Abstract: A device for transporting a sheet or a folded product by a transport belt includes at least one holder for holding the sheet or the folded product, the holder being operatable by an effect selected from the group consisting of magnetic and thermal effects.

Abstract: A device is used to transfer printed products from the paddle wheel pockets of a paddle wheel or a delivery fan. A gripper chain carries a plurality of grippers which remove the printed products from the pockets without damaging them. A gripper chain drive wheel and the paddle wheel or wheels have a common axis of rotation but are driven separately from each other.

Abstract: A method and an apparatus for collecting or gathering printed products to form final printed products, such as newspapers, magazines, brochures and/or books, wherein the printed products are moved along supply lines and are supplied to one or more processing locations. At least two of the printed products intended for forming a final printed product are combined at a collecting point provided in a supply line and the combined printed products are further transported together.

Abstract: A chain conveyor for transporting sheets in a sheet-processing printing press, having chain guide rails which, together with a holder for carrying the guide rails, define an interior having an open long side, and having conveyor chains carrying gripper systems for gripping the sheets. The conveyor chains being guidable by the chain guide rails, being formed by outer tabs and inner tabs joined together swivellably with respect to pivot axes and, on a side thereof, having cover tabs for covering the open long side, includes detent elements on the cover tabs for connecting the cover tabs form-lockingly to a respective outer tab; and a sheet-fed printing press having the foregoing chain conveyor.

Abstract: A timing belt is formed with a tensile member and a plurality of teeth which mesh with a sprocket wheel. One or more of the teeth are formed with an opening and a product processing device is mounted on the timing belt and attached via the opening in the tooth. The timing belt is preferably an endless belt and the teeth define an inner running surface. Grippers or similar product processing devices may be mounted on the belt so as to be pivotable about an axis through the openings in the teeth.

Abstract: A sheet conveyor for a delivery of a sheet-fed printing press, having at least one operatively revolving gripper bar guidable in a sheet conveying direction along a sheet guiding surface. The gripper bar including grippers having gripper fingers pivotable in a gripper cycle for gripping a sheet respectively conveyable by the gripper bar, is provided with a front spoiler for shielding an intermediate space located between the gripper bar and the sheet guiding surface. The front spoiler being pivotable in a cycle correlated with the gripper cycle and in the same direction as the gripper fingers.

Abstract: A device for unrolling sheets, with positively guided leading edges, travelling along a conveying path of a delivery of a printing machine for processing the sheets, the sheet unrolling device being formed with a first unrolling groove followed upline in the conveying direction by at least one second unrolling groove, and having a negative-pressure generator for subjecting a respective unrolling groove to negative pressure, includes a delaying device for delaying a negative-pressure increase in the second unrolling groove relative to a negative-pressure increase in the first unrolling groove; and a delivery of a printing machine combined with the sheet-unrolling device.

Abstract: A mailroom conveyor system for transporting and handling a stream of printed and folded signatures supplied by high speed tapes of a folding apparatus of a printing press. The system includes a plurality of grippers, a rail system for guiding the grippers, an electric linear drive system for individually driving the grippers in the rail system, and a control system coupled to the electric linear drive system for individually controlling the movement of the grippers in the rail system.

Abstract: A chain delivery assembly for withdrawing sheets from a rotating cylinder of a sheet-fed offset printing press includes first and second spaced apart sprockets independently mounted for rotation about a common axis which is parallel to the axis of the rotating cylinder, first and second gears being coaxially affixed adjacent to the first and second sprockets, respectively. A pair of chains, carried by the sprockets, have grippers for engaging leading edges of sheets to carry them away from the cylinder. A rotatable shaft, mounted away from the chains and whose axis is parallel to the axis of the rotating cylinder has third and fourth gears affixed to opposite ends thereof. The first gear is operatively connected to the third gear for rotation of the rotatable shaft and the fourth gear. The fourth gear is operatively connected to the second gear to drive the second sprocket in coordinated rotation with the first sprocket.

Abstract: A post folder diverting apparatus includes a first and second conveyor system, each having a conveyor drive, a conveyor cable, a plurality of gripper blocks connected to each conveyor cable and a gripper element attached to each gripper block for transporting signatures from a folder apparatus to separate product streams. The first and second conveyor cables are configured to follow a parallel path for part of the way and separate paths for part of the way. Each gripper block has a first recess for receiving the cable to which it is attached, and a second recess for allowing the other cable to pass through the gripper block without contacting it. The recesses in the gripper blocks are sized and spaced so as to allow gripper blocks attached to the first conveyor cable to share a common path with gripper blocks attached to the second conveyor cable where the conveyor cables follow parallel paths and to deviate from one another where the conveyor cables diverge.

Abstract: A device for depositing paper sheets, in particular on a sheet pile or stack in a delivery of a printing machine, includes a revolving belt, a drive motor for driving the revolving belt separately from any other drive system, and at least one suction device having a discretely effective suction action, the suction device being disposed on the revolving belt, the revolving belt being constructed as a toothed belt for transmitting torque and synchronicity between the drive motor and the suction device; and a method of operating the depositing device.

Abstract: A sheet delivery device with a first gripper module for carrying a first sheet a second gripper module for carrying a second sheet, a track for guiding the first and second gripper modules, and a stationary, purely mechanical diverter located at a divergence. The track including a first section, a second section and a third section the first section diverging at the divergence into the second section and the third section.

Abstract: A transport system (1) is provided for removing individual signatures (2) from a transport flow. The system includes grippers (3) which are attached in substantially equal distance therebetween to an endless loop pulling means for holding the signatures (2), and an actuating device (11) causing the grippers (3) to open, with the actuating device (11) displacing a lever arm (13) which is connected to the moveable gripper element (10), to a laterally spaced-apart guide rail (12).

Abstract: A sheet processing machine utilizes chain conveyors, each of which are provided with a plurality of chain gripper devices, to convoy sheets. As the sheet are conveyed, they are cut to proper size and are inspected. Each sheet is separated into several partial sheets which are then conveyed independently of each other to selectable stacks in a sheet delivery system.

Abstract: A collation method and apparatus that is immune from singularization faults which disrupt the collation process. Each signature is loaded into individual grippers of a power and free gripper conveyor system. Those grippers that experience a miss or a double are diverted out of the process stream. Only those grippers that carry one and only one signature are allowed to continue on in the primary signature queue. The grippers that continue on in the primary signature queue are re-queued into a sequential order which eliminates gaps in the queue. The collation machine accepts signatures from the downstream end of the signature queue as the singularization process continues to add signatures to the upstream end of the signature queue. The singularizer uses a track and diverter structure, where grippers without a signature are diverted to the diverter structure and grippers with a signature continue on the track to a collator.

Abstract: A conveyor (10) has a self-contained main conveyor line (12), a number of feed lines (14, 14') in the form of buffer lines and a return line (16, 16'). Each feed line (14, 14') is associated to a processing station (26, 26'). The feed lines (14, 14') are connected to the main conveyor line (12) by means of controlled switches (28) so that, viewed in the conveyor direction (F), any of the clamps (20) can be delivered to any desired processing station (26). This gives the device great flexibility and decouples the processing stations from the pickup of the pressroom products at the pickup station (24).

Abstract: A chain conveyor for transporting sheets in a printing press. The chain conveyor includes two conveyor chains disposed opposite one another and revolving together during operation, and at least one gripper bar extending in a direction transverse to and between the two conveyor chains. An expansion joint is provided to connect one end of the gripper bar to one of the conveyor chains and to allow movement of the gripper bar in the direction transverse to the two conveyor chains. The expansion joint may also allow rotational movement of the gripper bar. The expansion joint reduces wear of the conveyor chains by allowing the gripper bar to move.

Abstract: The holding elements (28), designed as hook-gripper elements (26), are driven in a circulating manner by means of a drive arrangement (44) in a plane at right angles to a stack (16) of printed products that have back margins (20). In the takeover section (46), the cantilever arm (36) of a hook-gripper element (26) comes to bear against the back margin (20) of the topmost printed product (14) of the stack (16). The hook-gripper element is then guided in a sliding manner on the printed product (14) in the direction of a stop, until the hook mouth (38) of the hook-gripper element (26) has seized the back margin (20). From the takeover section up to the transfer of the printed product (14) separated in this way from the stack (16), the direction of movement of the hook-gripper element (26) has a component toward the stop and a component away from the stack (16).

Abstract: A method and apparatus for processing and conveying a product stream includes a conveying belt entering a folder to grip products. The conveying belt comprises product grippers arranged thereon in an endless configuration. At least some of the grippers are selectively rotatable around an axis during movement of the conveying belt to allow for the signatures gripped to be converted into a leading corner configuration. If only a selected set of the grippers are rotated, a secondary stream of products may be formed.

Abstract: A guiding device for a freshly printed sheet has a sheet-guiding surface, which is located at a distance from an imaginary conveying surface. The sheet has a leading edge, which sweeps over the imaginary conveying surface along a sheet transport direction perpendicular to the leading edge of the sheet. The sheet-guiding surface is formed on a guide-plate arrangement and has blast-air openings. The sheet-guiding surface includes blast-air nozzles of a first nozzle configuration and of at least a second nozzle configuration. The blast-air nozzles of the first nozzle configuration produce air-jets that sweep over the sheets and are aligned with respect to the sheet transport direction. The blast-air nozzles of the second nozzle configuration produce rotational flows sweeping over the sheets.

Abstract: A sheet brake improves laying sheets off onto a stack in the take-off unit of a sheet-fed rotary printing press. The sheet brake is provided with a crank drive that generates a back-and-forth stroke by way of a synchronized drive mechanism at the rate traveled by the sheets. The rear portion of each sheet is forced by suction against a suction strip provided on the brake so that the sheet is braked while being stretched and then lowered onto the top of the stack. The suction strip has a groove arranged such that the sheet is braked and stretched as the suction strip works in conjunction with an operation of a take over gripper to accurately guide the sheet to the stack.

Abstract: A sheet inspection apparatus for a sheet-fed offset printing press includes an endless conveying unit, a plurality of gripper units, and an inspection unit. The conveying unit has a conveying path and a return path and conveys a sheet delivered from a printing unit. The gripper units are supported by the conveying unit at a predetermined interval along a sheet conveying direction to grip one end of the sheet. The inspection unit is arranged on an opposite side of the conveying path with respect to the return path to optically inspect a printed state of the sheet conveyed on the conveying path. The inspection unit is arranged at a position where an optical inspection operation for the sheet at an inspection position on the conveying path is not impeded by the gripper units traveling on the return path.

Abstract: The invention relates to a method and an apparatus for conveying a stream of printed products. The printed products are first conveyed along a first conveyor loop in a position in which they are oriented essentially tangentially to the conveying direction, and are transferred to a second conveyor loop. To facilitate the transfer, the printed products are brought into a transfer position, in which at least one region of each printed product is oriented at an angle to the tangential orientation.

Abstract: The device according to the present invention is primarily intended to be used for handling and conveyance of newspapers and magazines. The clamping devices of the conveyor (4) are designed as clamps, where the clamp is closed by spring loading and can be opened by actuating one of the two parts of the clamp. The arm is actuated by cams (7, 7A) which are mounted at the periphery of a wheel (8) which rotates synchronously with the conveyor. The cams are movable and a control system decides if each cam shall be in a position where it actuates or does not actuate the corresponding clamp. In a preferred embodiment of the invention the clamp and the device are symmetric having a plane of symmetry in the middle of the conveyor and in its direction of movement.

Abstract: An adjusting device for a gripper opening cam in a chain delivery of a sheet-fed printing press, the gripper opening cam being pivotally guided in a bearing and being connected by a linkage to one of a pair of threaded nuts of a combination of a lefthand and righthand thread of an adjusting shaft screwable into a fixedly supported other threaded nut of the combination, includes an adjusting motor with an electrical program controller programmable for adapting to parameters which vary as the printing press rpm runs up to and runs down from operating speed for automatically tracking the gripper opening cam, and a coupling operative in the adjusting device, the coupling being disposed between the adjusting motor and the gripper opening cam.

Abstract: Sheet delivery for a sheet-fed printing press having gripper systems arranged on conveyor chains or toothed belts revolvingly guided and driven by guide wheels, the gripper systems being activatable by a locally fixed control member for gripping sheets individually at respective leading edges thereof and for releasing the sheets in vicinity of a sheet pile, and including guideways for slidingly guiding the conveyor chains, includes rollers with roller bearings fastened to the conveyor chains or toothed belts, the rollers, in regions of increased load, being movable into separate roller guides arranged on a frame of the printing press, for transmitting to the printing-press frame forces which act upon the conveyor chains or toothed belts.

Abstract: An apparatus for providing printed products to a gatherer, including a product supplier for feeding printed products, a product separator positioned to receive printed products from the product supplier and to separate the printed products into a separated stream, a printer positioned adjacent to the separated stream and positioned to print on the separated printed products, and a gripper conveyor positioned to receive the separated printed products from the printer and to form a shingled stream.

Abstract: An apparatus for gripping and conveying sheet-like products includes a single or multiple conveying tracks for supporting a gripping device, or a series of gripping devices linked in the form of a chain. The gripping device has a support moving within or along a conveying track. The gripping device engages sheet-like products, and includes at least two grippers which are actuatable independently from one another. The grippers allow different portions of the sheet-like products to be conveyed to different locations.

Abstract: A paper guide apparatus for a sheet-fed offset printing press includes a conveying unit, a gripper unit, a paper guide member, and an inspection unit. The conveying unit conveys a printed sheet delivered from a printing unit. The gripper unit is supported by the conveying unit for gripping one end of the sheet. The gripper unit has a plurality of sets of grippers and gripper pads. The paper guide unit is arranged along a sheet conveying route to guide the sheet which is being conveyed with a guide surface arranged to be substantially flush with the gripper pads. The paper guide member has a plurality of suction holes for drawing the sheet on the guide surface by suction and a plurality of grooves formed on traveling routes of the grippers. The inspection unit inspects a printed state of the sheet which is conveyed while being drawn on the guide surface of the paper guide unit by suction.

Abstract: Sheet delivery in a printing press, wherein, at acceptance of a sheet, a gripper bar of the delivery has a speed which is increased in comparison with a sheet-surrendering or transferring gripper bar includes delivery chains, and a drive for driving the chains so as to increase the speed of the gripper bar of the delivery at an instant at which a sheet is transferred to the gripper bar of the delivery by the sheet-surrendering gripper bar.

Abstract: Gripper bar for a delivery of a printing press, the gripper bar being carried at respective ends thereof by transport chains and having a multiplicity of grippers with gripper fingers for transporting sheets includes a hollow profiled member having a boxlike profile wherein a gripper shaft is receivable, the boxlike profiled member being formed with lateral openings through which the gripper fingers of the grippers extend.

Abstract: A clamp for retaining sheet-like articles having clamp jaws pivotably mounted on a spindle and retained in a clamping position by a closure device. The closure device is formed by carrying arms which have a clamping body. The two clamping bodies are located in a latch-in depression formed on the outer side of the clamp jaws and exert a closure force on the two clamp jaws. By virtue of the closure device being pivoted up from the clamping position into a release position, the clamp jaws are released and pivot into the release position.

Abstract: An apparatus for delivery of sheet-like products is provided which includes a reorientating conveyer 14 coupled to deceleration unit 6, the deceleration unit 6 for receiving signatures 5 from a product forming device such as a folding or a cutting cylinder. The deceleration unit 6 slows down the signatures 5 from a single spaced configuration to an overlapped shingled configuration. The reorientation conveyer 14 grips signatures in an overlapped shingled configuration with grippers 17, the grippers 17 having a pitch 16. Since the deceleration unit 6 does not release the signatures 5 until after the grippers 17 are engaged, control over the signatures is maintained during the transfer. In the reorientation conveyer 14, the grippers 17 rotate the signatures into a spine leading formation while maintaining control over the signatures 5.

Abstract: Continuously accumulating printing works products are transported, over a comparatively long distance in a manner which consumes minimum manufacturing facility floor space, by being serially fed to clock-pulse controlled grippers of a continuously driven conveyor. The grippers grasp the products in the area of their leading edges and subsequently transport the products in tile-formation over a defined distance to delivery apparatus.

Abstract: Method of introducing an auxiliary sheet pile carrier above a main sheet pile to be removed, the introduction being effected during uninterrupted feeding of additional sheets above the main sheet pile in a sheet travel direction and in synchronism with the travel of a sheet to be deposited, includes controlling respective drives at a sheet delivery by a control device which determines actual data of a printing press, so that the auxiliary pile carrier traverses a velocity profile identical with a velocity profile of the sheet to be deposited in order to avoid relative movement between the auxiliary pile carrier and the sheet to be deposited.

Abstract: A device for controlling the gripping action of grippers on a plate-like workpiece at the end of the feeding table of a machine that processes sheet-like workpieces has an arrangement for controlling the upper mechanisms for positioning, respectively, the gripper bar, the sheet pull-down appliance, and a stop-carrying tablet and a mechanism for opening the grippers. This device includes a horizontal common axle arranged to extend crosswise to the sheet travelling direction and mounted for rotation around its lengthwise axis so as to be able to be oscillated through a predetermined angle by a single lower drive arrangement consisting of a cam, a lever follower and a pull linkage. Each lateral end of this common axle carries a symmetrical series of articulated arms and cam which actuate the above-mentioned upper mechanisms.

Abstract: Device for delivering printed products from a fan arrangement for forming a shingled printed-product stream, the device including an endless chain having a revolving path coordinated with the fan arrangement, so that the chain continually pushes, out of pockets of the fan arrangement, printed products received in the pockets, for forming the shingled printed-product stream, further including a holding arrangement for holding the printed products in the pockets, the holding arrangement being formed of grippers disposed on the chain.

Abstract: A system for conveying flat products, such as folded newspapers. The products are received in imbricated formation on a first conveyor and passed to an intermediate or transfer conveyor, the receiving and of which is at a lower level than the discharge end of the first conveyor. The transfer conveyor accelerates the products to a conveyor which has gripping members that receive the leading edges of the products and which moves at a slower speed than the transfer conveyor. The acceleration of the products on the transfer conveyor assures that the leading edges are received within the gripping members.

Abstract: A conveying device for feeding sheet-like products to a processing machine for printed products having carrying elements that rotate in the direction of rotation (U) along a self-contained rotational path. A carrying arm and a link member are pivoted on each carrying element. The clamping jaws, which form a clamp and are prestressed in the closed direction, and are pivotally mounted on the carrying arm. The first clamping jaw being connected to the link member in order to pivot the clamp. The second clamping jaw is connected to an opening roller with which an opening guide interacts to open the clamp. The pivot position of the carrying arms and the position of the link member can be controlled independently of one another by the control device, with the result that the clamp may also be pivoted about its pivot on the carrying arm independently of a movement of the carrying arm. The conveying device is suitable for depositing folded printed sheets in a straddling manner on the rest of the processing machine.

Abstract: Individual sheets are singled out in a delivery of a sheet-fed rotary printing press. The delivery has a chain delivery with gripper bars extending transversely to the sheet-transport direction. The gripper bars are disposed on revolvingly driven transport chains and carry spaced apart sheet grippers disposed side by side. The sheet grippers grip the leading edges of the sheets and slave them to a main sheet pile. The gripper release is subject to an adjustable control for delayed sheet release, so that selected sheets may be transported beyond the main sheet pile. Revolvingly drivable suction tapes suction-grip the sheets which are released by the grippers with the delay, and they transport those sheets in the transport direction across and beyond the main sheet pile and onto a single sheet depository. The sheet depository is movably disposed in or on the printing-press frame. The suction tapes have upper suction surfaces at a raised position which extend between the sheet grippers.

Abstract: A method and apparatus that uses chain delivery system to deliver printed sheets to one of two sheet stacks is disclosed. The sheets are grasped by chain gripper systems and are transported along an upper chain strand. A transfer cylinder is positioned in the path of sheet travel between the two sheet stacks. Sheets destined for the second sheet stack are removed from the upper chain strand by the transfer cylinder and delivered to the second sheet stack by a lower chain strand.

Abstract: Sheet guiding cylinder of a printing press includes a cylinder casing rotatable about an axis of rotation, and having an outer cylindrical surface defining a skeletal framework; the skeletal framework being formed by guide vanes extending in longitudinal direction of the sheet guiding cylinder and having a curved guide vane profile disposed in planes perpendicular to the axis of rotation, the guide vanes beginning from respective locations radially inward from the outer cylindrical surface and terminating substantially radially in an imaginary cylindrical envelope surface enveloping the outer cylindrical surface and being symmetrical with the axis of rotation.

Abstract: Mounting arrangement of the bars supporting the grippers in a map-making or security-paper printing machine, wherein each bar consists of a pair of parallel tubular rods and is supported at its opposite ends on two transport chains slidable along two parallel fixed guides, each bar end being mounted on a pair of pins fixed to the chains and projecting therefrom towards the bar. Between the bar ends and the pairs of support pins there is interposed an intermediate support, formed by two elements adapted to slide telescopically one in respect of the other in a direction parallel to the sliding plane of the chains and lengthwise of the chains, one of these elements, in the form of a plate, comprising two transverse bores to house the pins of the chain, while the other element, in the form of a slide, is fixed to an end of each bar and is slidably mounted on the plate.

Abstract: A sheet-conveying drum for use between units in a printing machine is provided with a plurality of gripper bridges arranged substantially circumferentially symmetrically on the drum surface. The gripper bridges hold the paper to the drum and include gripper impact strips that are adjustable radially relative to the drum in order to accommodate printing materials of different thickness. Each gripper impact strip is adjusted by means of a positioning device that is arranged on the drum radially inward of the gripper impact strip and mounted so that it can move axially relative to the drum and cam the gripper impact strip radially. The axial movement of each positioning device is brought about by an actuating device which is preferably a pneumatic cylinder and is disposed on the body of the drum at the free end of each positioning device. An energy supply sequentially actuates each actuating device resulting in the piston of each cylinder either extending or retracting.

Abstract: A process and an apparatus for the typographical labeling of folded printed products, such as folded individual sheets or folded publications, on an inner side, in particular in the border region of the inner side, is designed for carrying out this typographical printing in folded printed products which are conveyed with their fold approximately at right angles with respect to the conveying direction, and can thus be used with the conveying systems which are conventional nowadays in printing works for conveying printed products in the form of imbricated streams. The front and rear halves of the respective folded printed products are moved apart via an opening device, with the result that a printing head can carry out the desired typographical-labeling operation on the inner side of the folded printed product.

Abstract: Device for conveying a sheet along a conveyance path to a sheet pile having a conveyor for gripping the sheet at least at one edge thereof, a drive connected to the conveyor, fixed guides for the sheet, a pneumatic device disposed in cooperative proximity with the guides, and a control or regulating device connected to adjustment elements of the conveyor, the drive and the pneumatic device, includes at least one sensor disposed in the conveyance path of the sheet for detecting movement of the sheet, the sensor being connected to the control or regulating device.

Abstract: A delivery of a sheet-processing machine for transporting a sheet along a sheet-conveying path to a stacking device, includes a sheet braking device engaging, during operation, with an underside of a sheet and retarding it by suction belts or the like. A suction region is adjacent to and upstream of the sheet braking device. A suction device applies suction, in the suction region, to the underside of the sheet. A brake carriage carries the sheet braking device and the suction device and is displaceable between selective positions within a segment of the path. A stationary first guide device has a first sheet guide surface segment set back upstream from the sheet braking device. A second guide device has a guide element displaceable by the brake carriage and forming a second sheet guide surface segment between the sheet braking device and the first sheet guide surface segment. The second segment, together with the first segment, form a combined sheet guide surface having a telescopically variable length.

Abstract: Adjusting device for a gripper opening cam in a chain delivery for delivering sheets in a sheet-fed printing press, wherein grippers disposed on gripper carriages of endlessly revolving chains have a cam roller running onto the gripper opening cam for opening the grippers, includes an adjusting shaft journalled in a press frame and having an axis, a lever arm swivellable about an axis transverse to the axis of the adjusting shaft and articulatingly connected to the gripper opening cam, and a linkage for converting rotation of the adjusting shaft into swivelling of the lever arm, the linkage being formed of a combination of a left-hand and a right-hand thread, the adjusting shaft being formed at opposite ends thereof with respective spindle threads of mutually opposite pitch, a spindle nut fixedly disposed on the press frame and a spindle nut connected to the lever arm, the spindle nuts being formed with threads of mutually opposite pitch, the adjusting shaft being screwable by the respective spindle threads t

Abstract: There are provided an operating mechanism 5 having an operating portion, for example, freely rotatable roller 4, which is displaced to a setting position Ps of pressure-contacting to the plate belt 2 by a spring member 3 and a releasing position Pr spaced apart from the plate belt 2, a fore clamping mechanism 8 supported in a seasaw manner on widthwise supporting shafts 6 . . . disposed on the plate belt 2, and having clamping portions 7c . . . for clamping a fore portion of the plate S at one end thereof, operated portions 7m . . . pressed by the freely ratable roller 4 at the setting position Ps, at the other end thereof, and fore clamps 7 . . . pressed in a clamping direction by spring members 9 . . . , and a rear clamping mechanism 12 supported in a seasaw manner on a widthwise supporting shaft disposed on the plate belt 2 at a rearward of the fore clamping mechanism 8, and having a clamping portion 11c for clamping a rear portion of the plate S at one end thereof, operated portions 11m . . .

Abstract: A combination of a bar and a pair of fastening devices, which are integrated into a chain and replace a link of the chain on each end of the bar, includes an outer vertical plate portion and an inner vertical plate portion interconnected by an inner connection to form spaces for receiving an upstream axle and a downstream axle of the chain links, each axle being eventually covered by a meshing cylinder. The bar has a finger protruding from each end. The inner plate portion is completed on its inner face by a pair of spaced knuckles which receive a portion of the bar therebetween and are connected to the bar by a crosswise linking axle extending between the two knuckles and through the bar. The outer and inner plate portions each have an aperture for receiving the rigid finger which extends from the end of the bar.