Means To Separate Elements Of Tool Pair Patents (Class 83/482)
  • Patent number: 8887607
    Abstract: A tool change device (12) for working apparatus (10) of longitudinal shearing machines adapted for working on paper, cardboard, plastic films, various coupled materials, aluminum, fabric, non woven, glass fiber, carbon fiber and similar materials, wherein mechanical elements are provided for quick coupling/centering and extraction with translatory movement between a tool or blade holder head (16) and a tool holder (28) and with provision for a direct and quick feed of compressed air.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: November 18, 2014
    Assignee: Elio CAVAGNA S.r.l.
    Inventor: Attilio Cavagna
  • Patent number: 8875608
    Abstract: This invention provides a slitter assembly with automated adjustment of slitter elements that allows for driven rotation of elements on the associated drive shaft during operation while enabling the elements to be moved freely along the drive shaft during setup and subsequently secured to the shaft free of lateral movement. This ensures that adjustment of the slitter elements is accurate, repeatable and reliable. In an illustrative embodiment, the slitter elements each comprise a pair of coaxial members including a blade member and a locking member. The blade member contains a slitter blade and overlies the locking member which is nested therewith. The locking member directly engages the drive shaft surface with a wedge assembly structure. The members are spring-loaded with respect to each other so that the two surfaces are normally biased to cam together and exert a hoop stress on the drive shaft.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: November 4, 2014
    Assignee: Lasermax Roll Systems, Inc.
    Inventors: Steven P. Lewalski, Bruce J. Taylor
  • Patent number: 8033203
    Abstract: A cartridge is configured for slitting a mill roll in a slitting machine. The cartridge includes a first shaft mounted in bearings in a pair of endplates, with one end of the shaft having a driven yoke for rotation thereof. The first shaft includes a row of first circular blades spaced longitudinally by corresponding first spacers. A second shaft is pivotally mounted in the endplates, and is spaced parallel with the first shaft. A dovetail bar is fixedly joined to the second shaft parallel therewith. And, a row of blade holders are mounted along the dovetail bar, with each holder including a second circular blade aligned with a corresponding one of the first blades for cutting in shear a web unwound from the mill roll. The cartridge may be quickly replaced in the slitting machine for each production run thereof for alignment with cores on a corresponding arbor.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: October 11, 2011
    Assignee: NCR Corporation
    Inventors: Martin F. Johnson, Paul E. Hensley, Jr.
  • Patent number: 7703365
    Abstract: A lumber trimmer is disclosed wherein only one pair of parallel spaced-apart trim saws is mounted at one or both ends of a shaft. Each pair of trim saws is laterally movable along the shaft parallel to the longitudinal axis of lumber in the lumber trimmer. Each saw of the pair of trim saws is operably coupled with an actuator such that each saw is selectively vertically movable to trim the lumber. The pair of trim saws may be mounted to a carriage. A second actuator is operably coupled with the pair of trim saws for selectively laterally translating the pair of trim saws along the shaft.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: April 27, 2010
    Assignee: USNR/Kockums Cancar Company
    Inventors: Geoff Wight, Ken Kantymir, Deane Henderson
  • Publication number: 20080210075
    Abstract: Longitudinal slitting machine having associated upper and lower knives. Knife holders for the upper knives are supported on a crosspiece. A knife head is carried by a lowering mechanism and supports an upper knife in the form of a circular knife, the lowering mechanism including a piston having a piston rod for the knife head. A path of movement of the circular knife into a cutting position is delimited by an abutment, and a depth adjuster fixes the cutting position when the knife head is lowered. A setting instrument indicates the position of cutting edges of the upper knife relative to the lower knife with reference to the true diameter of a new circular knife. The depth adjuster is positioned in conformity with a position value determined by the setting instrument.
    Type: Application
    Filed: November 15, 2007
    Publication date: September 4, 2008
    Inventors: Falk Oberhoff, Rudolf Supe-Dienes
  • Patent number: 7387057
    Abstract: An apparatus for slitting a web moving along a path in a transport direction has a support transversely shiftable relative to the web adjacent the path, a drive shaft extending transversely of the direction adjacent the path and substantially nonmovable transversely of the path, and a drive gear on the support rotationally coupled gear to the drive shaft and shiftable along the shaft. A mount shiftable toward and away from the shaft on the support carries at least one driven gear and a driven blade fixed to and rotatable with the driven gear. Another blade is juxtaposed with the driven blade and flanks the path therewith. An actuator can shift the mount between a cutting position with the blades closely juxtaposed and the driven gear meshing with the drive gear and a retracted position with the blades separated and the driven gear out of mesh with the drive gear.
    Type: Grant
    Filed: January 17, 2004
    Date of Patent: June 17, 2008
    Assignee: Kampf GmbH & Co. Maschinenfabrik
    Inventors: Ralf Dedeken, Armin Hutzenlaub, Dietmar Kunkel
  • Patent number: 6877412
    Abstract: A blade holder for cutting machines has a blade head secured at a lowering device and a blade head housing having a chamber. The blade head has a blade holding member for receiving a circular blade. An advancing device is mounted in the blade head housing. The advancing device has an advancing piston rod and an advancing piston actuating the advancing piston rod. The advancing piston rod acts on the blade holding member for moving the circular blade between a cutting position and a ready position. The advancing piston is pneumatically actuated and mounted and guided in the chamber. A pressure spring acts on the advancing piston rod to prestress the advancing piston rod into the ready position of the circular blade. A pressing device loads the pressure spring in a direction of the cutting position of the circular blade. The pressing device is decoupled from the advancing piston rod.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: April 12, 2005
    Assignee: Dienes Werke für Maschinenteile GmbH & Co. KG
    Inventor: Rudolf Supe-Dienes
  • Patent number: 6732625
    Abstract: A vertically adjustable web slitter is adapted to be supported by a track of a web-slitting machine, and comprising an input port adapted to receive pressurized fluid. Also, a control assembly is adapted to controllably transmit the pressurized fluid into any one of a set of first fluid passageways. A cylinder is adapted to receive the pressurized fluid from one of the first fluid passageways. A piston, having a first end and a second end, is set into the cylinder and is adapted to be driven within the cylinder by the pressurized fluid. Further, a set of actuators that are adapted to be driven by pressurized fluid are separated by the piston and cylinder from the set of first passageways. Finally, the piston defines at least one second fluid passageway extending from the first end to the second end. A first flexible hose connects each second fluid passageway to a first fluid passageway and a second flexible hose operatively connects each second fluid passageway to one of the actuators.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: May 11, 2004
    Assignee: Tidland Corporation
    Inventors: Blane G. Boynton, Richard M. Holbert, Robert F. Shinn, William R. Miller
  • Patent number: 6644159
    Abstract: A trimming apparatus for metal strip has trimming heads on opposite sides of a turntable along each edge of the strip so that the trimming heads can be rotated into the trimming position or into the maintenance and blade-replacement positions. On each of the turntables as well a scrap-strip cutter is associated with the respective trimming head and the scrap-strip cutters are disposed diagonally opposite one another across the turntable and each trimming head and its scrap-strip cutter on one side of the turntable is connected to a clutch half on the opposite side of that turntable so that the scrap-strip cutter and the trimmer are driven by a common drive.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: November 11, 2003
    Assignee: BWG Bergwerk- und Walzwerk-Maschinenbau GmbH
    Inventors: Andreas Noe, Rolf Noe, Ertan Yildirimman
  • Publication number: 20030188611
    Abstract: A slitter knife system for facilitating efficient changing of cutting knives upon a slitting machine. The slitter knife system includes a main housing, a chuck housing movably positioned within the main housing, a plunger member movably positioned within the chuck housing, an arbor member rotatably attached about a portion of the chuck housing for receiving an upper knife, a clamp member positioned adjacent the upper knife, and an outer bearing attached to a distal portion of the plunger member. Utilizing a source of air pressure, a user is able to draw the plunger member inwardly so that the outer bearing forces the clamp member tightly against the upper knife. When replacement of the upper knife is required, the user releases the air pressure and a spring engaging the plunger member forces the same outwardly to allow for removal of the clamp member thereby providing unobstructed access to the upper knife.
    Type: Application
    Filed: April 4, 2002
    Publication date: October 9, 2003
    Inventor: Gary I. Solberg
  • Patent number: 6327950
    Abstract: A longitudinal cutting machine having a plurality of blade holders disposed on at least one traverse that extends over the length of the longitudinal cutting machine is provided. So that the blade holders can each be removed independently of one another from the traverse, the individual blade holders are releasably mounted by two spaced-apart claws on associated profiled members that are mounted on the traverse. One of the claws is movable relative to the blade holder and can be fixed in position by means of an adjusting unit. When the adjusting unit is loosened, then by pivoting of the blade holder about one of the two claws, which pivoting is made possible by a deflecting movement of the movable claw, the other claw is released from the associated profiled member and the blade holder is removable from the traverse.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: December 11, 2001
    Assignee: Dienes Werke für Maschinenteile GmbH & Co. KG
    Inventors: Erhard Huhn, Winfried Miebach, Rudolf Supe-Dienes
  • Patent number: 6253652
    Abstract: In a web slitter of the type used for cutting continuous webs of material, such as paper, a top slitter assembly features a hub cylinder attached to its frame. The hub cylinder supports a freely rotating hub to which the top blade of the web slitter is mounted. The hub cylinder may be raised and lowered with respect to the slitter frame so that the top blade may be lowered to, and raised from, its cutting position. A toggle support is clamped to the hub cylinder while a pin holder is attached to the slitter frame. A toggle is attached to the toggle support in a pivoting fashion. Housed within the pin holder is a sliding pin and a compression spring. The compression spring resists the movement of the pin towards the hub of the web slitter. The pin may be extended so that it engages a notch in the hub. When the hub cylinder is raised, the toggle may be pivoted so that it abuts the end of the engaged pin against the action of the compression spring. As a result, the pin is maintained in engagement with the hub.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: July 3, 2001
    Assignee: Valmet Corporation
    Inventors: James Dax, Jeffrey Knutson
  • Patent number: 6058818
    Abstract: Rotary knife apparatus used in connection with a pouch form, fill and seal machine capable of handling a substantially wide range of pouch sizes or variations in pouch fills. The apparatus includes major and minor knife hubs cantilevered on respective shafts and driven by a continuous backwrapped chain or timing belt. Rigid knife blades are mounted to interchangeable knife blocks on the major knife hub having varying radial dimensions to accommodate varying pouch chordal distances. The minor knife hub is laterally adjustable relative to the major knife hub along a fixed path to accommodate the substantial changeover.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: May 9, 2000
    Assignee: R.A. Jones & Co. Inc.
    Inventor: Paul E. Dieterlen
  • Patent number: 5964136
    Abstract: A trimming shears for sheets and strips having two shears frames arranged opposite one another and on supports and being rotatable about a central vertical axis. A pair of vertically stacked adjustable roll blades are mounted in each shears frame at diagonally opposite horizontal corners of the shears frames. The roll blade pairs are rotary driven by gears and couplings to cut the sheet or strip edges. The roll blade pairs are adjustable both vertically and horizontally to accommodate different material thicknesses and widths. The roll blade pairs are arranged in the shears frames such that when the shears frames rotate 180.degree. about the central vertical axis, the position of the roll blade pairs is transposed--with the first roll blade pair taking the position of the second roll blade pair.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: October 12, 1999
    Assignee: Mannesmann Aktiengesellschaft
    Inventor: Gerhard Bittner
  • Patent number: 5713257
    Abstract: A stackable compact knife cutting assembly employing an elongated pneumatic piston/piston rod assembly wherein the elongated piston member is provided with an elongated preformed elastomeric piston ring member disposed in a groove portion thereof and wherein a cutting assembly includes a housing member and arm portions having a slot for receiving a shaft of the rotating knife member and a bearing surface for guiding and contacting bearing surfaces of the knife member to maintain the perpendicular plane thereof to the rotating axis of the cutting knife member.
    Type: Grant
    Filed: March 23, 1993
    Date of Patent: February 3, 1998
    Inventor: Rudolph Fischl
  • Patent number: 5359916
    Abstract: A perforator has a perforator disk rotatably seated in a U-shaped bearing bracket. The bearing bracket is movable into and out of the path of movement of a piece to be perforated by a piston-cylinder unit which is actuated from either side of the piston. The piston-cylinder unit is housed in a fastening element which can be connected to a machine frame. The bearing bracket has guide bolts which extend into the fastening element to secure the bearing bracket against rotation in respect to the fastening element. The fastening element comprises a cylinder having a blind bore extending from the side of the fastening element facing the U-shaped bearing bracket in which a piston having seal rings is sealingly guided in a displaceable manner.
    Type: Grant
    Filed: January 8, 1991
    Date of Patent: November 1, 1994
    Inventor: Werner Bonnet
  • Patent number: 5247865
    Abstract: Apparatus for subdividing a running web into narrower webs has a counterknife which is driven to rotate about a substantially horizontal axis. A second knife is freely rotatably mounted in a holder at a level above the counterknife. The holder is carried by the lower end of a vertically movable and turnable rod-like guide which can be moved up and down by a single-acting fluid-operated motor in cooperation with two springs or sets of springs. When the guide reaches its lower end position, the motor causes a conical end face at the lower end of a split sleeve to engage a complementary conical face at the upper end of a fixed guide member for the guide, whereby the sleeve clampingly engages the guide and locks it to the stationary cylinder of the motor so that the second knife is fixedly held at the selected level for any desired interval of time.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: September 28, 1993
    Assignee: E. C. H. Will GmbH
    Inventors: Holger Kroger, Dieter Stolley
  • Patent number: 5146827
    Abstract: A slitter moving mechanism includes an upper and a lower blade unit with an upper and lower blade respectively, the upper blade being movable between a slitting position to slit a web in a feed direction and a retracted position wherein the web can pass between the blades without being slit; a supporting member vertically and laterally movable within predetermined ranges and rotatably supporting the upper blade, a biasing member for upwardly biasing the supporting member and generating a coupling force for laterally moving the upper blade in a separating direction away from the lower blade; and guide member for restraining lateral movement of the upper blade in the separating direction beyond a predetermined distance and for guiding the vertical movement of the supporting member between the slitting and retracted position; the upper blade unit including a lowering device for lowering the supporting member and for generating another coupling force to swing the upper blade into contact with the lower blade, the
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: September 15, 1992
    Assignee: Nippon Steel Corporation
    Inventors: Fumito Komatsu, Hiroyasu Shimokawa
  • Patent number: 5131304
    Abstract: Upper blade holder intended for shear cutting of materials that run in a plane by means of a revolving pair of blades, wherein the toe-in angle of the upper blade can be set by means of a control prism. The upper blade holder comprises an upper blade journalling supported from both sides of the blade, which said journalling can be replaced without tools. The upper blade holder further comprises a protective cover of the upper blade, which said cover can be replaced without tools. This blade cover, together with the frame of the upper blade holder, encloses the upper blade and the lowering arms for the upper blade journalling. Moreover, the upper blade journalling comprises an actuator, by means of which the blade is displaced to the cutting position.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: July 21, 1992
    Assignee: Valmet Paper Machinery Inc.
    Inventor: Antti Paavola
  • Patent number: 5098366
    Abstract: A machine for cutting filing folders to provide identification tabs which includes the use of two rollers, a cutter roller and an anvil roller. The cutter roller has a plurality of surface cutters spaced circumferentially to cut identification tabs selectively at each end and centrally of a folder. The anvil roller has clearance areas, and also an anvil area which will cooperate with one of the surface cutters depending on the circumferential orientation of the cutter roller. The machine provides for a gear drive for the rollers and a mechanism for lifting and adjusting the orientation of the cutter roller to effect cutting of the file edges with one of the surface cutters.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: March 24, 1992
    Inventor: Richard H. Gressman
  • Patent number: 5083489
    Abstract: A web slitting machine for cutting a web or roll of material includes an upper carriage assembly joined to a lower blade holder assembly by a selectively removable guide key which is milled to provide a predetermined cant angle for the blade. The blade is lowered into position by a piston which is rectangular and includes a torsion-resisting sleeve to prevent rotation of the piston about its vertical axis. A pneumatic control provides a plurality of control modes whereby the blade may be raised and lowered with or without locking the upper carriage assesmbly to its transverse bar and vice-versa. A unique side shift adjustment is provided whereby the blade may be shifted to a half-stroke position and the upper carriage locked when the blade is positioned against a lower knife. This ensures that the pressure of the blade against the knife is the pressure exerted at the mid point of the stroke.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: January 28, 1992
    Assignee: Tidland Corporation
    Inventors: John W. Tidland, Reinhold A. Schable, Casey M. Vander Bom, Borendra K. Biswas, William R. Miller
  • Patent number: 5069101
    Abstract: The invention relates to a device for reducing the thickness of an edge (2) of a board web (3) or board sheets, comprising a cutting blade (1); and structure for supporting, positioning and rotating the cutting blade and for guiding the edge (2) to be thinned with respect to the cutting blade (1). To provide a mechanically simple device construction of good adjustability, the cutting blade (1) is disclike; and the edge guide comprises a lower roll (4) and structure (5) for tightening the edge to be thinned against the lower roll.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: December 3, 1991
    Assignee: Yhtyneet Paperitehtaat Oy Walki-Pakkaus
    Inventor: Pertti Kleemola
  • Patent number: 5058475
    Abstract: A web slitting machine for cutting a web or roll of material includes an upper carriage assembly joined to a lower blade holder assembly by a selectively removable guide key which is milled to provide a predetermined cant angle for the blade. The blade is lowered into position by a piston which is rectangular and includes a torsion-resisting sleeve to prevent rotation of the piston about its vertical axis. A pneumatic control provides a plurality of control modes whereby the blade may be raised and lowered with or without locking the upper carriage assembly to its transverse bar and vice-versa. A unique side shift adjustment is provided whereby the blade may be shifted to a half-stroke position and the upper carriage locked when the blade is positioned against a lower knife. This ensures that the pressure of the blade against the knife is the pressure exerted at the mid point of the stroke.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: October 22, 1991
    Assignee: Tidland Corporation
    Inventors: John W. Tidland, Reinhold A. Schable, Casey M. Vander Bom, Borendra K. Biswas, William R. Miller
  • Patent number: 5025693
    Abstract: A web slitting machine for cutting a web or roll of material includes an upper carriage assembly joined to a lower blade holder assembly by a selectively removable guide key which is milled to provide a predetermined cant angle for the blade. The blade is lowered into position by a piston which is rectangular and includes a torsion-resisting sleeve to prevent rotation of the piston about its vertical axis. A pneumatic control provides a plurality of control modes whereby the blade may be raised and lowered with or without locking the upper carriage assembly to its transverse bar and vice-versa. A unique side shift adjustment is provided whereby the blade may be shifted to a half-stroke position and the upper carriage locked when the blade is positioned against a lower knife. This ensures that the pressure of the blade against the knife is the pressure exerted at the mid point of the stroke.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: June 25, 1991
    Assignee: Tidland Corporation, a Washington Corp.
    Inventors: John W. Tidland, Reinhold A. Schable, Casey M. Vander Bom, Borendra K. Biswas, William R. Miller
  • Patent number: 4916991
    Abstract: A punching and longitudinal cutting device for rotary folders includes two pairs of opposite web feeding rollers fixedly arranged on shafts. One shaft in a first pair carries an edge trimming blade and a punching or perforating blade and is adjustable in radial direction relative to the other shaft by means of cams controlled by a control shaft. The angular position of the cams is adjustable so that the one shaft can be adjusted either in parallel or in an inclined position relative to the other shaft. The other shaft is axially adjustable relative to the frame. The other shaft supports a counter blade cooperating with the edge cutting blade, a counter roll and a carrier for supporting two coplanar counter rolls cooperating with the punching or perforating blade. The coplanar counter rolls are axially displaceable on the carrier and held in a fixed position relative to the frame.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: April 17, 1990
    Assignee: VCB Kombinat Polygraph Werner Lamberg
    Inventor: Klaus Hertrich
  • Patent number: 4905554
    Abstract: An improvement in cutters used in the field of paper manufacturing consisting in that the support-bearing for the knife is connected to a raising and lowering device through a structure elastically deformable and able to impart elastically opposing movements to the knife. These movements are essentially motions of torsion which allow compound movements thereby providing continuous engagement between the knives and the counter knives during rotation. Said elastic structure consists of at least one rectangularly shaped elongated blade formed of steel.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: March 6, 1990
    Assignee: Elio Cavagna s.r.l.
    Inventor: Elio Cavagna
  • Patent number: 4887502
    Abstract: A machine for slitting metal sheet has a bridge-type frame provided with upper and lower beams supported on posts. In the space between the two beams are upper and lower powered arbors and also upper and lower storage arbors which align respectively with the upper and lower powered arbors. Each powered arbor supports and turns several knives which are mounted on hubs along those arbors, and these knives when not needed may be moved, along with their hubs, onto the aligned storage arbors. Each knife is captured in a carriage which moves along one of the beams and contains back-up rollers which bear against the knife to prevent its arbor from deflecting under the spreading force exerted by the metal sheet as it is slit. The hubs have a wide stance, and accordingly the knives on them do not acquire a wobble when the hubs are secured on their respective arbors; yet notwithstanding the wide stance, the knives may be brought quite close together.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: December 19, 1989
    Assignee: Red Bud Industries, Inc.
    Inventor: Kenneth Voges
  • Patent number: 4876933
    Abstract: A slitter holder has a slitter blade support rod that can be moved relative to a stationary position. The slitter holder comprises a moving mechanism for moving the slitter blade support rod relative to the stationary portion between a slitter blade operation position and a slitter blade rest position, and a clamping mechanism for clamping the slitter blade support rod to the stationary portion when the slitter blade operation position.
    Type: Grant
    Filed: March 22, 1988
    Date of Patent: October 31, 1989
    Assignee: Meisan Co., Ltd.
    Inventor: Yoshinori Tahara
  • Patent number: 4824428
    Abstract: The present invention is related to an improvement to machines or equipments performing the cutting and/or the creasing of materials in a laminar form, used in different fields. This invention is characterized by systems or means including, in association with a bearing structure and at least an operative unit, means to regulate the flow rate of a pressurized fluid, and means to regulate and adjust the sliding guides subject to wear, particularly for torsionally stressed parts. This invention is also related to means suitable to secure good protective conditions and an airtight seal.
    Type: Grant
    Filed: June 3, 1987
    Date of Patent: April 25, 1989
    Assignee: Elio Cavagna S.R.L.
    Inventor: Elio Cavagna
  • Patent number: 4779500
    Abstract: Apparatus for cutting sheet material such as cloth as the material lies on a supporting surface having opposite sides comprising an elongated track adapted to extend across the supporting surface between the sides, the track having an operative surface over which the sheet material lies during cutting thereof, and a cutter operatively associated with the track for movement in opposite directions along the track for cutting the material.
    Type: Grant
    Filed: September 19, 1986
    Date of Patent: October 25, 1988
    Assignee: Eastman Machine Company
    Inventors: Lester C. Bennett, John H. Buscher, Andrzej Nalecz
  • Patent number: 4741234
    Abstract: A slim knife unit includes a guide member having an L-shaped body which supports an elongated fluid actuator comprising a piston connected by piston rods to a base member having a sliding track connection to a removable knife holder. The knife holder has spaced walls defining a slot which receives a circular knife supported by a bearing mounted on a spacer bushing clamped between the walls by a center support screw. The guide member has a linear track which cooperates with the rods to guide the knife holder, and a releasable latch secures the knife holder to the base member. The guide member also has a linear track which guides a clamp member movable by a screw for securing the knife unit to a support bar.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: May 3, 1988
    Inventor: Antonio P. Colombo
  • Patent number: 4559855
    Abstract: In a copier with a copy sheet output slitter for slitting the copy sheets outputted by the copier into a selected plural number of smaller sub-sheets cut in the direction of movement of the outputted copy sheets, and wherein the output slitter also optionally provides uncut copy sheet output, and provides a transport path for both cut and uncut copy sheet output, the improvement wherein the output slitter comprises a plurality of first generally cylindrical metal rollers rotatably driven on a first shaft and a second plurality of generally cylindrical metal rollers on a second shaft parallel to and spaced from the first shaft, the spacing and the diameters of these rollers being such that the first rollers interdigitate the second rollers, the first and second rollers having sharpened opposing radial end surfaces selectively forming paper slitting shears therebetween by end-abutting selected ones, or none, of the first and second rollers by selective movement of rollers along the axis of at least one of the s
    Type: Grant
    Filed: July 23, 1984
    Date of Patent: December 24, 1985
    Assignee: Xerox Corporation
    Inventor: Richard A. Schieck
  • Patent number: 4474096
    Abstract: A rotary knife holder for a longitudinal slitter in which a rotary knife disc 8 is displaceable relative to a second rotary knife disc 10, co-operating therewith, by separate pneumatic cylinders 12 and 14 to which air is supplied by a common controllable feed line 26 against a resilient restoring force initially radially and then axially. To achieve instant response, to permit the feed speed and feed force for the cylinder 14 to be as independently adjustable as possible and, in addition, to avoid any slip-stick effect in the axial feed movement, an adjustable reducing valve 38 is connected prior to the cylinder 14. This reducing valve 38 is double-acting and is filled with a damping fluid which, during the feed stroke, is expelled through a throttle member 50 into an air vessel 52.
    Type: Grant
    Filed: November 10, 1982
    Date of Patent: October 2, 1984
    Assignee: Dr. Otto C. Strecker Kommanditgesellschaft
    Inventor: Horst Muller
  • Patent number: 4438673
    Abstract: A slitter apparatus for cutting a continuous web is disclosed comprising a slitter blade and a slitter mounting bracket. The bracket comprises a threaded depth-post assembly, a spring unit for maintaining the desired tension at the cutting surface, and a dove-tail spring-loaded base.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: March 27, 1984
    Assignee: Appleton Papers, Inc.
    Inventors: Roy O. Noffke, Thomas G. Engel
  • Patent number: 4434695
    Abstract: A holder for a roller slitting knife is provided comprising a first selectively-operable piston assembly including a first piston and a first piston cylinder housing. The first piston has a non-circular, cross-sectional portion preferably configured as a curved triangle of constant diameter received in the mating bore of the housing. A second selectively-operable piston assembly including a second piston and a second piston housing is mounted to the first assembly and disposed for operation in a direction transverse to operation of the first piston assembly. A roller slitting knife is mounted to the second piston assembly whereby the knife is selectively positioned for operation upon selective operation of the first and second piston assemblies.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: March 6, 1984
    Assignee: Dienes Werke fur Maschinenteile GmbH & Co. KG
    Inventor: Peter Wingen
  • Patent number: 4385426
    Abstract: An apparatus and method for cutting a flexible hose which has an axially extending helically wound reinforcing wire during continuous forming of the hose around a mandrel are provided wherein the apparatus comprises, means for determining length increments of the formed hose, a pair of cooperating cutters for cutting the formed hose based on each determined length increment with the cutters comprising a rotary cutter for cutting the flexible portion of the hose and a chisel cutter for cutting the wire of the hose and with the cutters being operatively connected to the determining means, a first and a second fluid powered cylinder for operating the cutters, first connecting means operatively connecting the first cylinder to the rotary cutter, second connecting means operatively connecting the second cylinder to the chisel cutter, and control means for sequentially actuating the cylinders in response to each determined length increment of the formed hose.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: May 31, 1983
    Assignee: Dayco Corporation
    Inventor: Frank A. Vitellaro
  • Patent number: 4380945
    Abstract: Rigid support for adjustable slitter blade heads enables permanent factory setting of slitting overlap and the rake and toe-in angles. The upper blade is mounted on its blade head for both radial and axial movement relative to the lower blade without requiring resetting of the blade overlap and rake and toe-in angles. The blades are replaceable without requiring resetting of the blade cutting overlap and rake and toe-in angles. Full adjustment of the blade supporting heads across the web path is provided for. Setting efficiency is greatly improved.
    Type: Grant
    Filed: January 26, 1981
    Date of Patent: April 26, 1983
    Assignee: Beloit Corporation
    Inventors: Gerald A. Guild, Kenneth G. Frye
  • Patent number: 4346635
    Abstract: A slitter and readily removable head includes a drive housing and an idle housing projecting from a base with the arbors for the slitting knives extending between the housings. The lower arbor is journaled in vertically movable blocks with a jack system in the base thus moving the lower arbor. The idle housing and arbors are movable on the base as a unit away from the drive housing so that the idle housing and arbors may readily be removed and replaced. The lower arbor journal block of the idle housing includes a T-slot socket engageable with one or more jacks at a certain horizontal position so that arbors of different length may be employed. The idle housing and arbors forming the removable head contain no gearing, jacks, jack drive connections or fluid or electrical lines requiring connection or disconnection. A turntable may be employed to move the disconnected head to a storage or retooling location.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: August 31, 1982
    Assignee: Loopco Industries, Inc.
    Inventors: Ferdinand A. Krauss, Ivan S. Ganyard, Raymond E. Sabbatis
  • Patent number: 4326440
    Abstract: This cutting carriage for manufacturing pneumatic tires, comprises improvements allowing high-resistance steels to be cleanly cut at the smallest angles. The cutting carriage is characterized by a geometry allowing the ideal cutting conditions to be brought together for all types of fabric: large-diameter cutting disk, pivotable mobile assembly, optimum fixed clearance angle in all cases. The support mechanism during the cutting travel, and the disengagement mechanism during the return travel are provided by pneumatic members.
    Type: Grant
    Filed: November 20, 1979
    Date of Patent: April 27, 1982
    Assignee: Ems Industrie
    Inventor: Michel Harmant
  • Patent number: 4313359
    Abstract: A device cuts vertically fed paper against a cutting edge by means of a carriage driven cutting wheel. There is a chute means downstream from the cutting edge and secured to a pivotable guideway bar, rotated by movement of the carriage during cutting operation. The paper is held against the cutting edge during cutting on one side by the chute means which tilts the paper to be cut toward a deposit tray and on the other side by a pivotable flap biased by a pressure roller mounted on the carriage. In the non-cutting mode, the flap and chute are substantially coextensive to help provide a gap-free pathway for paper being fed into the device.
    Type: Grant
    Filed: June 3, 1980
    Date of Patent: February 2, 1982
    Assignee: Siemens Aktiengesellschaft
    Inventor: Miroslav Smoravek
  • Patent number: 4269097
    Abstract: A corrugated paperboard slitter has at least one rotatable shaft with a plurality of slitter or scorer heads slideably received on the shaft. A means is provided adjacent each of the shafts for positioning heads individually or as a group by way of a shifter. A mechanism moves the shaft between an operative slitting or scoring position and an adjusting position wherein the heads can be engaged by the positioning means.
    Type: Grant
    Filed: April 5, 1978
    Date of Patent: May 26, 1981
    Assignee: Molins Machine Company, Inc.
    Inventor: S. Stephen Linn
  • Patent number: 4267754
    Abstract: Apparatus for trimming the end portion of a pneumatic tire carcass ply when the ply is mounted on a carcass building drum includes a cutting tool movable radially with respect to the drum and a backing roller that swings in and out of a position behind the end portion of the carcass ply. The backing roller thus provides a firm back-up for the cutting tool while it is cutting the carcass ply, but the roller can be swung to and out-of-the way position while other operations are performed on the carcass.
    Type: Grant
    Filed: November 7, 1979
    Date of Patent: May 19, 1981
    Assignee: The General Tire & Rubber Company
    Inventors: Michael C. Allaman, Leo T. Bailey, Richard E. Hudgins
  • Patent number: 4263827
    Abstract: An apparatus for the longitudinal cutting into stripes of a tape of sheet material fed to be forwarded continuously while it is pinched between a blade and a counter-blade; said blade is a circular disc idly pivoted on a first supporting structure and said counter-blade is a ball supported to turn about its own center by a second supporting structure.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: April 28, 1981
    Inventor: Ettore Pontarollo
  • Patent number: 4257299
    Abstract: Apparatus for cutting a running web of paper or the like has a rotary disk-shaped first knife and a driven counterknife. The first knife is rotatable on a shaft which constitutes the piston rod of a double-acting pneumatic cylinder and piston unit. The cylinder of such unit is connected with a second piston rod forming part of a single-acting cylinder and piston unit. The control system for the two units includes a shutoff valve which can admit compressed air to the single-acting unit whereby the pressure in a first conduit which connects the source of compressed air with the single-acting unit rises when the second piston rod reaches an end position in which the marginal portion of the first knife overlaps but is remote from the marginal portion of the counterknife. A second conduit thereupon admits compressed air to the double-acting unit in order to move the first knife axially against the counterknife.
    Type: Grant
    Filed: May 11, 1979
    Date of Patent: March 24, 1981
    Assignee: E. C. H. Will (GmbH & Co.)
    Inventor: Kurt Aykut
  • Patent number: 4257298
    Abstract: Apparatus for cutting paper sheets wherein a first knife, which is freely rotatable on a shaft, is movable sideways toward and away from a driven counterknife. The shaft is reciprocable in a carrier which is connected with one end of a reciprocable and turnable piston rod. The piston rod extends into a cylinder and is reciprocable by a spring and a membrane-like piston. The orientation of the first knife with respect to the counterknife can be changed by turning the piston rod with reference to the cylinder so that the piston rod can assume and is held in any one of several angular positions. To this end, the piston rod is rigidly connected with a radially extending projection which is disposed between two rollers mounted in the cylinder for movement at right angles to their axes. One of the rollers is biased against one side of the projection by a helical spring, and the other roller is movable at right angles to its axis by an adjusting screw which meshes with the cylinder.
    Type: Grant
    Filed: May 11, 1979
    Date of Patent: March 24, 1981
    Assignee: E. C. H. Will (GmbH & Co.)
    Inventor: Kurt Aykut
  • Patent number: 4254677
    Abstract: A slitter mechanism for slitting elongated webs of material into narrower webs by operative blades on parallel shafts. Inoperative blades are provided in an idle zone on said shafts. The blades in the idle zone are movable out of contact with each other without interfering with the mating relationship of the operative blades.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: March 10, 1981
    Assignee: Molins Machine Company, Inc.
    Inventor: Donald J. Evans
  • Patent number: 4252044
    Abstract: An automatic cutter positioning device in a gang slitter consisting of a frame assembly having an upper frame including rails, a lower frame including rails, and side frames. Cutter heads are slidably mounted to the upper and lower rails. Cutter shaft journalling cases are vertically slidably mounted on each cutter head. Spline shafts journalled by the side frames provide driving force to the cutter shafts through gears and belts. The cutter heads are moved so that the forward head moves faster then the rearward head.
    Type: Grant
    Filed: February 15, 1979
    Date of Patent: February 24, 1981
    Assignee: Sumikura Industrial Company, Limited
    Inventors: Risaburo Yamashita, Toshiyuki Muramatu
  • Patent number: 4238982
    Abstract: A sheet perforator head having a perforating wheel rotationally supported on a solenoid-operated, toggle-actuated leverage arm and capable of perforating according to program.
    Type: Grant
    Filed: July 13, 1979
    Date of Patent: December 16, 1980
    Inventor: Vernon A. Mock
  • Patent number: 4232577
    Abstract: In a slitting apparatus for a web of material such as paper, comprising a circular knife which, in its operation position, co-operates with one of a plurality of counter-blades defined at the periphery of a grooved roller, the rotary axis of the knife in the operative position of the latter is inclined at an acute angle to the roller axis.
    Type: Grant
    Filed: February 2, 1979
    Date of Patent: November 11, 1980
    Assignee: Windmoller & Holscher
    Inventors: Wilfried Wallmann, Manfred Menzel, Dieter Peschel
  • Patent number: 4224847
    Abstract: A tool positioning apparatus which is adapted to position by numerical control a plurality of pairs of tools attached to a pair of parallel shafts so that longitudinal slits, scores or the like may be produced along a web of board such as corrugated board conveyed through between said pair of shafts is provided with a tool positioning apparatus, said apparatus comprising tool feed control devices which are provided correspondingly to the number of said pairs of tools and are movable respectively on a guide member disposed parallel to said shafts by driving motors which are numerically controlled by a positioning controller and which have shifters insertably engageable with pairs of tool holders corresponding thereto respectively on which said pairs of tools are fixed; and a moving device which enables said shifters to engage with and disengage from simultaneously said pairs of tool holders corresponding thereto respectively.
    Type: Grant
    Filed: October 12, 1978
    Date of Patent: September 30, 1980
    Assignee: Rengo Co., Ltd.
    Inventor: Masateru Tokuno