Abstract: A metering blade for zonally metering a liquid film comprises a plate body having a working edge usable in an arrangement in which the setting member bears against the plate body and bridges a portion thereof against a rotating roller comprises a blade with a plurality of zonal setting portions of a material capable of being displaced by resilient flection adapted to be arranged adjacent a setting member which includes intermediate portions between a working edge and the opposite edge compensating for the setting wherein the setting portions are at least 3 mm in thickness and each intermediate portion includes a web part having a thickness which is not more than 1/5th the thickness of the setting portion and has a width amounting to at least five times the thickness of the web. The blade has a working edge with a reinforcement adjacent each web.

Abstract: Each individual, freely rotatable ring of a spiral-type ductor is mounted on an eccentric which is supported for rotation on a multi-eccentric shaft is angularly offset relative to its adjacent eccentric portion by at least an amount corresponding to the number of rings. The multi-eccentric shaft is connected to the drive of an inking system directly while the eccentric is connected thereto through a pinion, a pinion shaft, a gear and a separate sequential transmission with an integral speed ratio. In consequence, the center of the ring describes a curve which is flattened in the zone where the ring is in contact with an inking roller. The contact duration is thereby extended without varying the speed.

Abstract: In a photogravure rotary machine, each side of the form cylinder is mounted in a bearing housing, which is secured in a saddle portion of a carriage provided with a sleeve drive. The carriage is displaceably mounted on a guide secured on a machine wall and which carries a pivotally mounted retaining fork for the bearing housing. A locking mechanism is provided for locking the carriage in its operating positon, which is in an operative connection with a switching element that is electrically connected to a machine control. In the range of the extended position of the carriage is arranged an incline with a hinged return feed ratchet for lifting the form cylinder on the machine wall.

Abstract: An apparatus for cyclically decelerating and accelerating a ductor roller which has a journal which is mounted on a swing arm for rotation on the arm and is moved with the arm to selectively and alternatively engage the ductor roller with a first roller, such as a fountain roller and a second roller, such as a first roller of a printing press, is employed in inking and damping units of such presses. The apparatus includes a bearing head of the spring arm which provides a rotatable mounting for the journal of the ductor roller and the arrangement includes a planetary gear system connected to the journal and to a free wheel element with a controllable brake acting between the planetary gear system and the bearing head of the swing arm in an arrangement which permits the free wheel element to rotate after the braking system has been engaged to cause the winding or tensioning of a spring, such as a spiral spring, which is disposed between the free wheel element and the journal of the ductor roller.

Abstract: In a folding apparatus for a rotary printing press having a form cylinder with four or six etchings, with a folding cylinder having a plurality of spaced fastening devices on the circumference thereof and a collecting cylinder associated with the folding cylinder with folding blades, grippers or point group cassettes thereon, the improvement comprising, the fastening devices being divided into two groups, each with a number of fastening devices, with the ratio of the number of the fastening devices in each group being a mixed number. Each fastening device is provided with a cam follower and a cam wheel is positioned within the folding cylinder with cams thereon for selectively rendering the folding devices of one of the groups inoperative.

Abstract: Apparatus for forming a succession of mutually overlapping products, like folded printed products: a vane wheel having a plurality of axially spaced apart vane discs; a respective chain extending between two neighboring discs; a set of item grippers along each chain; each chain passes between a sprocket located between the discs and a sprocket spaced away therefrom; the sprocket between two discs is eccentric of the discs and is supported on an arm which pivots with respect to the axis of the discs; each sprocket includes cams for opening each gripper as the gripper moves past, whereby each gripper grips a printed item as it leaves the vane wheel, carries the respective printed item to a transport so that the printed items are overlapped on the transport, and then releases the printed item.

Abstract: In a printing press adapted to print different size paper, after the imprinting, the paper passes rotatable cutting rollers whose rotative phase position is invariable; the paper next passes a folding knife cylinder and a coaxial gripper cylinder; the gripper cylinder has cam controlled fingers thereon; cams control these fingers; the rotative phase positions of the folding cylinder, the gripping cylinder and the gripper finger control cams are adjustable through respective control gearing for each of them and with respect to the invariable phase position of the cutting rollers; there is a rigid drive connection to the control gearing for each of the phase adjustable parts for jointly readjusting their phase positions for different size paper; individual calibrating adjustments disengageably connect each phase adjustable part from the rigid drive for individual corrections.

Abstract: A cutting device for a folding apparatus of a rotary printing machine: a folding cylinder which delivers printed product to folding rollers, a cutting cylinder having means to cut the printed product and means to press the printed product against the folding cylinder until the time for release of the printed product; means for moving the axis of the cutting cylinder around the axis of the folding cylinder thereby to adjust the release point of the means that presses the product against the folding cylinder.

Abstract: A rotary printing press assembly having a plurality of serially arranged printing units includes a chain conveyor apparatus for sequentially continuously moving a material web through the successive printing units of the assembly. The forward end of the material web to be passed through the assembly is looped about a lead-in bar which is then engaged by a chain conveyor in order to pass the web through the printing units. A pivoted pawl engaging mechanism fixed to the chain conveyor locks in engagement with a recessed cam surface of the lead-in bars while a locking bolt enters a bore in the lead-in bar to effect driving engagement between the lead-in bar and the conveyor chain. When the lead-in bar has passed through a printing unit the driving pawl is automatically disengaged from the conveyor chain of the printing unit, and for lead-in bar is transferred into engagement with the conveyor chain of a next printing unit.

Abstract: In a rotary printing machine, the cylinder for holding the printing plate has a printing plate tensioning device formed in it, which includes an adjustably positionable tensioning rail. To adjust this rail, a set of marks is formed on the cylinder. A support base carries an optical device to view the marks. On the base there are tensioning rail engaging adjustably positionable abutments and the alignment of the marks in the field of view of the optical device enables proper positioning of the abutments and of the tensioning rail.

Abstract: A ductor or film-transferring inking mechanism for printing machine, particularly for offset presses, which comprise a plate cylinder having a printing form, an ink reservoir and a ductor roller mounted for rotation so as to dip into the ink reservoir and at least one additional rotatable distributor roller engageable between the ductor roller and the plate cylinder. A rotatable takeoff roller is associated with one of the distributor rollers of the inking mechanism and is adapted to engage with one of these rollers and take up the periodically unused and no longer applicable ink from this roller and to be moved to a position so as to be engageable with a stripper roller so as to transfer this ink to the stripping roller. A stripper such as a ductor blade is engaged with the surface of the stripper roller and it strips the ink therefrom and permits it to return into either a separate container or directly back into the ink reservoir.

Abstract: Apparatus for forming in a sheet a fold extending transversely of the direction of sheet travel therethrough is provided with a triad of cylinders rotating about parallel axes. The sheets to be folded are first engaged about the periphery of a first of said triad of cylinders with their trailing and leading edges engaged by releasable grippers. A folding blade located between said grippers on said first cylinder causes a portion of the sheet intermediate the leading and trailing end thereof to be engaged by a folding flap provided on a second of said triad of cylinders. The folding flap engages the sheet at an intermediate point thereon and draws the sheet off said first cylinder while the sheet ends are positively held in a controlled manner. The third of said triad of cylinders cooperates by engaging the leading end of said sheet as said sheet is drawn off said first cylinder by the second cylinder.

Abstract: In an arrangement for regulating the moistening solution mixture for use in an offset printing press, a tank is provided with two separate spaces, one for the moistening solution mixture and the other for a moistening solution additive. A conduit system containing various regulating devices is connected to the tank for regulating the introduction of the additives into the mixture and for the supply of the solution to the printing unit, a crystal sand filter is located in the conduit system for filtering the mixture and a pump, associated with the filter, directs a part of the filter mixture to the printing unit and returns a part of the mixture to the tank. A flow measuring electrode is arranged in the conduit system and is operatively connected to the regulating devices for controlling operation of the arrangement.

Abstract: In a printing press including a first roller which is rotatable about a stationary axis and an adjustably positionable second roller spaced from the first roller, a third roller is adjustably positionable into contact with the first and second rollers initially by positioning it in contact with the first roller and fixing the relative positions of the two rollers and then by placing the third roller into contact with the second roller while maintaining the fixed relationship between the first and third rollers.