Piecing Up Patents (Class 57/261)
  • Patent number: 8915055
    Abstract: The spinning station of a spinning machine includes a yarn end disposal means, arranged between the outlet of the spinning device and the winding device, and with the aid of which an end section of the produced yarn is separated from the rest of the yarn and eliminated. Furthermore, a process for removing an end section of a yarn at a spinning station of a spinning machine prior to the subsequent piecing process is proposed, wherein the end section is gripped, cut off, and subsequently eliminated from the area of the spinning station with the aid of a yarn end disposal means arranged between the outlet of the spinning device and the winding device.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 23, 2014
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Adalbert Stephan, Josef Ludvícek, Gernot Schäffler
  • Patent number: 7908839
    Abstract: Two-for-one twisting spindle having a pneumatically actuated threading device, with a spindle shaft rotatable about a vertical axis partially configured as a hollow shaft with a lower feed bore extending coaxially to the rotational axis, and with an injector element opening into a thread guide channel of a thread guide ring temporarily connectable during threading to a compressed air source. Part of the compressed air feed to the injector element is formed by the feed bore. The compressed air feed comprises a connection element (27) with a curved air channel (26), which connects the feed bore (24) to the injector element (16). The connection element (27) is configured as a separate component and the air channel (26) is adapted to the flow requirements.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: March 22, 2011
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Heinz Fink, Georg Tetzlaff, Sergi Singer
  • Patent number: 7370464
    Abstract: A method for feeding a yarn to a textile machine for its processing and preparation for subsequent use, such as an interlacing, texturizing-interlacing or doubling machine, the yarn including at least two threads (3, 4) which are bound together, the first thread (4) and second thread (3) unwinding from a corresponding bobbin, the first (4) of said threads (3, 4) being an elastomeric thread. This latter is unwound from the relative bobbin (6) by withdrawal under free tension, said elastomeric thread (4) then being subjected to tension regulation in order to feed it at constant tension to the next stage, in which it is bound to the other thread.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: May 13, 2008
    Inventor: Tiziano Barea
  • Patent number: 7155890
    Abstract: A production device and production method for carbon fibers of the present invention is utilized to reliably obtain a connecting portion having a high process passing property with a simple mechanism so as to achieve a continuous operation and improve a firing process operability for achieving a low cost. A pair of yarn gripping devices for overlaying precursor fiber yarns to be connected one upon another and gripping the overlaid ends is provided, and a fluid processing unit for applying an entangling process by jetting a plurality of rows of fluid in along a yarn length direction is provided between the pair of yarn gripping devices. A plurality of discontinuous thread handling areas of the precursor fiber yarns in a fluid jet area of the fluid processing unit having fluid jet holes are disposed at predetermined intervals.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: January 2, 2007
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Atsushi Kawamura, Hiroshi Inagaki, Takahiko Kunisawa
  • Publication number: 20020144496
    Abstract: In a spinning position of a spinning machine a longitudinal fibre array first is refined in a drafting process, and the refined fibre array (10) then is subject to a twist imparting process, and is taken off the twist-imparting zone as a yarn (11). In case of an interruption of the spinning process the intake into the refinement zone is stopped before the delivery from the refining zone is stopped in such a manner that the longitudinal fibre array is severed between the intake and the delivery zones forming a free front end zone. The free end (11) of the yarn, generated by the interruption of the spinning process is treated in such a manner that a yarn end zone (1) is formed tapering off, and is positioned upstream from the twist imparting zone. Ad the spinning process is resumed the movements of the yarn end zone (1) and of the fibre array front end zone (2) for imparting twist are coordinated in time sequence in such a manner that these two zones overlap as they are subject to the twist imparting process.
    Type: Application
    Filed: December 18, 2001
    Publication date: October 10, 2002
    Applicant: MASCHINENFABRIK RIETER AG
    Inventors: Peter Anderegg, Christian Griesshammer
  • Patent number: 6453656
    Abstract: The object of the present invention is to provide a piecing method and a piecing device of a spinning machine capable of blowing off the sliver effectively during piecing and controlling the joint thickness. Accordingly, a means is provided for sucking by guiding to the suction pipe 34 disposed between the twisting device 17 and the draft device 10 by blowing pressurized air to the sliver S so as to carry out piecing of the leading yarn Y fed back to the twisting device 17 and the sliver S from the draft device 10. The pressurized air is blown from the periphery of the spinning nozzle 22 of the twisting device 17 in opposition toward the sliver from the draft device.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: September 24, 2002
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Noboru Nakayama
  • Patent number: 6434921
    Abstract: A method for the pneumatic splicing of threads or yarns containing an elastomer comprises, in sequence, at least the following phases: introduction in a splicing chamber (11), belonging to a splicing device (10, 10a, 10b, 10c), of the ends of the threads (12, 15) to be spliced together; a first input of one or more jets of compressed air into the splicing chamber (11) to perform a first interlacing of the threads (12, 15); cutting of the ends of the threads (12, 15), with scissors (18, 19), after the first input of air; a second input of one or more jets of compressed air into the splicing chamber (11) to complete the splicing of the cut ends of the threads (12, 15) and release of the spliced thread with the return of all the parts of the splicing device (10, 10a, 10b, 10c) to their original position.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: August 20, 2002
    Assignee: Mesdan S.p.A.
    Inventor: Mauro Premi
  • 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: 20020073683
    Abstract: The invention relates to a method and an apparatus to monitor a yarn piecing joint on a spinning machine with a plurality of piecing stations (1) to which a piecing robot (2) equipped with a yarn piecing apparatus (13) with adjustable yarn piecing speed can be presented, whereby each spinning station (1) or the piecing robot (2) is provided with a yarn monitoring apparatus (6) to monitor the yarn quality. According to the invention the piecing robot (2) and the yarn monitoring apparatus (6) of the spinning station (1) are connected via a communication system through which the piecing parameters of the piecing robot (2) are transmitted to the yarn monitoring apparatus (6).
    Type: Application
    Filed: November 27, 2001
    Publication date: June 20, 2002
    Inventor: Martin Zipperer
  • Publication number: 20020056265
    Abstract: The object of the present invention is to provide a piecing method and a piecing device of a spinning machine capable of blowing off the sliver effectively during piecing and controlling the joint thickness. According to a means for sucking by guiding to the suction pipe 34 provided between the twisting device 17 and the draft device 10 by blowing pressurized air to the sliver S as to carry out piecing of the leading yarn Y fed back to the twisting device 17 and the sliver S from the draft device 10, the pressurized air is blew opposing toward the sliver S from the periphery of the spinning nozzle 22 of the twisting device 17.
    Type: Application
    Filed: October 15, 2001
    Publication date: May 16, 2002
    Applicant: Murata Kikai Kabushiki Kaisha
    Inventor: Noboru Nakayama
  • Patent number: 6339921
    Abstract: A piecing device with an evaluation arrangement for determining parameters of an automatic piecing process at a spinning station (1) of an open-end spinning frame, wherein a control device is provided which, initially in a test phase, controls the creation of at least one test piecing without a supplementary delivery of additional fiber and the subsequent removal of the created test piecing. The evaluation device is designed for determining the length of a thinner extent of the test piecing downstream of the test piecing as viewed in the direction of yarn travel, and for the determination from the detected length of the thinner extent an amount of supplementary delivery of additional fiber required for compensating the thinner extent. A reduction of the draft which is effective during the test phase assures an interference-free checking of the test piecing. The optimization phase for piecings is shortened and leads to a more accurate result when determining the supplementary delivery of additional fiber.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: January 22, 2002
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Manfred Lassmann, Heribert Mertens
  • Patent number: 6332311
    Abstract: The present invention provides a hairiness suppressing device for an automatic winder that can perfectly balloon a spun yarn using a whirling current in a yarn passage. In a hairiness suppressing device (1) comprising a yarn inserting opening (9) that extends and opens in an axial direction of a yarn passage (8) in which a whirling current acts on a spun yarn, a wedge-shaped cover member (29) is provided that can open and close the yarn inserting opening (9). When a swiveling body (26) is swivellably moved to open the cover member (29), the yarn can be introduced into the yarn passage (8) through the yarn inserting opening (9). When the swiveling body (26) is swivellably moved to close the cover member (29), the whirling current in the yarn passage (8) is prevented from leaking from a side of the yarn passage (8).
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: December 25, 2001
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Yuji Todo, Hidetoshi Kimura, Koji Takayasu
  • Patent number: 6298647
    Abstract: A yarn-connecting device for a cheese-producing textile machine having a pneumatic splicing device (22) located outside of the normal travel path of the yarn, a gripper tube (25) acted upon by suction air for manipulating yarn ends to be spliced, and a pivotable gripper tube flap (18) for closing the gripper tube mouth (27). A control crank (33) is arranged at an upper end position (II) of the gripper tube (25) for acting on the gripper tube flap (18) such that in the course of pivoting the gripper tube (25) into the position (II), the gripper tube flap (18) is lifted slightly off the gripper tube mouth (27), while the gripper tube flap (18) always closes the gripper tube mouth (27) when the gripper tube (25) is pivoted out of the position (II).
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: October 9, 2001
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Herbert Rüskens, Ulrich Stevens, Siegfried Schatton, Gerard Küsters, Ottmar Neubig, Wolf-Michael Ruh
  • Patent number: 6272831
    Abstract: Airflows A1, A2 of compressed air are generated along a predetermined guiding surface 9, and directed against the yarn layer surface F of a package, causing the yarn end to be retrieved. A high-speed airflow A1 from the compressed air, and an accompanying airflow A2 which is pulled along with the high-speed airflow A1 lift the yarn end E from the yarn layer surface F. The yarn end E can be guided and retrieved with airflow A1, making use of the Coanda effect along the guiding surface 9. Accordingly, a yarn end can be easily and reliably retrieved using a low-capacity compressor.
    Type: Grant
    Filed: April 21, 1999
    Date of Patent: August 14, 2001
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Akira Okamoto
  • Patent number: 6209304
    Abstract: A device for producing spun yarn by means of an airflow acting in the area between a sliver guide and a spindle (13) on fibers of a non-twisted sliver (10) drafted and delivered by a drafting arrangement in order to twist the fibers. Thereafter, the sliver (10) is passed through the spindle (13). Outside of an imaginary center line (9) of the traveling sliver (10), the sliver guide is arranged such that the fibers are passed along the inward lying surface of the sliver guide. The sliver guide comprises fiber guide elements (16) spaced apart from each other, which permit the free passage of a core fiber bundle. An improved spinning process, along with high productivity and increased yarn strength is possible by means of the device of the invention. The spinning device can be manufactured and operated cost-effectively.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: April 3, 2001
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Helmut Feuerlohn, Liberto Coll-Tortosa, Frances Roig Munill, Thomas Weide, Jose Antonio Tomero-Garcia, Oliver Schulze
  • Patent number: 6109014
    Abstract: A method and a device for initiating the rewinding process after a yarn break in single stage pot spinning. In the process, a yarn detaching device (14) is introduced into a spinning centrifuge (3) rotating a high rpm, and places a cutting edge (16, 48) against the conically wound portion (32) of a spinning cake (15) deposited on the inner wall (26) of the spinning centrifuge (3). The yarn detaching device (14) has a yarn guide device, whose yarn guide contour (17, 43) covers the cutting edge (16, 48) of the yarn detaching device (14) such that in the course of the initiation of the rewinding process lower winding layers of the conically wound portion (32) are lifted on the rewinding tube (9) and in this way dependably prevents the winding of yarn around the yarn detaching device (14) during the rewinding process.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: August 29, 2000
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Karl Koltze, Peter Voidel, Bernhard Schwabe
  • 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: 6026636
    Abstract: A yarn false twist texturing apparatus which includes a serially arranged heater, cooling device, and twisting unit. In order to collect and remove the oil vapors arising within the false twist zone, the cooling device is configured as an elongate hollow body, and the yarn is conveyed for cooling in contact with the inside wall of the hollow body. A vapor extraction system is provided which communicates with the interior of the body. In another embodiment, a tubular protective body is arranged between the heater and the cooling device, and the interior chamber of the tubular protective body encloses the yarn and is connected to an extraction device. The advancing yarn may be wetted with a cooling fluid at a location between the heater and the cooling device, to facilitate the volatilization of the oil constituents in the yarn as well as cool the yarn.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: February 22, 2000
    Assignee: Barmag AG
    Inventors: Hellmut Lorenz, Peter Dammann
  • 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: 5927061
    Abstract: The present invention relates to a process to piece a yarn (2) to an open-end spinning device (1), in which a plurality of handling devices (4) on a service unit (3) traveling alongside a plurality of identical open-end spinning devices (1) execute different work motions and in which a yarn end is taken over by a presentation device (31) and is conveyed to the open-end spinning device (1), and is then returned into same for piecing. In this process all the handling devices (4) go through a joint motion phase and if necessary through an individual motion phase. To carry out this process the handling devices (4) are mounted on a common bearing device (5) which can be moved back and forth between at least two work positions (I, II) by means of a drive arrangement (50) controlled by the control device (6).
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: July 27, 1999
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventor: Dietmar Greis
  • Patent number: 5865022
    Abstract: A method and apparatus for piecing a broken end of yarn at an open end spinning station utilizing a piecing cart servicing the spinning station. To repair the yarn break, a defined yarn length is unwound off the winding bobbin and is temporarily stored in a yarn reservoir disposed between a yarn draw-off device and a lap drive of the piecing cart. Subsequently, the winding bobbin is acceleratively driven by the lap drive sufficiently in advance of actuating the yarn draw-off device to achieve a predetermined winding speed as of the time the withdrawal of spun yarn from the spinning unit resumes.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: February 2, 1999
    Inventors: Eike-Thomas Bode, Gerd Jansen
  • Patent number: 5862660
    Abstract: A method for removing both long and short yarn defects at the winding heads of a bobbin winding machine. Following the appearance of a yarn defect, the length of the defective yarn between the time of the appearance of the defect and the time of a subsequent yarn cut is determined. A suction tube is positioned in front of the winding bobbin to aspirate the defective yarn therefrom. The yarn is unwound, the entry of the yarn into the suction tube is determined by means of a sensor disposed therein, and the yarn length unwound from the winding bobbin and entering the suction tube is determined.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: January 26, 1999
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Rolf Haasen, Heribert Kargel, Hans-Gunter Wedershoven
  • Patent number: 5850729
    Abstract: An apparatus for detaching the terminal spiral winding of yarn from the surface of a spinning cop, utilizes a hook-like yarn catcher element movable vertically along the cop by a pulling device and movable into and out of engagement with the yarn surface of the cop by a spring-loaded guide linkage to which the catcher element is mounted. The guide linkage has two levers pivoted at two respective pivot locations on a base plate and pivotably connected at two spaced pivot locations with the catcher element for coordinated movement to control extension and retraction of the catcher element, the distance between the pivot locations on the base plate being greater than the distance between the pivot locations connected with the catcher element for pivoting the catcher element with an increasing angle of inclination relative to the lengthwise extent of the cop during extension of the catcher element.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: December 22, 1998
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Wolfgang Irmen
  • 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: 5809764
    Abstract: A piecing method for a spinning machine wherein, following stoppage of the spinning operations, after cutting the sliver (S) between the usually rotating draft rollers (13) and the stopped draft rollers (12) and before the restarting of drafting and spinning, the sliver (S) is once again cut between the usually rotating draft rollers (13) and the stopped draft rollers (12) by driving the stopped draft rollers (12) for a predetermined period of time and then stopping again, thus sliver (S) is supplied to the twisting part (2) by then driving the stopped draft rollers (12). Therefore, not only can the sliver fiber density of the sliver end supplied to the piecing area during piecing be increased, but that length of the tip of the sliver can also be shortened. Accordingly, the strength of the piecing part is increased and the length of the piecing part can be shortened.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: September 22, 1998
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Kenji Baba
  • Patent number: 5802835
    Abstract: A negative pressure distribution system for a textile spinning machine includes a negative pressure channel and a plurality of lines configured to deliver negative pressure to a device in the textile machine to carry out a desired task. A distributor is disposed between the negative pressure channel and the negative pressure lines. The distributor includes a housing having a variably positionable valve within the housing. The valve is positionable between a closed position wherein the negative pressure lines are pneumatically isolated from the negative pressure channel and a plurality of operable positions wherein at least one of the negative pressure lines is in communication with the negative pressure channel through the housing.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: September 8, 1998
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventor: Adalbert Stephan
  • 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: 5743077
    Abstract: A method is provided for manufacturing a new core wrap yarn which is strip resistant to the degree that it is able to be passed through a knitting needle at an entrance-exit angle of about 10.degree., at a tension of 100 grams and a speed of 100 meters per minute, without any apparent stripping or fuzz generation, wherein the method allows for convenient piecing-up operations.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: April 28, 1998
    Assignee: The United States of America as represented by the Department of Agriculture
    Inventors: A. Paul S. Sawhney, Craig L. Folk
  • 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: 5699971
    Abstract: A method and device for detecting the yarn end on a bobbin in a textile machine. The textile machine comprises a plurality of operating units situated next to each other and an attending device adapted to travel along the units and to stop at a selected one of the operating units. The attending device includes a selecting device provided with a detecting nozzle having a yarn sucking mouth. The detecting device is displaced into a detecting position in which the mouth of the detecting nozzle lies in the path of possible motion of a central tube of the bobbin. The bobbin begins to move towards the mouth of the detecting nozzle situated in its detecting position onto which the bobbin circumference comes to lie.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: December 23, 1997
    Assignee: Rieter Elitex a.s.
    Inventors: Zdenek Spindler, Vojtech Novotny, Petr Semrad
  • Patent number: 5689945
    Abstract: An apparatus and method for guiding a broken thread end in a yarn spinning machine into a position in readiness for piecing wherein the broken thread end is retrieved from a bobbin, routed through a yarn spinning mechanism, guided into the nip of a pair of rollers of an operating drafting apparatus without abrasion of or interference with the yarn end during the guiding of the yarn end and wherein the yarn end is deposited in a position in the drafting apparatus such that the yarn end is controllably withdrawn from the drafting apparatus through the spinning mechanism and pieced or joined with a new sliver as the yarn end is withdrawn.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: November 25, 1997
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Martin Tobler, Reto Debrunner, Martin Witschi
  • Patent number: 5682718
    Abstract: A yarn being spun in a spinning station of a spinning machine is drawn off with an apparatus which includes a pair of rollers for clamping the spun yarn in a gap between the rollers and transporting the spun yarn. The rollers include a draw-off roller being driven continuously in a draw-off direction at a given circumferential speed and a switchable feed roller for contacting the draw-off roller and for being driven through friction by the draw-off roller when contacting the draw-off roller. A method for drawing off the spun yarn includes positioning the yarn to be drawn off between the rollers while the feed roller is not contacting the draw-off roller. The feed roller is driven with a fluid in a circumferential direction and accelerated to a circumferential speed being at most the given circumferential speed. The feed roller is then placed in contact with the draw-off roller.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: November 4, 1997
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Andreas Bennewitz, Michael Stein
  • 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: 5651507
    Abstract: A yarn splicing device for textile winding machines comprises a splicer mechanism for pneumatically joining yarn ends, upper and lower clamping and cutting devices, and suction-actuated yarn placement devices for placing the yarn ends to be spliced. According to the invention, one yarn placement device is a gripper tube normally parked in a zero position upstream of the yarn travel. The gripper tube has a spring-biased, pivotable gripping flap and a yarn placement hook for simultaneously placing both the lower yarn and the upper yarn to be spliced. For that purpose, one of the gripper tube and gripper tube flap carries the yarn placement hook forwardly for manipulating the upper yarn and a yarn guide disposed between the yarn placement hook and the pivot axis of the flap for placing the lower yarn.
    Type: Grant
    Filed: June 29, 1995
    Date of Patent: July 29, 1997
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Herbert Ruskens, Leo Tholen, Siegfried Schatton, Ulrich Wirtz, Gregor Ruth, Joachim Stiller
  • Patent number: 5619848
    Abstract: A method and apparatus for automatically removing a slub from spun filament yarn and a sliver or roving of staple fibers. The sliver or roving of staple fibers are fed through a drafting apparatus to prepare a continuous bundle of staple fibers. The filament yarn is pretensioned such that a texture is temporarily substantially removed. The continuous bundle of staple fibers and the filament yarn are combined downstream of the drafting apparatus. The combined continuous bundle and the filament yarn are fed into a spinner. The spun filament yarn and staple fibers are monitored to detect imperfections of a predetermined magnitude. A first signal is generated upon detection of an imperfection of the predetermined magnitude. The feeding of the staple fibers is stopped in response to the first signal. The core yarn is clamped at a predetermined position in response to the first signal.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: April 15, 1997
    Assignee: Prospin Industries, Inc.
    Inventors: Manual Costales, Mark J. Yukob, Charles W. Proctor
  • Patent number: 5613355
    Abstract: A method for rewinding a spinning cake from a spinning pot of a pot spinning apparatus onto a rewinding body, preferably onto a tube as a yarn carrier, includes drawing a sliver to be spun in a drafting configuration, guiding the sliver in a pneumatic piecing aid, and depositing the sliver with a traversing yarn guide onto an inner wall surface of the rotating spinning pot as the spinning cake, while maintaining a requisite rotation for formation of a yarn. A yarn guide is moved toward the middle of the spinning cake in a last stroke being shorter than a next-to-last stroke of the yarn guide toward the middle of the spinning cake, once a predetermined size of the spinning cake is reached, before initiating rewinding of the spinning cake onto the rewinding body. A delivery of the sliver from the drafting configuration is stopped once a reversing point of the stroke is reached. The rewinding body is introduced into the spinning pot and the yarn is transferred onto the rewinding body.
    Type: Grant
    Filed: July 31, 1995
    Date of Patent: March 25, 1997
    Assignee: Schlafhorst AG & Co.
    Inventors: Karl Koltze, Volker Roland, Peter Voidel
  • Patent number: 5597129
    Abstract: A textile machine includes a bobbin winder for winding a textile bobbin having a longitudinal axis, a given length and a yarn package with a peripheral surface. A drive roller assembly includes a drive roller for rotationally frictionally driving the textile bobbin. The drive roller has an active width being substantially less than the given length of the bobbin. The drive roller has contact lines for contacting the peripheral surface of the yarn package of the bobbin. The contact lines are chronologically successive during rotation of the drive roller and are shifted relative to one another in the direction of the longitudinal axis of the bobbin.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: January 28, 1997
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Wilhelm Oehrl
  • Patent number: 5586428
    Abstract: Provided for a spinning machine, a roving bobbin changing apparatus which includes a roving end finding/pick-up section equipped with a roving end finding/pick-up mechanism at a leading side as viewed in a direction in which the roving bobbin changing apparatus is moved for roving bobbin exchange, and a roving tying/bobbin exchange section equipped with a roving bobbin exchanging means at a trailing side. The roving tying device is so disposed as to be movable between the roving end finding/pick-up section and the roving tying/bobbin exchange section. The roving tying device can be moved by a belt to a new roving grasping position in the roving end finding/pick-up section and a roving tying position corresponding to that of a full roving bobbin transfer means in the roving tying/bobbin exchange section.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: December 24, 1996
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Isao Asai, Toshinori Hasegawa
  • Patent number: 5566539
    Abstract: Two parallel spun yarns (8, 8a) are wound onto a joint cross-wound bobbin (15) in the machine. If one of the yarns breaks (e.g. 8), the bobbin (15) and the supply of slivers (32, 32a) to the drafting arrangements (11, 11a) are stopped. An end of the unbroken yarn (8a) is taken up by a suction tube (69) and the broken end of the yarn (8) is wound up on the bobbin (15). The ends of the two yarns (8, 8a) are retrieved, reversely routed through the spinning units (12, 12a), the bobbin (15) and the draw-off device (14) are restarted and, the yarns (8, 8a) are deposited in and simultaneously withdrawn from the drafting arrangements (11, 11a) for joining therein with the end of restarted slivers (32, 32a). The sliver stoppers (30, 30a), however, are restarted at different times. In this manner, repair of a breakage in two yarns being jointly wound up on a common bobbin is achieved.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: October 22, 1996
    Inventors: Rolf Binder, Martin Witschi
  • Patent number: 5557916
    Abstract: The process and device for setting optimal piecing parameters in the spinning machine when changing batches includes entering and storing in a memory of a central machine computer spinning machine data relevant to the piecing operation. At the start of the piecing operation, the machine data is transmitted from the central machine computer to a microcomputer of a piecing device. The microcomputer contains a piecing program and a database of piecing parameters pertaining to the piecing process. An optimal set of piecing parameters is computed with the piecing program in the microcomputer. The microcomputer incorporates the spinning machine data and computes from the database an optimal basic set of piecing parameters. The optimal set of piecing parameters is displayed at an optical display unit associated with the microcomputer and can be manually adjusted.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: September 24, 1996
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventors: Susanne Messmer, Josef Muller
  • Patent number: 5535581
    Abstract: A cans exchanging system whereby, out of cans arranged in plural rows in the longitudinal direction of a spinning frame, plural empty cans arranged in the direction orthogonal to the longitudinal direction of the spinning frame are carried out from the rows of cans, and plural full-loaded cans are carried in simultaneously to the carried-out position of the empty cans. A sliver piecing device for piecing together slivers, from sliver feeding cans to a spinning machine and slivers from full-loaded cans while carrying both cans on a cans exchanging carrier is mounted on the cans exchanging carrier.
    Type: Grant
    Filed: April 20, 1994
    Date of Patent: July 16, 1996
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Ryosuke Tahara, Hiroshi Tsuji
  • Patent number: 5531391
    Abstract: An automatic yarn winder wherein a yarn is taken up from a yarn supply bobbin and wound in a package and defects of the yarn is detected and the detected defect in the yarn is cut out and removed. The trailing cut end of the wound yarn and the leading end of the cut yarn are joined comprising yarn take-up device, stopping device for stopping yarn take-up when the number of detections becomes higher than a pre-fixed number for a fixed length of yarn being wound and taking up device for taking up the yarn from the yarn supply bobbin for a predetermined time after such stopping and joining the leading end of the remaining yarn on the yarn supply bobbin to the trailing end of the yarn on its package and re-starting taking up.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: July 2, 1996
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Atsushi Yamamoto
  • Patent number: 5524427
    Abstract: A sliver piecing unit 80 includes three sets of separable rollers 804 and 844, 806 and 846, and 808 and 848 for nipping a sliver S1 fed from a consumed can to a spinning machine. A throttling nozzle 870 is arranged between the second and third sets of rollers 806 and 846, and 808 and 848. The draft ratio between the first and second sets of rollers 804 and 844, and 806 and 846 can be varied between 1.0 and 2.0. A sliver feed unit 70 includes a separable first and second roller 702a and 702b for feeding a sliver S2 from a full can to the piecing unit 80 so that the slivers S1 and S2 are combined. The draft ratio between the first and second sets of rollers 804 and 844, and 806 and 846 is controlled to obtain combined slivers of a thickness corresponding to that of a single sliver. A nipping belt 884 and nipping roller 886 are provided at the outlet from the third set of the rollers 808 and 804 for obtaining a rubbing movement in the combined slivers.
    Type: Grant
    Filed: October 27, 1993
    Date of Patent: June 11, 1996
    Assignee: Howa Machinery, Ltd.
    Inventors: Shigeki Sekiya, Takashi Kogiso, Yoshio Kurachi, Toshiyuki Kuzutani
  • 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: 5484116
    Abstract: A method and apparatus for moving individual yarn ends into a yarn disposition at a yarn end joining device in a winding station of a bobbin winding machine includes moving individual in succession a yarn end from a delivery bobbin to the yarn end joining device, and a yarn end from a take-up bobbin to the yarn end joining device by a single yarn manipulator device.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: January 16, 1996
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Dieter Horak, Uwe Fabelje, Joachim Stiller, Dietmar Engelhardt, Norbert Corres, Petra Vautz, Arnold Muck, Ulrich Wirtz
  • Patent number: 5473879
    Abstract: An open-end spinning machine embodied as a yarn piecing unit for automatically repairing yarn breaks during bobbin winding and for replacing finished bobbins with empty tubes, and an auxiliary yarn transport arrangement for supplying and removing an auxiliary yarn used for the piecing operation. The auxiliary yarn transport arrangement has a yarn supply tube that can be positioned among various operating positions: (a) a first position wherein the auxiliary yarn is transferred to a yarn locating nozzle of the piecing unit; (b) a second operating position wherein the piecing cycle is initiated by spinning an end of the auxiliary yarn with individual fibers fed into the spinning rotor of the spinning machine; and (c) a third operating position wherein the auxiliary yarn and its pieced end is severed from the trailing length of newly spun yarn from the spinning rotor and the new yarn is applied to an empty tube in the winding creel of the spinning machine.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: December 12, 1995
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Heinz-Dieter Gobbels, Hans Raasch
  • Patent number: 5472128
    Abstract: A method and apparatus for sucking a free end of an optical fiber includes a sucking nozzle. The sucking nozzle is positioned downstream of a capstan wheel around which the optical fiber is wound. The opening of the sucking nozzle is positioned within a range of movement of a path line of the free end of the optical fiber. The path line of the end of the optical fiber moves in accordance with the speed of travel of the optical fiber. The sucking nozzle is positioned perpendicular to a plane defined by the path line of movement of the end of the optical fiber and transverse to an axis of the capstan. Thus, the sucking nozzle is positioned to reliably suck a free end of the optical fiber for a broad range of speeds of the optical fiber.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: December 5, 1995
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Katsuya Nagayama, Toshifumi Hosoya
  • Patent number: 5431002
    Abstract: A false twist crimping machine has a secondary heater positioned downstream of the false twist zone, which comprises a slightly curved, upright, externally heated tube. The upright heating tube has a downstream end which connects with a horizontally directed transport tube which extends laterally across the service aisle of the machine adjacent the floor, and to a side frame which mounts the package take-up system. The inside diameter and length of the transport tube closely correspond to the inside diameter and length of the heating tube.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: July 11, 1995
    Assignee: Barmag AG
    Inventor: Heinz Treptow
  • Patent number: 5419110
    Abstract: A method, in a spinning machine comprising a spindle portion and a nozzle portion having a first nozzle for exerting a turning air current on a fiber bundle moved out of a drafting device, comprises introducing a yarn end on the package side from the spindle portion into a second nozzle to place it in an open state, turning the yarn end around the spindle by jetting a low pressure air from the first nozzle, and supplying the drafted fiber from the nozzle portion to effect a piecing. A piecing apparatus in the spinning machine comprises device for sucking a spinning yarn wound into a package, device for reversing the package, device for guiding and cutting the sucked spinning yarn, device for transferring a spinning yarn to an outlet side of a spinning yarn of a spindle member separated from a nozzle member of a spinning section, and movable device for threading and opening on a sliver inlet side of the spindle member of the spinning yarn.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: May 30, 1995
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Kazuhiko Mikami, Susumu Banba