Abstract: To pull apart interfolded, imbricated paper copy products (4, 5), two pairs (1, 2) of upper and lower transport systems, typically sprocket chains, each have engagement projection elements (10-13), preferably roller elements, extending therefrom, and gripping laterally projecting edges of the respective imbricated in-folded copy products. The paths of the upper and lower transport systems (6-7, 8-9) converge towards each other to grip the copy products and, after having gripped the copy products, the pairs diverge laterally from each other to pull out and pull apart the copy products (4', 5') gripped by the respective pairs of the transport systems, the upper and lower transport systems then diverging to release the copy products to further removal transport arrangements, for example transport belts (17, 18).

Abstract: A sheet gripper for the delivery system of a printing machine or the like includes a clamp member adapted to be secured on a pivotable gripper shaft, and a gripper finger mounted resiliently on the clamp member and adapted to be brought into contact with a sheet to be gripped during pivoting of the gripper shaft. The clamp member is made of two sheet-metal parts and includes a base member and a bottom part, which are adapted to be hooked into engagement with one another on one side of the shaft and connected together by a mounting screw on the other side of the shaft to secure the clamp member on the gripper shaft. The gripper finger is also secured on the base member at one end by means of the mounting screw and is adjustable by means of a set screw threadably received in the base member approximately at the other end thereof.

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: A cam drive is used to drive the auxiliary gripper on a sheet-fed printing machine having a control cam and an auxiliary cam and associated cam followers. In order to use a minimum amount of pages and eliminate any bending moments from the forces between the cams, the control cam and the auxiliary cam are disposed in a common plane on two parallel shafts and the control lever and associated followers are disposed in the same plane between the cams.

Abstract: An intermittent motion horizontal packaging machine in which pouches made one at a time by a pouch making section operating at a high index cycle rate are filled two at a time while being advanced in a single row by a pouch filling section operating at one-half the index cycle rate of the pouch making section.

Abstract: A system removes and conveys a sample copy from a fast moving, orderly material flow of printed materials without disturbing the other products in the material flow. The apparatus includes a power driven conveyor and a conveying chain mounted on guide pulleys, with one of the pulleys located adjacent the material flow. A gripper is coupled to the chain and has a cushioning spring. A cushioning clamp engages and pretensions the cushioning spring to engage a selected sample copy. A control regulates operation of the gripper and clamp in response to detection of individual products and their speed.

Abstract: A sheet handling mechanism for use in a duplicating machine for duplicating images on both sides of copy sheets including a first printing couple for transferring a first image to a first side of a copy sheet and a second printing couple for transferring a second image to a second side of the sheet. The sheet handling mechanism includes a conveyor movable between the first and second printing couples. Gripper mechanism are operatively associated with the conveyor for gripping the lead end of a copy sheet issuing from the first printing couple and rotating the sheet about an axis generally parallel to the direction of movement of the conveyor to present the second side of the sheet, lead end first, to the second printing couple.

Abstract: Shingled precisely spaced papers are carried off a first conveyance path on a moving belt at a first speed into a further conveyance path along which a set of spaced clamps which individually grasp each paper flow at a substantially constant lower transit speed. By gradually inserting a paper into an open clamp travelling alongside in a parallel path over a predetermined transfer zone length overlapping a plurality of successive clamps, the instantaneous nature of feeding a paper into a clamp is changed so that a higher paper feed speed can be tolerated. By inclining the shingled paper feed path downwardly over the transfer zone, the drag of the papers off the shingled array is reduced to prevent any tendency to misalign the papers from a seated position in the clamps.

Abstract: Apparatus and process for collating folded signatures which are removed from a stack of signatures and placed in parallel side-by-side relationship on saddle members. The saddle members move in a direction transverse to the folds in the signature, and thus spacing of the saddle members is close together and the entire apparatus and process can be performed at a high speed, in that arrangement. A signature pickup device is employed for removing the signatures from the stack in a stream relationship and delivering them directly to a collector where a flap opener can be employed for positioning the signature flaps on opposite sides of the collector saddle members.

Abstract: An apparatus which advances a sheet into registration with information developed on a moving member. A sheet gripper transports the sheet in a recirculating path. The sheet gripper is detachably coupled to the member over a portion of the path of movement thereof to place the sheet in registration with the information developed on the member. Thereafter, the sheet gripper is decoupled from the member to move independently thereof.

Abstract: A dual-chain sewing machine for aligning the edges and the corresponding seam tracks of pieces of a garment that have different curvatures and for sewing the pieces together along the seam tracks includes two flexible, elongated carriers, which move at approximately the same linear speed and which are mounted and arranged for motion around continuous paths. Each carrier has pins extending from it in a direction transverse to the direction of movement, with the pins of one carrier extending toward the pins of the other carrier. A first fabric piece is applied to the pins of the first carrier when a pin bearing portion of the first carrier is in a path segment corresponding to the seam track on the first fabric piece; a second fabric piece is applied to the pins of the second carrier when a pin bearing portion of the second carrier is in a path segment corresponding to the seam track on the second fabric piece.

Abstract: A gripper opening/closing apparatus in a sheet-fed rotary printing press, the apparatus having a broadside printing cam and a perfecting cam which are commonly brought into contact with cam followers, and which are adjacent to each other to be coaxial with an impression cylinder, and the apparatus being arranged such that, in a broadside printing mode, grippers of the impression cylinder are opened/closed by the broadside printing cam to cause reversing grippers of a reversing cylinder to grip a leading end of a printed sheet gripped by the grippers of the impression cylinder, and that, in a perfecting mode, the grippers of the impression cylinder is opened/closed by the perfecting cam and the broadside printing cam to cause the reversing grippers of the reversing cylinder to grip a trailing end of the printed sheet gripped by the grippers of the impression cylinder, wherein a central angle of the impression cylinder which is formed between a sheet gripping position where the grippers of the impression cylind

Abstract: A sheet diverter system in which a stream of sheets is fed by a pair of tapes to a gripping zone between a pair of separating cylinders. The tapes on opposite sides of the sheet diverge downstream of the gripping zone and wrap around a part of the outer periphery of the adjacent separating cylinder so that they travel at the same velocity as the outer periphery of the cylinder. The sheets advance toward the gripping zone at a velocity controlled by the separating cylinder and successive sheets are presented to the grippers carried by the cylinders so that alternate sheets are carried along different paths to different delivery stations.

Abstract: In a reproducing machine having copy sheets advancing through a processor to have information recorded thereon, it is necessary to be readily able to remove jammed sheets therefrom. A display on the reproducing machine indicates to the operator when a jam occurs. In response to the occurrence of a jam, all of the sheets in the processor are automatically freed from their respective sheet transports. In this way, the operator may readily remove the jammed sheet from the respective transport.

Abstract: A pick-up unit in a printed sheet transport device for a printing machine includes a gripper shaft, a number of grippers and a number of corresponding counter gripping members, and a traverse which encloses the gripper shaft and the grippers at three sides. The traverse has a front wall, an upper wall and a rear wall; the latter extends to a plane of transporting of the printed sheet at an acute angle and is formed with a projection which extends inwardly from the rear wall of the traverse.

Abstract: Improved apparatus for facilitating the transfer of a printed sheet, without smudging or wrinkling, to a chain delivery mechanism of the type commonly used in an offset printing system. The apparatus is of the type that includes a bar having a pair of clips at its opposed ends for engaging the continuous chains of the chain delivery. The bar includes at least one paper contacting member that is both rotationally and longitudinally adjustable thereon. The clips, which releasably secure the bar to the continuous chains, are arranged to apply compressive retaining forces to the (inner) vertical side members pre-selected links of the continuous chains so that the mobility of the links of the chains is substantially unaffected by the presence of the clips.

Abstract: The present invention relates to a recording paper winding apparatus for winding a recording paper on a rotary drum, by providing a bar for pinching a front end of a recording paper between the bar and the outer surface of a rotary drum, whereon a recording paper is to be sucked by making inside a negative pressure. Thus, the recording paper can be wound on the drum by a simple operation and held tightly thereon.

Abstract: A guided endless, revolvingly driven traction element is equipped with controlled gripper units or grippers arranged in spaced relationship from each other. These gripper units are adapted to grip one margin of the paper products which constitutes a lateral marginal edge of the product as seen in the transport direction thereof. The gripper units have substantially planar clamping faces inclined at the same direction with respect to the traction element for stiffening that portion of the transported paper products which laterally project from the gripper units. The transported printed products thus have imparted thereto a corrugation or undulation extending transversely with respect to the transport direction which results in the desired stiffening of the products.

Abstract: An automatic paper handling system capable of loading individual sheets of a stack of paper onto a drum for printing or scanning, escaping a printing or scanning transducer relative to the drum, and stacking the sheet of paper after printing or scanning is additionally provided with duplexing capability to print or scan on the opposite side of a page of paper previously mounted to the drum without the requirement for manual reloading of the page by an operation. During unloading of the page after printing or scanning on a first side thereof a deflector path is interposed in the paper unloading path to cause the trailing edge of the paper during unloading to become the leading edge of the paper for a succeeding loading operation such that the side of the paper previously in contact with the drum will become the side of the paper exposed to the printing or scanning transducer.

Abstract: A conveyor apparatus for successively receiving single newspapers being advanced by a conveyor loading device and advancing the same to a downstream location for additional processing. The apparatus includes an endless conveyor track having a conveyor chain that supports a multiplicity of pocket members in close proximity with the outer surface of the conveyor track and for movement about the extent of the track. The pocket members are equally spaced about the chain and each includes a pair of spaced spring biased arcuated fingers that are continually urged in a direction to engage and maintain a newspaper in a pocket when received from the loader. A cam controlled lever is operatively connected to the arcuated fingers and serves to control movement of the latter between positions for receiving and releasing a newspaper from a pocket and a position for maintaining one within a pocket.

Abstract: A gripper mechanism for printing press folding machines or other sheet handling equipment comprises a rigid holder mounted on a pivot shaft and a resilient gripper finger, fixed to the holder, which pivots into engagement with an angled clamping surface. The geometry of the gripper finger relative to the holder is such that the rigid holder and resilient finger act as a linkage which, upon application of counterforce by the clamping surface, imparts a radial component of force to the gripper tip equal and opposite to the radial component of counterforce, thereby producing non-sliding engagement of a sheet of paper positioned between the clamping surface and said tip.

Abstract: Device for automatically positioning a sheet on an office machine platen, including a lower guide element to guide the sheet toward the writing line of the platen and an upper guide element to guide the sheet towards the top. During the introduction of the sheet, an electromagnet is energized to let the lower guide element turn with the platen, accompanying the sheet beyond the writing line. The electromagnet also causes the contemporary separation of the upper guide element from the platen. When the sheet reaches a predetermined position with respect to the writing line, the electromagnet is de-energized and a spring again brings the two elements to the rest position. An automatic introduction mechanism sequentially transfers the sheets from a hopper to the platen and from the platen to a sheet stacker.

Abstract: In a gripping equipment for sheet-processing machines wherein sheets are engaged by grippers moved along by driven chains and are forwarded intermittently from one station to the next, wherein the grippers are carried by a gripper shaft and are supported at their ends for swivelling movement about an axis parallel to the longitudinal axis of the gripping equipment, the improvement wherein the gripping equipment comprises a carriage having fixedly-supported rollers at the one end and resiliently-supported rollers at the other end for rolling on guideways at the stations to effect guidance transverse to the course direction of the carriage. Each of the leading ends of the gripper carriage is supported on one chain link for rotation about an axis parallel to the gripper shaft and counter to spring resilience. The carriage is guided by a roller and a roller guideway independent of the chain track.

Abstract: A strip conveyor transports a strip by the edge thereof with a guide clip, the ends of which are coupled to chains of the conveyor. Sensors are arranged at a position where the clip becomes disengaged from the conveyor, and upon both ends of the clips reaching this position, a holding and transporting device engages the strip, and then conveys it for cutting along lines perpendicular to edges of the strip.

Abstract: A sheet fed printing press having an impression cylinder with a feed board presenting a sheet with its leading edge in a position for pick up. A rotary sheet feeder is interposed between the feed board and the impression cylinder for picking up the leading edge of the sheet from its stationary position and transferring the leading edge to grippers on the moving impression cylinder. The sheet feeder is directly driven by a high powered electric motor. High resolution pick up heads and associated angle coders produce output signals respectively representative of the phase position of the cylinder and sheet feeder. A programmed phase offset device is provided defining a predetermined relation of desired feeder phase as a function of impression cylinder phase.

Abstract: A gripper tractor assembly is provided for selectively grasping, conveying and releasing newspapers and like products in a high speed transit path between processing stations. Its structure comprises two jaws pivotable about a common pivot pin for movement between open and closed jaw positions by means of a cammed lever assembly and equipped with rollers for engaging a transport tract defining its travel path. Alignment of the products is assured by a pair of separated stops against which the paper is positioned and gripping means centered therebetween. The papers are gripped by a rubber-like O-ring mounted on an arm extending from the gripping edge of one jaw as the edge is abutted against the stops in self-aligning fashion. The tractors are positioned at precise spacing along a link chain for movement therewith. Removable attachment means for the carriage includes an L-shaped chain link, which permits removable bolt coupling of the carriages to the link chain for easy maintenance and installation.

Abstract: A sheet-fed rotary printing machine with a turn-over mechanism includes a turn-over cylinder interposed between printing cylinders in a pair of printing units and having a pair of gripper shafts mounted on an outer circumferential surface of the turn-over cylinder in diametrically opposite relation. A plurality of turn-over gripper devices are mounted at intervals on each of the gripper shafts, each turn-over gripper device being composed of a fixed turn-over gripper and a loosely fitted gripper pad assembly. The turn-over cylinder also has a cam mechanism for turning over the turn-over gripper devices and another cam mechanism for opening and closing the turn-over gripper devices.

Abstract: A sheet-gripping device for sheet-processing machines includes a sheet-gripping member with a sheet-supporting surface of non-elastic material and a counter sheet-gripping member with a counter sheet-supporting surface made of elastic material. The sheet-supporting surface of the sheet-gripping member is formed with a plurality of projections located in first and second rows which extend skew to one another whereby a high uniform effect is attained in holding and transferring sheets being processed in the grippers closed in a vertical direction.

Abstract: To prevent uncontrolled movement or flutter of a trailing end of a sheet being removed by a chain conveyor from a delivery drum (7) of a printing system (1), the sheets are gripped by grippers (10) connected to cross struts (9) of two chains (8), and engaged by sheet engaging brushes (19, 22) or rollers or ducts (30, 34) with differential pressure application, such as compressed air, to urge the sheets against a sheet guide vane (13) or strip. To prevent interference with the grippers (10) on the chain conveyor, the sheet guide elements are lifted off from the sheets upon passage of the grippers by a cam-cam follower arrangement. The cams may be secured to the gripper structures in the form of cam curves (11), engaged by cam followers (17, 22) which pivot or tilt cross rods (15, 20) to lift the brushes off the sheets; or a cam (25; FIG.

Abstract: A single paper sheet product separator, feeder and transport mechanism is provided capable of high speed in line product feed rates from a stack of products of 60,000 per hour for on-line operations with high speed rotary presses, trimmers, binding machines, folders, etc. By initially bending only a bottom edge of the product stacked on edge, reliable high speed separation is feasible. A scalloped periphery rotary member provides indentations for precisely seating and spacing the individual documents and grasping them to pull them substantially horizontally from the stack, in shingled array if desired. The products are retained against the rotary member by a moving belt over an arc of substantially 180.degree. to be discharged substantially horizontally onto a conveyor belt for further transport.

Abstract: An apparatus for printing the back, or "verso", side of a sheet being fed from a sheet-fed printing press into a delivery unit, the sheets being conveyed by an endless loop conveyor made up of a pair of laterally spaced conveyor chains. Cross members extend between the chains at regular intervals and carry grippers for gripping the leading edge of a sheet. The chains are guided so that they form a delivery run and a return run spaced apart and generally parallel to one another. An impression cylinder is journalled between the runs having an axial length which is shorter than the lateral spacing between the chains. A blanket cylinder is journalled outside of the delivery run in rolling engagement with the impression cylinder. A plate cylinder having inking and dampening systems is in rolling engagement with the blanket cylinder. The impression and blanket cylinders have mating longitudinal grooves of a size sufficient to provide free passage for the cross members and grippers.

Abstract: A sheet clamping device is provided which is used to clamp both the leading and the trailing end of a sheet while the sheet is being disposed around the peripheral surface of a drum rotating in a given direction. The drum is provided with a front and a rear claw which are adapted to clamp the leading and the trailing end of the sheet, respectively, and which are urged to bear against the peripheral surface of the drum. The claws are operated to open or close in response to respective claw operating means. After a sheet has its leading end clamped to the drum surface by means of the front claw, combing urges the sheet against the drum surface while combing it, and the trailing end of the sheet is clamped to the drum by means of the rear claw.

Abstract: A facsimile transceiver unit utilizing a drum wherein a drum gripper bar grips an edge of a sheet to be scanned during system operation. On termination of operation, the drum direction is reversed allowing the beam strength of the scanned sheet to lift the free edge of the sheet off the drum. The sheet is then picked off by a suitable member and directed out of the facsimile transceiver unit. At the same time, the gripper bar is opened releasing the sheet for easy operator removal. In a preferred method, the sheet is bumped by the raised gripper bar to ensure release of the sheet from the facsimile transceiver unit.

Abstract: A double belt conveyor for a high speed mail sorting machine. The belts are arranged with confronting surfaces thereof spaced apart in vertical planes to convey mail articles in a vertical orientation. The belts have flexible fingers which deform to accommodate mail articles of varying thickness between the belts.

Abstract: An automatic ply applying apparatus and method for forming an elastic annular body, such as a vehicle tire, by transporting each ply to a former, retaining a portion of the ply adjacent to the leading end of the former, applying the leading end portion of the ply to the peripheral surface of the former and applying the remaining portion of the ply to the peripheral surface of the former during rotation of the former.

Abstract: A cylindrical drum of a rotary transfer conveyor rotates below an opening at the bottom of a magazine for a stack of superimposed sheets. The drum carries a first pivotable gripping lever and one or more second pivotable gripping levers. The common pivot axis of the levers is parallel to the axis of the drum, and the levers are pivotable by cams so that their speed relative to the magazine is less than the peripheral speed of the drum during travel immediately below the opening in the bottom of the magazine. At such time, a set of suction cups flexes a portion of the lowermost sheet of the stack through the opening and between the first and second gripping levers so that the speed of the engaged sheet need not be immediately accelerated to the peripheral speed of the drum but merely to the relatively low absolute speed of the levers.

Abstract: A driving mechanism for groups of operating elements arranged in a rotary sheet guiding cylinder of a sheet-fed printing machine includes a pair of control shafts arranged in the guiding cylinder parallel to its axis of rotation and being driven by transmission gears arranged in the cylinder, two sets of cams, each supported on an assigned control shaft for activating a group of operating elements in a selected operational mode of the machine, and clutch means provided between the transmission gears and the shafts and operated from one point to actuate one control shaft and deactivate the other control shaft.

Abstract: A method and apparatus for separating and individually transporting flexible sheets from a stack to at least one processing unit wherein one stack edge is compressed and the topmost sheet is picked-up by pick-up heads at its edge situated at the compressed stack edge, the engaged edge is lifted from the stack, and the lifted edge is gripped by horizontally moving removal elements which remove the partially lifted sheet from under the pick-up heads and carry it away in a horizontal direction at least beyond the pick-up zone whereby the sheet is progressively turned and rolled off the stack and transported to a registering mechanism where the sheet is oriented in a predetermined position for feeding to the processing unit.

Abstract: A conveyor is disclosed for labelling apparatus. The conveyor comprises a plurality of clamps and endless carrier for the clamps. Each clamp is urged to a closed position by a spring and is adapted to be held in an open position for receiving an unlabelled folder. Means closes each clamp to grip sheet material and hold it while it is being labelled for purposes of accurate receipt of applied labels. The body portion presents a base which supports clamped material. A moveable clamp jaw is secured to a member which is adapted to slide in and out of the body portion. The spring means is associated with the member to urge the clamp jaw towards the clamp base. The member has mounted thereon, remote from the jaw, a roller means adapted to rotate about an axis perpendicular to the longitudinal axis of the member. A slider cam is laterally moveable in the body portion and is in contact with the roller. The slider cam has upper and lower cam segments to provide respectively open and closed positions for the clamp.

Abstract: The invention relates to a sheet transfer device, for offset printing machines which print on one side of the sheet or on both sides of the sheet of paper, having a means for adjustment to accommodate sheets of different sizes, achieving thereby an accurate register printing.The feature of the device according to the invention is a reset wheel of the sheet transfer drum which is adjustably mounted on a centering flange, on rollers rotatably mounted on eccentric pins mounted in the centering flange. The centering flange has rotatably mounted eccentrics, which bear on carrying projections of the transfer drum body, while the transfer drum reset wheel is fastened to the flange. The clearance between the reset wheel and the flange centering diameter is adjusted by eccentric pins, while at the same time the reset wheel is centered so that its gearing is precisely centered with the transfer drum axis. The clearance of the toothing of the reset wheel is taken up by take-up segments.

Abstract: In a transfer cylinder for perfector printing machines having two diametrically opposed sheet-supporting surfaces formed from two groups, respectively, of sheet supports engaging comb-like one within the other, one of the two sheet-supporting groups of one sheet-supporting surface having a device for gripping the leading edge of a sheet, and both of the sheet-supporting groups forming one sheet-supporting surface being adjustable relative to one another about the rotary shaft of the transfer cylinder, each of the sheet supports of a respective sheet-supporting surface being firmly connected to a diametrically opposing sheet support of the other sheet-supporting surface and being disposed on the shaft of the transfer cylinder, the improvement therein includes means for mounting together at least a plurality of the diametrically opposing, mutually firmly connected sheet supports so as to be radially adjustable.

Abstract: Attached to revolving traction elements are a number of equidistantly arranged entrainment members having impact surfaces at their leading edges. The impact surfaces engage at trailing edges of the printed products arriving in an imbricated product stream. Between the traction elements there is arranged a suction head connected by means of a connection line or conduit with a negative pressure source. The suction head fixedly retains the printed products moving therepast or delays their forward movement until the engaged printed product can be entrained by one of the entrainment members. Due to the holding back of each second printed product each entrainment member infeeds two superimposed printed products to the individual grippers of a transport device. Since each gripper conveys away two printed products the transport device can be driven at a lower velocity that the infeed velocity of the imbricated product stream, which, among other things, affords quieter travel and reduced wear of the transport device.

Abstract: A combined registration, image transfer and pickoff assembly for an electrophotographic copier in which a transfer pressure roller having an elastomeric outer layer with a hardness approximating that of the copy paper is disposed across the imaging drum at a spacing from the drum greater than the thickness of the image toner layer but less than that of the copy sheet. A registration roller is urged into line engagement with the transfer roller to form a registration nip for receiving the leading edge of a copy sheet prior to its movement through the transfer nip. A selectively actuable gripper carried by the transfer roller is opened to receive the leading edge of the copy sheet when it enters the registration nip, then retracted to clamp the leading edge and carry it around with the transfer roller through the transfer nip, and reopened on the other side of the transfer nip to allow the leading edge to be peeled from the transfer roller and directed along an exit path.

Abstract: An original feeding system having a rotary drum provided with sheet original hold-down claws for clamping the leading edge of the sheet original against the surface of the periphery of the rotary drum and with a control mechanism for keeping the claws in clamping engagement with the sheet and releasing the claws from clamping engaging therewith. A belt drive is provided for feeding the copy sheet by holding same between the rotary drum and the belt. The rotary drum is adapted to be stopped in its rotation before it completes one revolution, while the belt drive continues to be driven to feed the sheet original, which is subjected to the frictional force exerted by the belt and slides along the surface of the rotary drum. Therefore, it is possible to feed a sheet original having a length larger than the circumferential length of the rotary drum.

Abstract: An apparatus for outfeeding printed products arriving in an imbricated product stream, in which, in each case, the leading edge of a printed product overlies the rearward edge of the preceding printed product. The arriving imbricated product stream is infed, by means of a conveyor belt or band, to the conveying gap of a deflection or turning device where the imbricated product stream is turned through about 180.degree.. This deflection device comprises a deflection drum about which there is guided an endless conveyor belt. A pressing or contact belt, held under tension, is arranged opposite the deflection drum and forms together therewith the conveying gap. The pressing belt presses the printed products, traveling through the conveying gap, against the deflection drum. The conveyor belt guided about the deflection drum conveys the printed products, departing out of the conveying gap, towards an individual conveyor.

Abstract: A screen printer has a flat bed coplanar with a loading and an unloading surface on opposite sides thereof, the bed being divided into a stationary middle section and two movable outer sections confronting one another along boundary lines paralleling the direction of movement of copy sheets from the loading surface to the unloading surface. Such movement is effected with the aid of a conveyor comprising two chains underneath the bed entraining sheet-gripping jaws through the gaps formed between these sections when they are transversely separated. The jaws are almost flush with the plane of the bed and the loading and unloading surfaces; upon closure of the bed sections, they are received in cutouts of the outer sections and are thus immobilized while a printing screen descends into contact with a copy sheet overlying the bed.

Abstract: Continuously rotatable advance gripper drum assembly for sheet-fed rotary printing machines having an advance gripper drum and a gripper bridge movable relative to the drum includes a crank-driven linkage transmission device disposed on and rotatable with the drum and operatively connected to the gripper bridge for moving the gripper bridge.

Abstract: In a sheet feeding device for a printing apparatus for feeding one sheet after another to a printing station, a stopper hook is located slightly posterior to point of contact between a platen and a roller or between two rollers brought into and out of pressing contact with each other, and a sheet fed to the printing station is stopped by the stopper hook and has its position corrected, if it has a skew, while the platen and the roller or the two rollers are out of contact with each other. Thus a sheet free from skew is pressed by the roller against the platen or the roller to enable automatic skewless sheet feeding to be effected.

Abstract: Disclosed is an improved transport mechanism for cyclically conveying an original past an optical scanning device in an electrophotographic copying machine of the type in which a gripping unit engages a leading edge of an original during the entire cycling time, which reduces distortion, maximizes utilization of the transport mechanism, and enables the use of lower illumination intensities by optically scanning the original as a planar surface and by providing a pair of transport rollers downstream of the optical scanning device to insure a fast cycling and delivery of the original.

Abstract: A facsimile device of a type having a rotary drum and clamping bars movable toward and away from the drum surface to cooperate, when moved toward the drum surface, together with the drum surface in clamping therebetween the leading and trailing ends of a sheet. The device has a combination of electric and mechanical means adapted to control the movements of the first and the second clamping bars in response to the manual opening and closing action of a manually operable drum cover or the like member, such that, as the drum cover or the like is moved to the closing position, the sheet placed at a predetermined position is automatically picked up and wound around the drum and, as the drum cover or the like member is moved to the opening position, the sheet is automatically released and returned to the predetermined position.