With Slip Between Positioned Work And Feed Means Patents (Class 83/269)
  • Patent number: 8047108
    Abstract: A sheet processing apparatus comprises a first conveyer roller pair arranged at the upstream side of a sheet conveyance route and a second conveyer roller pair arranged at the downstream side of the sheet conveyance route so as to convey a sheet of paper from the upstream side to the downstream side. Additionally, a punching unit is arranged between the first conveyer roller pair and the second conveyer roller pair. The second conveyer roller pair is made to operate as a slipping roller after the time when the leading end of the sheet of paper being conveyed passes the first conveyer roller pair and a stopper is made to appear at a position downstream relative to the second conveyer roller pair so as to make the leading end of the sheet of paper abut the stopper in order correct the skew, if any, of the sheet of paper.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: November 1, 2011
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventor: Isao Yahata
  • Patent number: 6536319
    Abstract: A cutting machine for trimming three sides of printed products includes blades that are moved up and down in a first cutting station for trimming the front, and in a second cutting station for trimming the top and bottom of the printed products. A transport mechanism is provided for positioning the printed products at adjustable rear stops. The conveying path formed between adjustable stops associated with the cutting stations and the cutting region specified for top and bottom trimming along the conveying path of the printed products are variable.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: March 25, 2003
    Assignee: Müller Martini Holding AG
    Inventor: Heinz Boss
  • Patent number: 6361036
    Abstract: A sheet finisher for an image forming apparatus that executes a precise and continuous punching at a specific position on a sheet while maintaining the conveyance speed of the sheet ejected from the image forming apparatus. The puncher is provided with the first and second conveyance rollers disposed along the conveyance direction of the sheet, in which the drive speed of the second conveyance roller disposed upstream in the conveyance direction is temporarily increased to form a loop of the sheet, and the punching device is driven so as to synchronize with the timing that the trailing edge of the sheet is detached from the second conveyance roller and brought into a temporal halt, thereby executing a punching precisely at the specific position on the sheet.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: March 26, 2002
    Assignee: Minolta Co., Ltd.
    Inventor: Yoshiki Nakazawa
  • Patent number: 6014920
    Abstract: In a paper-punching device for use in an image-forming apparatus, the rear edge of a sheet of paper that is being transported through a transport guide is detected by the photosensor. After a predetermined time has passed since the detection, a punching device is activated. At this time, a punching member is depressed downward, and a punching blade attached to its top penetrates through the sheet of paper, thereby forming a punch hole. Even during the punching operation, transport rollers continue to rotate. Therefore, when the sheet of paper is caught by the punching blade, the transport rollers are allowed to slip predetermined amount with respect to the paper. For this reason, at least one of the transport rollers is made of a foamed material. With this arrangement, since the punching operation is carried out on the rear side of the sheet of paper, it becomes possible to reduce the occurrence of paper jams even if sheets of paper are transported in succession.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: January 18, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasuji Yamauchi, Toshio Yamanaka, Masafumi Okumura, Masashi Hirai, Kyousuke Taka, Kinji Uno, Yoshiharu Yoneda, Hirokazu Yamauchi
  • Patent number: 5839336
    Abstract: In a paper-punching device for use in an image-forming apparatus, the rear edge of a sheet of paper that is being transported through a transport guide is detected by the photosensor. After a predetermined time has passed since the detection, a punching device is activated. At this time, a punching member is depressed downward, and a punching blade attached to its top penetrates through the sheet of paper, thereby forming a punch hole. Even during the punching operation, transport rollers continue to rotate. Therefore, when the sheet of paper is caught by the punching blade, the transport rollers are allowed to slip a predetermined amount with respect to the paper. For this reason, at least one of the transport rollers is made of a foamed material. With this arrangement, since the punching operation is carried out on the rear side of the sheet of paper, it becomes possible to reduce the occurrence of paper jams even if sheets of paper are transported in succession.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: November 24, 1998
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasuji Yamauchi, Toshio Yamanaka, Masafumi Okumura, Masashi Hirai, Kyousuke Taka, Kinji Uno, Yoshiharu Yoneda, Hirokazu Yamauchi
  • Patent number: 4909110
    Abstract: A tube cutting apparatus of the type in which jaws carried by relatively reciprocal slides move into and out of clamping engagement with tubing to facilitate severing of lengths of tubing as the tubing is moving rapidly along its lengthwise axis. Each of the jaws is releasably secured to the respective slide by a cam pin which coacts with a cam surface on the jaw to bring an eccentric portion of the cam pin into wedging coaction with the cam surface on the jaw in response to rotation of the pin and firmly and wedgingly secure the jaw to the slide. The jaw may be removed from the slide by simply rotating the cam pin a fraction of a revolution, axially withdrawing the cam pin, and then lifting the jaw out of the slide. Replacement is accomplished by reversing this procedure.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: March 20, 1990
    Inventor: John J. Borzym
  • Patent number: 4406199
    Abstract: This invention provides a collar making apparatus having an integral notcher capable of forming a flat sheet of metal into a cylindrical collar. The notcher includes a stationary die and a ram mounted for reciprocation which includes a punch that cooperates with the die to stamp a notch in the sheet. The notcher further aligns a sheet to be punched and a control automatically operates the ram when a sheet is in the proper position for punching. From the notched sheet, the apparatus forms a channel along one side edge, forms the sheet into a circular configuration, and crimps the other side edge of the sheet.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: September 27, 1983
    Assignee: The Lockformer Company
    Inventor: Rudolph A. Rom
  • Patent number: 4397203
    Abstract: A towel cutting machine includes a drive feed device including rollers for feeding strip material from a towel supply roll to and between a cutter blade and braking-sensing mechanism and into a set of driver pull slip-clutch rollers to pull the strip of material through the towel cutting machine, to hold the strip material taut during cutting and to draw off the towel severed from the end of the strip material after being cut.
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: August 9, 1983
    Inventors: Frank T. Brack, Frank B. Brack
  • Patent number: 4372183
    Abstract: The coordinate slides of a computer controlled punching and nibbling machine are coupled by resilient elements with respective nuts engaging screws driven by motors controlled by computer programming. The resilient coupling between the slides and the respective nuts permits the motors to run and thereby drive the nuts during periods when the slides are held stationary by engagement of the punching and nibbling tool with a workpiece mounted on the upper slide. As soon as the tool is disengaged from the workpiece, the workpiece is quickly moved to the next position by energy stored in the resilient elements. A sensor between each of the slides and the respective nut senses the displacement of the nut relative to the slide and transmits this information to the computer.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: February 8, 1983
    Assignee: Pullmax Aktiebolag
    Inventor: Esko Lehtinen
  • Patent number: 4296662
    Abstract: A method of and apparatus for scoring block size glass sheets into shapes for further fabricating into automotive windshields, side lights and the like. The apparatus includes a continuously operating conveyor for advancing the block size glass sheets to and from a scoring station, including a sheet capturing mechanism whereat a sheet is captured and held in a predetermined position on an operating roll conveyor beneath a positionable scoring unit which produces at least one score line on the glass sheet along a predetermined path. Thus the scored sheet, when released, is quickly conveyed away from the scoring station.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: October 27, 1981
    Assignee: Libbey-Owens-Ford Company
    Inventors: Ronald R. Reed, William F. Crone, Jr., G. Robert Meyer
  • Patent number: 4257296
    Abstract: A back-gauging system for a shear machine that derives support from the side housings of the machine and is designed with a rotatable movement gauge stop and slideable control guides to enable the gauge stop to be moved above the work plane for shearing work pieces longer than the maximum gauge range, to eliminate excessive force being transmitted to the gauge drive when gauging or shearing and to eliminate wedging of sheared pieces between the knives and the back-gauge stop.
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: March 24, 1981
    Assignee: Canron Corp.
    Inventor: Wilbur G. Short
  • Patent number: 4175457
    Abstract: Disclosed is an apparatus for punching spaced binding holes in discrete stacks of bound pages, the apparatus being characterized by a front stop member and a conveyor belt releasing member whose motion is synchronized with the punch strokes. This action together with use of a joined punch and die assembly in the apparatus adapt the resulting structure for rapid, accurate punching of binding holes in pages received in discrete stacks from a high speed automatic stitcher-binder or the like.
    Type: Grant
    Filed: April 7, 1978
    Date of Patent: November 27, 1979
    Inventors: Morris L. Jacobs, Hiram J. Dunagan
  • Patent number: 4009627
    Abstract: The device is particularly adapted to dispense portions of a chain having relatively diametrically enlarged segments therein, such as master links, which are disposed at substantially regularly spaced intervals along the length of the chain, although the intervals may not and in fact need not be uniformly spaced. According to the apparatus, the chain is supported so that it is movable relatively lengthwise thereof through the opening in a collar which is capable of being opened and closed about the chain, and the opening of which has a diameter of less than that of the relatively enlarged segments of the chain in the closed condition of the collar. When the collar is open, the chain is advanced lengthwise in the direction of the collar to the extent that a portion of the chain including one relatively enlarged segment therein, is fed through the opening in the collar and assumes a position on the opposite side thereof.
    Type: Grant
    Filed: November 3, 1975
    Date of Patent: March 1, 1977
    Assignee: Morley Brotman
    Inventor: Cliff High
  • Patent number: 3978703
    Abstract: Apparatus for automatically cutting sections of measured length from a coil of an elongated strip which has a rotatable mounting device for the coil, a feed and straightener driven at a constant speed for pulling the strip from the coil, a hump table, a speed control unit with a pair of pinch rolls, a shears, and a device for generating a first signal when the leading edge of the trip has been transported past the shears by a distance equal to the length of the measured section for breaking the pinch rolls to stop movement of the strip at the shears and for actuating the shears, said device also generating a second signal when the leading edge of the strip has been transported past the shears by a shorter distance than the measured length of the section for actuating a pneumatic cylinder to drive the pinch rolls toward each other and grip the strip, the lower pinch roll being driven by a constant speed motor at a cicumferential speed less than the speed of the strip from the feeder, thus producing a hump betw
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: September 7, 1976
    Assignee: Gary Steel Products Corporation
    Inventors: Theodore Primich, David A. Strilich, David McLeroy
  • Patent number: 3969967
    Abstract: Apparatus is provided having a series of aligned swinging stops to simplify the operation of cutting unwanted end portions off lumber which moves generally sideways through the apparatus. The swinging stops can be used individually to locate an end of the lumber before cutting the lumber. Also any particular stop can swing out of the path of the lumber if the lumber is engaged against another stop. Each swinging stop has a first portion extending generally downwardly from a pivotal mounting for arcuate movement along a path aligned with the direction of travel of the lumber through the apparatus, and a second portion pivotally connected to the first portion below the pivotal mounting for movement in another arcuate path which is also aligned with the direction of travel of the lumber.
    Type: Grant
    Filed: October 16, 1975
    Date of Patent: July 20, 1976
    Inventor: Reggald E. Isley