Plural Cutting Steps Effect Progressive Cut Patents (Class 83/49)
  • Patent number: 4613321
    Abstract: A tandem arrangement of diecutting rolls severs scrap from a traveling web in two steps, each of which steps effects cutting entirely through the web, but at different peripheral locations. The partially cut scrap is carried with the remainder of the web from the first roll to the second, and any severed piece that lodges within the cutting element of the second roll is removed by the action of a mechanical scraper, which passes therethrough.
    Type: Grant
    Filed: September 6, 1985
    Date of Patent: September 23, 1986
    Assignee: Preston Engravers, Inc.
    Inventors: Martin Kesten, Leroy H. Carlson, Jr., Gary L. Kwader
  • Patent number: 4608890
    Abstract: An apparatus and method for applying a stabilizer ply to a tire building drum and more particularly an apparatus and method for cutting and applying the stabilizer ply material and specifically an apparatus for cutting the stabilizer ply material between cords disposed therein and correcting for variations of the cord angles during the application process in order to provide an improved splice between the leading and trailing edges of the stabilizer ply material.
    Type: Grant
    Filed: July 23, 1984
    Date of Patent: September 2, 1986
    Assignee: The Firestone Tire & Rubber Company
    Inventors: Donald O. Still, Hubert T. Hovance, George J. Burley
  • Patent number: 4574667
    Abstract: A sheet metal cutting apparatus with sheet metal cutting member, adjustable guide member and various attachments in a portable embodiment for the mounting of and controlled feeding of a sheet metal workpiece to the cutting member so that desired straight, circular, arcuate and/or combinations of arcuate and straight cuts may be effectuated. A guide bar is disposed laterally from the cutting member and supports the adjustable guide member and the various attachments. The adjustable guide member or any of the various attachments may be selectively positioned and locked along the guide bar at a desired radial distance from the cutting member.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: March 11, 1986
    Inventor: Robert E. Harris
  • Patent number: 4553464
    Abstract: Trimming apparatus for cutting the side walls of containers to predetermined, dimensional requirements so that such containers will be properly sized for subsequent usage. The apparatus is comprised of support means for holding an uncut container and an adjustable cutter assembly adapted to move along the support means and cut the wall of the container along desired lines in a synchronized manner. Each of the cutters include at least two knives that track on the same cut line with the leading knife cutting only partially through the side wall of the container while the following knife completes the cut. The apparatus also includes loading means for loading uncut containers and means for removing the cut portions.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: November 19, 1985
    Assignee: Hardigg Industries, Inc.
    Inventors: Edward W. Turner, Peter J. Blake, Joseph C. Strzegowski, Jr.
  • Patent number: 4546683
    Abstract: Parts which cannot fall because of their dimensions through an opening of a lower tool are separated from a workpiece plate in a cutting press with an immovable support, a coordinate table, two lateral workpiece supports movable parallel to the y-axis and a transverse carriage displaceable in the direction of the x-axis and having clamping elements, and with a central workpiece support of a plurality of articulately connected supporting elements displaceable in the direction of the y-axis so that a discharge opening for the separated part of the workpiece plate is openable or closable, in such a manner that first a cutting tool separates a workpiece part so as to retain at least one connecting web between separating edges of the workpiece plate and the workpiece part located transverse to the direction of movement of the central workpiece support, the workpiece plate and workpiece support being positioned by the coordinate table above the discharge opening, and before opening of the discharge opening the conn
    Type: Grant
    Filed: February 2, 1984
    Date of Patent: October 15, 1985
    Assignee: Behrens AG
    Inventors: Elmar Volkel, Walter Bredow
  • Patent number: 4532839
    Abstract: The method of cutting a plurality of boards or parts (20) from a number of stacked panels (10) which includes placing the panels upon a perforated fixture (2) including a plenum (14) such that the area beneath the perforated surface (4) may be evacuated. The stack of panels (10) are cut into boards or parts (20) the desired size and shape with the exception of a small tab (22) connecting each board or part (20) such that the entire panel (10) remains a unit. An impermeable sheet (24) such as plastic is placed over the top of the partially cut panels (10) and the space (14) beneath the partially cut panels is evacuated holding the parts in position. The tabs (22) are then cut and the boards or parts (20) removed.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: August 6, 1985
    Assignee: Tektronix, Inc.
    Inventor: Thomas C. Easton
  • Patent number: 4522092
    Abstract: A method of manufacturing a configured cut-out in a sheet of material by arranging a pair of dies to support a sheet of material therebetween, pushing a punch shaft through one die, then through the sheet of material and then through the other die, then retracting the punch shaft to effectuate initiation of a nibbling operation to produce a cut-out in the sheet of material to correspond to a cut-out in a template, which template is traced by a pilot finger during common motion of the template and the sheet of material.
    Type: Grant
    Filed: June 29, 1983
    Date of Patent: June 11, 1985
    Inventor: Adolph S. Dorosz
  • Patent number: 4457200
    Abstract: Method for cutting heavy wall steel tubing. The tubing is notched and cut through along a vertical axis but the blade is narrower than the interior diameter so as to leave the side walls uncut. A side wall is preferably notched during the first cut. Thereafter, a second blade is driven horizontally through the side notch to complete the cut.
    Type: Grant
    Filed: September 23, 1982
    Date of Patent: July 3, 1984
    Assignee: Alpha Industries Inc.
    Inventor: John J. Borzym
  • Patent number: 4419913
    Abstract: Pattern making, particularly for the garment industry, including longitudinally advancing a web of pattern material onto a cutting table; simultaneously longitudinally advancing a web of fleece material in parallel contact with the pattern material, such that the web of fleece abuts the underside of the cardboard material; pulling a vacuum through said web of fleece, such that the pattern material is pulled towards the fleece; cutting patterns in the pattern material within the confines of the cutting table, such that a burr is formed on the underside of said pattern material and said burr engages said fleece material; simultaneously advancing the web of pattern material and the web of fleece away from the cutting area and separating the web of fleece from the pattern material, so that the cut patterns may be removed.
    Type: Grant
    Filed: August 20, 1981
    Date of Patent: December 13, 1983
    Assignee: Aristo Graphic Systeme GmbH & Co., KG
    Inventors: Eduard Schutt, Gunter Hell
  • Patent number: 4404882
    Abstract: A method and apparatus for trimming an elongated article are disclosed by which the article is notched at longitudinally spaced locations and material spanning adjacent notches trimmed from the article as discrete strips.
    Type: Grant
    Filed: August 6, 1981
    Date of Patent: September 20, 1983
    Assignee: Western Electric Company, Inc.
    Inventor: George E. Mock
  • Patent number: 4402241
    Abstract: An electric saw or other power-operated tool carries a spring-loaded pin for selectively locking the output spindle against rotation and facilitating removal of the blade. The locking pin comprises a bent wire-formed element pivotably retained in the housing. One end of the pin is slidably received within a flanged bearing opening in the stationary guard. When the pin is pivoted by the operator, the end of the pin is received within an aperture in the inner flange washer, the latter forming part of the clamping mechanism for fixedly securing the blade on the spindle.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: September 6, 1983
    Assignee: Black & Decker Inc.
    Inventor: Robert G. Moores, Jr.
  • Patent number: 4393570
    Abstract: To cut strips in the length direction from long sheet metal plates, a table upports the plate and a cutting device moves along the length of the plate supported on the table for cutting the desired strip in a series of cutting steps. The cutting device includes a bottom cutter and a top cutter with the top cutter being movable toward and away from the bottom cutter for making partial cuts across the length of the plate. The cutting device is moved along the support table in the length direction of the plate. After completing the cutting of a strip, the cutting device can be reversed to cut another strip as it moves in the opposite direction. Movable clamps hold the plate down during the cutting operation. Further, movable members are provided in the support table to support the strip as it is cut in successive steps.
    Type: Grant
    Filed: December 12, 1980
    Date of Patent: July 19, 1983
    Assignee: Karl Mengele & Sohne Maschinenfabrik und Eissengiesserei GmbH & Co.
    Inventors: Georg Frick, Harro Reiff, Alois Kirsch
  • Patent number: 4388847
    Abstract: Envelopes are opened by standing each envelope on an edge thereof in a guide channel and moving the envelope on edge along the channel into and through a cutting zone where one or more knives being rotated on a flywheel rotor continually move past an anvil and slice off a succession of narrow elongate segments of the border of the envelope. The segments are thrown from the cutter and fall by gravity into a collecting receptacle. Each knife has a cutting edge formed with at least one leading point and with cutting edge portions trailing from the point. Each segment is sliced off by first puncturing the envelope at a point in its border and then slicing it from that point across and along its edge.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: June 21, 1983
    Inventor: Oscar W. Stoeckli
  • Patent number: 4380944
    Abstract: A method for cutting limp sheet material with a rigid, cantilevered blade that is reciprocated as it advances along a cutting path through sheet material employs a load sensor to measure lateral loads applied to the blade by the sheet material during cutting. A load signal from the sensor is applied to the blade controls through a variable gain feedback circuit and causes the blade to be oriented slightly toward the side of the cutting path from which an unbalanced load is applied. The adjustment of the gain in the feedback network is made by means of speed sensors which measure the rate at which the cutting blade advances through the sheet material and adjust the feedback gain in inverse relationship.
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: April 26, 1983
    Assignee: Gerber Garment Technology, Inc.
    Inventors: H. Joseph Gerber, Leonard G. Rich
  • Patent number: 4354411
    Abstract: The shears have a lower blade and an upper blade. The upper blade is reciprocated with respect to the lower blade through a transmission. The transmission includes a first eccentric which is continuously rotated to continuously reciprocate the upper blade over a vertical stroke equal to the throw of the first eccentric. This throw is transmitted to the upper blade through a second eccentric surrounding the first. The second eccentric is quickly rotatable, between two positions. In the first position, the upper blade is always clear of a billet on the lower blade. In the second position, the upper blade cuts the billet during the reciprocation. To ensure that the upper blade only penetrates approximately half the thickness of the billet, the position of the lower blade is vertically adjustable.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: October 19, 1982
    Assignee: Sack GmbH
    Inventors: Karl Griese, Emil F. Kersting, Rolf Schulte
  • Patent number: 4344342
    Abstract: A method of producing washers and the like from a strip of sheet material having at least one straight edge, in which scrap generation is minimized.
    Type: Grant
    Filed: August 27, 1980
    Date of Patent: August 17, 1982
    Assignee: Sam Garvin & Company
    Inventor: George R. Garvin
  • Patent number: 4327615
    Abstract: A method and apparatus for cutting multi-ply layups of limp sheet material employs an automatically controlled machine with a knife blade and a controller for guiding the blade along cutting paths defined by a marker of pattern pieces. The marker contains a plurality of pattern pieces in a closely packed array which causes the pattern pieces and segments of the cutting paths to be in contact or in close proximity to one another, and makes accurate cutting difficult or impossible. Digitized data defining a cutting program for the marker is preprocessed in a data processor to identify critical segments of cutting paths where cutting difficulties may arise and introduces into the data remedial command signals that guide the cutting blade past the identified critical segments for more accurate cutting.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: May 4, 1982
    Assignee: Gerber Garment Technology, Inc.
    Inventors: Heinz J. Gerber, Charles M. Hevenor
  • Patent number: 4320680
    Abstract: A cutting assembly, when mounted on a base, is used to cut a fruit or the like along a circular cross section to form two substantially equivalent sections having serrated edges. The cutting assembly comprises a rotatable cup that may be held in a fixed position by a marker. A knife supported by the cutting assembly is inserted into and withdrawn from the fruit. Repetition of the rotation of the cup and the insertion of the knife produces the serrated fruit sections.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: March 23, 1982
    Inventors: Pantaleon S. de la Cruz, Michel A. Chonez
  • Patent number: 4249437
    Abstract: A device for automatically and simultaneously making two parallel straight cuts of predetermined length in a mat comprising a transporting means, a pair of cutting means, a single driving means for said cutting means and a pair of signalling means for activating said driving means.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: February 10, 1981
    Inventor: Leo J. Hagenson
  • Patent number: 4231275
    Abstract: A cutter for cutting thin boards, including a base provided with a plurality of guide grooves on one side in such a manner that they are arranged so as to form progressively larger angles with the under surface of the base. A cutting blade is mounted in each of these guide grooves in such a manner that all the cutting blades fall on the same plane with each other.
    Type: Grant
    Filed: April 17, 1979
    Date of Patent: November 4, 1980
    Inventor: Nobuo Onishi
  • Patent number: 4210042
    Abstract: A simple direct acting mechanism moves a circular rotatable disc cutter or two such cutters first to rollably engage a hard surface and then to traverse the surface to part the stock between a side-by-side pair of cords or wires. The cutter or cutters are blunt edged, as well as unheated and so avoid baring the cords or wires while parting the stock without the undesired effect of sharp or hot knives. The cutter or cutters are shiftable along the axis or axes to accommodate deviation of the cords with respect to the travel of the cutter. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawing and the following detailed description.
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: July 1, 1980
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Gilbert A. Felten
  • Patent number: 4179959
    Abstract: Method and apparatus for cutting extruded split tile columns in a quick, efficient manner that reduces the possibility of damage and effectively doubles cutting speed. The apparatus cuts the moving split tile column as it moves away from the extruder and includes oppositely mounted, freely movable cutting discs which roll through and cut that split tile column when moved vertically therethrough. Cutting occurs on both up and down strokes with the cutting apparatus being moved relative to the moving column to a predetermined amount to a new cutting position after each stroke. The discs can be mounted in the same plane, arranged to the column's moving direction positioned so as to just touch each other or the discs can be in two separate and slightly offset planes so that the discs can overlap.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: December 25, 1979
    Assignee: Lingl Corporation
    Inventor: Hans Lingl, Jr.
  • Patent number: 4151699
    Abstract: A method of and apparatus for producing discrete blanks from a web of foil or the like lis provided, in which the foil or the like are given continuous constrained guidance during the phase between separation of the web until transfer to a packet or packing machine. Severance from the web is carried out in at least one initial cut, followed by a main cut, during continuous constrained guidance.
    Type: Grant
    Filed: June 29, 1976
    Date of Patent: May 1, 1979
    Assignee: Focke & Pfuhl
    Inventors: Heinz H. Focke, Kurt W. Liedtke
  • Patent number: 4144780
    Abstract: A numerically controlled nibbling machine including means for controlling the feed rate of the work piece with respect to the work tool of the machine and in which the feed distance or travel of the work piece is limited by a release time in which the work tool is disengaged from the work piece according to a predetermined number of strokes of the work tool per unit of time. The improvement of the invention comprises the provision of means for determining the release time of the work tool in a single stroke of the work tool for any number of strokes of the tool, and means for automatically determining the minimum accelerations and decelerations of the work piece required for travelling the feed distance and for forming a desired feed rate value for the work piece from the determined release time of the work tool and the feeding distance of the work piece per stroke.
    Type: Grant
    Filed: November 24, 1976
    Date of Patent: March 20, 1979
    Assignee: Siemens Aktiengesellschaft
    Inventors: Gunter Bromer, Wolfgang Kanzler
  • Patent number: 4126068
    Abstract: A numerically controlled nibbling machine in which the feed distance of a workpiece is limited by a release time during which a work tool is disengaged from the workpiece according to a predetermined number of strokes of the work tool per unit of time. The nibbling machine includes drive means for the work tool, means for controlling the feed rate of the workpiece with respect to the work tool, means for determining the release time in a single stroke of the work tool for every number of strokes of the tool per unit of time, and means for automatically determining minimum acceleration and deceleration of the workpiece required for travelling the feed distance and for forming a desired feed rate value for the workpiece from the release time and the feed distance of the workpiece. The improvement of the invention comprises the means for determining the release time further comprising switch means disposed in the path of the work tool for generating a stop command signal for the drive means for the work tool.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: November 21, 1978
    Assignee: Siemens Aktiengesellschaft
    Inventor: Gunter Bromer
  • Patent number: 4030387
    Abstract: In the cutting of asbestos sheet or the like, the sheet is supported on a bed and a cutting blade is advanced through the sheet and through a narrow slot in the bed below the sheet. The cutting edge of the blade has a flat transverse profile so that the sheet is cut by the action of the blade in shearing from the sheet a strip of the same width as the blade. The cutting edge preferably makes a constant angle with sheet at the point of shearing as it moves through the sheet.
    Type: Grant
    Filed: May 5, 1975
    Date of Patent: June 21, 1977
    Inventor: Norman Alan Finnimore
  • Patent number: 4030388
    Abstract: A film severing method and apparatus is provided in which a film having first and second edges is engaged by film holding devices and the film is severed in a transverse path between such holding devices while the film is held on either side thereby, such severing including:Cutting the film at the first edge by moving a severing device into the film at a position spaced from the first edge and thereafter moving it in a first direction toward and through such first edge to form a partial cut andCompleting the severing of the film by moving another severing device in a second direction into the partial cut and thereafter through the film toward and through the second edge whereby to sever the film.
    Type: Grant
    Filed: May 14, 1976
    Date of Patent: June 21, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harold Eugene Ramsey
  • Patent number: 3986418
    Abstract: A system for making cutouts and angular cuts in stepped siding uses a punch to remove, at the desired cut location, a rectangular section including the step and a small portion of both faces adjacent the step. The punch operates in a shearing manner with cutting surfaces progressively contacting the siding as the punch is moved into the die. Final cuts of the siding are made with cutters which do not require support of the stepped portion of the siding.
    Type: Grant
    Filed: March 12, 1975
    Date of Patent: October 19, 1976
    Assignee: United States Steel Corporation
    Inventors: John F. Lang, Robert A. Wilshire, Jr.
  • Patent number: 3972215
    Abstract: A support means is provided with a pair of fixed dies aligned in spaced, horizontal relationship for receiving a metal strip having a base portion with edge portions extending in planes different from that of the base portion to be cut. Cutting die means are movably carried by the support means with actuating means connected to the movable die means for cutting the base portion and the edge portion of the metal strip supported on the spaced fixed dies with the cutting dies being shaped so that the angle cut on the base portion by the cutting die means is different from the angle cut by the cutting die means on the edge portions of the metal strip.
    Type: Grant
    Filed: February 28, 1975
    Date of Patent: August 3, 1976
    Inventor: Gene C. Elkins
  • Patent number: 3945279
    Abstract: Retarding markings are provided alongside a linear pattern to be cut out by an automatic device guided by a photoelectric scanner. The markings are disposed a short distance ahead of the changes in direction of the pattern line, which is greater than the resultant decelerating path of the advance motors from the original faster advance speed to the resultant slower advance speed. A timing circuit initiates the change in advance speed after the retarding mark is detected and a second timing circuit changes the overhang of the line-scanning photocells from an initial greater magnitude to the lesser required magnitude correspond to the slower advance speed. Acceleration marks may also be provided after directional changes in the pattern to accelerate the advance speed back to the original advance speed after the changes in directions are accomplished.
    Type: Grant
    Filed: May 7, 1974
    Date of Patent: March 23, 1976
    Assignees: Messer Griesheim GmbH, Krauss und Reichert
    Inventors: Dietrich Boehme, Gunter Hahn, Gunter Schumann, Walter Wienen, Rolf Jung