Abstract: In a system of plurally recirculating a set of document sheets for precollated copying wherein the document sheets are repeatedly individually fed seriatim from the bottom of an overlying stack thereof for copying with registration and returned to the top of the stack for restacking in a tray having a support surface, a rear guide and two edge guides, an improvement is disclosed that includes a straight ramp attached to one of the edge guides so that document sheets returned to the support surface will lie flat against the edge guide and thereby provide a positive registration position along the junction between the ramp and the rear guide thereby reducing the possibility of mis-registration due to bending of the document sheets during feeding and recirculation.

Abstract: A radiographic system for obtaining a visible radiation image by use of a stimulable phosphor sheet including a spot shot apparatus having a transport system for transporting the stimulable sheets from a supply magazine to a receiving magazine through a park and exposure station at which radiation is directed to the sheets. A plurality of the sheets are stacked in a supply magazine with the side of the sheets opposite the side having the phosphor layer facing upward. The sheets are sequentially transported to the exposure station for a radiographic imaging, and then to a receiving magazine by a transport system.

Abstract: A top vacuum corrugation feeder employs a vacuum feedhead working in conjunction with an air knife to feed sheets from the top of a stack. The feedhead is valveless and has a vacuum applied thereto during the entire feed cycle in order to increase reliability and decrease minimum feed speed. The top vacuum corrugation feeder includes fluffer jets and vectored auxiliary fluffer jets in order to assist the air knife in separating severely downcurled sheets for feeding.

Abstract: A card and pamphlet dispenser or vendor box comprising a rather flat vertically elongated box with a rearwardly sloping bottom wall spaced slightly from the rear wall of the box to define a transverse slot through which the cards or pamphlets may be withdrawn singly; the vendor box further comprises a mounting structure or hanger having a rear plate, a spacer plate, and two flanges which are adapted to engage a variety of common supports so that the box may be mounted from them.

Abstract: A bottom feeder for copy paper feeding has means for imparting a curvature to the sheets, the curvature being in the direction the sheets will be withdrawn. The curvature provides transverse rigidity to permit lifting weight of stack off the bottom sheet. This facilitates withdrawing the sheets one at a time from the bottom of the stack.A curved paper tray imparts a curvature to the paper. A pair of holding clamps are provided, one on either side of the stack of paper, which are partially withdrawn from the sides of the paper stack so that paper may be added to the stack. When sheets are to be fed, the clamps which comprise a pair of plates having a friction material on the paper facing side thereof are moved in to engage the sides of the stack of paper. An arrangement is provided to thereafter lower the paper tray slightly from the bottom of the stack, or lift the clamps and the curved paper stack. In either event, the pressure of the stack weight is now removed from the bottom sheet.

Abstract: The device comprises a conveyor assembly for continuously feeding edge arranged signatures and provided with side guiding members for restraining and guiding the signatures at the end portion of the side guiding members in the signature feeding direction there being provided a narrowing width region for bending the signatures with a convexity facing the signature a feeding direction, feeding belt being further provided for picking the bent signatures and loading them, in a turned over condition, on a conveyor.

Abstract: A method of assembling a plate-fin heat exchanger including the steps of providing a plurality of like substantially straight elongated plate-fins with spaced holes, bowing the plate-fins to increase their stability and accumulating a plurality of bowed plate-fins in stacked contiguous relationship to provide a bundle, providing a plurality of elongated substantially parallel tubes spaced from each other substantially the same distance as the spaced holes and oriented substantially perpendicularly to the bundle of plate-fins, transferring the bundle of bowed plate-fins to a carriage, straightening the bundle of contiguous plate-fins from the bowed condition to a straightened condition, and transferring the bundle of plate-fins in the stacked contiguous straightened condition onto the plurality of elongated substantially parallel tubes.

Abstract: A bottom sheet separator-feeder for separating and forwarding sheets seriatim from the bottom of a stack of sheets includes a stack tray and endless vacuum belts extending through the front end of the tray for acquiring and advancing the bottom sheet, the belts extending across a support surface having vacuum ports therein for applying a negative pressure at the back of the belts. In order to reduce unwanted vacuum effects upstream of the vacuum ports, a transverse lip extends across the support surface upstream of the vacuum ports.

Abstract: The present invention is characterized in that the separating hook and hopper roller are adapted to be mounted on sheet guides of the hopper, one end of said sheet guide being adapted to be engaged in a groove of a pressure sleeve so as to make said pressure sleeve movable along said end. A movable shaft is adapted to pass through said pressure sleeve, and a spring is provided between said pressure sleeve and said sheet guide which biases the pressure sleeve to the hopper roller side, whereby at least the hopper roller, separating hook, pressure sleeve and spring at the print line end are made movable with the sheet guide being moved; thus by manually moving only one of the sheet guides, the sheet guides are made to meet right and left ends of the sheet, and the hopper roller is also made to select the correct position of the symmetrically central position of sheet width.

Abstract: A modular envelope feed mechanism which may be used with a cut sheet feeder attachment for high speed printers or the like is disclosed. Envelopes are more reliably fed and separated because they are urged toward a pair of separators at the separation station with uniform force by a pressure plate containing a pivotable member provided with resilient pads positioned in alignment with the separators.

Abstract: A sheet feeding apparatus including an air flow sheet separation mechanism for feeding individual sheets of paper from a stack of sheets slanted slightly from the vertical. A flow of air established through a plurality of resiliently surfaced feed wheels draws individual sheets seriatim from the nearly vertical stack of sheets into driving contact with feed rollers located adjacent the upper edge of the stack of sheets and mounted for rotation about a horizontal axis. Each sheet is then drawn upwardly by frictional contact with the feed rollers into the nip of a pair of opposed feed rolls which are mounted for rotation about a horizontal axis parallel to the feed wheel axis. The sheet is then delivered by conveyors to a sorting mechanism or other sheet fed device.

Abstract: An apparatus is provided for separating and dispensing a single film sheet from a stack of the sheets.

Abstract: Electrophotographic plain paper copier apparatus of a highly compact nature in which the copier is modular in construction and has a removable magazine to hold the paper supply in an arcuate disposition. A substantial number of the components and parts of components of the copier are located within the general quadrant subtended by the magazine thereby shortening the overall length of the copier. The copier features a removable master belt support, a compact projection system, the magazine mechanism and means to couple the same into the operating system of the copier and a novel illumination adjusting means.

Abstract: A device and a method for dispensing articles in the form of sheets from a supply. In order to dispense the articles, for example banknotes, from a supply in the form of a stack of banknotes, the outermost banknote of the stack is first displaced in one direction so that the banknote is made to form a bulge after its resistance to buckling has been overcome, whereupon the banknote is displaced in the opposite direction for being fed out from the dispensing device. The banknote is displaced by means of a withdrawal roller of appropriate shape, wherein the peripheral surface of said roller for example may be concave or convex and/or may be provided with helical projections for affecting the resistance of the banknote to buckling. In consequence of said bulge being formed in the banknote the latter will be effectively separated from the immediately following banknote of the stack, said separation being facilitated additionally by the design of the withdrawal roller.

Abstract: A thin sheet feeding apparatus has a bending mechanism to curve a pile of thin sheets bundled by a belt member and a mechanism to sequentially feed at least one thin sheet from the uppermost thin sheet from the curved concave pile of the thin sheet in the predetermined feeding direction.

Abstract: An automatic document handler adapted to receive a stack of documents to be copied for feeding the documents seriatum to the platen of a copy machine and returning the copied documents to the stack. The combination of a vacuum-belt document corrugator/feed assembly and an air knife is provided to assure positive feeding of each document to the platen without misfeeds or multifeeds.

Abstract: A document feed mechanism for feeding original documents to a copier imaging station. A bottom feed shingler wheel generates a shingled stack of original documents in a tray having a crowned shape, the tray crest being located forward of the shingler wheel. The shingled stack is supplied to a nip formed by an intermittently operated feed roll and a restraint roll which is rearwardly biased via a magnetic hysteresis slip clutch. The normal force on a sheet in the nip and the rearward bias force of the restraint roll are specifically controlled. The feed and restraint rolls intermittently supply single sheets to an imaging station feed mechanism.

Abstract: An automatic document handler adapted to receive a stack of a stack of documents to be copied for feeding the documents seriatim to the platen of a copy machine and returning the copied documents to the stack. A combination vacuum-document separator in conjunction with an air knife and a document tray having a "U" shaped pocket with ramps formed on both sides thereof is provided to assure positive feeding of various sized documents without misfeeds or multifeeds.

Abstract: A feeder table for laminar stacked objects has a thrust member for supplying stacks to a processing machine. An arcuate slide path for the stacks extends between the table and the machine. The thrust member follows the arcuate path to separate the objects by deforming the stack. The stack is placed against a stop member for supply to the machine.

Abstract: A sheet transporting magazine for automatic typewriters or the like with a three point bar structure for arching a stack of sheets in the conveyance direction while disposed in the magazine to prevent the sheets from canting laterally in the magazine.

Abstract: A document handling and counting device in which documents arranged in a stack within an infeed tray are bottom-fed through a document stripping and separating means so as to be fed at spaced intervals and in a one-at-a-time fashion through a document processing stage whereupon the documents are then restacked in their original order. Document stripping and separating is performed by cooperating stripper means and feed means imparting counteracting forces upon documents fed therebetween.

Abstract: A paper tray assembly for paper reproduction systems comprising a flat base, an upwardly extending backwall, paper guides and guide strips. Rectangular recesses are located in the corners of the base adjacent the backwall and coinciding recesses are found in the backwall. Longitudinal slots are contained in the rectangular recesses parallel the backwall. A paper guide is provided having floor, sidewall and endwall portions adapted to fit in the recesses. Transverse guide strips extend over the floor of the paper guide and across the base. The floor of said paper guides and said guide strips contain apertures which are in alignment with longitudinal slots. Fastening means are provided to fit through said apertures and slots thereby securing the paper guide and transverse guide strips in any desired position along the length of the longitudinal slot.

Abstract: A sheet-feeding apparatus for separating and feeding sheets of paper, cardboard, metallic and plastic material and the like individually from a stack of such sheets is described. The apparatus as described is provided with a curved sheet-receiving chute for containing and temporarily storing a stack of sheets. A chamber having an apertured movable wall is provided adjacent the stack of sheets. The movable wall is positioned and freely movable to contact the top sheet of the stack. A low-pressure blower is provided for evacuating air from the chamber and drawing the top sheet into sealing contact with the movable wall about the aperture. Sealing of the aperture creates a partial differential pressure which moves the wall, reducing the volume of the chamber and removing the top sheet from the stack. Means, such as a roller, is also provided within the chamber. The roller extends slightly through the aperture to contact the sheet once the sheet is removed from the stack.

Abstract: The printed sheet guide mechanism in an offset printing press comprises a stay provided parallel to a delivery roller which is in frictional contact with the eject rollers to rotate therewith, and a pair of guide members each of which has a slanted or curved guide flap. Each of the guide members is secured to the stay so that they are adjustable in their lateral movement, and is also so adapted as to hold at its both edges the printed sheet delivered out passing between the eject rollers and delivery rollers. The guide flap provided in each guide member is designed to bend or curve both edges of the printed sheet to give stiffness thereto.