Joint Structure Patents (Class 139/383AA)
  • Patent number: 6162518
    Abstract: The invention relates to a length of textile, especial as a basis for papmaking machine coverings, the length of textile containing structural threads (8, 9, 10, 11) and viewed width-wise being composed at least in part of several partial lengths (6, 7) which are located next to one another and which are bonded to one another on their edges (12, 13). The invention is characterized in that the partial lengths (6, 7) on their edges (12, 13) have projecting thread sections (14, 15) which fit into one another with overlapping, and that at least one connecting thread (16) is placed over the thread sections (14, 15) and is bonded to the thread sections (14, 15). The invention relates furthermore to a process for producing one such textile length.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: December 19, 2000
    Assignee: Thomas Josef Heimbach Gesellschaft mit beschrankter Haftung & Co.
    Inventor: Stefan Korfer
  • Patent number: 6152187
    Abstract: A weaving machine arrangement includes a heald frame weaving machine and, arranged on both sides of the latter, two sets of accessory equipment. The warp thread set of the heald frame weaving machine is divided into a first set and second and third warp thread sets. The second and third warp thread sets are used in order to form extended turning-fold areas in the tubular-woven material. The accessory equipment forms patterns for the terminating positions of the weft threads in these areas, strong seaming functions are obtained in the tubular-woven material. Cut-off thread ends are anchored by heat action. The degree of automation is increased in relation to conventional manufacturing by virtue of the fact that the seaming function can be carried out in the heald frame weaving machine itself.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: November 28, 2000
    Assignee: Texo AB
    Inventor: Bo Lindblom
  • Patent number: 6148870
    Abstract: A weaving machine arrangement incorporates a shaft frame machine and, arranged on both sides thereof, two Jacquard machines. The weaving machine arrangement is coordinated, and first warp threads for the woven material are obtained from the shaft frame weaving machine and second warp threads from the Jacquard machines. The second warp threads are used to form spread-out turnover fold areas in the tubular material. The Jacquard machines form patterns for the closing locations of the weft threads in the turnover fold areas. By using spread-out turnover fold areas and spreading the closing locations of the weft threads in these areas, high-strength piecing functions are obtained in the tubular weave.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: November 21, 2000
    Assignee: Texo AB
    Inventor: Bo Lindblom
  • Patent number: 6117274
    Abstract: An on-machine-seamable multi-axial press fabric for the press section of a paper machine is made from a base fabric layer assembled by spirally winding a fabric strip in a plurality of contiguous turns, each of which abuts against and is attached to those adjacent thereto. The resulting endless base fabric layer is flattened to produce first and second fabric plies joined to one another at folds at their widthwise edges. Crosswise yarns are removed from each turn of the fabric strip at the folds at the widthwise edges to produce unbound sections of lengthwise yarns. An on-machine-seamable base fabric, having seaming loops along its widthwise edges, is disposed between the first and second fabric plies of the flattened base fabric layer. The seaming loops extend outwardly between the unbound sections of the lengthwise yarns from between the first and second fabric plies.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: September 12, 2000
    Assignee: Albany International Corp.
    Inventor: Steven S. Yook
  • Patent number: 6089280
    Abstract: A weaving machine arrangement incorporates a shaft frame machine and, arranged on both sides thereof, two Jacquard machines. The weaving machine arrangement is coordinated/controllable and first warp threads for the woven material are obtained from the shaft frame weaving machine and second warp threads are obtained from the Jacquard machines. A tubular material is formed from top and bottom plies which are connected by turnover fold areas. The second warp threads are used to form the spread-out turnover fold areas in the tubular material. The Jacquard machines are controlled to form patterns for closing locations of the weft threads in the turnover fold areas. By using spread-out turnover fold areas and spreading the closing locations of the weft threads in these areas, high-strength piecing functions are obtained in the tubular weave. Also, the level of automation is increased in relation to conventional production.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: July 18, 2000
    Assignee: Texco AB
    Inventor: Bo Lindblom
  • Patent number: 6079454
    Abstract: An opened ended, endless woven papermaker's fabric having a plurality of longitudinal yarns and a plurality of transverse yarns woven in a selected weave pattern to form a fabric body and seaming loops, the fabric characterized by a longitudinal yarn weave repeat having selected yarns woven as the seaming loops and selected yarns woven in the fabric body and defining a fabric edge.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: June 27, 2000
    Assignee: AstenJohnson, Inc.
    Inventors: Henry J. Lee, Billy Summer
  • Patent number: 6065505
    Abstract: A stitched seam for high-tensile woven fabric strips, in particular for dryer screen fabric for paper machine clothing, wherein the warp thread loops of the two fabric sections to be interconnected are connected at the location of the common seam by a closure wire. At least one of the two outer regions of the two fabric strip sections to be interconnected comprises a worked-in helix at the location of the seam. Each of the helices embraces at least one weft thread and the closure thread. The other region of the stitched seam of the ends of the two fabric strip sections consists of the loops formed by the warp threads of the fabric.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: May 23, 2000
    Inventor: Gisela Fickers
  • Patent number: 6016851
    Abstract: A method and apparatus for providing warp thread ends as auxiliary weft in a seam weaving device is disclosed and where the warp thread ends are connected to an adhesive seam and a weft thread bundle is formed in the warp thread ends. An auxiliary shed is then formed in the weft thread bundle for successively releasing the warp thread ends from the weft thread bundle. After being released from the weft thread bundle, each successive warp thread end is separated from the warp thread ends which are retained by the weft thread bundle and then cut from the adhesive seam. This allows the warp thread end to then be withdrawn from the auxiliary shed to be provided as an auxiliary weft in a seam.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: January 25, 2000
    Assignee: WIS Seaming Equipment, Inc.
    Inventor: Christian Preuner
  • Patent number: 6000441
    Abstract: An endless woven papermaker's fabric of having warp yarns in at least two layers and continuous weft yarns in at least two layers. The warp and weft yarns are interwoven to form a fabric where the first warp yarn layer is adjacent to the second warp layer and the weft yarns define seam loops at two ends of the fabric. Each end of the fabric has at least one warp yarn which is free of interweaving with the weft yarns and is removed to form the seam loops.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: December 14, 1999
    Assignee: Asten, Inc.
    Inventors: Henry J. Lee, Billy Summer
  • Patent number: 6001443
    Abstract: A temporary seaming aid for use in seaming a dryer fabric, comprising complementary parts (39) attached to two portions (31, 32) of a dryer fabric. The complementary parts are adapted for cooperation and enable the fabric ends which have interdigitating formations (33) thereon to engage. Engagement of the interdigitating formations allow a pintle wire (34) to be inserted therein to form a flexible joint resulting in seaming of the dryer fabric. The entire temporary seaming aid can easily be removed once the fabric ends are joined.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: December 14, 1999
    Assignee: Scapa Group PLC
    Inventors: David Holden, Philip Coop
  • Patent number: 5939176
    Abstract: An on-machine-seamable multi-axial press fabric for the press section of a paper machine is made from a base fabric layer assembled by spirally winding a fabric strip in a plurality of contiguous turns, each of which abuts against and is attached to those adjacent thereto. The resulting endless base fabric layer is flattened to produce first and second fabric plies joined to one another at folds at their widthwise edges. Crosswise yarns are removed from each turn of the fabric strip at the folds at the widthwise edges to produce seaming loops. The first and second fabric plies are laminated to one another by needling staple fiber batt material therethrough. The press fabric is joined into endless form during installation on a paper machine by directing a pintle through the passage formed by the interdigitation of the seaming loops at the two widthwise edges.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: August 17, 1999
    Assignee: Albany International Corp.
    Inventor: Steven S. Yook
  • Patent number: 5916421
    Abstract: An on-machine-seamable multi-axial press fabric for the press section of a paper machine is made from a base fabric layer assembled by spirally winding a fabric strip in a plurality of contiguous turns, each of which abuts against and is attached to those adjacent thereto. The resulting endless base fabric layer is flattened to produce first and second fabric plies joined to one another at folds at their widthwise edges. Crosswise yarns are removed from each turn of the fabric strip at the folds at the widthwise edges to produce unbound sections of lengthwise yarns. A seaming element, having seaming loops along one of its widthwise edges, is disposed between the first and second fabric plies at each of the folds at the two widthwise edges of the flattened base fabric layer. The seaming loops extend outwardly between the unbound sections of the lengthwise yarns from between the first and second fabric plies.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: June 29, 1999
    Assignee: Albany International Corp.
    Inventor: Steven S. Yook
  • Patent number: 5915422
    Abstract: An improvement (20) for producing an enhanced seam on a machine clothing for a paper or cellulose machine, especially, but not exclusively, when using flat filament yarns (26) in the machine direction of the clothing is shown. The seam has two preformed yarn spirals (20), which are each bound, by the machine direction yarns (26) of the clothing, to one seam edge, thereby each forming a row of seam loops (22) which are meshable with each other and joinable onto each other by means of a pintle wire. At least one spiral (20), preferably both, is, between neighboring seam loops (22) in the row of loops, preformed with special securing portions (24), to which the spiral (20) is attached at the corresponding seam edge. The securing portions (24) hold the seam loops (22) spaced apart and are extended substantially in the longitudinal direction of the spiral (20).
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: June 29, 1999
    Assignee: Albany Nordiskafilt AB
    Inventor: Lars Fagerholm
  • Patent number: 5913339
    Abstract: An open ended papermaker's fabric having first and second layers of machine direction (MD) yarns interwoven with a plurality of cross machine direction (CMD) yarns. Additional CMD yarns are interwoven with both MD layers at each end of the fabric between the last CMD yarn and the seam loops in a balancing weave that establishes vertical and horizontal alignment for the seam loops.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: June 22, 1999
    Assignee: Asten, Inc.
    Inventor: Henry J. Lee
  • Patent number: 5911247
    Abstract: A Jacquard mechanism for creating a shed in a loom has a plurality of hooks operative to be connected, optionally via one or more other bodies, to yarns in a loom. The hooks are movable between a first position and a second position. A griffe is provided, the griffe being movable along a path so as to engage the hooks when the hooks are in the first position. The Jacquard mechanism also has a plurality of solenoids, each solenoid having a plunger operative to directly engage a hook. Movement of the plunger causes an associated hook to move to the second position wherein it will not be engaged by the griffe as it moves along the path.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: June 15, 1999
    Assignee: Scapa Group PLC
    Inventor: Paul Waters
  • Patent number: 5904187
    Abstract: An on-machine-seamable papermaker's fabric includes a first and a second base fabric, each of which is joinable into endless form with a seam. The first and second base fabrics are attached to one another by at least one layer of staple fiber batt entangled therethrough such that they are offset with respect to one another in a lengthwise direction when joined. As a consequence, seaming loops at one widthwise edge of the first base fabric coincide with a non-seam region of the second base fabric, and seaming loops at one widthwise edge of the second base fabric coincide with a non-seam region of the first base fabric. When joined into endless form, the first base fabric is an outer base fabric, and the second base fabric is an inner base fabric.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: May 18, 1999
    Assignee: Albany International Corp.
    Inventor: Francis L. Davenport
  • Patent number: 5878645
    Abstract: A method for forming a ready-to-hang lace curtain and a lace curtain comprising stiffen vertical panel of woven fabric. Each panel being joined to an adjacent panel by an integrally woven vertical zone of open mesh. The open mesh zones formed from a plurality of threads twisted into a single vertical strand. The strand being joined to adjacent vertical panels at evenly spaced intervals by a single loop of thread draw from the vertical strand and extending generally horizontally. The loops being interwoven at spaced locations into the edge of the adjacent vertical panel. Forming an accordion-folding of the plurality of the vertical panels along the mesh zones into aligned and compact stacked assembly and simultaneously die-cutting an opening through the assembled panels while they are in the stacked aligned configuration. The opening configured to receive means for hanging the curtain.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: March 9, 1999
    Inventor: Carl Streit
  • Patent number: 5875822
    Abstract: An on-machine-seamable (OMS.RTM.) papermakers' fabric produced by modified endless weaving includes machine-direction (MD) and cross-machine direction (CD) yarns. The MD yarns are plied/twisted yarns, and weave continuously back-and-forth between the two widthwise edges of the fabric, each time forming a seaming loop at one of the two widthwise edges. A seaming spiral, a monofilament spiral preferably extruded from a polyamide resin, is attached to the seaming loops at each of the two widthwise edges. The two seaming spirals are used to join the fabric into endless form with a pin seam. In this way, an OMS.RTM. papermakers' fabric, having plied/twisted yarns in the machine direction is provided with monofilament joining means which maintain proper orientation and shape for the ready pin seaming of the fabric on a papermachine.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: March 2, 1999
    Assignee: Albany International Corp.
    Inventor: Patrick Fargeout
  • Patent number: 5865219
    Abstract: A double layer papermaking fabric having first and second layers of cross machine direction (CMD) yarns interwoven with a system of machine direction (MD) yarns. The MD repeat pattern is characterized by a portion that weaves exclusively with the first CMD layer, a portion that transitions between the layers, a portion that weaves exclusively with the second CMD layer and a portion that transitions between the layers.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: February 2, 1999
    Assignee: Asten, Inc.
    Inventors: Henry J. Lee, T. Payton Crosby
  • Patent number: 5819811
    Abstract: A flat woven, pin seamed, papermakers' fabric, comprising primary warp monofilament yarns, primary weft monofilament yarns and secondary weft monofilament yarns located between and adjacent to the primary weft yarns. The secondary weft yarns are located beneath, and in contact with, the primary warp. The thickness and width of the secondary weft yarns are chosen at the weaving stage so as to control finished fabric air permeability and increase the paper side surface contact area. The fabrics are of a lower caliper, and provide increased cross direction stiffness at lower yarn counts. Formation of the pintle receiving loop yarns in a low marking woven back pin seam, or of a streamline seam, is also facilitated, without compromising fabric properties, by selection of the appropriate dimensions of the secondary weft yarns.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: October 13, 1998
    Assignee: JWI Ltd.
    Inventors: Samuel M. Baker, Marc P. Despault, James D. Harrison
  • Patent number: 5799708
    Abstract: A papermaker's fabric includes a system of machine-direction (MD) yarns interwoven with a system of cross-machine direction (CD) yarns. The MD yarns are pairs of a first MD yarn and a second MD yarn. The first and second MD yarns are of a substantially rectangular cross section having identical width and thickness. The first and second MD yarns of each pair weave side-by-side as a single yarn with the CD yarns through the fabric. The CD yarns are of circular cross section. The fabric has a permeability to air less than 150 cubic feet per minute per square foot at 0.5 inch H.sub.2 O-pressure.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: September 1, 1998
    Assignee: Albany International Corp.
    Inventor: Michael J. Josef
  • Patent number: 5799709
    Abstract: An open ended papermaker's fabric woven from a longitudinal thread system and a transverse thread system and having a plurality of seam loops at each end of the fabric formed by the threads of the longitudinal thread system. At least one additional transverse thread is interwoven with the longitudinal thread system in at least one seam zone in a repeat pattern that passes over at least two adjacent paper side longitudinal threads and under at least one machine side longitudinal thread.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: September 1, 1998
    Assignee: Asten, Inc.
    Inventor: Gale Shipley
  • Patent number: 5791383
    Abstract: A woven fabric belt device, e.g. an endless screen belt for paper making machines wherein a connection device (7a) is provided on at least one end of the woven fabric belt, which connection device is connectable by use of a releasable connecting device (9) to a further connection device (7b) which is arranged either at the other end of the same woven fabric belt or at an end of another woven fabric belt. In order to provide protection against wear, a number of predetermined longitudinal threads (2) are removed but not separated from the woven fabric (1,2,6) along a portion thereof (4) associated with the end of the woven fabric belt, wherein the removed portions (4) of the longitudinal threads (2) are rewoven into a horizontal protective layer of the woven fabric. The protective layer is positioned to lie at least one of over, under and both over and under the connection device (7a) of the woven fabric belt and thus form a protective layer for this connection device (7a).
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: August 11, 1998
    Assignee: Huyck Austria GmbH
    Inventor: Gerhard Eckhardt
  • Patent number: 5787936
    Abstract: An industrial conveying fabric having a laminated multilayer construction. The laminated fabric includes a first fabric having a tubular configuration that is flattened and a second open flat fabric disposed within the first tubular fabric. The opposed ends of the second fabric project through the first fabric and are joined together to seam the laminated fabric. Preferably, the laminated fabric is used as a base fabric for a papermakers wet press felt and has fibrous batting material needled thereto.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: August 4, 1998
    Assignee: Asten, Inc.
    Inventor: F. Lee Snipes
  • Patent number: 5785818
    Abstract: A multilayer papermaker's press felt fabric comprising in combination a woven first fabric layer, typically a double layer fabric, has a cross machine direction pin seam. A second fabric layer is located on the paper side face of the first fabric layer, and a layer of needled batt is applied to the paper side face of the second layer binding the layers together. A flap comprising a short length of the second fabric layer with attached batt overlays the pin seam area in the first layer. The second layer comprises a plurality of relatively narrow strips, which are located with a lateral edge at a first cant angle of from more than 1.degree. to less than 20.degree. to the machine direction. A third layer, similar to the second layer, can be included on the machine side of the first layer; the strip widths, the cant angles, and the direction of the cant angle relative to the machine direction for each of the two strips need not be the same. The fabric is assembled using a spiral winding technique.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: July 28, 1998
    Assignee: JWI Ltd.
    Inventors: Eugene Z. Fekete, Edwin R. Perry, Robert P. Burke
  • Patent number: 5769131
    Abstract: An on-machine-seamable papermakers' fabric having a smooth surface and a prolonged life includes flat machine-direction yarns which define the upper and lower surfaces thereof. The fabric has two layers of cross-machine direction yarns, each of which is interwoven with the flat machine-direction yarns. Other machine-direction yarns, of round cross section, weave with the cross-machine-direction yarns in the two layers to bind the two layers together. The knuckles of these round machine-direction yarns are within the fabric with respect to the planes defined by the flat machine-direction yarns, and, and a consequence, are less susceptible to degradation by heat and abrasion. The papermakers' fabric is seamed into endless form during installation on a paper machine. At one of the two ends of the fabric, seaming loops are formed by the round machine-direction yarns. At the other of the two ends, seaming loops are formed by the flat machine-direction yarns.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: June 23, 1998
    Assignee: Albany International Corp.
    Inventors: Sharon K. Whitlock, Michael J. Josef
  • Patent number: 5746257
    Abstract: An all synthetic corrugator belt seam for joining corrugator belt sections constructed of a multi-layer fabric wherein each of the ends of the fabric is separated by removing intermediate CMD and MD yarns to form separated upper and lower fabric end portions and securing a seam tape between the separated layers at each end of the belting. The seam tape is sandwiched between the separated layers and completely enclosed therein when the layers and seam tape are secured together so that interruption of the otherwise continuous belting is minimized.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: May 5, 1998
    Assignee: Asten, Inc.
    Inventor: Ted J. Fry
  • Patent number: 5738151
    Abstract: A shed formation device with a frame assembly having at least two harnesses mounted for movement in the frame. Each harness includes a plurality of heddles through which CMD yarns are passed. The existing cross machine direction (CMD) yarns of the fabric pass over an out-feed bar mounted to the frame assembly as they exit the heddles. A replacement CMD yarn supply provides replacement CMD yarns to the heddles for reweaving with the machine direction (MD) yarns to form seam loops and finished fabric ends. The replacement CMD yarns pass over an in-feed bar, mounted to the frame assembly, prior to passing through the heddles. The harnesses are manipulated to form an unweaving shed in the existing CMD yarns and re-weaving shed in the replacement CMD yarns. Retractable expansion forks assist the unweaving and reweaving of the MD yarns. A leasing device captures MD yarns from the unweaving shed and releases them into the reweaving shed to form seam loops and finished ends.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: April 14, 1998
    Assignee: Asten, Inc.
    Inventor: Henry J. Lee
  • Patent number: 5732749
    Abstract: A laminated integrally woven on-machine-seamable papermaker's fabric includes two single-layer woven fabric plies sharing a common machine-direction (MD) yarn. The common MD yarn, which is the weft yarn on the loom during the weaving of the fabric by a modified endless weaving technique, forms seaming loops which join the plies to one another at the ends thereof. The fabric may be needled with a batt of staple fiber material. During the weaving of the press fabric, solvent-removable binder yarns join the two plies, which are accordingly integrally woven. When the weaving is completed, the solvent-removable binder yarns are removed through dissolution with an appropriate solvent, yielding the laminated structure. A batt of staple fiber material may be needled into and through the laminated structure. The papermaker's fabric may be used as a forming, press or dryer fabric, or as a base for a polymer-coated, paper industry process belt, such as a long nip press, sheet-transfer or calender belt.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: March 31, 1998
    Assignee: Albany International Corp.
    Inventor: Patrick Fargeout
  • Patent number: 5720323
    Abstract: A method for mechanically producing a seam half or a seam for making a length of woven fabric endless is characterized by the length of woven fabric being formed of warp threads extending longitudinally to the direction of the length of woven fabric as well as of weft threads extending transversely to the direction, wherein the warp threads are released from the woven material in an end portion or in both end portions of the length of woven fabric and woven as auxiliary weft threads into auxiliary warp threads in accordance with a weaving order predetermined for producing the seam half or the seam. In the end portion or in one of the two end portions, a group of weft threads, which borders on the non-opened length of woven fabric in the direction of the length of woven fabric and which has been exposed by releasing the warp thread ends from the woven material, is used as auxiliary warp threads.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: February 24, 1998
    Inventor: Siegmund Tremer
  • Patent number: 5713398
    Abstract: A papermaker's fabric includes a system of machine-direction (MD) yarns interwoven with a system of cross-machine direction (CD) yarns. The MD yarns are pairs of a first MD yarn and a second MD yarn. The first MD yarn and the second MD yarn in each pair are different from one another. The first MD yarn is of a substantially rectangular cross section having a preselected width and thickness. The second MD yarn may be either of a substantially rectangular cross section or of a circular cross section. If of a substantially rectangular cross section, the second MD yarn is narrower than the first MD yarn. The thickness, or diameter, of the second MD yarn is less than that of the first MD yarn. The first and second MD yarns of each pair weave side-by-side as a single yarn with the CD yarns through the fabric.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: February 3, 1998
    Assignee: Albany International Corp.
    Inventor: Michael J. Josef
  • Patent number: 5713399
    Abstract: A method for manufacturing a papermaker's fabric by spirally winding a woven fabric strip, narrower than the intended width of the fabric, and the papermaker's fabric manufactured in accordance with the method, are disclosed. The fabric strip includes lengthwise and crosswise yarns, and has a lateral fringe along at least one lateral edge thereof, the lateral fringe being unbound ends of the crosswise yarns extending beyond the lateral edge. During the spiral winding of the fringed strip, the lateral fringe of a turn overlies or underlies an adjacent turn of the strip. The lateral edges of adjacent turns abut against one another. The spirally continuous seam so obtained is closed by ultrasonically welding or bonding the overlying or underlying lateral fringe to the fabric strip in an adjacent turn.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: February 3, 1998
    Assignee: Albany International Corp.
    Inventors: A. Leon Collette, James G. Donovan, Henry M. Cooke, Bodil Jonasson
  • Patent number: 5657797
    Abstract: Cross machine stuffer yarns are used in the construction of a base fabric for a papermakers wet felt. The stuffer yarns in combination with a multiple pass heat setting process stabilize the machine direction yarns of the base fabric to provide resistance to nip rejection. Preferably a fibrous batt is needled to the base fabric to finish the wet press felt.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: August 19, 1997
    Assignee: Asten, Inc.
    Inventors: Glenn C. Townley, Francis J. Cunnane
  • Patent number: 5601120
    Abstract: A papermakers fabric has concentric double pin seam loops on each end for enabling it to be seamed to form an endless form for use on a papermaking machine. A seaming method for making double seaming loops is also provided.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: February 11, 1997
    Assignee: Asten, Inc.
    Inventors: Stephanie Kuckart, Gisela Fickers, Ernst Schroder
  • Patent number: 5601877
    Abstract: A method for closing a seam in a paper processing belt having a coating of polymeric resin material requires the use of a viscous paste obtained by mixing a polymeric resin material with a blowing agent. Following installation of the fabric, or belt, on a paper machine by closing its pin seam with a pintle, the seam region on the non-paper side of the fabric or belt is impregnated with the viscous paste. The seam region is then heated to a temperature to activate the blowing agent and to create a foam from the paste. The foam fills voids in the seam region, and may pass out through the slit in the coating over the seam. Raising the temperature further cures the foam and may glue the slit closed. The belt so seamed may be used as a transfer belt or long nip press (LNP) belt, or in other paper processing applications.
    Type: Grant
    Filed: June 9, 1994
    Date of Patent: February 11, 1997
    Assignee: Albany International Corp.
    Inventors: Lawrence G. Miller, Robin Lotti-Fassnacht, Henry M. Cooke
  • Patent number: 5531251
    Abstract: A method of manufacturing a double-layered fabric designed for use in a papermaking, cellulose or board manufacturing machine by a round-weaving technique involves the weaving of an endless weft thread with a plurality of warp threads. Seam loops are formed at the two ends of the fabric by weaving the endless weft thread around a seam thread during the weaving process. In this process, the plurality of warp threads are on one side of the seam thread. The fabric has a first side for supporting fibrous web material to be dewatered and an underside, and the endless weft thread is alternatively disposed on the first side and on the underside of the fabric with each pass around the seam thread. The method includes the improvement wherein the endless weft thread is woven with at least one extra warp thread adjacent to the seam thread when the endless weft thread is on the first side of the double-layered fabric.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: July 2, 1996
    Assignee: Albany Nordiskafilt AB
    Inventor: Bjorn Rydin
  • Patent number: 5514456
    Abstract: A spiral link belt has a plurality of plastic helices connected to one another which interlock in the manner of a slide fastener with neighboring helices. Overlapping widening arcs form a channel and pintle wires run through the channels and thereby connect the helices. Flat wires are inserted in the helices to reduce the air permeability of the spiral link belt. The flat wires are tilted relative to the plane of the spiral link belt. The flat wire running inside a helix can be wider than the smallest distance between the two helices connected to this helix. During production, the spiral link belt is thermoset only after the insertion of the flat wires.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: May 7, 1996
    Assignee: SITEG Siebtechnik GmbH
    Inventor: Johannes Lefferts
  • Patent number: 5514438
    Abstract: A papermakers fabric comprises a felt made up of a base cloth and a batt of fibres needled to the base cloth. The papermakers fabric is woven from machine direction yarns and cross machine direction yarns. The machine direction yarns form a series of loops at each of the fabric ends, the two sets of loops being interdigitable and capable of union by a pintle wire. The machine direction yarns comprise a core of cabled monofilaments surrounded by a sheath of multifilaments.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: May 7, 1996
    Assignee: Scapa Group PLC
    Inventor: Robert L. Crook, Jr.
  • Patent number: 5503196
    Abstract: A papermaker's fabric having a smooth surface and a prolonged life includes flat machine-direction yarns which define the upper and lower surfaces thereof. The fabric has two layers of cross-machine direction yarns, each of which is interwoven with the flat machine-direction yarns. Other machine-direction yarns, of round cross section, weave with the cross-machine-direction yarns in the two layers to bind the two layers together. The knuckles of these round machine-direction yarns are within the fabric with respect to the planes defined by the flat machine-direction yarns, and, as a consequence, are less susceptible to degradation by heat and abrasion. The round machine-direction yarns may be used to seam the fabric. A longer fabric life follows from the protection of the round machine-direction yarns by the flat. The papermaker's fabric is particularly useful as a dryer fabric on the dryer section of a papermachine.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: April 2, 1996
    Assignee: Albany International Corp.
    Inventors: Michael J. Josef, Eric R. Romanski, Ross G. Burbank
  • Patent number: 5503195
    Abstract: A composite pintle for joining the ends of a pin-seamable papermaker's fabric together with a pin seam includes a monofilament yarn having at least one monofilament strand, and a filler yarn, so-called because it fills the void volume surrounding the monofilament yarn in the passage formed by the interdigitated seaming loops and through which the composite pintle is directed to join the fabric into endless form. The filler yarn, including sample fibers, may be a texturized, spun, cabled or plied yarn. The monofilament and filler yarns are drawn through the seaming passage by a wire leader, which may be attached to them by a connecting sleeve.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: April 2, 1996
    Assignee: Albany International Corp
    Inventor: Roy C. Edens, Jr.
  • Patent number: 5488976
    Abstract: A seam construction for joining the ends of an industrial fabric. The fabric having machine direction and cross machine direction yarns interwoven in an uneven shed pattern that defines a single layer fabric body. The machine direction yarns at each end define a series of loops that secure a respective coil seam member to each end of the fabric. The machine direction yarns of the fabric are woven in a repeated pattern having "n" yarns, wherein "n" is an uneven number and "(n-1).div.2" machine direction yarns are woven back into the body of the fabric in a shed pattern defined by another machine direction yarn and the "n.sup.th " yarn is woven back into the body of the fabric in its identical shed pattern.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: February 6, 1996
    Assignee: Asten, Inc.
    Inventors: Michelle M. Lorenz, Cynthia A. Houfek
  • Patent number: 5476123
    Abstract: A woven fabric, such as a base fabric for a press felt, which is designed for a papermaking machine or the like has along each one of two end edges a plurality of seam loops to be included in a loop seam to form an endless woven fabric. The fabric is characterized in that there is provided, at least at one of the end edges, at least one string of material, preferably in the form of one or more extra yarn threads, extended substantially parallel to the above-mentioned one end edge adjacent the regular thread system of the fabric. The extra yarn thread or threads are woven to only such portions of the seam loops as are facing a first side of the fabric, preferably the paper side thereof. In this manner, there is formed in the seam zone a type of extension of the regular thread system of the fabric, whereby the loop seam is conformed to the rest of the fabric to avoid markings in a paper web at the loop seam.
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: December 19, 1995
    Assignee: Nordiskafilt AB
    Inventor: Bjorn Rydin
  • Patent number: 5458161
    Abstract: A pin seam for use in woven papermaking fabrics, wherein more than 50% of the warp strands from each of the fabric ends are used to form the pintle retaining loops. The loops formed at one of the opposing fabric ends have an "S" orientation, while the loops formed at the second opposing end have a "Z" orientation, thereby allowing the two sets of pintle retaining loops to interdigitate easily. The resulting seam is strong, easily installed on the papermaking machine and has a reduced propensity to mark the paper web. The invention is particularly applicable to fabrics woven using 3-shed weave patterns or integral multiples thereof.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: October 17, 1995
    Assignee: JWI Ltd.
    Inventor: Alfred Scarfe
  • Patent number: 5421373
    Abstract: A support for the reed of a seam-weaving machine for joining the ends of a flat-woven, paper-making fabric by means of a woven seam includes a reed having reed dents for the shifting of the auxiliary weft threads against the fell. The reed dents are pivotally mounted and press successively against the auxiliary weft thread to be shifted starting from the fabric end from which the auxiliary weft threads protrude as a warp fringe. In order that the reed dents are gradually shifted by the movement of the sley, the reed dents are staggerable in their position such that the points at which the reed dents touch the auxiliary weft thread to be shifted lie roughly on a straight or slightly curved line whose distance from the fell increases, starting from the point of emergence of the auxiliary weft thread from the fabric end.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: June 6, 1995
    Assignee: Novatech GmbH Siebe und Technologie fur Papier
    Inventors: Hans-Eugen Hacker, Edgar Hofstetter
  • Patent number: 5411062
    Abstract: A flat woven pin-seamed papermakers fabric wherein machine direction yarns define a series of seaming loops on the opposing fabric ends. The fabric comprises a system of flat monofilament machine direction warp yarns (hereinafter MD yarns) which are woven in a selected weave construction. In a preferred embodiment, the system of MD yarns comprises upper and lower yarns which are vertically stacked. Selected end segments of the upper and lower MD yarns are removed and yarn segments made of a more durable material are rewoven into the fabric end in the space vacated by the trimmed upper and lower MD yarn end segments. Non-loop forming upper MD yarns are preferably backwoven into the space vacated by trimming respective lower MD yarns. Preferably, at least the upper MD yarns are woven contiguous with each other to lock in the machine direction alignment of the stacking pairs of MD yarns and the orthogonal orientation of the end loops.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: May 2, 1995
    Assignee: Asten Group, Inc.
    Inventor: Henry J. Lee
  • Patent number: 5411063
    Abstract: A seam-weaving machine for making a fabric endless by a woven seam is provided with a fringe catcher adjacent the edge zone of the woven seam. The fringe catcher, after a shed change, is moved forward beyond the fell by a drive device and upon return of the fringe catcher, draws an upwardly protruding fringe thread away to the rear above the already formed part of the woven seam.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: May 2, 1995
    Assignee: Novatech GmbH
    Inventors: Hans-Eugen Hacker, Edgar Hofstetter, Eckhard Kaminski
  • Patent number: 5391419
    Abstract: A press fabric for use on papermaking and similar machines is of the open-ended variety, and has loops at each end enabling it to be closed into endless form during installation on the machine by means of a pin seam. The machine-direction (MD) yarns, from which the loops are formed during the flat or endless weaving of the fabric, are composite yarns having a core yarn with a sleeve-like coating. The coating, either permanent, semi-permanent, or soluble, gives the composite yarn a monofilament-like structure enabling good loop formation and stability. The use of multifilament yarn as the core yarn provides a fabric having improved elasticity in the machine direction, and a greater degree of resiliency, following the removal of a soluble coating material, than can be obtained using monofilament yarn.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: February 21, 1995
    Assignee: Albany International Corp.
    Inventor: Francis L. Davenport
  • Patent number: 5390708
    Abstract: A yarn positioning apparatus for use in an automated seaming machine for forming a woven join between opposite ends of a length of woven fabric, of the type in which an auxiliary strip of threads are supported in parallel relation to the cross machine direction threads in the woven fabric. The opposite ends of the fabric are supported on opposite sides of the auxiliary threads and each end of the woven fabric includes a fringe of machine direction (MD) threads. The MD threads are successively separated from the fringe and interwoven with the auxiliary thread to form the join. The yarn positioning apparatus is comprised of a yarn gripper for gripping a previously woven yarn from a fabric fringe in a first orientation and repositioning it to a second orientation. The yarn is retained in its second orientation as it is translated for further processing.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: February 21, 1995
    Assignee: Asten Group, Inc.
    Inventors: Heinz Kuster, Stephan Kuster
  • Patent number: 5386854
    Abstract: A seam-weaving machine for the production of a continuous plastics woven fabric by a woven seam with a Jacquard machine (1) for the formation of the weaving shed. The Jacquard machine (1) is arranged underneath the weaving shed (11) and the harness cords (8) are drawn back by tension springs (15) secured above the weaving shed (11). The Jacquard machine (1) is so arranged that the harness cords (8) emerge downwardly from the Jacquard machine and are deflected upwardly through the weaving shed (11) to the tension springs (15).
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: February 7, 1995
    Assignee: Novatech GmbH Siebe und Technologie Fur Papier
    Inventor: Hans E. Hacker
  • Patent number: RE35966
    Abstract: A flat woven pin-seamed papermakers fabric wherein machine direction yarns define a series of seaming loops on the opposing fabric ends. The fabric comprises a system of flat monofilament machine direction warp yarns (hereinafter MD yarns) which are woven in a selected weave construction. In a preferred embodiment, the system of MD yarns comprises upper and lower yarns which are vertically stacked. Selected end segments of the upper and lower MD yarns are removed and yarn segments made of a more durable material are rewoven into the fabric end in the space vacated by the trimmed upper and lower MD yarn end segments. Non-loop forming upper MD yarns are preferably backwoven into the space vacated by trimming respective lower MD yarns. Preferably, at least the upper MD yarns are woven contiguous with each other to lock in the machine direction alignment of the stacking pairs of MD yarns and the orthogonal orientation of the end loops.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: November 24, 1998
    Assignee: Asten, Inc.
    Inventor: Henry J. Lee