With Loop Former Preceding Tool Patents (Class 83/336)
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Patent number: 7739935Abstract: A device for the lateral separation of paper webs, including: a paper introduction region with at least one driven web supply roller; a buffer region, in which the web is prepared for discontinuous forward motion; a cutting device; and a paper lead-off region with discontinuous web forward motion; the device further including at least a first tube group having two tubes which may be moved relative to at least a third tube of the tube group, perpendicular to the web. The tube group (120; 150) is arranged intermediate the paper introduction region having merger region tubes and a discontinuously driven paper web roller in order to form a turning web loop of varying length. The length as determined by the separation between the tubes of the tube group is regulated by a controller, in connection with the driven web supply roller and the discontinuous web forward motion.Type: GrantFiled: September 27, 2004Date of Patent: June 22, 2010Assignee: Kern AGInventor: Patrick Schöpfer
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Patent number: 5078033Abstract: A towel roll brake is not needed in this "grab and pull" dispenser to prevent the overspun towel from the roll from entering the nip region. An extra idler roll rests on the pinch roll and is counterrotated thereby, and any overspun web resting on the idler roll is kicked to the back of the dispenser. Fingers formed on the inside surface of the dispenser cover are positioned to derfine with the idler roll a gap which is only one-ply wide and through which the toweling must pass to reach the nip region, thereby preventing the overspun web from folding over onto itself. Without the brake tearing or "tabbing" of the soft towel in the user's (wet) hands as he pulls down on it is prevented.Type: GrantFiled: November 13, 1990Date of Patent: January 7, 1992Assignee: Georgia-Pacific CorporationInventor: John S. Formon
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Patent number: 4781088Abstract: A rotary die cutter system minimizes the amount of scrap between successive blanks cut from web material by holding the web against backward movement at a position spaced upstream from the nip defined by the die and anvil cylinders, retracting the cut leading end of the web through a predetermined distance by means of a fluid pressure cylinder in response to release of the web by the cut-off knife at the trailing edge of the die on the die cylinder such that on the next cycle, the leading edge of the die will engage the web at a position spaced so close to the retracted leading end of the web that contiguous portions of a single blank can be cut from the web during successive revolutions of the die cylinder.Type: GrantFiled: December 23, 1987Date of Patent: November 1, 1988Assignee: Corfine Inc.Inventors: Barry J. O'Connor, Robert B. Vigder
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Patent number: 4716802Abstract: A rotary die cutter system the amount of scrap between successive blanks cut from web material by holding the web against backward movement at a position spaced upstream from the nip defined by the die and anvil cylinders, retracting the cut leading end of the web through a predetermined distance in response to release of the web by the cut-off knife at the trailing edge of the die on the die cylinder such that on the next cycle, the leading edge of the die will engage the web at a position spaced close to the leading end of the web.Type: GrantFiled: May 5, 1987Date of Patent: January 5, 1988Assignee: Corfine Inc.Inventors: Barry J. O'Connor, Robert B. Vigder
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Patent number: 4603630Abstract: A machine for continuously laterally perforating very wide paper and having an electronic control for smoothly starting and stopping the paper, a length of perforated paper detection device and combined control warning device for detecting the end of the roll of paper, wherein the machine is arranged in a compact structure having two simultaneously mechanized lateral holders which support all of the various mechanisms so as to thereby ensure the perfect positioning thereof. The actuation of the perforator heads of the machine is effected by the paper itself through a precision mechanized antiskid roller and the tension of the paper is controlled by swinging rollers whose movement is detected by a sensor and electronically processed while simultaneously taking into consideration the speed of the paper so as to control the unwinding of the feed roll of paper utilizing an electromagnet brake.Type: GrantFiled: June 13, 1984Date of Patent: August 5, 1986Assignee: Investronica, S.A.Inventor: Manuel Martinez Llaneza
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Patent number: 4569265Abstract: A slitter for steel belt including rotary blades for slitting a belt material including steel cords and topping rubber. The rotary blades include an upper blade and a lower blade having their circumferential portions slightly overlapped and in contact with each other. Sandwiching delivery members for delivering the belt material to the blades is installed either at both sides or one side of the rotary blades in the delivery direction of the belt material so that the belt material is slit in a sandwiched condition. The sandwiching members as well as the rotary blades may be automatically adjusted in position in the transverse direction of the belt material. A freely suspended curved portion of the belt material formed between a delivering device and the slitter may be so controlled as to keep the suspended amount constant.Type: GrantFiled: January 4, 1983Date of Patent: February 11, 1986Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Hitoshi Kawashima, Yoshikazu Tsujimoto
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Patent number: 4534253Abstract: A device for feeding a continuous web, for cutting it into pieces and having automatic reel change for changing the reels from which the web is unwound is described. This device includes a cyclic cutting device positioned at the confluence of two tracks, along which two continuous webs are unwound from corresponding reels are fed, and controls for controlling the generation of a signal when an associated reel is exhausted; along each of the tracks there are provided a mechanism for feeding the webs from the reels to the cutting device, and such feeding mechanism include, for each track, a pair of feed rollers for feeding the associated web to the cutting device.Type: GrantFiled: May 24, 1982Date of Patent: August 13, 1985Assignee: G. D. Societa' per AzioniInventor: Enzo Seragnoli
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Patent number: 4305317Abstract: A feed and cutting device for dividing a continuous web into portions is described. The device comprises along a feed plane, guiding device for the web comprising a pair of mutually tangential rollers, apparatus for feeding the web along said plane and a device for cutting the web into portions. The main feature of the device is that at least one of the guide rollers is mounted on a shaft coaxial thereto and rotating with continuous motion, and is connected to the shaft by a self-locking device which prohibits any discordant relative rotation between the roller and the shaft but which allows idle rotation of the roller on the shaft at an angular speed exceeding the angular speed of the shaft, the angular speed of the shaft being close to but less than the angular speed transmitted to the respective roller by the feed device by way of said web.Type: GrantFiled: November 13, 1979Date of Patent: December 15, 1981Assignee: G.D. Societa per AzioniInventor: Enzo Seragnoli
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Patent number: 4197773Abstract: The device for cutting a web into sections according to cutting marks provided on the web comprises an advancing roller for advancing the web along a predetermined track, an electrooptical scanning device for reading respective cutting marks on the web and for generating corresponding output signals, a cutting mechanism arranged on the track behind the advancing roller and monitored by the scanning, a tension equalizing and loop forming device arranged on the track before the advancing roller and the scanning device to loop resiliently a portion of the web, an elliptical gear driving system for driving the advancing roller; and a magnetic coupling arranged between the driving system and the advancing roller to stop the feeding of the web in response to the output signals from the scanning device and to resume the feeding after the cutting mechanism has severed the marked web portion.Type: GrantFiled: June 1, 1978Date of Patent: April 15, 1980Assignee: Guk-Falzmaschinen Griesser & Kunzmann GmbH & Co. KGInventors: Anton Kunzmann, Bernd Kunzmann
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Patent number: 4171666Abstract: Apparatus for successively fabricating slotted partition strips for use in assembling multi-cell partitions utilized in cartons, crates and the like as characterized by construction providing for adjustability thereof for fabrication of varying sizes and types of partition strips, as follows. Devices supply a continuous length of material such as paper board. Devices successively transversely cut the continuous length of material into individual strips of desired height. Devices are provided for varying the height of the strips cut by the strip cutting devices. Devices successively longitudinally cut a desired number of spaced-apart slots in each of the strips extending inwardly a desired distance from the leading cut edge thereof to define a predetermined number of flaps on the leading edge. Adjustment devices are provided for varying the height of the slots cut in the strips by the slot cutting devices.Type: GrantFiled: November 29, 1977Date of Patent: October 23, 1979Assignee: Sonoco Products CompanyInventors: Dale R. Swenson, Sidney E. Moore, Hurley R. Brooking, Harlan L. Carroll
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Patent number: 4170170Abstract: Apparatus for successively fabricating and assembling multi-cell partitions, having a plurality of intermeshing transverse and longitudinal partition strips for use in cartons, crates and the like, is characterized by providing for continuous movement of the partition strips, assembly of the partition strips in a collapsed condition, and adjustability of the apparatus for fabrication and assembly of varying sizes and types of partitions to provide desired speed and versatility for commercial operation.Type: GrantFiled: November 29, 1977Date of Patent: October 9, 1979Assignee: Sonoco Products CompanyInventors: Marion W. Beasley, Dale R. Swenson, Sidney E. Moore, Hurley R. Brooking, Harlan L. Carroll
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Patent number: 4138913Abstract: An input shaft is drivingly connected to a crankshaft of a punch press for rotation at a preselected speed. A geared cam drive drivingly connects the input shaft to a driven feed roll so that continuous rotation of the input shaft is converted to intermittent rotation of the feed roll. The intermittent rotation of the feed roll is timed with the punching operation so that the feed roll intermittently advances a preselected length of stock material to the punch press after each punching operation. Bevel gears drivingly connect the input shaft to a pull roll that rotates to continuously unreel stock material from a coil. During the punching operation, rotation of the feed roll is interrupted forming a loop in the stock material between the pull roll and the feed roll.Type: GrantFiled: September 26, 1977Date of Patent: February 13, 1979Assignee: Vamco Machine and Tool, Inc.Inventor: Patrick J. Gentile
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Patent number: 4084490Abstract: An apparatus for cutting the bottom disc used in the manufacture of disposable drinking containers. A web of foam plastic container bottom material is fed through a rotary cutting die. Discs of foam plastic material are then sequentially positioned so that they can be affixed to container sidewalls which are moving in seriatim fashion past the cutting apparatus. The direction of movement of the web of foam plastic material through the cutting apparatus is periodically reversed so that the maximum number bottom discs can be cut from the web of material. The method of moving the web of material in an intermittent flow plus the movement of the severed discs is also set forth in detail.Type: GrantFiled: February 14, 1977Date of Patent: April 18, 1978Assignee: Owens-Illinois, Inc.Inventor: Thomas E. Doherty