False Twist Device Patents (Class 57/332)
  • Patent number: 8261526
    Abstract: The texturing and interlacing machine for processing synthetic yarns comprises: at least one supporting and unwinding member for at least one bobbin (B1) of untreated yarn to be textured; at least one supporting and unwinding member (31) for a bobbin (B3) of elastomer; a feed path, for at least one yarn (F1) to be textured; along the feed path for the yarn to be textured, in sequence along the direction of feed of the yarn to be textured: a stretching roller (5), a first oven (7), a cooling area (9), a yarn twisting unit (11), a master roller (13), a second oven (15), a stabilizing roller (21), an interlacing device (23) and an overfeed roller (25).
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: September 11, 2012
    Assignee: SSM Giudici S.R.L.
    Inventors: Nerino Grassi, Ezio Santino Fanti
  • Publication number: 20110308051
    Abstract: The present invention provides a method for producing thread using nonwoven, which discloses that nonwoven having different materials is slit first to get a plurality of nonwoven threads and then the nonwoven threads are used for performing a twisting process to get a plurality of nonwoven yarns. In the twisting process, each of the nonwoven threads has different materials, so that the nonwoven yarns have good mechanical characteristic and can be added for producing textiles with various functionalities.
    Type: Application
    Filed: June 24, 2011
    Publication date: December 22, 2011
    Inventors: JING-JYR LIN, Jen-Sheng Tsai
  • Publication number: 20110165396
    Abstract: A fabric can comprise yarns comprising less than about 30 denier total and less than about 10 denier per filament; a density of greater than about 177 yarns per m2; and a thickness of less than about 3.2 mil. The fabric can further comprises a weight of less than about 60 g/m2. The fabric can have performance characteristics equivalent to or greater than those in conventional implantable fabrics. A method of making such a fabric can include twisting together filaments into a multifilament yarn; passing adjacent yarns into a loom in parallel so as to allow the yarns to be woven together more closely; maintaining a consistent tension on the yarns during placement of the yarns on a loom beam and during weaving; and or subjecting the fabric to increased heat and pressure so as to compress the yarns more tightly.
    Type: Application
    Filed: December 20, 2010
    Publication date: July 7, 2011
    Inventors: Stephanie Booz Norris, Martin Monestere, JR., Mark Wesley Jessup
  • Patent number: 7850741
    Abstract: The present invention provides a cleansing polyester fabric, which comprises (i) a polyester multifilament consisting of ultra yarns (monofilament) of 0.001 to 0.1 deniers or its false twist yarn as warp and (ii) a false twisted mixing yarn consisting of said polyester multifilament and a high shrinkage polyester multifilament with 10-50% of shrinkage rate in boiling water as a weft, and said fabric satisfies the following properties; sum of warp density and weft density: 220-320 yarns/inch, thickness of the fabric: less than 0.3 mm, and weight of the fabric: 70-180 g/m2. The cleansing fabric of the present invention is useful as a makeup cleansing fabric or as wiping fabric for fine products and optical devices since it exhibits excellent cleansing performance, is soft to the touch and does not damage the surface of products to be cleaned.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: December 14, 2010
    Assignee: Kolon Industries, Inc.
    Inventors: Yang-Soo Park, Heung-Ryul Oh, Dong-Eun Lee
  • Patent number: 7841161
    Abstract: The present invention relates to a machine, a system, and textiles resulting from an industrially produced yarn, created through the incorporation of a linear false twisting device and two lappets positioned to affect a yarn during drafting. The invention results in a yarn having a low twist multiplier. The textiles products created from the produced yarn exhibit a soft feel without requiring the use of chemical treatments.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: November 30, 2010
    Assignees: The Hong Kong Polytechnic University, Central Textiles (Hong Kong) Ltd.
    Inventors: Chi Ping Cheng, Allan Ki Luk Chick, Xiao-ming Tao
  • Patent number: 7406818
    Abstract: The present invention is an apparatus and method of making yarn for carpet that exhibits a high degree of color pop. More specifically, in one aspect, the present invention comprises an apparatus and method that comprises supplying a plurality of yarns, false-twist the plurality of yarns, and passing the consolidated yarn through a downstream entangling assembly to tack at least a portion of the consolidated yarn. Another aspect of the present invention passes at least one of the plurality of yarns through one of a plurality of second entangling assemblies positioned upstream of the false-twist apparatus.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: August 5, 2008
    Assignee: Columbia Insurance Company
    Inventor: Kenneth H. Keith
  • Patent number: 7096655
    Abstract: In a process for manufacturing a singles ring yarn, firstly a first twist is supplied to a strand of traveling drafted fibers at a false twist device for producing a preliminary singles yarn. The false twist device rotates at a first speed for twisting the fibers. Immediately after the first twisting step, a joint twist of a second twist in the same direction as the first twist and a third twist in a reversed direction is supplied to the preliminary yarn for producing a final singles ring yarn. The second twist is produced by a rotatable take-up package onto which the final singles yarn is drawn. The reversed twist results in correspondence to the first twist, and the take-up package rotates at a second speed. The final singles yarn is then drawn onto the take-up package. Furthermore, a ratio of the first speed to the second speed is controlled for controlling the amount of a residual torque in the final singles ring yarn.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: August 29, 2006
    Assignee: The Hong Kong Polytechnic University
    Inventors: Xiaoming Tao, Bingang Xu, Sing-Kee Wong
  • Patent number: 6860095
    Abstract: An internal torque balancing method of short fiber yarns related to the art of textile and the manufacturing apparatus thereof. The present invention proposes a completely new mechanical processing method of single torque-free yarns, and applies it into the process of ring spinning. Said method accomplishes a machine and a possibility of processing single torque-free yarns within one processing step by simple improvement on the existing ring spinning machine. Said technique is applicable to the production of all types of short fiber materials, and can overcome the maximum bundle yarn count of Ne limit of the torque-free yarns processed by the existing physical balancing technique. Meanwhile, said technique can process the yarns with low twist, which is unable to be processed normally by the conventional ring spinning machine. The torque-free singles ring spinning machine has good mechanical behavior, good handle, and evenness without residual torque.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: March 1, 2005
    Assignee: The Hong Kong Polytechnic University
    Inventors: Xiaoming Tao, Bingang Xu
  • Patent number: 6745097
    Abstract: A management method for fiber-processing and a management apparatus thereof, which can detect the occurrences of the selected monitoring events by monitoring the occurrences, can investigate the causes of the occurrences of the events by treating the events so that the factors of the occurrences of the problems can be easily determined whether they are attributable to the problem of the fiber-processing machine itself or the problem of supplied yarn, and can promptly accurately present countermeasures against the problems.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: June 1, 2004
    Assignee: Teijin Limited
    Inventors: Hiroaki Kusuzono, Mitsumasa Sasaki, Bunji Hamasu, Yoshiharu Imamura
  • Patent number: 6715276
    Abstract: A false twist yam including synthetic fiber yam having elongation, crimp rigidity, crimp appearance stretch ratio, dry heat shrinkage stress maximum value, deformation degree of single filament and entanglement number in specific ranges respectively. The yam has good drape properties, soft feeling, bulkiness, and flexibility as well as puff properties, mild luster, and pliable dry feeling. From the yam, woven or knit fabrics having novel texture that cannot be achieved in woven or knit fabrics produced from conventional drawn or false twist yams. The false twist yam is produced in a drawing and false twisting process.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: April 6, 2004
    Assignee: Toray Industries, Inc.
    Inventors: Hiroshi Matsuoka, Sadao Matsuki, Tatsuaki Matsuda, Kouichi Satou, Genshin Nakazawa
  • Patent number: 6705071
    Abstract: According to the false-twist texturing method of the yarn including poly lactic acid fiber, the false-twisting device 8 is made to be a nip typed false-twisting device and the heating temperature by the first heater 5 is made to be lower than or equal to 130° C. The false-twist texturing method of the present invention is capable of eliminating the yarn breakage of the poly lactic acid fiber which is weak against the friction and the heat, due to the twisting by the false-twisting device and the heating by the first heater.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: March 16, 2004
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Shigenori Kataoka
  • Patent number: 6609277
    Abstract: There is put forward a method for texturing thermoplastic yarns with which the thread before the provision of texture is brought to the necessary texturing temperature (T2) and during the actual texturing provision is cooled to a setting temperature (T23). The heating to the texturing temperature (T2) is effected in two steps. The actual texturing line (24) is provided with an active cooling, by which means the yarn is actively cooled to a setting temperature.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: August 26, 2003
    Assignee: Retech Aktiengesellschaft
    Inventors: Markus Jaggi, Heinz Von Arx
  • Publication number: 20030041586
    Abstract: A false twist yarn comprising synthetic fiber yarn having elongation, crimp rigidity, crimp appearance stretch ratio, dry heat shrinkage stress maximum value, deformation degree of single filament and entanglement number in specific ranges respectively. The yarn has good drape properties, soft feeling, bulkiness, and flexibility as well as puff properties, mild luster, and pliable dry feeling. From the yarn, woven or knit fabrics having novel texture that cannot be achieved in woven or knit fabrics produced from conventional drawn or false twist yarns.
    Type: Application
    Filed: November 5, 2001
    Publication date: March 6, 2003
    Inventors: Hiroshi Matsuoka, Sadao Matsuki, Tatsuaki Matsuda, Kouichi Satou, Genshin Nakazawa
  • Patent number: 6477828
    Abstract: A method of false twist texturing a synthetic yarn as well the thus-produced crimped yarn. In the method, the yarn is irregularly drawn in a draw zone on a draw pin and subsequently textured in a false twist zone. As a result of the irregular drawing, an open and a closed combination of filaments is alternately produced in the crimped yarn, thus creating a crimped yarn, which exhibits a thin-thick effect.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: November 12, 2002
    Assignee: Barmag AG
    Inventor: Wolfgang Nölle
  • Patent number: 6430911
    Abstract: A yarn texturing machine for texturing a plurality of thermoplastic yarns, each in a processing station. The yarns are guided and advanced in each processing station by a plurality of feed systems. One of the feed systems is mounted on a movable slide, and the slide is guided by means of a slide element along a guide rail and moved by means of a linear drive between a servicing position and an operating position. For a transfer of force, the slide element connects to a drive via a cable line extending along the guide rail.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: August 13, 2002
    Assignee: Barmag, AG
    Inventors: Klemens Jaschke, Andreas Schulz, Dietrich Berges
  • Publication number: 20020104305
    Abstract: A method of processing textile material is disclosed in which the material (13) is passed along a predetermined path through a liquid jet device (50, 70, 80, 90, 100, 120, 130) applying a force to the material (13) transversely to the axis of the material (13). High pressure water is used to form one or more belts (11, 12) for applying twist to a yarn (13), sliver or roving (273), or as a jet to intermingle one or more yarns (13). The water may serve to cool the yarn (13) after beating in a false twist process.
    Type: Application
    Filed: January 7, 2002
    Publication date: August 8, 2002
    Inventors: Peter William Foster, Duncan Cameron Ferrier, Ujithe Sujeewa Wickramasinghe Gunasekera
  • Patent number: 6408607
    Abstract: A method for false twist texturing a synthetic yarn, as well as the thus-produced crimped yarn, wherein a false twist is produced on the yarn at a speed of a false twist unit, which exceeds 2.2 times of the yarn speed and is above a saturation limit for absorbing a false twist in the yarn. The overtwisted yarn is set in the false twist zone at a temperature higher than 200° C. In proportion with the advancing speed, the withdrawal speed does not exceed 1.4 times the advancing speed, and is below 1,000 m/min. With that, a false twist textured crimped yarn is produced, which has large and small cross sections with curls and bows, which alternate with one another and have opposite directions of twist.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: June 25, 2002
    Assignee: Barmag AG
    Inventor: Wolfgang Nölle
  • Patent number: 6374588
    Abstract: It is an object of the present invention to provide a hairiness controlling device that can start, simultaneously with the start of spun yarn running, stabilizing a spun yarn run through disks. According to the present invention, a rotation speed of each disk 6 is varied depending on a running speed of a spun yarn Y run as a drive drum D rotates, thereby setting the tension of the spun yarn Y at an appropriate value when the spun yarn starts to run.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: April 23, 2002
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Fumiaki Nakaji
  • Patent number: 6345491
    Abstract: An apparatus for inserting twist into a moving strand, including a first body including an orifice extending therethrough for permitting passage of a moving yarn. An air channel extends therethrough and communicates with the orifice. The air channel communicates with the orifice at a tangentially-offset angle to the path of the yarn through the orifice to create a cyclonic air circulation pattern in the orifice to insert a predetermined direction of twist into the yarn as the yarn passes through the orifice. The first body is adapted for being inverted relative to, and placed in overlying registration with, a second like body whereby the air channel of the first body inserts one predetermined direction of twist into the yarn and the air channel of the second body inserts another predetermined direction of twist into the yarn.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: February 12, 2002
    Assignee: Belmont Textile Machinery Co., Inc.
    Inventors: Kevin E. Moran, Kurt Willy Niederer, Robert Edward Taylor, Ralph Samuel Jenkins, Jeffrey Todd Rhyne
  • Patent number: 6209301
    Abstract: A texturing machine is described which consists of a plurality of processing-points for thermoplastic threads. A feed bobbin, a first delivery mechanism, an elongated first heating device, an elongated cooling device, a false-twist unit, a second delivery mechanism and also a winding-up device are arranged at each processing-point. In this connection several feed bobbins are arranged above one another in a creel frame, and several winding-up devices are arranged above one another in a winding frame. The first delivery mechanism, the heater and the cooling device are located above the frames. In order to guarantee a careful course of the thread as well as operability, the first delivery mechanism is arranged together with a drive in an operational position directly upstream of the inlet of the first heating device.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: April 3, 2001
    Assignee: Barmag AG
    Inventors: Uwe Baader, Thomas Wortmann
  • Patent number: 6199361
    Abstract: By appropriately controlling a yarn tension of an upstream side from a false twist device, variations in yarn quality among packages can be eliminated. A false twist texturing unit 7 which imparts a yarn Y with a false twist, a first feed roller 4 arranged in the upstream side from the false twist texturing unit 7, and an upstream side yarn tension control device 30 which automatically adjusts the rotation speed of a first feed roller 4 such that the upstream side yarn tension T1 is maintained within a fixed range are provided. A downstream side yarn tension control device 35 which automatically adjusts the false twist device 7 such that downstream side yarn tension T2 is maintained within a fixed range is also provided. Additionally, a determining unit 45 which determines whether or not the yarn quality is satisfactory based on the detection result of an upstream side yarn tension detecting unit 24 and a downstream side yarn tension detection unit 35 is also provided.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: March 13, 2001
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Hiroshi Yakushi, Shinichiro Morimoto
  • Patent number: 6089009
    Abstract: A process of producing an assembled yarn, including the steps of providing two or more yarns moving downstream from a supply to a take-up, inserting alternating-direction zones of twist into at least one of the yarns, the at least one yarn having an area of zero twist between said alternating direction zones of twist, combining the at least two yarns to form a single, integrated yarn strand, and intermittently exposing the yarn strand to an air blast to create a zone of intermingled yarns at spaced-apart points along the length of the yarn strand to prevent torsional movement of one yarn relative to the other yarn. According to one preferred embodiment of the invention, the step of exposing the yarn strand to an air blast includes the step of intermingling the yarns at the areas of zero twist.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: July 18, 2000
    Assignee: Belmont Textile Machinery Co., Inc.
    Inventors: Edward Lowe Hand, deceased, Kurt Willy Niederer, Robert Edward Taylor, Ralph Samuel Jenkins, Jeffrey Todd Rhyne
  • Patent number: 6041585
    Abstract: To prevent yarn from being cut when an operating spinning machine stops, thereby preventing subsequent re-activation from being affected. In a spinning machine for manufacturing yarn by passing a fiber bundle that exits a draft apparatus 1 through a spinning nozzle 2 injecting a swirling air current and then through a twisting apparatus 3 that twists the fiber bundle in a direction reverse to that of the swirling air current, each spinning unit is driven independently, and the draft apparatus 1 can be decelerated or accelerated with the speed ratio of each pair of rollers being maintained. When the spinning is stopped or activated, the draft apparatus 1 and the twisting apparatus 3 simultaneously decelerate or accelerate so as to be simultaneously stopped or activated, and in response to this operation, air injection from the spinning nozzle 2 stops or starts.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: March 28, 2000
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Tsutomu Mekata, Akio Matsushima
  • Patent number: 5899056
    Abstract: In a spinning process for producing a yarn, fiber material in the form of at least one sliver is opened to a fibrous veil consisting of single fibers, and is deposited on an air-permeable suctioned collecting surface. The speed of the fibrous veil transported on the collecting surface is preferably not higher than the speed of the drawn off yarn. Before reaching the yarn formation line located on the collecting surface, the fibrous veil is divided into a plurality of fiber accumulations and thereby pre-twisted to strands. The position and travelling direction of the strands on the collecting surface is defined by guiding edges of suction slits. The individual strands are guided off transversely to the yarn formation line, whereby the extent of the pre-twist and the extent of the transport force is determined by the angle of the strands to the yarn formation line. Pre-twisted strands are wound around each other along the yarn formation line so that a type of ply-twisted yarn arises.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: May 4, 1999
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Patent number: 5699661
    Abstract: This invention is concerned with a spinning apparatus with an arrangement of a spinning nozzle which generates a rotating air current positioned close to the front roller and a pair of false twist units having hollow cylindrical rollers formed from elastic material which are positioned down stream from that spinning nozzle. As contact surfaces are formed that nip the fiber bundle by contacting the hollow cylindrical rollers having elastic properties, the fiber bundle can be reliably nipped in conjunction with the elasticity and the centrifugal force of the hollow cylindrical rollers. Even when driving the false twist apparatus at high speed a sufficient false twist can be imparted, a strong delivery power and unwinding power can be applied to the fiber bundle, and not only can high speed spinning be achieved, but also a strong, uniform spun yarn with little hairiness can be manufactured.
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: December 23, 1997
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Hiroshige Maruki
  • Patent number: 5664409
    Abstract: A method is described for controlling the tension of an advancing yarn, which is crimped in a friction false twist unit of a false twist crimping machine. In accordance with the method, the tension of the advancing yarn is measured downstream of the friction false twist unit and the yarn tension is converted via a time filter and by comparison with a predetermined desired value into an adjustment signal for correcting the friction false twist unit, the control range being determined by defined limit values of the adjustment signal. The adjustment signal is a current value and is corrected adaptively via a PI controller, the control behavior of which takes into account the quotient from the change of the yarn tension and the change of the current value of the adjustment signal.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: September 9, 1997
    Assignee: Barmag AG
    Inventor: Hellmut Lorenz
  • Patent number: 5499911
    Abstract: There is disclosed an apparatus for spinning of polyurethane elastic filaments, which includes an improved means for application of a finishing agent and/or an improved means for false twisting. Each of the improved means has a groove through which a polyurethane elastic filament is allowed to pass, at which time a finishing agent is applied to the passing filament before its contact with any solid face of the apparatus.
    Type: Grant
    Filed: April 7, 1994
    Date of Patent: March 19, 1996
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Kiyoshi Nakata, Seishu Hayashi
  • Patent number: 5369945
    Abstract: A method and apparatus for controlling a false twist texturing machine, which extends the previously known process for controlling operation during the normal operation of the machine, to exceptional operating conditions, such as during yarn thread-up and/or restarting after a temporary stoppage of operation by reason of a power failure. In accordance with the invention, the known method which includes control of the frictional force imparted to the yarn as a function of the yarn tension, is modified in such a manner that during periods other than normal operation, the control of the frictional force as a function of the yarn tension is terminated, and a predetermined frictional force is imparted to the yarn.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: December 6, 1994
    Assignee: Barmag AG
    Inventors: Bernd Wessolowski, Bernd Neumann, Hellmut Lorenz
  • Patent number: 5119623
    Abstract: In the case of a false-twisting nozzle for pneumatic false-twist spinning having a nozzle body formed of one or several segments, it is provided that, for the reduction of the cross-section of the outlet opening of the blow duct, at least one part of its interior wall is provided with a coating.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: June 9, 1992
    Assignee: Fritz and Hans Stahlecker
    Inventors: Gerhard Fetzer, Hans Braxmeier
  • Patent number: 5094068
    Abstract: A yarn false twister in which an endless belt an a first rotary member are disposed across each other to constitute a nip point at which a yarn is twisted, and a second rotary member, on which the yarn is wound after the nipping thereof so that the upstream and downstream portions of the wound yarn cross in contact with each other, is provided coaxially with the first rotary member so that the second rotary member can be rotated independently of the first rotary member.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: March 10, 1992
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Osamu Hirao
  • Patent number: 4927445
    Abstract: A process for producing coated, single twist glass yarns which comprises drawing a plurality of fibers formed from fibers of molten glass, applying to the fibers a sizing comprising a thermoplastic, thermosetting or photosetting composition, gathering the coated fibers into a yarn, imparting a continuous rotative twisting movement to the coated yarn and curing the coated yarn so as to polymerize and/or crosslink the sizing coating.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: May 22, 1990
    Assignee: Vetrotex Saint-Gobain
    Inventors: Barbara Soszka, Robert Federowsky, Jacques Mahler
  • Patent number: 4607483
    Abstract: This invention relates to a conveyor means for simultaneously advancing and twisting a plurality of strands into a rope and the process for utilizing these means. The conveyor includes an elongated trough with two walls which are joined to define the linear path. The first wall includes the plurality of aligned rollers having access of rotating with a predetermined angular relationship relative to horizontal and vertical planes as well as a power means for driving the rollers in unison and means for feeding the strands into the trough and in frictional contact with the rollers.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: August 26, 1986
    Assignee: Warner-Lambert Company
    Inventors: Albert E. Siecke, Edward Janos
  • Patent number: 4590755
    Abstract: A tube for use in apparatus for twisting wires together such as that described in U.S. Pat. No. 4,429,520. The tube has an outer layer of one material and a thinner inner layer of another material which is bonded to the outer layer. There are at least two feedpaths for the wires and the inner layer surrounds each of two passages defining these feedpaths. The inner layer is abrasion resistant and is less deformable and more rigid than the outer layer while the flexibility of the tube enables it to be rotationally flexed about a longitudinal axis to torsionally twist it alternately in opposite directions.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: May 27, 1986
    Assignee: Northern Telecom Limited
    Inventor: John N. Garner
  • Patent number: 4425691
    Abstract: A method of forming a fabric from yarns includes wrapping each yarn about a cylindrical pin in the feed zone of a fabric-forming machine and varying the angle of intersection of the pin with the yarn path to permit alternating real twist to pass the pin and become locked in the fabric being formed.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: January 17, 1984
    Inventors: Stanley Backer, Michael A. Zimmerman
  • Patent number: 4414802
    Abstract: Wire stranding apparatus having a single tube defining a single axial passage providing at least two side-by-side feedpaths for wire, the passage being shaped to prevent wires from moving across from one feedpath to another. The tube is rotationally flexible to torsionally twist it in alternating directions by use of a twisting means at its downstream end while the upstream end is held against rotation. Change in twist direction occurs after a predetermined number of rotations of the twisting means. To accommodate axial contraction and extension during twisting, the tubular means has an axially acting resilient means which maintains axial tension in the tubular means.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: November 15, 1983
    Assignee: Northern Telecom Limited
    Inventors: John N. Garner, Jean M. Roberge, Douglas G. Baxter
  • Patent number: 4325214
    Abstract: Wire stranding apparatus for giving a periodic reverse twisting operation, in which a rotationally flexible elongate member, preferably a rod, carries wire guiding elements extending radially outwardly from it. Each element has guide holes for wires as they are passed along the rod. Stranding is done by holding an upstream end of the rod stationary and while the wires are moved along guide paths, the downstream end of the rod is rotated for a predetermined number of revolutions about its axis alternately in one direction and then the other. Wires are thus stranded in alternating directions.
    Type: Grant
    Filed: November 13, 1980
    Date of Patent: April 20, 1982
    Assignee: Northern Telecom Limited
    Inventor: Bretislav P. Zuber
  • Patent number: 4322944
    Abstract: Method of and apparatus for break spinning yarn in a spinning machine. A fiber ribbon is formed into a fiber ribbon, the ribbon is false twisted in a first twisting element, staple fiber ends are lifted from the false twisted ribbon in a second, re-spinning twist imparting element, the second element being driven in the same direction as but at a higher speen than the first element, the thus resulting spun yarn is given an additional, true twist, and is then wound on a bobbin.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: April 6, 1982
    Assignee: Elitex, koncern textilniho strojirenstvi
    Inventors: Stanislav Sraitr, Hana Srejberova
  • Patent number: 4244175
    Abstract: A three-dimensioned crimp filament is prepared by twisting a bundle of large denier filaments into a single twist while said filaments are stretched between a freely-rotatable first roller with a peripheral groove having 10-500 mm of diameter at a grooved portion and at least one other freely-rotatable second roller in a total denier of 50,000-3,000,000 denier by means of twisting action in a subsequent double twist step, double twisting said single-twisted filaments into a double twist up to said first roller and heating the filaments thus twisted into a double twist while passing them through a tubular guide means, cooling said double-twisted filaments to effect a heat-set while maintaining the twisting action; untwisting said double-twisted filaments thus heat-set to form three-dimensioned crimp filaments, and cutting said untwisted three-dimensioned crimp filaments into stable lengths.
    Type: Grant
    Filed: November 22, 1978
    Date of Patent: January 13, 1981
    Inventor: Sadaaki Takagi
  • Patent number: 4154051
    Abstract: An apparatus for manufacturing a three-dimensioned crimp filament comprising: a drive means for pulling filaments; a group of guide rollers arranged in a reverse U-shaped roller group, said roller group being provided ahead of said drive means and adapted to be rotated about a longitudinal axis such as to give forward and rearward portions of a plurality of filaments while stretched with a single twist formed thereon and being transferred by said drive means mutually opposite twisting actions; a pair of rotative rollers each provided with a groove, said roller pair being provided immediately after the roller at the forward end in said roller group and provided with a non-slip means for pulling the single twisted forward portion of said filaments at a transfer speed such that the filaments of said forward portion form into a double twist and are cooled sufficiently to effect a thermal set; a heating means provided ahead of said roller group and serving to heat the filaments formed with a double twist; a single
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: May 15, 1979
    Inventor: Sadaaki Takagi