Abstract: A device for handling a sheet pile in a printing press includes a pile chamber with at least one opening of a size at least through which the pile is passable horizontally, a lifting platform in the pile chamber for receiving the sheet pile thereon, a lift drive for vertically adjusting the platform, and a screen assigned to the opening and adjustable between a first operating condition wherein the screen covers the opening, and a second operating condition wherein the opening is free from being covered by the screen. A conveyor section horizontally shifts the pile through the opening when the lifting platform is at a transfer level. The conveyor section includes a first conveyor subsection within the pile chamber and at least a second conveyor subsection outside and adjoining the pile chamber. The first and second subsections have alternating states of occupancy during operation. They are alternately occupied by a pile and not occupied by a pile.

Abstract: A printing device for the printing of individual, flat print substrates, such as compact discs, in a multi-color print, uses a plurality of print units. These print units are arranged in a common frame and each has a print position. The distance between print positions in adjacent print units is less than the lengths or diameter of one of the print substrates.

Abstract: A horizontal slide mechanism for removably replacing an inking unit in a rotary offset printing press of the type having a plate cylinder, a blanket cylinder and an impression cylinder having parallel rotational axes. The horizontal slide mechanism includes a first guide track and first slide plate mounted to the printing press and to said inking unit adjacent and parallel to the plate, blanket and impression cylinders for guided horizontal movement parallel to the plate, blanket and impression cylinder of the printing press. A second guide track and second slide plate pair are mounted between the printing press and the inking unit at another location parallel to and spaced apart a predeteremined transverse distance from the first guide track and slide plate pair for guided movement and support of the inking unit. A latching mechanism is provided by which the inking unit is releasably held in a first operating position corresponding to inking engagement.

Abstract: A rotary printing press built on a frame structure in which printing units, normally mounted on a floor foundation, are instead suspended from the frame structure to minimize clutter in the vicinity of the printing press and simplify the operation of changing the printing units when a printing run is complete.

Abstract: The plural cylinders comprising a printing unit in a rotary printing press, are mounted for synchronous rotation within a single frame structure, aligned under the impression cylinder, such that the frame structure including the cylinders is removably securable to the printing press as a cassette unit. Each cylinder is rotatably journalled within a bearing housing, which is displaceable on a vertical bearing rail. A hydraulic cylinder is disposed under the lowermost bearing housing for lifting and lowering the cylinders, to selectively raise them into engagement or lower them out of engagement.

Abstract: This invention pertains to a novel wagon which holds a stack of printing paper. More particularly, this invention relates to a paper stack holding truck (pre-loader) which assists in efficiently loading paper into a offset printing press, and thereby reduces press down time. A paper pre-loader for an offset printing press compressing: (a) a wagon frame; (b) at least three wheels rotatably mounted to the underside of the wagon frame; (c) a pair of adjustable width paper guides extending vertically upwardly from the wagon frame; and (d) a paper board for enabling a stack of paper to be readily moved from the top of the wagon frame onto a paper deck of an offset printing press.

Abstract: A method of driving the impression cylinder receiving carriages into the printing elements of a rotary printing machine whilst executing a simultaneous displacement of all the impression cylinder receiving carriages provided in the printing elements and of all the impression cylinder receiving carriages arranged in a waiting position in front of the printing elements, the displacement movement taking place in a first direction of advance and, for the subsequent driving-in of the impression cylinder receiving carriages, the latter being displaced simultaneously and together with the carriages located in the printing elements in the opposite direction.

Abstract: An improved, multiple-station convertible web-fed printing press is provided wherein respective press stations include permanent modules with replaceable, differently configured inserts. The station modules each include a pair of eccentrically mounted, insert-engaging rails which are pivoted for accurate placement of a press insert within the module; final insert lockup is provided by an eccentric hook assembly which generates several thousand pounds of locking force, in order to secure the insert against misalignment and subsequent insert shifting. Insert replacement operations are facilitated by means of a mobile cart including insert-supporting rails alignable with the module rails. Temporary interconnection of the cart and module rails is afforded by means of endmost connection hooks and yokes on the cart rails, which mate the module sidewall and the corresponding reduced diameter segments provided in the module rails.

Abstract: The trolley comprises a movable frame (2) carrying two separate print assemblies comprising cylinder (5-5a), doctor (6-6a) and ink rail (7-7a), and is capable of traversing horizontally at right angles to the print station of a rotary machine; the frame can be locked into two distinct positions, each of which has one of the two print assemblies correctly aligned with the impression cylinder and the rotary drive shaft, while the other stands off the machine and is freely accessible for servicing purposes. The trolley also has its own on-board drive system capable of setting the cylinder of the spare print assembly in rotation on the frame, independently of the other cylinder, which continues occupying and operating in the print station, so that adjustments can be made in readiness for the next run without stopping the machine.

Abstract: To permit access to accessory apparatus, such as inkers or dampers, or parts thereof, through an opening in the side wall of the printing machine which is so small, for reasons of printing machine stability, that normal access thereto is impaired, at least part of the accessory apparatus is located on a slide carriage (27) which is supported similar to a suspension slide on a carriage support rail (28). The carriage support rail (28) is secured to one side wall with a pivot hinge, so that it can be pivoted laterally, horizontally, to remove the part of the accessory apparatus by sliding it outwardly on the slide carriage. A holder extension (39) slidable on the support (38) is secured to the other side wall (1) of the printing machine supports the carriage support rail and provides an end stop for the accessory apparatus when the carriage support rail is swung outwardly.

Abstract: This invention relates to a colorhead printer mounting apparatus operable to be secured to a printing press and connectable to a colorhead printing assembly usable with the printing press. The colorhead printer mounting apparatus includes a main support jack assembly secured by an anchor bracket assembly to the printing press and having a colorhead support assembly mounted thereon which is operable to support the colorhead printing assembly thereon. The colorhead support assembly includes a mounting bar assembly secured to the colorhead printing assembly and having self-centering means for releasable connection to the colorhead printing assembly operable for raising, lowering, and pivotally moving to a non-use position for repair and maintenance thereon.

Abstract: A rotary printing machine body is provided with a U-shaped longitudinal portion for mounting an interchangeable drum unit. A pair of left and right interchangeable drum unit moving devices are mounted on the left and right printing machine body frames and adapted to move an interchangeable drum unit resting on a carriage into the mounting portion formed in the printing machine body and to move an interchangeable drum unit from the mounting portion onto the carriage. A pair of left and right fixing devices are also provided for fixing the interchangeable drum unit in the mounting portion to the printing machine body.

Abstract: To guarantee an exact engagement of toothed flanks in the driving gear train of a multi-color sheet-fed rotary printing machine, the gears in the train pertaining to an intermediate printing unit of the machine are power supplied from a driving member which transmit a three-fold power portion in comparison to uniform power portions transmitted by driving elements assigned to the remaining printing units.