Cutting Part Way Through From Opposite Sides Of Work Patents (Class 83/51)
  • Patent number: 6401510
    Abstract: A method of stamping a part from an elongated strip of multi-layered material. The multi-layered material includes a viscoelastic intermediate layer, and upper and lower layers that are relatively rigid with respect to the intermediate layer. The method includes providing symmetrically aligned top and bottom punches each including a material displacement edge corresponding with a desired shape of the part. Each of the material displacement edges are defined by a rake surface and a part interface surface that combine to form a positive rake angle. The strip is positioned between the top and bottom punches. The top and bottom punches then shear a portion of the upper and lower layers, respectively. More particularly, symmetrical groove patterns are formed in the upper and lower layers, defining a perimeter of the part. The part is then removed from the strip along the perimeter.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: June 11, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas L. Morse, Alfred D. Nelson, Brian D. Johnson
  • Patent number: 6347896
    Abstract: Disclosed is a printer including: a fixed chassis mounted on the printer; a moving chassis being engageable with the fixed chassis between an open position and a closed position; and a cutting mode switching module for controlling a cutting mode of the printer, characterized in the cutting mode switching module comprising: a fixed blade mounted at the fixed chassis; a moving blade having an elongated pivot hole, through which pivot hole the moving blade is pivoted to a pivot end of the moving chassis such that the moving blade is shiftable within the pivot hole between a first position and a second position, and such that the fixed blade and moving blade is formed with a paper path therebetween when the moving chassis is at the closed position; a motor mounted in the moving chassis; and a crank pin engaging with and cranking the moving blade and driven by the motor to rotate in a first direction or a second direction; whereby when the moving chassis is at the closed position, the moving blade is capable of pe
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: February 19, 2002
    Assignee: XAC Automation Corporation
    Inventor: Carl Wesley Robinson
  • Patent number: 6291317
    Abstract: A method for dicing small devices including MEMS, ink jet printheads, lasers etc. The method comprises making a first pass cut into a substrate with a blade of narrow kerf and having long wear characteristics. This first pass cut is then followed with a polishing blade of wider kerf having desirable smooth cutting qualities.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: September 18, 2001
    Assignee: Xerox Corporation
    Inventors: Nicholas J. Salatino, John C. Ackerman
  • Patent number: 6271102
    Abstract: A method and system for dicing a semiconductor wafer providing a structure with greatly reduced backside chipping and cracking, as well as increased die strength. Semiconductor chip structures obtained from wafers diced according to this invention are also encompassed.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: August 7, 2001
    Assignee: International Business Machines Corporation
    Inventors: Donald W. Brouillette, Robert F. Cook, Thomas G. Ference, Wayne J. Howell, Eric G. Liniger, Ronald L. Mendelson
  • Patent number: 6237454
    Abstract: Cast metal parts are created for use in making machinery. When these parts are formed, unwanted material remains in the openings of the parts. This material, called flash, must be removed. In the method of the present invention, the cast parts are placed on a platen of a trim press that has multi-part punches attached thereto that are configured to self-align with the openings in the cast part and operative to evenly remove the flash. The invention also relates to a punch that initially breaks through the flash with a stationary punch that removes a majority of the flash inside the opening of the cast part. Next, a moving or self-centering punch self-aligns to the opening in the cast part and operates to remove the remaining flash. The inventive punch may also include a mounting base for attachment of the multi-part punches to the plate or platen of the press.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: May 29, 2001
    Assignee: Honda of America Mfg., Inc.
    Inventor: Mark Phlipot
  • Publication number: 20010001377
    Abstract: Method for the rapid cleaning of produce with minimal loss, and apparatus to perform the method. The cleaning method taught in the present application enables the rapid cleaning of produce by removing an extraneous portion therefrom, by separating the extraneous portion from the body of the produce, and by urging the cleaned produce towards a collection device. These steps are attainable, using the principles of the present invention, by a working using only one motion and one hand. To perform the method, a novel aperture knife is taught which, rendered attachable to an agricultural processing implement by an integral attachment device, enables one-handed operation by a user. The knife includes a generally planar knife body in operative combination with an elevated blade which not only enables the severing of the extraneous portion from the produce body, but separates the extraneous portion therefrom, and guides the cleaned produce body towards a collection device, for instance a picking box.
    Type: Application
    Filed: May 22, 1998
    Publication date: May 24, 2001
    Inventors: EDWARD ORTEGA, CARLOS ORTEGA
  • Patent number: 6148706
    Abstract: A device for shortening translucent double-walled plate material (20) which shortens the plate material with a substantially rectilinear cut. The plate material comprises two basically parallel synthetic plates (21, 22) which are separated from each other at a basically constant distance by a number of parallel dividing walls, enclosing a number of elongated channels (24). To avoid too much pressure on the plate material, when it is shortened, and to avoid too large an amount of chips and too much electrostatic charging of the plate material the device comprises two rotating knives (4, 5) to work into the plate material (20) from both sides. The rotating knives in accordance with the invention, have been placed slantwise behind each other and their combined penetration equals at least the thickness of the plate material (20) ensuring a complete cut through the plate material.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: November 21, 2000
    Assignee: Concin S.A.
    Inventor: Eric Bernardus Wilhelmus Witjes
  • Patent number: 6079304
    Abstract: A shingle trimming tool comprises a stationary and and a movable blades with edges. When a manually operated lever is lowered, the movable blade is mounted to reciprocate towards a closed position with the edges in contact and returns to an open position. The blade moves with a sliding action in which the reciprocating edge is driven into confrontation with the stationary edge to pinch work between the blades. When the lever is raised, then the movable blade slides back to an open position. The fixed blade and a pair of matched bell cranks are supported by a frame. The movable blade is supported by the bell cranks which hold the sharp edge of the movable blade parallel to the sharp edge of the lower blade during the entire reciprocal path traversed from open to closed position and back to the open position. The lever is connected to links provides leverage to force the movable blade down into contact with the stationary blade.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: June 27, 2000
    Assignee: Wondebar Construction Corporation
    Inventor: James David Bisceglia
  • Patent number: 5996456
    Abstract: An apparatus for punching transversely throughgoing coaxial holes in spaced walls of a workpiece has a holder supporting the workpiece and an outer tool part formed with a pair of transverse bores and displaceable between an advanced position engaged over the workpiece on the holder and outwardly flanking the walls and a retracted position spaced from the holder. An inner tool part formed with a transversely throughgoing bore is displaceable in the advanced position of the outer tool part between an advanced position engaged between the walls and with its bore coaxial with the bores of the outer tool part and a retracted position with its bore spaced from the workpiece in the holder. The outer tool part is formed with a waste passage aligned with the inner-part bore in the retracted position of the inner part.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: December 7, 1999
    Assignee: CFS Falkenroth Umformtechnik GmbH & Co.
    Inventor: Hans-Dieter Streck
  • Patent number: 5974936
    Abstract: It is the purpose of this utility process invention to allow a means to recycle the common aluminum beverage can. This is accomplished with the addition of a scribe or scribes to the circumference of the can. The depth and position of the scribe acting as a pre-conditioner, weakening the can a specific amount in a specific location, there by allowing the desired or eventually desired separation at that specific location by secondary means if required. The scribe allows the can to be separated into cylindrical sections having a very smooth and accurate cut edge. These sections may be containers similar to a cup shape, sections with both ends of the can removed and sections with the can top removed. These scribes may or may not meet. Depending upon the eventual use, the sections may remain united. These scribes may be added any time during the can's life span either before opening or after opening and emptying the original contents.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: November 2, 1999
    Inventor: Robert J. Valihura, Sr.
  • Patent number: 5957597
    Abstract: A partial cutting unit 32 is for cutting only a print tape 28 of a laminated tape 24, that is, without cutting a release tape 14 of the laminated tape 24. A blade support base 35 is mounted on a pivotal pin 34, pivotable with respect to a tape support base 33. A pair of step portions 33a, 33b is formed in the tape support base 33, one at the tip side of the tape support base 33 and the other near the pivotal pin 34. This pair of steps 33a, 33b is formed with a height H2, which is slightly smaller than the thickness of the release tape 24. A leg portion 35a for abutting against the step portion 33a is formed in the tip side of the blade support base 35. When the blade support base 35 is pivoted around the pivotal pin 34 to close against the tape support base 33, the leg portion 35a at the front tip of the blade support base 35 abuts against the step portion 33a at the tip side of the tape support base 33.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: September 28, 1999
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Shigeki Kato
  • Patent number: 5826471
    Abstract: A method for cutting a coil conductor in which a halted conductor wire 2 to be formed into a coil is served by cutting edges 5A, 5B, while simultaneously advancing a cutting edges downstream in the feed direction of the wire. Thus, a pushing back force against the conductor wire and its attendant deformation is prevented when cutting it, whereby the dimensions of the conductor wire are stabilized.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: October 27, 1998
    Assignee: Mitsubishi Denki Kabushika Kaisha
    Inventor: Mikio Iguchi
  • Patent number: 5561899
    Abstract: Apparatus for feeding an insulated electrical wire, or the like, axially with respect to a transverse plane in which a single pair of blade cutting edges are supported for movement toward and away from the axis of the wire. Each blade has a continuous cutting edge forming the periphery of an opening through the blade. The wire is advanced a predetermined distance through the aligned blade openings by a pair of conveyors on opposite sides of the plane of the blade edges. The blades are moved in opposite directions to sever a premeasured length of wire from the supply by first portions of each blade edge. The severed wire portion is then moved by the conveyors to a second axial position and the blades are again moved to cause second portions of the cutting edges to pass partially through the layer of insulation, stopping before contacting the conductor. Axial movement of the wire then causes the engaged blades to sever a slug of insulation and strip it partially or fully from the conductor.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: October 8, 1996
    Assignee: Carpenter Manufacturing Co.
    Inventors: Thomas S. Carpenter, David D. Hand, David J. Palmowski
  • Patent number: 5556213
    Abstract: A tape printer including: a printer head for printing characters, figures, etc. on a laminated tape which is formed by laminating a printing tape and a separate paper a tape releasing section for feeding the laminated tape from the tape printer and a cutter for cutting the laminated tape. A half-cut mechanism for cutting only the printing tape of the laminated tape is provided on the tape out-going side of the cutter.
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: September 17, 1996
    Assignee: Max Co., Ltd.
    Inventors: Yasunori Kudo, Manabu Shibata, Takahisa Misawa
  • Patent number: 5393294
    Abstract: Method for producing sheets of corrugated cardboard with a variable format in which a web of corrugated cardboard is removed continuously from a heating and pulling device of s conventional corrugated cardboard installation. The sheets are processed to the required format in at least one longitudinal cutting and grooving device. For this purpose the web is conveyed through a pulling device. A cross cutter cuts the sheets of corrugated cardboard from the cardboard web according to a preset format. The cardboard web is conveyed to a cross cutter for the corrugated cardboard sheets in the direction of conveyance without cutting them crosswise. When the format is changed, the area of the web of corrugated cardboard where the formats overlap is cut out by the cross cutter and removed to a waste container through a trap.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: February 28, 1995
    Assignee: BHS Corrugated Maschinen- und Anlagenbau GmbH
    Inventor: Lothar Jobst
  • Patent number: 5369060
    Abstract: In a method for dicing multi-layer composite wafers, proceeding from an upper side of the wafer, cuts are introduced into an upper layer of the wafer and, proceeding from a lower side of the wafer, cuts are introduced into a lower layer of the wafer.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: November 29, 1994
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Baumann, Juergen Kurle, Peter Eiberger
  • Patent number: 5315905
    Abstract: A method and apparatus for shaping a solid antiperspirant stick composition. The antiperspirant composition is produced in a generally cylindrical form having an oval or elliptical cross-section and the method and apparatus disclosed herein form the exposed end of the stick into a domed shape. A shaping mechanism comprises three shaped and heated cutting edges, each of which is arcuately oscillated with respect to the end of the stick within the plane of the major axis of the oval or ellipse. One pre-cut cutting edge is oscillated in one direction and makes a cut partially into one side of the exposed end of the stick. Rough cut and finish cut cutting edges are then arcuately passed through the end of the stick in the opposite direction.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: May 31, 1994
    Assignee: Bristol-Myers Squibb Company
    Inventor: Jiva R. Karavadra
  • Patent number: 5284043
    Abstract: A method for cutting and separating from a piece of sheet metal a product, comprising a first step for contouring the product while leaving a small joint such as a connecting web or micro-joint which connects the product to the sheet metal, a second step for forming a protrusion on or adjacent to the small joint by lancing, embossing, or semi-shearing, and a third step for pressing the protrusion in order to shear the small joint.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: February 8, 1994
    Assignee: Amada Manufacturing America Inc.
    Inventor: Tetsuji Hayashi
  • Patent number: 5211094
    Abstract: A base mount supports a secondary mount in surface facing relation and a pair of these mount assemblies are positioned in spaced relation to receive a pallet stringer between them. The mounts support circular cutter discs which are disposed in axially aligned pairs and also in laterally aligned pairs whereby to be capable of severing nails on opposite edges of a stringer in a single pass of a stringer through the space between the laterally spaced mounts. The base mounts support the secondary mounts and are capable of being retrofitted to existing machines. The base and secondary mounts are secured by cross plates that have a cutting edge to form a backup cutter for the cutter discs. The secondary mounts are hingedly supported on the base mounts by a cross hinge at the rear of the mounts and a spring and limit assembly is provided between the mounts to allow adjustment of the mounts for different dimensioned stringers.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: May 18, 1993
    Inventor: John L. Johnson
  • Patent number: 5163223
    Abstract: Electrical connector pins capable of providing high Hertzian stresses are made by a progressive punch press process that forms, in two stages, opposed, substantially fully rounded contact surfaces on the pins.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: November 17, 1992
    Assignee: Custom Stamping, Inc.
    Inventor: Walter W. Wurster
  • Patent number: 5161441
    Abstract: A circle shear device for cutting holes and rings in sheet metal wherein a pair of spaced apart, coaxially aligned center shafts are each provided with a cutter wheel which is mounted on a radially extended arm. In operation a metal blank is inserted between the two spaced apart center shafts and the center shafts are brought together wherein the sheet metal blank is restrained from moving by the bearing mounted supporting platform members of each center shaft. Synchronous rotation of the center shafts is achieved by a jack shaft assembly which joins the two center shafts. In a preferred embodiment, a motor is provided to power the rotation of the shafts. In an alternate embodiment, the shafts may be rotated by the use of a hand crank. A pneumatic cylinder is also provided to one of the shafts to permit vertical reciprocation of the shafts for removal and insertion of metal blanks for cutting operation.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: November 10, 1992
    Inventor: Gene R. Rowan
  • Patent number: 4985982
    Abstract: This invention relates to a process and an apparatus for cutting and trimming printed circuit board workpieces, particularly printed multilayer circuit board workpieces, which are cut to an exactly predetermined, selectable size at high speed in an operation in which the workpieces are subjected only to relatively low stresses. The workpieces are cut and trimmed and are profiled at each of their edges in a single operation. This is accomplished by means of two circular sawblades, which extend in a common plane and have interdigitating sawteeth, which preferably have diamond cutting edges. The interdigitating sawteeth of the two sawblades cut into the workpiece from opposite broadsides and the sawteeth of each of the sawblades penetrate into the workpiece only in part of its thickness.
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: January 22, 1991
    Assignee: Lohr & Herrmann GmbH
    Inventors: Hans-Gunter Lohr, Gunter Herrmann, Josef W. Mozzi, Dieter Claus
  • Patent number: 4967476
    Abstract: A tool structure including an elongate, generally "V" shaped body defining an acute angle between the body portions, wherein a generally reversible trapezoidal blade is mounted within the body to project exteriorly thereof. A flexible cable is mounted and extends from a side surface of the body, with a handle orthogonally mounted medially of its length to the cable to provide a flexible manipulatable pulling handle in association with the blade structure. A removable cover is optionally mounted overlying a forward portion of the handle encompassing the blade, wherein the cover is deflectable to avoid destruction of the blade in its association with the work piece.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: November 6, 1990
    Inventor: Daniel J. Mozeliak
  • Patent number: 4846032
    Abstract: A device separates attached multiple printed circuit boards without damaging solder connections and delicate surface mounted components attached to the boards. The device comprises a pair of disc cutters positioned in opposed alignment and minimally spaced apart for providing a bifurcated cutting edge through which commonly attached sections of the printed circuit boards are conveyed while supported by a transporter. The contact pressure on the boards is limited to the commonly attached sections as they are engaged and conveyed by the cutting edge. Minimal stress and vibrations are imparted to the boards and therefore the components connected thereon with this device. The boards are thus separated while avoiding damage to the solder connections or the surface mounted components.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: July 11, 1989
    Assignees: American Telephone and Telegraph Company, AT&T Bell Laboratories, AT&T Information Systems Inc.
    Inventors: Sompoppol Jampathom, Otto Nehring
  • Patent number: 4841826
    Abstract: A method and apparatus for shaping a solid body of soft material wherein the body is notched on one side, a rough cutter moves inwardly through the other side of the body to enter the closed end of the notch and sever body material without breaking, and a finish cutter than removes relatively little material to produce a finish cut.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: June 27, 1989
    Assignee: Precision Automation Co., Inc.
    Inventor: John Smith, III
  • Patent number: 4832834
    Abstract: A process of manufacture of a lattice configurated elastomer screen for classification, screening and washed of fragmented hard stocks of material. The process of manufacture of this lattice screen employs a cutting device with at least one rotary cutting blade. for extracting mutually spaced slots in the top and bottom layers of an elastomer sheet; with the top slots lying essentially above the bottom slots; being disposed transversely of one another. The top and bottom slots are cut at a common, intersecting depth of one another in the elastomer sheet: joining the bottom slots with the top slots; forming preferably rectangular apertures between the top and bottom slots areas of this lattice designed sifting body.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: May 23, 1989
    Inventor: Howard R. Baird, Jr.
  • Patent number: 4790464
    Abstract: Method and apparatus for cutting optical fibres, whereby said optical fibres provided with at least one protective covering, are caused to be cut by the transveral movement of two blades rigidly connected to one another and forming an angle of less than 45.degree. between them.
    Type: Grant
    Filed: February 5, 1987
    Date of Patent: December 13, 1988
    Assignee: Societa' Cavi Pirelli S.p.A.
    Inventors: Bruno Bortolin, Enrico Dotti
  • Patent number: 4781089
    Abstract: Method for longitudinal cutting of a wall of a fibrous tubular product in a step shaped profile. The apparatus comprises two parallel main blades which form radial cuts into the wall, slightly displaced from each other. One cut is made radially inward from the outer surface; and the other cut is made radially outward from the inner surface. Each cut extends toward the center of the shell wall to a depth approximately one half the thickness of the shell wall. A third cut is made within the shell wall perpendicular to and joining the other two cuts. These three cuts form a smooth step shaped cut through the wall and facilitate installation of the shell around conduit while minimizing heat loss and mechanical stresses within the wall.
    Type: Grant
    Filed: July 19, 1985
    Date of Patent: November 1, 1988
    Assignee: Isover Saint-Gobain
    Inventors: Gerard Gerber, Andre Leblond
  • Patent number: 4762039
    Abstract: A running strand of hot steel stock is severed at desired intervals by two knives which are located in a common plane and are mounted in a common holder movable transversely of the advancing strand by a double-acting hydraulic or pneumatic cylinder and piston assembly. The holder for the knives is coupled to the strand prior to start of the severing operation, and one of the knives is thereupon caused to penetrate into the material of the strand to be retracted prior to penetration, or simultaneously with penetration, of the other knife which operates in the same plane so that the stock is severed without the formation of burrs, fins or similar irregularities.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: August 9, 1988
    Assignee: Mecapec S.A
    Inventor: Karl Rimmele
  • Patent number: 4756218
    Abstract: A method of cutting panels with or stacks of panels a circular cutting saw to effect extremely neat and rapid cuts with no splintering. The saw cuts a panel in two steps, first by acting thereon through a portion of its thickness during a horizontal stroke, and then through the remaining portion of its thickness during the reverse stroke, while the direction of rotation of the saw remains unchanged and is such that the teeth thereof act successively on the two faces of the panel and press them inwardly of said panel. The saw is precisely adjustable both horizontally and vertically. Before being positioned for the first cutting step, it is displaced both vertically and horizontally to effect on the side of the panel where the cutting stroke is initiated and terminated one or more incisions compressing the panel material inwardly thereby, avoiding splintering during the subsequent cutting operations.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: July 12, 1988
    Inventors: Gino Benuzzi, deceased, by Piergiorgio Benuzzi, heir-at-law
  • Patent number: 4694722
    Abstract: A conveyor table is provided on a floor mounted support frame and a pair of tool guides are disposed horizontally and laterally above and below the conveyor table. Several readily removable tool and cutter assemblies, each having a freely rotatable, circular blade with teeth, are slidably mounted on the tool guides. Setscrews are provided on the tool and cutter assemblies to secure them on the tool guides in relatively opposing, vertically aligned pairs. Electrically powered drive units are disposed upstream and downstream of the tool and cutter assemblies to engage a sheet of wallboard, hold it against the conveyor table and move it between the opposing pairs of tool and cutter assemblies.
    Type: Grant
    Filed: August 6, 1985
    Date of Patent: September 22, 1987
    Assignee: Cardinal Industries, Inc.
    Inventors: Ronald T. Collier, Robert E. Thompson
  • Patent number: 4681005
    Abstract: A resaw has twin arbors with one to six blades mounted on each arbor. In addition, the resaw has a rotatable fence with a continuous belt along its periphery. Two side pressure rollers are mounted adjacent to the rotatable fence between an entrance to the resaw and the blades. A workbed of the resaw is made up of a series of spiked rollers. Just prior to an exit from the resaw, there is located a top roller which is mounted normal to the side pressure rollers and can move further away from or closer to the workbed. The arbors are each powered by an electric motor. The rotatable fence, the side pressure rollers and the spiked rollers are all powered by hydraulic motors connected to a single power source and all rotate at the same speed at any given time. The side pressure rollers are automatically adjustable so that they exert pressure towards the rotatable fence on any wood that is located between said rollers and said fence.
    Type: Grant
    Filed: June 13, 1985
    Date of Patent: July 21, 1987
    Inventor: Edward J. Baranski
  • Patent number: 4678279
    Abstract: A photoradiator in the form of an elongate light conducting member is formed with at least one strip of light diffusing material, spiral groove or annular groove, which serves as light radiating means. Light input into one end of the light conductor is routed therethrough to be radiated radially outwardly of the light conductor by the radiating means. Despite a small diameter and flexibility of the light conductor, the grooves, either spiral or annular, are formed accurately and efficiently with the light conductor held stable in position. The light radiation efficiency is increased by a flat reflector located at the other end of the light conductor, the pitch of the radiating means which progressively decreases toward the other end of the light conductor, and/or, in the case of grooves, the depth of the radiating means which progressively increases toward the other end of the light conductor. A protective casing hermetrically encloses the periphery of the light conductor at a spacing therefrom.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: July 7, 1987
    Inventor: Kei Mori
  • Patent number: 4644837
    Abstract: The invention relates to a device for the burr-free cutting of strip-shaped material, especially made of metal, which has, for each cut, two pairs of circular knives on axis-parallel knife shafts. The strip-shaped material is cut into by the first pair of circular knives in the first parting step and is severed in the opposite direction by the second pair of circular knives in the second parting step. The characteristic feature of the invention is that the counter-knives of the two pairs of circular knives are arranged on a common knife shaft so as to rest against one another, and that they consist of an outer rigid, especially metallic, cutting ring and of an inner annular elastomeric hub part.
    Type: Grant
    Filed: March 19, 1986
    Date of Patent: February 24, 1987
    Assignee: Karl Jungel GmbH & Co. KG
    Inventor: Werner Krus
  • Patent number: 4614138
    Abstract: A cutter for sheet materials such as plasterboard and the like which employs a pair of axially spaced, copolanar circular blades with circumferential edges in adjacent noncontacting relationship. Both blades are driven but under conditions such that an edge speed differential exists between the blades. Supported sheet material is passed between the nip region between the blades to effectuate cutting. During cutting, the sheet material is self-propelled through the nip region by the action of the blades. Very little dust is produced during such sheet cutting.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: September 30, 1986
    Inventor: James E. Altman
  • Patent number: 4561579
    Abstract: An apparatus and method for slitting an endless strip of material having substantially planar surfaces by forming a pair of adjacent grooves in each surface of the material with corresponding grooves in each surface of the material being orthogonally aligned and applying a force normal to the planar surfaces of the material and between adjacent grooves and of sufficient magnitude to shear the material along a line connecting corresponding grooves. For this purpose a pair of scoring knives for each slit are mounted in relative orthogonal alignment with respect to the planar surfaces of the material with one on each side of the material. The knives form the adjacent grooves in each surface of the material.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: December 31, 1985
    Assignee: RJR Archer, Inc.
    Inventors: William F. Fleming, III, Roger D. Jones
  • Patent number: 4487539
    Abstract: In the production of metal cans, a sheet metal body plate (blank) is scored with aligned upper and lower score lines and then formed into a cylindrical single can body. Preferably the scoring is in steps; first, scoring the upper score line using a scoring roller and an anvil wheel; and, secondly, scoring the lower score line using a second scoring roller and a second anvil wheel. Then the single can bodies are conveyed by a conveyor belt and rolled over the knife edge (parting edge) of an elongated parting rail, with the parting edge aligned with the score line and with the conveyor applying pressure on each can body to part each one on the parting edge, thereby forming two can bodies from the single can body.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: December 11, 1984
    Assignee: American Can Company
    Inventors: Frederick G. Taylor, Lawrence Casqueiro
  • Patent number: 4477537
    Abstract: A method is provided for manufacturing a burr-free blank from an elongated sheet of flat metal stock comprisingpunching a first aperture in one surface of said metal stock, said first aperture extending only partially through said stock;simultaneously forming the lower burnished land portion of said blank;punching a second aperture in the opposite surface of said metal stock, coaxial with said first aperture, said second aperture extending only partially through said stock, said second aperture being smaller than said first aperture;simultaneously forming the upper burnished land portion of said blank, causing the material of said stock to fracture between said burnished land portions and recovering said burr-free blank.The resulting burr-free metal blank exhibits a shiny upper peripheral burnished land portion, a rough, fractured intermediate peripheral portion and a shiny lower peripheral burnished land portion, said lower land portion having a smaller circumference than said upper land portion.
    Type: Grant
    Filed: September 23, 1982
    Date of Patent: October 16, 1984
    Assignee: Blase Tool and Manufacturing Co., Inc.
    Inventors: Robert Blase, John G. Blase
  • Patent number: 4459888
    Abstract: Web severance is effected between non-contacting radially opposed severance points of circular edges on rotary upper and lower members between which continuously running paper web to be slit is engaged, the space between the severance points being sufficiently less than the thickness of the paper web and so related to the physical properties of the web as to cause severance of the web as a result of web fiber failure separation fracture at the point of maximum compression.
    Type: Grant
    Filed: January 21, 1982
    Date of Patent: July 17, 1984
    Assignee: Beloit Corporation
    Inventor: Kenneth G. Frye
  • Patent number: 4436078
    Abstract: Apparatus for cutting thin laminae of stone, e.g. marble, comprising a saw having two disc blades, a bogie movable beneath the saw and having a pair of vacuum-operated slab-gripping devices each of which is adapted to support a slab upwardly on its edge, and a second bogie movable in a direction transverse to the first bogie and carrying structure for tumbling a slab supported on one longitudinal edge, through 180.degree., so that it rests on its opposite longitudinal edge.
    Type: Grant
    Filed: January 21, 1982
    Date of Patent: March 13, 1984
    Inventor: Patrick T. Bourke
  • Patent number: 4417493
    Abstract: A method for cutting off a steel plate, wherein the steel plate is heated to a temperature within the range of from 950.degree. to 1,400.degree. C. at the time of cutting off the steel plate; the heated steel plate is placed on a roller table extending horizontally and positioned at a desired position so that a side edge of the heated steel plate is in contact with the cutting edge of at least one cutting knife on the roller table. The cutting edge angle of the cutting knife is within the range of from 10.degree. to 45.degree.. The cutting knife is then moved horizontally relative to the heated steel plate, in the width direction or the length direction of the steel plate, at a cutting speed of from 10 to 1000 cm/minute, thereby cutting off the steel plate by the cutting knife in the horizontal direction.
    Type: Grant
    Filed: April 7, 1981
    Date of Patent: November 29, 1983
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Chiaki Ohuchi, Yoji Kohsaka, Hiroyoshi Suenaga
  • Patent number: 4362078
    Abstract: A method of blanking wherein an endless V-shaped groove of desired contour is formed on at least one of the top and bottom sides of a material sheet. The groove is shaped so that the external side thereof is at a right angle to the groove-cut surface of the sheet. A blank having the desired contour is then cut out of the sheet along the right-angled external side of the groove.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: December 7, 1982
    Assignee: Akzona Incorporated
    Inventors: Tatsuo Ohnishi, Takeshi Uemura, Teruo Nakajima
  • Patent number: 4350552
    Abstract: The invention relates to a method of cutting thin laminae of stone, e.g. marble, which comprises bonding a backing layer to the opposed faces of a slab of stone, supporting the slab with backing layers attached, in an upward position on its edge, cutting the slab along a cutting plane parallel to and midway between the opposed faces of the slab to a depth which is about half the depth of the slab, tumbling the slab on to its opposite longitudinal edge, and cutting through the remainder of the depth of the slab to leave a lamina of stone adhered to each backing layer. The invention also includes apparatus for carrying out the aforesaid method, comprising a saw having two disc blades, a bogie movable beneath the saw and having a pair of vacuum-operated slab-gripping devices each of which is adapted to support a slab upwardly on its edge, and a second bogie movable in a direction transverse to the first bogie and carrying means for tumbling a slab supported on one longitudinal edge, through 180.degree.
    Type: Grant
    Filed: May 8, 1980
    Date of Patent: September 21, 1982
    Inventor: Patrick T. Bourke
  • Patent number: 4347724
    Abstract: A metal bar undergoing hot rolling is sheared by a pair of shear knives which form a rounded wedge shape at a downstream end of the bar to minimize split ends and cobbles during the rolling operation. The two knives have respective, mating male and female sections which have peripheral cutting edges defining the rounded wedge shape. The shape and angular parameters of the peripheral cutting edges on the two knives provide a progressive, scissors-like, shearing action along the cutting edges from their upstream ends to their downstream tips.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: September 7, 1982
    Assignee: Inland Steel Company
    Inventors: Birchel S. Brown, Ted L. Myers, Holton C. Easter
  • Patent number: 4300604
    Abstract: A saw and chipping device to convert veneer peeler logs into pieces of lumber of dimensions to produce maximum useful products and minimum waste and comprising a pair of similar sets of saws and intervening chippers on a pair of parallel power driven arbors respectively above and below a path of travel for said logs and one arbor trailing the other a predetermined distance, said saws respectively sawing said logs in common planes from opposite sides to a depth slightly greater than half the diameter thereof to form complete cuts to form adjacent boards varying in diameter in accordance with the sections of the logs in which they occur, feed rollers power driven in directions to feed logs to said sets of saws and chippers, and auxiliary guide rollers downstream from said sets of saws and chippers provided with stepped circular surfaces above and below said path of travel, the diameters of said stepped surfaces increasing in diameter from the center toward the opposite ends of said rollers in accordance with th
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: November 17, 1981
    Inventor: Edwin H. Zimmerman
  • Patent number: 4294143
    Abstract: Two chain-type endless belts are positioned to transversely span a continuously moving strip-like web, one belt facing each of the two major web surfaces, the belts oriented at an acute angle to the longitudinal web axis. Disk-type freely rotatable cutters are mounted on the endless belts for movement across the web with the blade cutting axes aligned perpendicular to the longitudinal web axis, and the endless belts are synchronized to provide cooperation between an individual blade on one belt and a corresponding blade on the other belt to engage and shear the web in a "scissoring" action. Another endless belt engages the last cut longitudinal web edge to provide biasing against unbalanced forces parallel to the major web surfaces produced by the blades.
    Type: Grant
    Filed: October 23, 1979
    Date of Patent: October 13, 1981
    Inventor: Abraham Lieberman
  • Patent number: 4223547
    Abstract: A dieless method of hot forming a hole through a metal part comprising locally heating the part followed by indenting opposite sides of the part and extruding the displaced metal centrally of the indentations to form a thin annular wall section between the indentations and then punching out the thin wall section to complete formation of the hole.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: September 23, 1980
    Assignee: General Motors Corporation
    Inventor: Elliot J. Epner
  • Patent number: 4220272
    Abstract: Precision cutting means adapted for use in cutting, e.g., small holes along a continuous web. The novel apparatus by which the process of the invention is to be carried out comprises opposed cutting means, mounted on either side of a path through which a web to be processed is moved. Each cuts only part way through the web, the cuts from each side being in exact register and leaving a blank which is secure until it is removed by positive mechanical action.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: September 2, 1980
    Inventor: Bernard R. Danti
  • 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 90.degree. 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: 4109500
    Abstract: A slitting machine for longitudinally slitting sheet tinplate to form blanks for can bodies has two parallel horizontal shafts carrying cutter rolls conventionally arranged in pairs of overlapping rolls so as by a shearing action to slit the sheet tinplate driven to pass between the shafts. The shafts also carry further rolls which may be identical to the cutter rolls but are of a smaller diameter. Like the cutter rolls, these further rolls are arranged in pairs; however, by virtue of their smaller diameter they have a small radial clearance. By partially shearing the tinplate they therefore form the tinplate with lines of weakness parallel to the lines of slitting simultaneously made by the cutter rolls. To accommodate the machine to different thicknesses of tinplate the shaft spacing may be adjustable and/or the rolls may be readily removable for replacement by similar rolls of a different diameter.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: August 29, 1978
    Assignee: Metal Box Limited
    Inventor: Jozef T. Franek