Having Fluid Jet Twisting Means Patents (Class 57/333)
  • Patent number: 6192667
    Abstract: The inventive arrangement of bundles of fibrils in a part of a spin draw texturizing or draw texturizing machine presents a fan-type arrangement of these bundles of fibrils in which preferentially the longitudinal axes of the texturizing nozzles taking up the bundles of fibrils extend coaxially with a connecting line extending from a delivery point on a draw roll to the outlet of each individual texturizing nozzle.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: February 27, 2001
    Assignee: Maschinenfabrick Rieter AG
    Inventor: Armin Wirz
  • Patent number: 6134872
    Abstract: A compacted yarn is produced by providing a row of orifices subsequent to drafting along which the fiber strand is guided and after which the fiber strand is subjected to a twist according to the invention the suction air flow is monitored at least at one suction location and upon falling below a threshold, a signal is generated which can be used for shutdown or to alert personnel. The result is elimination of the reduction in yarn quality which can occur when the compaction system becomes blocked by lint, fiber accumulation or the like.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: October 24, 2000
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Andreas Olbrich
  • 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: 6076345
    Abstract: A method is provided for producing a yarn from at least two individual yarn components having different physical characteristics so that the produced yarn has a desired visual effect. The method includes continuously supplying at least one yarn component in the form of a bundle of continuous filaments and individually treating the bundle of continuous filaments in a treating stage. The treated bundle of continuous filaments is then conveyed to a collective compacting stage. At least one other yarn component is supplied from a spinning beam or a bobbin directly to the collecting compacting stage and the bundle of continuous filaments and at least one other yarn component are compacted collectively in a collective compacting device.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: June 20, 2000
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Hans-Joachim Weiss, Jorg Maier, Werner Nabulon
  • Patent number: 6058693
    Abstract: A spinning process provides for opening at least one sliver to single fibers and for depositing the single fibers on a moving collecting surface in the form of an expanded fiber veil. During transport on the collecting surface and, if required on a moving drafting surface downstream thereof, the fiber veil is condensed, transversely to its direction of motion, to a strand. The roving-like strand is transported through a nipping line and twisted to a yarn under the action of a rotating air stream. Fiber ends are hereby spread out from the strand, which are helically wrapped around the yarn.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: May 9, 2000
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Patent number: 6052983
    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: June 24, 1998
    Date of Patent: April 25, 2000
    Assignee: Belmont Textile Machinery Co., Inc.
    Inventors: Kevin E. Moran, Kurt Willy Niederer, Robert Edward Taylor, Ralph Samuel Jenkins, Jeffrey Todd Rhyne
  • Patent number: 6041587
    Abstract: A machine for making a mixed yarn by combining two false-twist textured yarns is disclosed. The machine comprises drawing systems (3A, 3B; 8A, 8B) arranged on either side of the texturing area and mounted alternately on two separately controlled parallel, shafts, and heat treatment units (5A, 5B) located in the false twisting area and having a temperature controlled by two mutually separated systems. The false-twist spindles (7) are power spindles with a speed that may be varied to suit each kind of yarn. The machine comprises joining device (9) for interlacing two yarns from two different texturing positions, the device being arranged, when seen from the front, between the positions so that the two yarns (2A, 2B) follow identical paths before being joined.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: March 28, 2000
    Assignee: ICBT Yarn
    Inventors: Carlos Matas Gabalda, Jean-Claude Dupeuble
  • Patent number: 6029435
    Abstract: To provide a threading apparatus that can thread yarn by feeding compressed air when the yearn is fed from a large diameter portion of a spindle member to a small diameter portion of the spindle member preceding the large diameter one. A spindle member is divided and a pipe including of a filter member is installed in the middle of the spindle, so that when compressed air is injected from the rear end of the spindle member having a large diameter toward its tip having a small diameter and preceding the rear end, a suction flow that sucks external air at the rear end is generated while excessive air is discharged to the exterior through the filter member, thereby maintaining a yarn feeding air flow in the center of the spindle member. Thus, the present invention can provide a threading apparatus that can feed compressed air to thread yarn from the rear end having a large diameter toward the preceding small diameter portion.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: February 29, 2000
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Akira Okamoto
  • Patent number: 5970700
    Abstract: A drafting and spinning apparatus is disclosed that produces highly uniform yarns with improved mechanical properties. The apparatus comprises a plurality of pairs of drafting rolls for drawing a sliver formed of one or more types of staple fibers, each fiber type having a predetermined effective fiber length. The plurality of pairs of drafting rolls comprises at least two pairs of intermediate rolls, with the distances between the nips of adjacent intermediate roll pairs being no more than the effective fiber length of the longest fiber type in the sliver. The apparatus further includes device for spinning the sliver into yarn at a take-up speed of greater than 150 meters/minute.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: October 26, 1999
    Assignee: Wellman, Inc.
    Inventors: Todd Joseph Scheerer, Winston Patrick Moore, Jesse Robert Fletcher, Rudy Lee Crews
  • Patent number: 5950413
    Abstract: A spinning apparatus is disclosed according to the invention having a drafting zone comprising at least four roll pairs for drawing a sliver comprising one or more types of staple fibers. The rolls pairs include a back roll pair, intermediate roll pairs and a front roll pair and the distance between the nip of the back roll pair and the nip of the adjacent intermediate roll pair, and the distances between the nips of adjacent intermediate roll pairs is no more than the effective fiber length of the longest staple fiber type in the sliver. The drafted sliver may be spun into yarns at high speeds, such as the speeds used in air jet spinning apparatus to provide yarns having increased strength and reduced defects. The present invention also includes a method of forming high quality and high uniformity yarns by advancing a sliver through a drafting apparatus and thereafter spinning the sliver into yarn.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: September 14, 1999
    Assignee: Wellman, Inc.
    Inventors: Todd Joseph Scheerer, Winston Patrick Moore, Jesse Robert Fletcher, Rudy Lee Crews
  • Patent number: 5934058
    Abstract: A method and apparatus are described for piercing severed yarn to a sliver in a spinning machine in a manner to prevent formation of an excessively long or frail piecing portion by passing leading yarn Y' through a twist device T; driving draft rollers 1, 2, which have been stopped following severance of the yarn to remove the thinned, tapered tip of sliver 6 from the front roller 4; and then introducing sliver for piecing into the twist device while removing a portion of the fibers constituting such a sliver to make the piecing portion thereof more nearly as thick as the leading yarn.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: August 10, 1999
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Osamu Hirao, Masahiko Nishimura
  • Patent number: 5927062
    Abstract: A spinning apparatus having a nozzle n1 that applies a rotating air current to fibers f and a hollow spindle s1, wherein a fiber introduction member E with a fiber guide surface e8 having a torsion angle of 100.degree. or more is disposed, without a needle shaped guide member e2, near the tip s1" of the fiber introduction side of the hollow spindle. Since the torsion angle of a fiber guide surface of the fiber introduction member is 100.degree. or more, fibers can be bundled easily without the needle shaped guide member and leaves and other foreign matter contained in a sliver are prevented from accumulating between the fiber introduction member and the hollow spindle, thereby reducing the frequency of yarn breakage and improving the spinning capability.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: July 27, 1999
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Koji Deno, Tomoaki Takahashi
  • Patent number: 5813209
    Abstract: Piecing method of a spinning machine whereby, after holding outside a twist device both a leading yarn ejected from the sliver guide entrance of a twist device in a stationary state and a sliver delivered by a re-operated draft device, the twist device is operated, the sliver supplied to the twist device and the fibers comprising the sliver are entangled in the leading yarn pulled from the twist device. The success rate of yarn piecing may be improved without detailed adjustment of the pulling timing of the leading yarn guided into the twist device and the supply timing of the sliver supplied to the twist device.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: September 29, 1998
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Osamu Hirao, Masahiko Nishimura
  • Patent number: 5802831
    Abstract: On a piecing method of a spinning machine which, after cutting a sliver between normally rotating draft rollers and stationary draft rollers, inserts a leading yarn into the spindle of a twist device and carries out piecing by the restarting of the draft rollers, restarting of the twist device and running of the leading yarn, approximately all the fibers comprising the tapered tip of the cut sliver form the joint part by being entangled in the leading yarn. As almost all of the fibers comprising the tapered tip of the cut sliver contribute to the joint part, the success rate of piecing is increased and a stronger joint part may be formed.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: September 8, 1998
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Yuji Imamura
  • Patent number: 5772136
    Abstract: The machine comprises a yarn guide for axially guiding the yarn on the receiving cross bobbin, for each wound off yarn at least one yarn watcher, a cutting device for cutting through the yarn, a yarn tensioner and a joining device for joining yarn ends, where a yarn monitor with a method of controlling is provided for controlling and correcting the assembled yarn bundle and rewinding the cross bobbin, a gripper device for gripping the yarn ends on the cross bobbin, a gripper device for inserting each yarn into the joining device, a gripper device for receiving and holding the yarn ends, a wind-off eye for the shared winding-off of the assembled yarns installed above the yarn joining devices, and a method of control for these devices, where the method of control are separately controlled.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: June 30, 1998
    Assignee: Textielmachinefabriek Gilbos N.V.
    Inventors: Erik Gilbos, Emiel Rubbrecht, Christian Van Hautte, Tom Jacobs
  • Patent number: 5724802
    Abstract: There is disclosed a method for false twist texturing comprising the steps of supplying a yarn hot (11) to a twist trap (12) upstream of a false twist device (13) instead of supplying heat to the yarn intermediate the twist trap and the false twist device.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: March 10, 1998
    Assignee: University of Manchester Institute of Science and Technology
    Inventor: Peter William Foster
  • Patent number: 5704204
    Abstract: This invention is related to a yarn piecing apparatus of a spinning machine arranged with a holding member (12) that holds the parent yarn (Y') which is inserted in the hollow spindle (6) of the spindle member (5) which is seperated from the nozzle member (2), at a predetermined tension so that it does not rotate due to the rotating air current from the nozzle member. As the parent yarn (Y') inserted in the hollow spindle (6) of the spindle member (5) which is seperated from the nozzle member (2) is held by the holding member, there is no rotation of the parent yarn (Y') by the rotating air current and consequently, fibers can be reliably attached to the parent yarn (Y') and the success rate of yarn piecing can be increased.
    Type: Grant
    Filed: January 3, 1996
    Date of Patent: January 6, 1998
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Hiroshi Mima, Yuji Imamura
  • 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: 5673549
    Abstract: A method and apparatus for producing randomly variegated multiple strand wrapped yarn in twisting together two or more yarns at a plurality of yarn twisting stations. At each station a pneumatic twisting head is disposed in which randomly turbulent air currents are created in a chamber in the twisting head by compressed air flowing into the chamber from a manifold through bores in the twisting head, thereby randomly twisting together two or more yarns in the chamber.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: October 7, 1997
    Assignee: Caress Yarns, Inc.
    Inventor: William A. McNeill
  • Patent number: 5673547
    Abstract: A spinning apparatus having a spinning section for forming yarn by applying a rotating air current of predetermined air pressure to a supplied fiber bundle and twisting the yarn while opening an end of the fiber bundle, and having a piecing section for reverse threading a spun yarn end into that spinning section. The spinning apparatus has a high pressure application member for applying high pressure air at a pressure higher than the aforementioned predetermined air pressure to such fiber bundle during the predetermined time after the spun yarn end is reverse threaded into the spinning section. The high pressure application member includes a first air circuit for supplying the aforementioned predetermined air pressure, a second air circuit that supplies air at a pressure higher than the aforementioned predetermined air pressure and a change-over member between the first and second air circuits.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: October 7, 1997
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Kenji Baba, Shinichi Satomi, Yuji Imamura
  • Patent number: 5647197
    Abstract: A spinning apparatus having a nozzle (n1) that exerts the actions of a rotating air current on the fiber (f), a hollow spindle (s1) and a fiber introduction member (e2) positioned opposite the inlet end part (s1") of the hollow spindle with a fiber guide member (E) arranged with a fiber guiding surface (e9) twisted in the rotation direction of the air flow and the fiber introduction member (e2) projecting from the fiber guide member toward the hollow spindle. The end part of the guide member (E) may be formed into a flat or a curved shape whereby a spun yarn with improved fiber evenness and having higher strength, a round cross section, a better exterior and resembling blend yarn which differs from core yarn, can be spun. Furthermore, improvements in the spinning properties and success rate of yarn piecing can be realized.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: July 15, 1997
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Yuji Imamura
  • Patent number: 5644909
    Abstract: An alternate twist plied yarn formed from a plurality of strands of singles yarn twisted in alternating directions in lengthwise intervals of first half-cycles of twist at a predetermined twist level followed by second half-cycles of twist at the same twist level with reversal nodes therebetween, the singles twisted yarns being ply-twisted together in alternating directions in lengthwise intervals of first half-cycles of ply-twist followed by second half-cycles of ply-twist, there being a bond formed adjacent each node wherein the first half-cycle of ply-twist is located within the bond and the second half-cycle of ply-twist originates at one end of the bond, the twist level in the singles twisted yarn is between 25% in the same direction and 60% in the opposite direction of the twist applied to the singles yarns before plying.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: July 8, 1997
    Assignee: E.I. Du Pont de Nemours and Company
    Inventors: Warren Francis Knoff, Robert William McAllister, Peter Popper, Steven Kikuo Shibata, Robert Edward Taylor, Paul Wesley Yngve
  • Patent number: 5632139
    Abstract: An apparatus and method of using the same are presented for commingling synthetic multifilament yarns such as polyester or the like. The apparatus includes a pair of spaced apart fluid jets which direct air at an acute angle from different directions to the moving yarn to distort and mesh the filaments. The first fluid jet is directed in a forward direction (with the yarn travel) whereas the second jet is in a reverse or opposing direction to the yarn path. The method utilizes compressed air and a high velocity yarn to form nips therealong at approximately 10 to 14 millimeter spacings to create a commingled yarn which is cohesive for use on high speed looms and for other operations.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: May 27, 1997
    Assignee: Southridge Corporation
    Inventor: John E. Tate
  • Patent number: 5619849
    Abstract: A method and apparatus for producing randomly variegated multiple strand yarn in twisting together two or more yarns at a plurality of yarn twisting stations. At each station a pneumatic twisting head is disposed in which randomly turbulent air currents are created in a chamber in the twisting head by compressed air flowing into the chamber from a manifold through bores in the twisting head, thereby randomly twisting together two or more yarns in the chamber. The yarns which have been twisted together are taken up over a plurality of traversing drums commonly mounted on a shaft which is driven by an alternating electric current motor controlled by a control device which operates to start and restart the motor on a predetermined cycle including a variation of the electrical input sufficient to result in randomly unpredictable inertia resistance of the traversing drums to rotational speed variation, thereby creating randomly unpredictable take-up of the yarns to produce non-uniform random twist in the yarns.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: April 15, 1997
    Assignee: Caress Yarns, Inc.
    Inventor: William A. McNeill
  • Patent number: 5617714
    Abstract: A drafting unit for a ring spinning device is described for use on a ring spinning device, comprising two delivery rollers (1, 2) defining between them a delivery nip (3) for at least one drawframe-treated roving (4), one of them forming a deflection length (5) with a slot-shaped suction zone (6) for the roving (4) exiting the exit nip (3), which extends between the delivery nip (3) and a pressure roller (7) arranged downstream in the sense of deflection, and having an air nozzle (8) offset sidewards with respect to the suction zone (6) for a blast of air directed towards the delivery roller (1) with a flow component transverse to the suction zone (6) which extends in an arc-shaped path between its feed end and its discharge end with the air nozzle (9) on the inside of the arc.
    Type: Grant
    Filed: January 19, 1996
    Date of Patent: April 8, 1997
    Inventor: Ernst Fehrer
  • Patent number: 5551225
    Abstract: A fluff suppression apparatus comprising a pair of rollers disposed with axes of rotation thereof crossed with each other and in contact with each other for nipping a spun yarn thread, and at least one of the pair of rollers has, at a contacting portion thereof with the spun yarn thread, has resiliency and flexibility and has a cavity formed in the inside thereof.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: September 3, 1996
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Hiroshige Maruki, Tsutomu Mekata
  • Patent number: 5528895
    Abstract: A spinning apparatus for producing a spun yarn by using swirling air currents to twist a non-twisted short staple fiber bundle drafted by a drafting unit. A nozzle block having at least one nozzle provides a swirling air current that acts upon the fiber bundle. A fiber bundle passage is defined by the nozzle block and a needle holder having a substantially central, longitudinal axis and a guide surface that twists relative to the longitudinal axis. A guide member associated with the needle holder projects toward the inlet of a hollow spindle.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: June 25, 1996
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Koji Deno
  • Patent number: 5511373
    Abstract: A method and apparatus for piecing a sliver and at least one of a leading yarn and a bobbin yarn. A nozzle member and a spindle member having a hollow spindle are provided. A relative spacing is established between the nozzle member and the spindle member. At least one of a leading yarn and a bobbin yarn is inserted into the hollow spindle of the spindle member relatively spaced from the nozzle member. The relative spacing between the spindle member and the nozzle member is decreased, so that the spindle member and the nozzle member mutually form an air chamber. A compressed air flow is directed into the air chamber. Sliver is supplied to at least one of the leading yarn and the bobbin yarn, and the sliver and at least one of the leading yarn and the bobbin yarn are pieced together.
    Type: Grant
    Filed: January 24, 1995
    Date of Patent: April 30, 1996
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Susumu Banba
  • 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: 5481863
    Abstract: A spinning device for producing a spun yarn from a staple fiber bundle. A staple fiber bundle is supplied to a spinning nozzle via the front rollers of a draft unit. A pair of delivery rollers is positioned downstream from the spinning nozzle and spaced from the front rollers by a distance that is shorter than the length of the longest fibers in the staple fiber bundle.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: January 9, 1996
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Naritoshi Ota
  • Patent number: 5433365
    Abstract: A nozzle device for processing of synthetic yarns for intermingling or texturization. The nozzle device has a housing with an inlet end and an outlet end. The inlet end is located upstream in relation to the outlet end. An inner nozzle member is provided and has a conical outer wall portion and an essentially axial passage. An outer nozzle member is provided and has a conical inner wall portion. Both inner and outer nozzle members are kept in position within the housing. The conical outer wall section of the inner nozzle member and the inner wall portion of the outer nozzle member together form an outwardly conical gap having an upper or upstream end and a lower or downstream end. Inlet conduits or ducts are provided for passing a fluid into the housing and into a region thereof adjacent the upper end of the conical gap. The conical gap is defined by a generally annular cross-sectional area in any radial plane between the upper and the lower end of the gap.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: July 18, 1995
    Assignee: Filteco S.p.A.
    Inventor: John Davies
  • Patent number: 5429575
    Abstract: In a cigarette filter rod manufacturing plant at least one tow bale (6; 108) is located in a position remote from the corresponding tow opening machine (2; 100) and a conveying system (10; 112) is provided for transporting the tow to the machine. In a preferred arrangement the conveying system comprises a pneumatic duct (10) in which the tow is conveyed with the assistance of air movers (12). Removing the tow bales from the vicinity of the machines, preferably to a common area, allows flexibility in laying out a production floor and provides easy access for replacement of the bales.
    Type: Grant
    Filed: April 22, 1992
    Date of Patent: July 4, 1995
    Assignee: Molins PLC
    Inventors: Richard R. Armour, Anthony R. Brown, Kenneth B. Carter, Peter A. Clarke, Kevin R. Fincham, Albert D. Seim, II
  • Patent number: 5398493
    Abstract: There is provided a spindle device for use in a spinning machine which produces little noise, which can eliminate the need for a rotational drive mechanism for a tubular spindle, for which bearing life is prolonged, and which can prevent waste threads from invading inside the bearings. A tubular spindle accommodated in a housing is rotatably supported by static-pressure pneumatic bearings. A cap, having nozzles and forming a spinning stream of air therein with compressed air blown off through the nozzles, is disposed at the tip portion of the tubular spindle. The tubular spindle radially supported by a film of air blown out through the static-pressure pneumatic bearings is rotated by the spinning stream of compressed air formed in the cap.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: March 21, 1995
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Masayoshi Onishi, Takeshi Takahashi
  • Patent number: 5392588
    Abstract: A method for spinning yarn produce the yarn having properties generally comparable to those of ring spun yarn. A rotatable hollow shaft having an entrance at one end and an exit at the other is rotatable about an axis extending in a direction A. A number of free fibers are fed in the linear direction A in a fiber mass, certain of the fibers having free trailing ends. The fiber mass is passed into the interior of the hollow rotatable shaft through the entrance. An air flow is established with respect to the shaft to effect separation of the free trailing ends of the fibers, preferably by establishing an air flow path that is initially substantially unidirectionally in direction A and then is deflected to move at an angle with respect to the direction A away from the shaft. The shaft is rotated at high speed about its axis so that the trailing ends of the fibers wrap around other portions of the fiber mass to produce a yarn, and the yarn is withdrawn through the exit of the shaft.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: February 28, 1995
    Assignee: Burlington Industries, Inc.
    Inventor: Elbert F. Morrison
  • Patent number: 5390485
    Abstract: A draft device is provided with a rotatable porous roller and a suction tube for establishing a negative pressure within the porous roller. A pneumatic spinning apparatus is provided with a spindle and a nozzle for exerting a whirling air current on a fiber bundle from the draft device. A waste transport pipe is provided for circulating waste discharged from the spinning apparatus back to the porous roller. Waste discharged from the spinning apparatus is thereby recycled to join with the fiber bundle from the draft device.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: February 21, 1995
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Hideshi Mori
  • Patent number: 5379582
    Abstract: A spinning nozzle comprises first and second nozzles provided with jetting holes through which compressed air is jetted into tubular yarn passages extending along an imaginary center line of the spinning nozzle, and arranged in series coaxially with the imaginary center line, and the second nozzle is provided in its outlet end with a balloon controller having a through hole having substantially a triangular cross section. The size of the balloon is limited to that of a circle inscribed in the through hole of the balloon controller, so that twists inserted in the yarn in the second nozzle propagate stably to a portion of the yarn in the first nozzle.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: January 10, 1995
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Yoshihisa Inoue, Koichi Doi, Hiroshige Maruki, Teruo Nakayama
  • Patent number: 5379500
    Abstract: The invention relates to the production of untwisted yarns from at least two fibril bundles. It gives intermediate method steps, which are so introduced between the main steps of the conventional production method for such yarns (spinning, stretching and texturing), that the reciprocal position of the individual fibril bundles resulting from the arrangement of the spinnerets can be retained through the process. A non-positively acting false twister for each individual fibril bundle, whose strength or thickness can be varied, also makes it possible to reproducibly vary the mixing of the fibrils of the individual bundles in their contact zones.
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: January 10, 1995
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Werner Flachmueller, Hans-Joach Weiss
  • Patent number: 5351472
    Abstract: A fluffing suppressing device for a winder for winding spun yarns capable of suppressing fluffing to a degree that may not cause troubles attributable to fluffs when the spun yarns are used as warp yarns on an air jet loom or the like. The present invention provides a fluffing suppressing device to be placed in a yarn path on the winder comprising a nozzle having an air injection holes for injecting air into a yarn passage in direction tangent to the yarn passage.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: October 4, 1994
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Kenji Ohashi
  • Patent number: 5323599
    Abstract: A process and apparatus for treating yarn formed on an open-end spinning machine of the type wherein the yarn is drawn from a rotor through a navel and through draw-off rolls is provided. The yarn is guided from the navel to the draw-off rolls in a path at least a portion of which is inclined with respect to the axis of the navel and a false twist is applied to the yarn during its travel in the inclined portion of the path between the navel and the draw-off rolls. The yarn is permitted to untwist between the false twist application and the draw-off rolls in response to the applied false twist. The untwisting of the yarn causes fiber ends on the surface of the yarn to project outwardly in a hairiness or fleeciness producing manner. The false twist applying element can include a member which produces a rotating air stream about the periphery of the traveling yarn.
    Type: Grant
    Filed: August 4, 1992
    Date of Patent: June 28, 1994
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz-Georg Wassenhoven
  • Patent number: 5299345
    Abstract: The invention relates to the production of untwisted yarns from at least two fibril bundles. It gives intermediate method steps, which are so introduced between the main steps of the conventional production method for such yarns (spinning, stretching and texturing), that the reciprocal position of the individual fibril bundles resulting from the arrangement of the spinnerets can be retained through the process. A non-positively acting false twister for each individual fibril bundles, whose strength or thickness can be varied, also makes it possible to reproducibly vary the mixing the fibrils of the individual bundles in their contact zones.
    Type: Grant
    Filed: May 12, 1993
    Date of Patent: April 5, 1994
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Werner Flachmueller, Hans-Joach Weiss
  • Patent number: 5295349
    Abstract: A pneumatic spinning apparatus comprises a nozzle block having a nozzle which gives a whirling air stream to a fiber bundle coming out of the draft device, a spindle having a fiber bundle passage, a guide member with its forward end protruding into a spindle inlet port, and an introduction tube having a fiber bundle passage which has been separated into a plurality of parts and fixed at the nozzle block inlet side.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: March 22, 1994
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Akira Okamoto
  • Patent number: 5263310
    Abstract: A spinning apparatus which imparts a turning air stream to an untwisted short fiber bundle drafted by a draft device to twist it to produce a spun yarn. A guide member supporting body having an extreme end projected conically is secured within a nozzle block for imparting a turning air stream to a fiber bundle moved out of a draft device, and the guide member supporting body having one side cut to form a gap adjacent to the nozzle block.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: November 23, 1993
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Shigeki Mori
  • Patent number: 5263311
    Abstract: A method of modifying surface characteristics, such as hairiness, and trash content by passing a spun yarn through an air jet nozzle. Data show reduced hairiness and improved cleanliness over normally wound yarn.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: November 23, 1993
    Assignee: Institute of Textile technology
    Inventors: Ralph W. Feil, Thomas M. Ellis
  • Patent number: 5243813
    Abstract: In a process and arrangement for false-twist spinning, it is provided that, by use of an air current in the delivery area of a drafting unit, an increased number of fiber ends are spread away which subsequently, in a controlled manner, are wound around the sliver by means of a guiding element moving in the travelling direction of the sliver and holding the spread-away fiber ends.
    Type: Grant
    Filed: January 22, 1992
    Date of Patent: September 14, 1993
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Patent number: 5237810
    Abstract: A novel false twist spinning process in which a sliver (60) is twisted by a mechanical force-twisting device (58) between the front rollers (54) of the drafting unit (51) and the draw off rollers (59). The spinning tension is so adjusted that the false-twisted sliver (60) is prevented from assuming a helical shape and a balloon shape at least in the zone between the nip line (10) of the drafting unit (51) and a yarn guiding element (55) disposed before the false twisting device. In an apparatus for the practice of the process, the mechanical false twisting device (58) comprises discs (58A) or aprons (58B) and the yarn guiding element (55) comprises of a false twisting nozzle (55A, 55B).
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: August 24, 1993
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Herbert Stalder, Rolf Binder
  • Patent number: 5230210
    Abstract: A nozzle mechanism for generating a twist in a yarn in an air-jet spinning machine, the nozzle comprising a central cylindrical duct having an axis through which a yarn is delivered in a selected direction and a bore having an axis and a diameter entering tangentially into the cylindrical duct for inputting compressed air into the duct, the bore entering the duct such that the axis of the bore forms an obtuse angle with the axis of the duct, the bore further entering the duct such that the perpendicular distance between the axis of the bore and the point of tangential entry of the bore into the duct is less than half the diameter of the bore.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: July 27, 1993
    Assignee: Maschinenfabrick Rieter AG
    Inventors: Andrew Barritt, Herbert Stalder
  • Patent number: 5228282
    Abstract: An apparatus for making alternate S and Z twist plied yarn from individual singles yarns. The apparatus twists the singles yarns as they move in a path through the process, twisting the individual yarns in either an S or Z direction. The bonding of the ply-twisted yarns at a node while applying twist forms a bond characterized by numerous individual spaced bond sites between individual filaments that are distributed throughout the bond.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: July 20, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Otis B. Tinsley, Paul W. Yngve
  • Patent number: 5228281
    Abstract: An arrangement for pneumatic false-twist spinning having a drafting unit, a false-twisting device which follows, having a connected withdrawal device and having a rotation body arranged between the false-twisting device and the drafting unit. It is provided that the rotation body is arranged directly behind the pair of delivery rollers of the drafting unit in such a manner that its suction device is effective into the area of the nip line of the pair of delivery rollers of the drafting unit. A suction slot of the rotation body has a section which extends essentially in the direction of the nip line and is situated in the area of a deflection of the sliver leaving the pair of delivery rollers.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: July 20, 1993
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Patent number: 5222352
    Abstract: A process and an arrangement for the spinning of staple fibers into a yarn is disclosed in which sliver-shaped fiber material is opened up into individual fibers which are fed to a collecting surface which moves at a speed which corresponds to at least the feeding speed of the individual fibers. The collecting surface conveys the fibers to a withdrawal point with the collecting surface tapering between the feeding point and the withdrawal point. The collecting surface operates to bundle the fibers during the conveying to the withdrawal point to form a fiber composite which is withdrawn at the withdrawal point while receiving a twist. It is provided that the withdrawal of the fiber composite at the withdrawal point takes place in a direction which corresponds essentially to the conveying direction of the fiber composite on the collecting surface, a withdrawal speed being provided which is essentially equal to the conveying speed of the collecting surface.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: June 29, 1993
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Patent number: 5220778
    Abstract: A method for the production of untwisted yarns from at least two fibril bundles. Intermediate method steps, which are introduced between the main steps of the conventional production method for such yarns (Spinning, stretching and texturing), allows the receiprocal position of the individual fibril bundles resulting from the arrangement of the spinnerets to be retained through the process. A non-positively acting false twister for each individual fibril bundle, whose strength or thickness can be varied, also makes it possible to reproducibly vary the mixing of the fibrils of the individual bundles in their contact zones.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: June 22, 1993
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Werner Flachmueller, Hans-Joach Weiss