With Means To Bow Sheets Patents (Class 271/209)
  • Patent number: 4720728
    Abstract: The invention provides an improvement in operability in handling sheets such as originals or recording paper. A sheet exhaust receptacle of the invention inverts a sheet exhausted from a convey device in a direction opposite to the exhaust direction and guides the leading end of the sheet to an insertion side of the convey device. Handling of exhausted sheets is easy and the overall apparatus can be rendered compact in size.
    Type: Grant
    Filed: September 15, 1986
    Date of Patent: January 19, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masahiro Kando
  • Patent number: 4707157
    Abstract: Matrix printers exhibit the tendency to develop electrostatic charges on account of various movements in sliding contact between the print medium such as paper on one hand and the transport device and print styli or hammer on the other hand. In order to eliminate these charges the traction means for transporting the paper is driven by a drive shaft which is held in electrical insulation from the transport device but is electrically connected through a paper support structure which is in turn is electrically connected to a connecting rod completing a frame structure for the transport device.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: November 17, 1987
    Assignee: Mannesmann AG
    Inventor: Wolfgang Hauslaib
  • Patent number: 4699366
    Abstract: There is disclosed a simplified sheet feeding system for a recording apparatus such as copier. A sheet is pinched between ribs projecting on a sheet guiding face and driven feed rollers which are movable in position and partly overlap with the projecting ribs when the sheet is absent.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: October 13, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Kashimura, Tetsuo Kimura
  • Patent number: 4696463
    Abstract: An automatic original sheet feeding apparatus for carrying original sheets mounted on an original sheet mounting table to a predetermined work position and then through an ejection roller to an original sheet receiver, successively, is disclosed, in which the ejection roller is braked while ejecting the original sheet to thereby eject said original sheet onto a region in the vicinity of the ejection roller without substantial inertia.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: September 29, 1987
    Assignee: Ricoh Company, Ltd.
    Inventors: Yukitaka Nakazato, Kenji Hashimoto, Takashi Taruki
  • Patent number: 4676046
    Abstract: A bale wrapping mechanism for wrapping a large round bale with a wrap material such as plastic sheet material or net, is mounted to the rear of a bale discharge gate. Drive rolls are located rearwardly of the gate and are selectively drivable for dispensing wrap material onto the rear end of a guide pan extending beneath and engaged with a portion of bale-forming belts extending between lower rear and lower front belt support rolls carried by the discharge gate. A guide finger assembly is secured to the front of the pan and includes a plurality of fingers located in gaps between the bale-forming belts and including forward end portions curved arcuately about the lower front belt support roll for directing wrap material about the roll and into a pinch point defined between the belts and a bale desired to be wrapped by the material.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: June 30, 1987
    Assignee: Deere & Company
    Inventors: Michael J. Verhulst, Henry D. Anstey
  • Patent number: 4669720
    Abstract: An ejector unit for machines for handling signatures and similar flat articles comprises a first rotary body defining the output end of a conveyor on which a substantially continuous flow of articles to be handled is fed, a stop member selectively orientable between a rest position and an operating position in which the member stops the flow of articles adjacent the output end of the conveyor, and two second rotary bodies which can be rotated by the first rotary body to carry out a shaping (ribbing) action on the articles handled. Third rotary bodies interposed between the first rotary body and one of the second rotary bodies are movable between a first operating position in which motion is transmitted from the first rotary body to the second rotary bodies and a second operating position in which the transmission of rotary movement between the first rotary body and the second rotary bodies is prevented.
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: June 2, 1987
    Assignee: R.O.M. S.r.l.
    Inventor: Domenico Rosati
  • Patent number: 4667949
    Abstract: In a printing machine or the like wherein sheets are delivered seriatim into a receiving tray whereat the sheets come to rest by gravity onto a stack in the tray, a device for facilitating stacking the sheets into the tray at high speed. Each sheet is directed from the machine in a path outwardly over the tray. Guide surfaces act against a lead end of the sheet to prevent upward escape of the sheets from the path. A deflecting mechanism diverts each sheet downwardly into the tray to clear the path for a succeeding sheet. A stop plate is provided beneath the deflecting mechanism for acting against a trail end of each sheet to control and guide the sheet into alignment onto the stack in the tray.
    Type: Grant
    Filed: May 26, 1983
    Date of Patent: May 26, 1987
    Assignee: AM International, Inc.
    Inventors: Eber L. Goodwin, James E. Zeigler
  • Patent number: 4664368
    Abstract: A device for collecting sheets comprising a collecting tray and a conveyor roller for feeding sheets into the tray. The collecting tray comprises a baseplate having a distance between abutment surfaces which corresponds to a dimension of the sheets to be collected, preferably the length. The middle part of the baseplate is higher than the side parts. An abutment strip which contacts and stops the leading edge of a sheet fed into the tray is connected to an edge of the baseplate and has a surface which is cylindrically curved, the centerline of which coincides with the centerline of the conveyor roller. A wall plate is connected to the opposite edge of the baseplate and also has a cylindrically curved abutment surface, the centerline of which coincides with the line of intersection between the baseplate and the abutment strip.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: May 12, 1987
    Assignee: Oce-Nederland B.V.
    Inventors: Jan M. M. Bouwens, Ferdinand M. H. F. Hooghiemstra, Leonardus Van Ruiten
  • Patent number: 4662626
    Abstract: A paper document pocket for receiving and stacking sorted documents from a high-speed reader sorter used in the banking industry and similar applications. The pocket is designed to stack in columns paper documents of various sizes and paper weights in sequential order without producing paper jams.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: May 5, 1987
    Assignee: BancTec, Inc.
    Inventors: Rex W. Shores, Robert H. Martin, George Maclean
  • Patent number: 4660819
    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.
    Type: Grant
    Filed: September 27, 1984
    Date of Patent: April 28, 1987
    Assignee: Xerox Corporation
    Inventors: Carmen Allocco, Jr., William R. Burger
  • Patent number: 4657241
    Abstract: A device for use in conjunction with a compartmented distribution line for flat articles, such as letters, which arrive in succession over a conveying path. The device comprises a succession of stacking compartments arranged one behind the other to which the flat articles are supplied by switches separately associated with the individual compartments. On the conveying path, closely before each individual stacking compartment, there is provided a rubber elastic roller-type attachment which faces the upper edge of each flat article against a guide sheet disposed opposite the attachment.
    Type: Grant
    Filed: January 15, 1985
    Date of Patent: April 14, 1987
    Assignee: Licentia Patent-Verwaltungs-GmbH
    Inventor: Werner Frank
  • Patent number: 4648591
    Abstract: An apparatus for pocketing documents in vertically-aligned pockets. The apparatus includes a frame and slides for mounting the frame for reciprocal movement between a home position and an extended position relative to the apparatus. A plurality of vertically-aligned, pocket members is mounted on the frame for selectively receiving documents to be pocketed. A transfer station, having first and second track members, receives a document therebetween, with the first track member being mounted on the frame for movement therewith. A first transport apparatus is used to move a document in a first direction to said transfer station, and a second transport apparatus is used to move a document in a second direction from the transfer station to the plurality of pocket members. A transfer apparatus is used to transfer a document at the transfer station from the first transport apparatus to said second transport apparatus.
    Type: Grant
    Filed: June 17, 1985
    Date of Patent: March 10, 1987
    Assignee: NCR Corporation
    Inventors: Miroslav S. Osmera, Anton Bella, Fredrik L. N. Kallin, Edward R. Evans
  • Patent number: 4640505
    Abstract: A document guide mechanism having an upstream end, a downstream end, and a feeding line therebetween. A cupping device including a cupping rib provides stiffness to the documents as they are moved along the feeding line from the upstream end towards the downstream end where the documents are stacked. A flexible band having predetermined parameters is used to form a "wave" which travels along the feeding line to move the trailing edges of documents already stacked away from the feeding line to provide an entrance for the leading edge of a document being moved along the feeding line towards the stacked documents.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: February 3, 1987
    Assignee: NCR Corporation
    Inventors: Dale L. Placke, Donald L. Weeks
  • Patent number: 4619452
    Abstract: A photographic print sorter has a series of print slides along which the photographic prints are driven by drive rollers. Deflectors which are movable into the flow path are positioned between the print slides selectively deflect the prints into good, reject and remake print trays. Each print slide has a recess below each drive roller. The radius of each drive roller is betwen about 0.005 inches and about 0.045 inches greater than the distance from the axis of the drive shaft to the transport plane defined by the top surface of the print slide. This creates an interference fit between the drive rollers and the photographic print as the print is driven over the print slide.
    Type: Grant
    Filed: June 21, 1984
    Date of Patent: October 28, 1986
    Assignee: Pako Corporation
    Inventors: Charles L. Euteneuer, Robert E. Diesch
  • Patent number: 4618136
    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.
    Type: Grant
    Filed: April 24, 1984
    Date of Patent: October 21, 1986
    Inventors: Giorgio Pessina, Aldo Perobelli
  • Patent number: 4588180
    Abstract: A loader for box-type feeders of packaging machines, bookbinding machines and the like, in which the products are loaded into a feed channel with an inclined base formed by a conveyor belt, to be brought into contact with a counteracting plate. Sucker arms cyclically withdraw one product at a time and transfer it to wheels provided with grippers which insert the product between pairs of belts by means of which the product is transferred until it discharges into the feeder box. Feeler elements cyclically determine the thrust of the products in the feed channel and enable the conveyor belt to advance through one step when the thrust is smaller than a predetermined value, whereas they prevent said advancement when the thrust is greater than said value.
    Type: Grant
    Filed: April 2, 1985
    Date of Patent: May 13, 1986
    Assignee: SITMA Societa Italiana Macchine Automatiche S.p.A.
    Inventors: Aris Ballestrazzi, Lamberto Tassi
  • Patent number: 4560157
    Abstract: A device for transporting individual sheets to or from a magazine housing containing the sheets in a stack, particularly useful in x-ray installations, includes a threaded rotary screw member disposed within the magazine containing the stack of sheets for raising and lowering the sheet stack within the magazine and individually handling the uppermost sheet in the stack for transport to or from the magazine. A sheet transport is also provided comprising drive rollers disposed in a lateral plane overlying the sheet stack and running rollers connected to an upper end of the rotary screw member for movement in a lateral plane directly beneath the drive rollers, such that the running rollers may be disposed between the bottom circumferential portions of the drive rollers to form a sheet transport nip between the corresponding rollers.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: December 24, 1985
    Assignee: Siemens Aktiengesellschaft
    Inventor: Jakub Hirschberg
  • Patent number: 4522387
    Abstract: A device for stacking sheets comprises several disks arranged adjacent to each other on a driving shaft, the disks having spiral slots running from the outside towards the inside. The spiral slots of the disks overlap in an axial direction and together form a pocket into which the sheets conveyed. In order to guarantee trouble-free stacking of the sheets, the spiral slots of adjacent disks are staggered at least in the inner area of the stacker. Therefore, almost all the kinetic energy of a sheet which is inserted into the shot is issipated by frictional and flexing. The spiral slots of one or more disks may additionally be provided with elastic boundary walls.
    Type: Grant
    Filed: August 9, 1983
    Date of Patent: June 11, 1985
    Assignee: GAO Gesellschaft fur Automation und Organisation GmbH
    Inventor: Karl Leuthold
  • Patent number: 4469319
    Abstract: In a sheet stacking apparatus, especially a recirculating document handler for recirculating document sheets for precollation copying at a copier platen to and from a stack in a document tray without obstructing access to the document tray, with restacking edge guides repositionable to accommodate stacking different sheet sizes and a restacking feeder for restacking the document sheets in the tray within the restacking edge guides by feeding each document in over the top of the stack from one edge and releasing the document to restack, there is provided automatically varying corrugation restacking apparatus enabling controlled restacking for recirculative copying of large flimsy documents such as Japanese B4 size sheets compatibly with normal document sizes having sheet corrugating members repositioned by movement of a repositionable restacking edge guide into a position to restack such large sheets and automatically providing in coordination therewith additional sheet corrugation in response to the flimsines
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: September 4, 1984
    Assignee: Xerox Corporation
    Inventors: Frank J. Robb, Fred F. Wilczak
  • Patent number: 4466607
    Abstract: A device for inverting a sheet includes an input and output transport means and a sheet receiving tray. Sheet deflectors are provided to deflect portions of a sheet as it leaves the input transport means and moves into the tray. A reversal drive arrangement, including a drive roller within a vacuum plenum, contacts a sheet supplied to the tray and moves the sheet into engagement with the sheet output transport means. This arrangement adds beam strength to a sheet entering the tray and permits a second sheet to be supplied to the tray prior to complete removal of the previously inverted sheet.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: August 21, 1984
    Assignee: The Mead Corporation
    Inventors: Albert R. Clark, William A. Ernst, Svetislav Mitrovich, James E. Self
  • Patent number: 4445681
    Abstract: Two stop or impact members which are situated opposite one another with respect to grippers of a conveyor device are used for detaching or removing the printed products out of their product formation. In their effective position these stop members project into the conveying path of the printed products. The printed products released by the grippers impact against the stop members and under the action of their own weight drop downwards. Viewed in the conveying direction the printed products are folded or bent into a substantially saddle-like configuration forwardly of the stop members, resulting in stiffening of the thus folded printed products, and after they impact against the stop members they can fall downwardly along a straight path.
    Type: Grant
    Filed: August 28, 1981
    Date of Patent: May 1, 1984
    Assignee: Ferag AG
    Inventor: Walter Reist
  • Patent number: 4399991
    Abstract: A mechanism for stacking and accumulating a plurality of stacks of predetermined numbers of flat flexible articles, such as pillowcases and like products, sequentially received therein, such as from a machine fabricating such articles.
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: August 23, 1983
    Assignee: Springs Mills, Inc.
    Inventors: Palmer B. Everall, Jr., Jack R. Lowery, Sr.
  • Patent number: 4400124
    Abstract: A device for handling a stack of flexible articles, such as magazines comprises a bearing plate for receiving the stack of articles which either has an arched central portion or a deflecting bar for holding a stack of articles thereon in an arched location with the ends lowered in the central portion. Associated with the bearing plate is a gripping mechanism which includes gripping arms which are mounted for movement toward and away from respective ends of the articles to be gripped. Each of the gripping arms includes a holding finger which may be rotated between a horizontal position in which the fingers will engage below each end of the articles or to a vertical position in which the articles are released. When the fingers engage horizontally below the ends of the articles the gripping mechanism may be lifted to lift the articles off the bearing plate.
    Type: Grant
    Filed: May 29, 1981
    Date of Patent: August 23, 1983
    Assignee: Pfaff Industriemaschinen GmbH
    Inventor: Peter Greller
  • Patent number: 4361319
    Abstract: A bin for receiving sheets arranged in an apparatus for collating or sorting of sheets fed successively, which includes a rear end portion, a front end portion and an intermediate inclination portion connected therebetween. The front end portion includes a stopper or stoppers extending substantially vertical for stopping a front end of the sheet fed into the bin and a straight guide portion, on which the stopper or stoppers attached. The rear end portion includes an upright plate extending substantially vertical used for stopping and aligning a rear end of the sheet and a plate inclined so as to go down forwards in sheet feeding direction. The intermediate inclination portion is connected at front and rear end with the straight guide plate and the inclined plate of the rear end portion direct or through curve portion. In this bin the sheet can be aligned by using falling motion of the sheet with the own weight.
    Type: Grant
    Filed: September 19, 1980
    Date of Patent: November 30, 1982
    Assignee: Ricoh Co., Ltd.
    Inventors: Sunao Ikeda, Tamaki Kaneko, Kunio Hibi, Tugio Okuzawa, Yohtaro Kakitani, Hideo Kikuchi
  • Patent number: 4353542
    Abstract: A sheet collection apparatus for stacking sheets delivered thereto face-up in the order 1 to n with sheet 1 on the top of the stack. The apparatus includes one or more collection trays, such as the bins of a sorter which are indexed past a feed throat. Retractable support arms at the throat support the sheets already in a bin opposite the throat during delivery of a sheet thereto whereby the sheet enters the bin below the support arms.
    Type: Grant
    Filed: July 25, 1980
    Date of Patent: October 12, 1982
    Assignee: Xerox Corporation
    Inventors: Clifford Knight, William Gilmour, Bernard F. Page, John Bilton
  • Patent number: 4345754
    Abstract: An improved photographic print stacking device includes a print slide concavely bowed transversely to the direction of travel proximate a discharge end of a conveying line, and a pair of drive rollers. Individual photographic prints are conveyed on the conveying line onto the concavely bowed print slide. The drive rollers engage and push the central portion of each print downwardly against the central portion of the print slide, while the slide edge portions of each print are deflected upwardly by the side edges of of print slide so that each print is bowed, thereby giving each print greater beam strength in the direction of travel.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: August 24, 1982
    Assignee: Pako Corporation
    Inventor: Armer J. Willenbring
  • Patent number: 4328963
    Abstract: A sorting machine is provided for attachment to a copying machine to receive successive sheets from an outlet from the copying machine. The sorting machine has plural trays mounted to move progressively past the sheet outlet in opposite directions, the trays being relatively close together when positioned at either side of the outlet, but adjacent trays being widely spaced to accommodate the incoming sheets from the outlet. The trays are fed past and spaced at the outlet by driven members at opposite sides of the tray which engage and shift stacked trays in succession. The driven members are notched discs functioning as a linear Geneva movement. The remote ends of the trays are freely supported one on the other for relative longitudinal and pivotal movement.
    Type: Grant
    Filed: November 29, 1979
    Date of Patent: May 11, 1982
    Assignee: Gradco Dendoki, Inc.
    Inventors: R. Clark DuBois, John C. Hamma
  • Patent number: 4313669
    Abstract: An improved photographic print stacking tray device includes a print tray concavely bowed transversely to the direction of travel and a central deflector. As the individual photographic prints are discharged from a conveying line onto the print tray, the central deflector pushes the central portion of each print downwardly while the side edge portions of each print are deflected upward by the print tray so that each print is bowed, thereby giving each print greater beam strength in the direction of travel.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: February 2, 1982
    Assignee: Pako Corporation
    Inventors: Louis A. Larson, Charles L. Euteneuer
  • Patent number: 4251000
    Abstract: Demountable, modular, apparatus permitting item/documents, such for example as checks, to be stacked at high speed on opposite sides of a linear main-line item feed-through pathway. Indicators are included for indicating in which direction, forward, right or left of the main-line pathway an item diverting gate is directed and item position sensing devices are located within and adjacent to the diverting gates. Each demountable module, if more than one is employed, is provided with right and left columnators including concentric roller members disposed between a resilient drive roller. Idler rollers are demountably, replaceably secured adjacent respective drive rollers by resilient flat spring members for ease and efficiency of replacement, repair and/or removal. Each diverting gate includes an LED and phototransistor combination for sensing the passage therethrough of an item.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: February 17, 1981
    Assignee: Burroughs Corporation
    Inventor: William B. Templeton
  • Patent number: 4129295
    Abstract: A document feeder for moving documents across an upwardly facing imaging platen of a copying machine includes a stacking tray disposed above the platen and in substantially parallel relationship therewith. A first guide element guides documents moving off the imaging platen at one edge thereof along an upwardly extending curved path and discharges the documents at one end of the stacking tray along an upwardly directed trajectory. A second guide element intercepts documents discharged along the upwardly directed trajectory at a location above the top of the tray and guides the documents downwardly into the stacking tray, thus obviating interference between a document moving into the tray and a bent or curled document already in the tray.
    Type: Grant
    Filed: December 29, 1976
    Date of Patent: December 12, 1978
    Assignee: Savin Business Machines Corporation
    Inventors: Tatsu Hori, Kenneth W. Gardiner, Norman F. Mangal
  • Patent number: 4062536
    Abstract: A header member containing an air chamber is positioned above each pocket of a document sorter, the air chamber having an upwardly directed inlet port and a plurality of downwardly directed outlet ports downstream of the inlet port. An air supply nozzle is positioned below the inlet port to blow air into the air chamber, the air then flowing out of the chamber through the outlet ports. The supply of air into the chamber is interrupted when a document passes between the inlet port and the supply nozzle, and the air flow is resumed when the document passes the inlet port, the air flowing from the outlet ports blowing the document downwardly, out of the path of the succeeding document, and into the pocket of the document sorter.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: December 13, 1977
    Assignee: NCR Corporation
    Inventor: Gunnar P. Michelson
  • Patent number: 4019640
    Abstract: Apparatus for accumulating sheet material in stacked relation on a vertically descending tray and transferring the stack for subsequent processing. An oscillating transfer mechanism is positioned in the path of movement of the tray as it is lowered. The tray and stack is pivoted by cam means into a complemental position with the transfer mechanism and as it passes the transfer mechanism is deposits the accumulated stack on the transfer mechanism. The transfer mechanism is then oscillated to remove the stack. When the stacking tray has assumed its transfer mode, an auxiliary sheet material receiving tray is formed by rotating two vanes from a vertical to horizontal position to receive subsequent sheets. Upon return of the stack tray to its initial position, the vanes are rotated back to their horizontal position dropping the accumulated sheets to the tray.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: April 26, 1977
    Assignee: Pitney-Bowes, Inc.
    Inventors: M. James Marin, Robert E. Mersereau
  • Patent number: 3988018
    Abstract: A fully automatic paper sorter designed for use as an accessory to an office copier or copier/duplicator machine. The sorter bins have a concave configuration which takes advantage of paper curl developed in the copier to provide more efficient utilization of available bin space. A speed buffering arrangement permits the sorter to operate with copiers having various speeds of paper movement. A separate paper diverting gate is associated with each paper receiving bin, the gates being activated in succession by a rotating cam stack. A sophisticated paper monitoring and control system detects various types of paper jams, and responds either by shutting down the sorter immediately, or by routing subsequent paper sheets directly to a paper catch tray, depending upon the type of jam involved. When the capacity of the sorter is exceeded, excess sheets are routed to the paper catch tray.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: October 26, 1976
    Assignee: Van Dyke Research Corporation
    Inventors: Robert Joseph Tusso, Daniel Richard Erny, James Edward Landrith
  • Patent number: 3957264
    Abstract: A copier/collator installation wherein the copier's output copy sheets are collated into sets in a multi-bin collator. The collator bins are vertically stacked.Vertical stacking of the electrostatically charged and heated copy sheets, which therefore tend to curl, is enhanced by providing collator bins having electrically nonconductive walls. The bottom sheet-receiving walls are formed to have a generally concave cross section, facing upward. Considering the direction of sheet movement, this concave surface extends generally transverse the sheet movement. Pivoted and biased paper stabilizing wires hold down the leading portion of the sheet stack in the bin, and also absorbs the sheet's kinetic energy as the sheet enters the bin. A flexible, electrically nonconductive plastic flap, at the bin's entrance or mouth, holds down the sheet's trailing portion, and also absorbs the sheet's kinetic energy.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: May 18, 1976
    Assignee: International Business Machines Corporation
    Inventors: Paul S. Bach, James A. Craft, Gerald B. Lammers, James C. Rogers
  • Patent number: 3945634
    Abstract: A veneer stacker for receiving sheets of veneer at a relatively high rate of speed and assembling them into a uniform stack. The stacker utilizes the velocity of the veneer sheet, acting against a series of curved guide shoes, for supporting the sheet by means of centrifugal force, while guiding it to a stacking position. As the sheet approaches the stacking position, it initiates a momentary vacuum braking action adapted to draw the sheet into intimate engagement with the guide shoes, stopping the sheet, thereby removing its supporting force. Continuously rotating vacuum drums engage the lead edge of the falling sheet for positioning it against an aligning forward stop, and correcting skew of the sheet as an incident to such positioning.
    Type: Grant
    Filed: June 18, 1974
    Date of Patent: March 23, 1976
    Inventor: Harry B. Calvert