Abstract: A web and sheet sluice adjustable to different material thicknesses for sheets of paper or the like, which are fed to a processing or treating unit. The sluice has a passage gap between a friction roller, which rotates continuously during the working operation, and an axially parallel braking roller, which is radially adjustable in relation to the friction roller. An electric switching element sends a control signal for an electric circuit during the adjustment of the passage gap to the thickness of a sample located in the passage gap. The braking roller is rotatably mounted on the cylindrical eccentric of an eccentric shaft, which can be driven by a first electric motor drive and can optionally be adjusted to both directions of rotation, and with the friction roller stationarily stopped, it can be driven by a second electric motor drive at a speed of rotation that is substantially higher than the velocity of adjustment of the braking roller via a driving gear which can be moved out of its normal position.

Abstract: A motion indicating device used especially to monitor the movement of sheets of paper, which are moved via conveyor paths. A scanning device has a rotatably mounted scanning member, which lies on the scannable surfaces of the moving sheet of paper and is set into rotation by same, and which is provided with signal elements, which generate motion signals in a stationary electronic signal transmitter by their rotary movements. The scanning member is a ball (8) with uneven weight distribution or a hollow ball (81, 82). The ball is guided freely rotatably in a guide cage (7) and has at least one signal element. A signal transmitter is arranged on a side located diametrically opposite the contact point (19) of the ball (8) and is directed in this plane of rotation toward the ball (8).

Abstract: A buckling-type paper sheet folder comprises a protective housing (7) and two pairs of folding cylinders (W1, W2, W3, W4) which are mounted in a cylinder frame (1) and conjointly driven by an electric motor (4). Folding pockets (5,6) and the cylinder frame are enclosed on all sides by the housing which has two parts, namely a base (8) and a cover (9), that are hinged and/or detachably connected to each other. In the base, a box-like compartment (12) is formed below the folding pockets accommodating the cylinder frame. The cover comprises a wall (45) extending between vertical side walls (40,41) and covering the upper foldin pocket (5) and having a portion (48) forming the upper boundary of a sheet intake opening. The cover further comprises a second wall (54) extending above the second folding pocket (6) inwardly, to form the lower boundary of the intake opening (51), and having a front portion 39.

Abstract: The present invention provides a device that makes possible to turn individual sheets of paper 3 by an angle of 90.degree. during their transport without a change in their direction of feed, arrow 8, even at high speeds of feed. In the device according to the present invention, a stopping roller 22 with a pressure ball 33, is driven opposite to the direction of feed, arrow 8 and is arranged directly in front of the taut side 23' of a conveyor belt 23 in the direction of feed, arrow 8. A longitudinal row of pressure balls 22-29 are in contact with the conveyor belt 23. A drive roller 34 is driven in the direction of feed, arrow 8, and is provided with a pressure ball 35 in contact with a higher contact pressure than the pressure ball 33 to the stopping 22. The driver roller 34 arranged laterally offset from the feed web center 38 and directly in front of the roller stopping roller 22.

Abstract: A buckle folding machine with at last one pair of folding rollers and at least one folding pocket (1). The folding pocket includes a top rail (43), which extends over the width of the folding pocket (1) and is attached to lateral toothed belts (26, 27) and has, on its side facing the folding pocket mouth (9), a plurality of stop fingers (44). The stop fingers have front end faces (48), located in a common plane, serve together as a paper stop within the folding pocket (1), and which can be brought by the toothed belts (26, 27) into a front deflecting position, in which their front end faces (48) together act as a paper deflector and guide the material arriving at the folding pocket mouth (9) for folding past the folding pocket (1) and into the next folding station (F2).

Abstract: A conveying device for sheets of paper, or similar materials, with some continuous conveyor belts (8 and 9) which are led over localized drive rollers (18 and 19) and also over localized return rollers (6, 7) and then over additional mutually displaceable turn-around rollers (27, 28, 29 and 30). The supporting frame includes a supporting guide track which runs between the return rollers (6, 7) and the drive rollers (18 and 19). The drive rollers (18 and 19) are mounted in a plane lying above the supporting guide track (1). A short sliding carriage (24) is provided as an adjustable component of the supporting frame, the carriage being adjustable, in an infinitely variable manner, and fixable in position on the upper side of the supporting guide track (1) between the drive rollers (18 and 19) and the return rollers (6, 7) by guiding elements and clamping elements.

Abstract: The device for feeding sheet stacks 26 has a guiding device 5, in which a plurality of endless guide belts 18, 19, which guide the sheet stack 26 to a motor-driven sheet feed device 8 arranged on a removal side of the sheet stack. The endless guide belts 18 are arranged in an essentially horizontal stack support surface 4. The essentially vertical, stack-side feed sections of the feed conveyer belts 35 of the sheet feed device 8 are subdivided by articulated rollers 38 of a horizontal articulated shaft 39 arranged in the upper third of the sheet stack 26 into a lower decollation section 33, which is sloped by more than 5.degree. and less than 30.degree. relative to the vertical line, and an upper, more highly sloped feed section 34. To achieve reliable decollation of sheets even in the case of sheets of paper carrying high electrostatic charge, an intermittent drive 75 is provided, which drives the sheet 26' lying on the decollation sections 33 of the feed conveyer belts 35 with pulse-like acceleration steps.

Abstract: A buckle folding machine with one or several folding roller pairs (W1/W2, W2/W3, W3/W4, W4/W5) and one or several folding pockets (T1, T2), which are associated with the individual folding station (F1 through F4) and which each have a paper stop (10, 11/1, 12, 13), which can be set to different feed lengths. To also collect and jointly fold a plurality of sheets of paper (1), at least one folding pocket (T2) is designed for simultaneously receiving a plurality of sheets of paper (1) such that the individual sheets of paper (1) are able to run in automatically up to the paper stop (11/1) over their full length and remain there. A pushing device is provided (3) which performs impulse-like stroke movements by means of a special drive (31) controlled by a presettable sheet counting device (18) or code-reading device (24). These stroke movements cause the sheets of paper collected in this folding pocket (T 2) to be delivered together into the next folding station (F2).

Abstract: The friction feeder for paper sheets is provided with a continuously rotating feed roller (2) arranged under a decollation plane and with an immobile decollating roller (4) arranged above it with parallel axis, forming an adjustable decollating gap. Continuously driven conveyor belts (14-17), whose delivery strands (14'-17') extend on both front sides of the feed roller (2) in the decollation plane are also provided. To achieve accurate starting and stopping of the decollation process, pre-decollating rollers (35, 36), which loosely lie on the delivery strands (14'-17') of the conveyor belts (14-17) in front of the decollating roller (4) in the delivery direction (arrow 7), and the pre-decollating rollers are mounted nonrotatably on a common, freely rotatable shaft (37), whose axis is parallel to the decollating roller (4), and the lowermost paper sheets of a sheet stack (23) located in front of the pre-decollating rollers are in contact with the pre-decollating rollers.

Abstract: A paper-folding machine with a plurality of folding rollers, which form a folding station in pairs and the distances between whose axes can be set to different folding gap widths corresponding to the paper thickness to be processed and the number of layers of paper passing through the individual folding stations, as well as with mechanical or electronic feed limiters, which are arranged in front of the individual folding stations and can be set individually to different feed lengths. The thickness of the incoming material to be folded, which is determined by means of a thickness-measuring device (40), and the sheet length of the arriving material to be folded, which is determined by a length-measuring device (41), as well as the desired type of folding and/or the set feed lengths of the individual feed limiters (T1-T4), are entered into a process computer (20) to determine the folding gap widths of the individual pairs of folding rollers (W1-W5).

Abstract: The paper folding machine is provided with a roller pair (T1,T2) which forms an intake zone (E) and determines the velocity of feed of the material to be folded, and with at least one pair of folding rollers (W1,W2,W3), which forms a folding zone (F1) and is parallel to the former pair of rollers. A stopless feed limiting device, which determines the actual folding length and can be actuated individually for each folding operation by a microprocessor and/or an electronic control circuit as a function of a feed measuring unit, is arranged in a material feed path (4) which extends past the folding zone (F1,F2).

Abstract: A device for folding successively fed sheets which have a plurality of transversely spaced dried adhesive areas thereon includes a plurality of folding rolls arranged in a sheet feedback between which the sheets are fed and which have at least one pocket into which the sheets are fed after they have been folded at least once as they are passed between folding rolls. The sheet wetting device comprises a plurality of moveable belts which are arranged over the sheets as they are fed through the sheet feed path, they are guided and moved through a path in which they overlie each sheet in succession. Construction includes means for holding at least some of the belts into contact with the sheets as they are moved in order to wet the sheets in selected areas in it includes means for passing the belts into association with a belt wetting device or reservoir so that they wet the dry areas which they contact.

Abstract: In a sheet feed bench with two parallel sheet feed rails that are adjustable relative to one another and with each having blowing jets on their surfaces facing one another directly above the level of the bench, connected to a common source of compressed air, the sheet feed rails resting on the bench surface are provided with groove-like or notch-like enlargements at the level of the blowing jets. Each of these extend over the entire length of the sheet feeder rails. These enlargements make it possible to position the inner surfaces of the sheet feeder rails so closely and tightly against the longitudinal edges of the stack of sheets that only small amounts of compressed air can escape upward. The formation of an air cushion is improved by this in such a way that the stack height can be more than double without adversely affecting the single-sheet separation.

Abstract: A sheet separator for a sheet feeder comprises a friction cylinder which is rotatable for feeding a sheet from a stack of sheets. A retaining member is mounted for radial movement with respect to the friction cylinder. The retaining member has a friction surface which holds back other sheets in the stack and which forms with the friction cylinder a passage gap which is adjusted to the thickness of a sheet to be fed. A carrier is connected to and supports the retaining member. An adjustment mechanism is provided between the carrier and the retaining member for adjusting the passage gap width. A bracket is mounted for radial movement on the carrier and has a contact surface for engaging the friction cylinder or a sheet held in the passage gap. Signal switch is provided in the bracket and is activated by a checking element which is movably mounted to the bracket and engaged with either the carrier or the retaining member.

Abstract: A buckling-type paper sheet folder comprises at least two pairs of folding cylinders W1 and W2 and two folding pockets F1, F2. The adjustable sheet stops 65,66, embodied by stop rails, of the folding pockets F1, F2 are secured to endless belts 67,68,69 and 70 which are drivable, conjointly two and two, through a manually actuable shaft 79 or 80. Scales of length S1 to S8 are carried on scale bands 48 and 49 which are associated each with one of the folding pockets F1 or F2 and displaceable by, the respective drive shafts 79, 80 in synchronism with the sheet stops 65, 66. The scale bands 48 and 49 are mounted in the housing to be visible through windows which are provided with reference marks. The sheet stops 65 and 66 can be set to the desired position through the closed housing by means of knobs 81 and 82. To facilitate the setting of the sheet stops, a plurality of scales S1 to S8 is provided on each scale band, each associated with a folding manner and sheet size, and made separately noticeable by a light.

Abstract: A folding machine includes an entrance feed for the infeed of materials to be folded which are operated on by a plurality of folding devices arranged along the feed path, each of which feeds the material after folding into a receiving pocket which has an adjustable stop. The stop is adjusted so that the materials being fed are received in the pocket at the correct location so as to position them for subsequent folding or for ejecting at an ejection point. The invention provides a conveyor belt which operates so that an upper transport reach is movable below the ejection point to receive the folded materials. Associated with the conveyor is a brake element which overlies the materials which are fed on the conveyor transport reach. The brake element rests on the folding material and is mounted so that it applies a yieldable pressure on the materials as they moved therealong.

Abstract: A pneumatic sheet feeder for removing individual sheets from a stack comprises a table having a surface for supporting a stack of sheets. A pair of parallel guide rails are provided on the table and with facing surfaces so that the stack is confined between the guide rails for movement in a feed direction across the table. Blast nozzles are provided in the guide rails for blowing air against the stack to form an air cushion between lower sheets of the stack. A suction cylinder is rotatably mounted to the table and includes a suction chamber therein for receiving a vacuum. Radial openings in the suction chamber cause a suction induced adhesion of a leading edge of a lowermost feed in the stack so that with rotation of the cylinder, the lowermost feed is fed in the feed direction away from the rest of the stack. A single blower is provided with a pair of two-way solenoid valves and a switching circuit is provided for alternately activating the valves.

Abstract: A folding machine for folding sheet material comprises a housing defining a space and having an in-take opening and a discharge opening for sheet material before and after it is folded. A frame is provided in the housing and carries four rollers which are engaged with each other to form a take-in nip for receiving sheet material from the in-take opening, a first folding nip for executing a first fold on the paper and a second folding nip for executing a second fold of the paper. The rollers are engaged to each other by gears and are rotated by a single electric motor for moving the sheet material from the take-in nip to the first folding nip and from the first folding nip to the second folding nip. A pocket is formed upstream of the first folding nip in the housing for receiving the sheet of paper to stop its forward progress. The sheet of paper is continued to be fed by the take-in nip so that it folds into the first folding nip which draws the now once folded paper from the first pocket.

Abstract: A washing unit for an offset duplicating machine, with the washing unit including a washing tank for accommodating a cleaning fluid and a washing roller arranged in the washing tank in such a manner so that at least a portion thereof is dipped in the cleaning fluid accommodated in the washing tank. The washing tank is connected to a circulatory system for recirculating the cleaning fluid. The circulatory system includes a pump for pumping the cleaning fluid through the circulatory system and a filter for filtering the cleaning fluid while the cleaning fluid is being recirculated in the circulatory system.

Abstract: A device for distributing sheets in a predetermined sequence into a plurality of collecting pockets successively arranged in a horizontal sheet feed path includes a guide member connected at the upper end of each of a plurality of walls successively arranged beneath the feed path to define the collecting pockets. The guide member extends at a substantially equal angle of inclination relative to the feed path and a deflection plane through which the sheets are deflected. A guide tongue connected to the guide plate extends in the same plane of inclination of the guide plate and projects into an adjacent one of the collecting pockets. A guide fin, connected to the guide plate, is provided for preventing areal contact between a deflected sheet and a guide plate.