gap closes, the blade of a dispensing element can automatically be aligned parallel by the dispensing edge bearing on the surface of the duct roller.

Abstract: To provide for controlled braking effort on a selected paper roll (5) from which a web (14) is applied to a utilization machine, and additionally for fast-stop or holding conditions, the roll is coupled to an operating disk brake (10) which receives braking pressure from a regulated pressure source. Additionally, rapid-stop brake calipers forming a rapid-stop brake (11) are applied to the disk, preferably having a higher braking friction coefficient, and controlled from the regulated pressure via a fluid disjunctive or OR-gate valve (42). A magnetic valve (36), controlled by a computer-controller (28), selectively switches the controlled fluid pressure through the OR-gate valve (42) only to the operating brake or to the fast-stop brake and, via a branch connection (46a), also to the operating brake.

Abstract: For the accurate register alignment of a blanket on a blanket or plate cylinder for selected-area, in-line varnishing in a rotary press, clamping devices are provided with registration means each comprising two axially spaced, radially directed register pins which are situated beneath the outer surface of the cylinder and cooperate in exact register with recesses provided in the associated ends of the blanket. The clamping device for the front blanket end is adapted to be fixed in a zero position by means of associated markings at the front blanket end and an associated marking on the blanket or plate cylinder. The two clamping devices together with the rotatable tensioning spindles are disposed to be axially displaceable in the plate cylinder by means of adjusting devices.

Abstract: A device for selectively controlling the manual or automatic operation of inking or damping rollers of a printing press wherein the torque which produces the adjusting movement is transmissible through a non-positive coupling and a spring-biased manually releasable and automatically engaging connecting element, characterized in that a first start-stop lever is connected to an input coupling member for the automatic starting and stopping of printing, an operating lever is connected to a handle for manual control of the starting and stopping of printing and a second start-stop lever is connected to an output coupling member and is operative to engage and disengage the rollers.

Abstract: An improved sheet gripper system disposed on the impression cylinder of a printing press having regular sheet grippers mounted on a gripper shaft on the impression cylinder with additional grippers provided in the spaces between the regular grippers, which spaces are intended for cooperating transfer grippers, the additional grippers being adapted to retract into a gripper channel and extend out into the gripper plane only in one zone of the movement of the impression cylinder in which the between-gripper spaces are freed of the cooperating transfer grippers so that the front edge of a sheet is held by both the regular grippers, as it passes through the printing zone, and the additional grippers and the tension to which the printing material is subjected is greatly reduced, and the registry and print quality are improved.

Abstract: A rotary offset printing press which can be operated either for prime and verso printing or for printing on one side only, with flying plate change in the latter case, is organized so that the common counterpressure roller used with either of the two pairs of printing rollers (plate roller and rubber cloth roller) is used only as a paper feed-out guide during prime and verso printing. The counterpressure cylinder can be shifted to let it assume its normal function in single-side printing. A small shift of the drive gearing makes it possible to use the counterpressure cylinder for one or the other pair of printing rollers selectively while a plate change is performed for the idle pair.

Abstract: A chain conveyor for the delivery device of printing presses has gripper systems (1) being carrier directly by the endless conveying chains (2). The gripper system (1) is embodied by a unitary aluminum basic member (6). A steel tube (9) is cast into the basic member (6) at its center of gravity and over its whole length and optimizes the flexural and torsional rigidity of the gripper system (1).

Abstract: A light-emitting diode is used both for receiving data from an operator to change the logic state of a device and for displaying the entered data back to the operator. Current is selectively applied to the diode to display the data, but on an alternate basis the photo-current produced in the light-emitting diode by surrounding illumination is sensed and the data are received by detecting the fall-off in the photo-current caused by the operator covering the light-emitting diode. This technique is advantageously employed for the input and display of ink slide settings for a rotary printing machine by using a light-emitting diode matrix or bar graph display subject to finger-tip control by the operator. The diode matrix is scanned by repetitively and sequentially inhibiting the lighting current to the individual light-emitting diodes so that they may be sequentially connected to a photo-current monitoring circuit via a multiplexer under control of a clock circuit.

Abstract: A sheet feed drum for transferring sheets in a rotary printing press wherein the drum other contour is provided with an ink-repellent coating and two circumferentially spaced front and rear drum edges defining a duct therebetween which accommodates a sheet gripper system. The ink-repellent coating supporting a netting-like fabric relatively loosely thereon prevents any smearing of a freshly printed underside of a sheet during sheet feed on the drum while the sheet is engaged by the gripper system. Starting at the front edge of the drum, the outer contour of the drum is constructed in the form of a continuously increasing signal merging into a fixed drum radius whereby the netting-like fabric is contactable by the freshly printed underside of the sheet on the sprial first substantially flatly behind the front edge of the drum and then in any subsequent angle of rotation of the drum without the sheet tangent ever being bent or creased.

Abstract: To compensate for oscillations and bending of a blanket cylinder, and particularly oscillatory behavior under specific operating speeds, underlays between the rubber blanket and the cylinder surface are provided which are of differential thickness, so that, at any given operating speed where the blanket cylinder tends to move away from an associated impression cylinder, the underlay is thickened to thereby maintain essentially uniform printing pressure against the printing substrate (5) under all conditions. The system is equally applicable for plate cylinder - blanket cylinder systems of uniform diameter, as well as for plate cylinder - blanket cylinders of different diameter, and, in the latter case, preferably utilize an underlay blanket which tapers uniformly from a thinner portion to a thicker portion beneath the printed subject matter transferred to the blanket cylinder upon the second revolution of the plate cylinder.