US3481128A - Apparatus for varying spinning characteristics of a rotary chamber spinning machine - Google Patents

Apparatus for varying spinning characteristics of a rotary chamber spinning machine Download PDF

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Publication number
US3481128A
US3481128A US661120A US3481128DA US3481128A US 3481128 A US3481128 A US 3481128A US 661120 A US661120 A US 661120A US 3481128D A US3481128D A US 3481128DA US 3481128 A US3481128 A US 3481128A
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United States
Prior art keywords
tube
spinning
yarn
chamber
withdrawal
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Expired - Lifetime
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US661120A
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English (en)
Inventor
Hans Landwehrkamp
Franz Schreyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rieter Ingolstadt Spinnereimaschinenbau AG
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Schubert und Salzer Maschinenfabrik AG
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/40—Removing running yarn from the yarn forming region, e.g. using tubes

Definitions

  • the mouth of a withdrawal tube extends concentrically downward or upward into a spinning chamber rotating about an upright axis and can be selectively shifted lengthwise to locate its end higher or lower than the chambers fiber-gathering channel.
  • the character of the finished yarn can be further varied by providing two or more telescoping withdrawal tubes having different characteristics, any one of which tubes can be shifted lengthwise into a yarntwisting position.
  • the yarn-engaging ends of the several tubes may be beaded, ribbed, notched, grooved, smooth, roughened, flared or cylindrical to provide selected yarn surface characteristics.
  • the spinning chamber may have a yam-engaging annular bead adjacent to the withdrawal tube.
  • Spinning apparatus such as disclosed in copending United States patent application Ser. No. 655,906 of Landwehrkamp and Schreyer filed July 25, 19-67, includes a funnel-shaped rotating spinning chamber having its upper margin tapered inwardly to define a fiber-collection channel.
  • the spun yarn is withdrawn from the chamber through a tube extending through a chamber wall concentric with the chambers axis of rotation so that the tube has an inner end and an outer end.
  • the surface configuration of the withdrawal tube inner end portion, the pressure of the yarn against the tube inner end and the angle formed by the yarn between the chamber collection channel andthe tube end combine to determine the amount of friction between the yarn and the tube end.
  • the pressure of the yarn against the tube is determined by the speed of rotation of the chamber. All of these factors influence the spinning characteristics of the apparatus and the appearance and quality of the yarn produced. It has been found, for example, that a large amount of friction increases the transmission of twist but the quality of the yarn is reduced because of fiber abrasion and a rough yarn is produced. On the other hand, a smooth yarn is produced if the fiber being spun can roll on the floor of the chamber below the collection channel before it is withdrawn through the tube.
  • Another important object is to provide a yarn-Withdrawal tube which can be shifted to extend into the chamber a greater or lesser amount to change the surface characteristics of the finished yarn.
  • a companion object is to vary the yarn surface characteristics by providing a spinning chamber having an annular ridge engageable with the spinning fiber between the collection channel and the withdrawal tube.
  • FIGURES 1, 2 and 3 are axial sections through spinning apparatus according to the present invention showing the withdrawal tube in different adjusted positions, parts being omitted in FIGURE 2.
  • FIGURE 4 is an axial section showing a modified spinning chamber and FIGURE 5 is a similar view of a different type of spinning chamber.
  • FIGURE 6 is an axial section through a spinning chamber having a different type of withdrawal apparatus and FIGURE 7 is a fragmentary section through such apparatus with parts in a different adjusted relationship.
  • FIGURE 8 is an axial section through a spinning apparatus showing still a diflerent type of withdrawal apparatus.
  • FIGURE 9 is a plan of a withdrawal tube inner end with the spinning chamber in section and FIGURE 10 is a plan of a modified withdrawal tube inner end.
  • FIGURE 1 A representative spinning device is shown in FIGURE 1.
  • a housing 1 surrounds a spinning chamber 2 mounted on the upper end of a hollow upright shaft 21. From the upper end of the shaft the cup-shaped chamber flares upwardly and outwardly and has an inwardly and upwardly inclined rim.
  • a cover 11 closes the upper portion of housing 1 and its central portion depends into and forms a stationary'cover for the spinning chamber.
  • a feed tube 51 extends through cover 11 to supply fiber sliver from feed rolls 5 to the spinning chamber 2 and directs such sliver into the collection channel 24 defined by the junction of the lower flared wall and inturned rim of the chamber.
  • a tube 6 extends axially through cover 11 for removing spun yarn from chamber 2.
  • An exhaust tube 4 communicates with the hollow shaft 21 to remove lint and residue from the spinning chamber.
  • the shaft is driven by a sheave 22 turned by belt 23.
  • the withdrawal tube 6 can be moved longitudinally by a Bowden wire or by an arm 61 projecting from the outer portion of the tube, for example, into various selected positions relative to the collection channel 24.
  • the positions of the inner end or mouth 60 of the withdrawal tube 6 relative to the collector channel 24 will be designated as positive or negative.
  • the tube is in the positive position when the entire tube is at one side of channel 24 and the yarn F forms an obtuse angle a between the thread-binding point B in the collection channel and drawing rolls 3, as indicated in FIGURE 5.
  • the tube is in the negative position when its inner ends is on one side of channel 24 and its outer end is on the opposite side of such channel and the yarn stretches at opposite sides of the yarn contact with the inner end 60 of tube 6 forms an acute angle a, as indicated in FIGURE 3.
  • mouth 60 of withdrawal tube 6 is moved by a link or Bowden wire attached to arm 61 into the positive position of FIGURE 1.
  • the free end E of a starting thread can be thrown into collection channel 24 by centrifugal force of the spinning chamber 2. If the tube is in the negative position during the starting operation, the starting thread extending into the chamber through tube 6 from drawing rolls 3 must bend sharply upward to reach the collection channel which makes the start diflicult, if not impossible.
  • the position of the tube 6 can be altered.
  • the yarn has a smooth surface when it is rolled along floor 20 of the spinning chamber by locating the tube end in a negative position.
  • the withdrawal tube 6 is in a positive position, so that the yarn forms an obtuse angle a, the drawing r lls 3 can be operated at greater speed than when the tube is in a negative position. Consequently, in order to reduce the negative extent of tube 6 while maintaining the desired yarn characteristics, the spinning chamber can be constructed in various ways, such as shown in FIGURES 4 and 5, the feed tube and cover, not shown, cooperating with the spinning chamber in a manner essentially as the feed tube 51 and cover 11 of FIGURES 1 and 3 cooperate with spinning chamber 2.
  • the spinning chamber 200 has a shallow floor 201 and an annular bead elevated above the floor on which the portion of the yarn between channel 24 and tube 6 can roll. In this instance, therefore, the withdrawal tube can be in positive position or in a less negative position than might otherwise be necessary.
  • annular bead 205 projects downwardly into chamber 203 from the upper chamber wall 204.
  • tube 6 could be stationary, but it is preferred that the tube be movable to vary the relative positive position to adapt each chamber to different types of fiber, for example, and to alter the type of yarn surface when desired.
  • the twist For high withdrawal speed, the twist must be produced as close as possible to the fiber binding point B in the collection channel. Great fricti n at month 60 of tube 6, in general, facilitates formation of false twist and, thus, the binding of the yarn. However, such friction causes the yarn surface to become rough.
  • the yarn characteristics were determined by the construction of the spinning chamber and the withdrawal tube and c uld be changed only by shutting down the spinning machine and exchanging withdrawal tubes.
  • the present invention makes it possible to vary the characteristics of the yarn readily and automatically. As described above, this can be done by displacing the withdrawal tube axially between various positive and negative positions to influence the transmission of twist to the yarn and the creation of false twist.
  • FIGURE 6 shows a spinning chamber 2 in which two withdrawal tubes 600 and 610 are nested in the hollow shaft 21. Each tube 600 and 610 can be moved axially toward and away from collection channel 24. Again, a feed tube and cover, such as elements 51 and 11 shown in FIGURES l and 3, w uld be provided to cooperate with such spinning chamber.
  • the inner tube 610 If the inner tube 610 is raised so that its month 611 is even with or higher than the mouth of tube 600, only tube 610 will engage yarn F. If the inner tube 610 is lowered a substantial distance below the mouth of outer tube 600, as shown in FIGURE 7, the inner tube will have no effect because the yarn will merely be pulled axially through it by the drawing rollers. If the two tubes 600 and 610 are disposed so that month 611 of inner tube 610 is only slightly below mouth 601 of tube 600, as shown in FIG- URE 6, the yarn will be engaged by and its characteristics influenced by both tube ends.
  • More than two tubes may be provided in nested, telescoping arrangement as shown in FIGURE 8, and the inner end portions or months of such tubes may have different configurations to achieve different effects in the finished yarn.
  • the feed tube and cover such as shown in FIGURES l and 3, have been omitted in this figure also for clarity.
  • an outer withdrawal tube 620 has an upwardly flaring mouth terminating in an annular bead 605. If this tube is rotated at the same speed as shaft 21, the roughness of yarn F will be affected in the same manner as by the bead in the specially formed chambers shown in FIGURES 4 and 5.
  • An annular groove 621 is provided in the outer wall of tube 620 near its lower end so that the tube can rotate relative to arm 650 and rod 65 which effect axial displacement of this tube.
  • An intermediate withdrawal tube 600 having a flanged mouth 601 is movable axially relative to shaft 21 and tube 620 by arm '66.
  • This tube may also be rotatably mounted if desired.
  • the inner withdrawal tube 610 has a flared month 611 and is supported by needle bearings within, and is rotatable relative to, tube 600.
  • Tube 610 is rotated by belt 681 through sheave 680 and is axially displaceable by arm 67.
  • Sheave 680 is considerably wider than belt 681 so that the tube and sheave can move axially relative to such belt. If the inner tube 610 is lowered sutficiently its mouth 611 will not engage the yarn F.
  • rim of month 601 on tube 600 might be broadened to form a fiat flange and the rims of months 605' and 601 on tubes 620 and 600, respectively, may be rounded to a greater or lesser extent or may be angular.
  • Various relative adjusted positions of the tubes can be selected to change the radius of the yarn in the combined mouth region of the combined withdrawal tube assembly.
  • the tube inner ends could be sandblasted or otherwise roughened, or a ring of rubber or similar material having a high coefficient of friction can be bonded to the end of a tube. It may be desirable to have different friction surfaces on the ends of the several tubes in the telescoping assembly.
  • notches or grooves may be provided in the rim of mouth 611 of tube 610, while mouth 601 of tube 600 may be highly polished to provide a very smooth surface. If desired, the mouth 601 of intermediate tube 600, instead of the mouth 611 of tube 610, may have the surface producing the greater friction.
  • the tube end 60 may be provided with additional intersecting notches 64 extending in the opposite tangential direction, as shown in FIGURE 10, so that the same tube may be used for either rotational direction of the spinning chamber.
  • Conventional spinning machines could be easily modified to eliminate at least one type of tube exchange simply by forming a notch system such as shown in FIGURE in the stationary tube end.
  • FIGURES 1 through 5 Although only a single displaceable tube is shown in FIGURES 1 through 5, it is obvious that a telescoping arrangement could be provided in spinning chambers in which the yarn is withdrawn through the chamber cover. Similarly, a single axially displaceable tube could be used in machines in which the yarn is withdrawn through the hollow shaft of the chamber.
  • the withdrawal tube arrangements of the present invention are not limited to use in spinning chambers of the type shown in the drawings, but can be used with the same results in other types of spinning apparatus.
  • the basic advantage of the present invention is that through the use of axially displaceable yarn withdrawal tubes spinning conditions can be changed to the immediate requirement without interruption of the spinning process. Consequently, the transition from start to normal spinning run, adaptation to different fiber materials and the termination of the spinning operation can be accomplished easily and smoothly.
  • a rotatable withdrawal tube By providing a rotatable withdrawal tube, the maximum discharge speed can be obtained. It will readily be seen that provision of an infinitely variable withdrawal assembly which is adaptable to the momentary spinning requirements is particularly suitable for centralized control of the spinning machine, such as through linkage or Bowden wire actuation of the withdrawal tubes.
  • Open end spinning apparatus comprising a spinning chamber rotary about an axis and having a narrow annular inwardly-opening centrifugal fiber-collection channel, and thread-withdrawal tube means having an inner end portion extending into the interior of said spinning chamber, said tube means and said spinning chamber being relatively displaceable lengthwise of said tube means to alter selectively the position of said tube means inner end portion axially of said fiber-collection channel.
  • thread-withdrawal tube means include a plurality of nested tubes mounted for telescoping axial relative movement.
  • each of the nested tubes has an inner end portion defining a mouth, the mouth of at least one of the tubes having a different configuration than the mouths of others of the tubes.
  • the nested tubes are substantially cylindrical and at least one of the tubes has two sets of grooves in its inner end, the lengths of the grooves of each set extending tangentially of the tubes inner wall and corresponding grooves of the two sets extending oppositely from various points of tangency to such tubes inner wall.
  • the thread-withdrawal tube means includes a cylindrical tube having grooves in its inner end arranged with their lengths inclined relative to radii of'said tube respectively intersecting such grooves.
  • the thread-withdrawal tube means includes a cylindrical tube having grooves in its inner end arranged with their lengths extending tangentially of the tubes wall.
  • the thread-withdrawal tube means includes a cylindrical tube having two sets of grooves in its inner end, the lengths of the grooves of each set extending tangentially of the tubes inner wall and corresponding grooves of the two sets extending oppositely from various points of tangency to such tubes inner wall.
  • Open end spinning apparatus comprising a spinning chamber and cylindrical tube means including a thread-withdrawal tube having an inner end portion extending into the interior of said spinning chamber having grooves in its inner end arranged with their lengths inclined relative to radii of said tube respectively intersecting such grooves.
  • the inner end portion of the thread-withdrawal tube has two sets of grooves, the lengths of the grooves of each set extending tangentially of the tubes inner wall and corresponding grooves of the two sets extending oppositely from various points of tangency to such tubes inner wall.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US661120A 1966-08-24 1967-08-16 Apparatus for varying spinning characteristics of a rotary chamber spinning machine Expired - Lifetime US3481128A (en)

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US (1) US3481128A (de)
BE (1) BE703038A (de)
CH (1) CH455596A (de)
CS (1) CS167870B2 (de)
DE (1) DE1560302C3 (de)
ES (1) ES343052A1 (de)
GB (1) GB1150119A (de)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640061A (en) * 1968-10-30 1972-02-08 Schubert & Salzer Maschinen Method and apparatus for spinning a fiber band
US3651632A (en) * 1969-04-09 1972-03-28 Tmm Research Ltd Open-end spinning devices
US3785138A (en) * 1971-03-26 1974-01-15 Elitex Zavody Textilniho Spinning unit for open end spinning machine
US3805505A (en) * 1971-08-11 1974-04-23 Schubert & Salzer Maschinen Thread drawoff tube construction for open end spinning machines
US3812667A (en) * 1971-03-05 1974-05-28 Vyzk Ustav Bavlnarsky Ringless spinning of separated staple fibres
US3844100A (en) * 1971-10-19 1974-10-29 Platt International Ltd Apparatus for the open-end spinning of textile yarns
US3903683A (en) * 1972-08-11 1975-09-09 Masakazu Shino Method for spinning staples by means of the open-end system
US3965661A (en) * 1973-04-21 1976-06-29 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Thread drawoff tube for an open-end spinning unit
US3972172A (en) * 1974-03-14 1976-08-03 Skf Compagnie D'applications Mecaniques Spinning rotor construction
US3973382A (en) * 1974-02-12 1976-08-10 Hironori Hirai Yarn guide device for an open-end spinning machine
US3986332A (en) * 1975-05-21 1976-10-19 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Thread-draw-off guide attached to a spinning rotor of an open-end spinning unit
US4044537A (en) * 1974-11-29 1977-08-30 Kabushiki Kaisha Negishi Kobyo Kenkyusho Spinning method and apparatus therefor
US4058964A (en) * 1975-04-11 1977-11-22 Rieter Machine Works, Ltd. Open-end rotor for a spinning machine
US4068456A (en) * 1975-10-04 1978-01-17 Schubert & Salzer Open-end spinning device
US4073126A (en) * 1975-10-03 1978-02-14 Societe Anonyme Des Ateliers Houget Duesberg Bosson Open-end spinning device
US4166354A (en) * 1976-10-14 1979-09-04 Societe Alsacienne De Constructions Mecaniques De Mulhouse Freed-fiber spinning devices
US4565064A (en) * 1983-08-19 1986-01-21 Howa Kogyo Kabushiki Kaisha Process and apparatus for preparing fasciated spun yarns
US4635436A (en) * 1985-04-29 1987-01-13 Rieter Machine Works Limited Spinning device for open-end spinning containing easily replaceable nozzle body
US5163205A (en) * 1991-08-29 1992-11-17 Niederer Kurt W Belted rotary drafting device for staple fibers and method
WO1994004730A1 (en) * 1992-08-20 1994-03-03 Burckhardt America Inc. Open end spinning device
US5406783A (en) * 1992-08-27 1995-04-18 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Rotor type open-end spinning frame with yarn piecing structure and method therefor
US5540044A (en) * 1994-03-31 1996-07-30 W. Schlafhorst Ag & Co. Open-end rotor spinning apparatus
CN100489167C (zh) * 2003-07-11 2009-05-20 W.施拉夫霍斯特公司 纱阻捻头

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH457218A (de) 1966-10-11 1968-05-31 Vyzk Ustav Bavlnarsky Verfahren und Vorrichtung zum kontinuierlichen ringlosen Feinspinnen von Garn in einer rotierenden Spinnkammer
DE1901453C3 (de) * 1969-01-13 1982-12-02 Wilhelm Stahlecker Gmbh, 7341 Reichenbach Lagerung einer Spinnturbine einer Offen-End-Spinnmaschine
DE2909253A1 (de) * 1979-03-09 1980-09-11 Fritz Stahlecker Verfahren und vorrichtung zum vorbereiten eines anspinnvorgangs an einem offenend-spinnaggregat
DE3934166C2 (de) * 1989-10-12 1994-06-09 Rieter Ingolstadt Spinnerei Offenend-Spinnvorrichtung
CZ280689B6 (cs) * 1993-08-11 1996-04-17 Rieter Elitex A.S. Způsob výroby příze ve spřádacím rotoru a zařízení k provádění tohoto způsobu
DE10228504A1 (de) * 2002-06-20 2004-01-08 Wilhelm Stahlecker Gmbh Garnabzugsdüse für Offenend-Spinnvorrichtungen

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052731A (en) * 1935-07-09 1936-09-01 Du Pont Rayon Co Apparatus for production of artificial thread
US2100595A (en) * 1935-10-31 1937-11-30 American Enka Corp Manufacture of artificial silk
US2940243A (en) * 1958-09-02 1960-06-14 American Enka Corp Spinning funnel
US3096610A (en) * 1961-09-18 1963-07-09 Western Electric Co Methods of and apparatus for multicycle twisting a wire-like member
US3098343A (en) * 1961-05-30 1963-07-23 Negishi Eizaburo Yarn end controlling device for a centrifugal spinning machine
US3126697A (en) * 1964-03-31 Apparatus for continuous spinning of fibrous textile materials
US3163976A (en) * 1962-05-25 1965-01-05 Alsacienne Constr Meca Spinning device
US3328949A (en) * 1964-11-25 1967-07-04 Elitex Zavody Textilniho Device for continuous centrifugal spinning
US3368339A (en) * 1966-01-27 1968-02-13 Negishi Kogyo Kenkyusho Urawa Rotating spinning tube

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126697A (en) * 1964-03-31 Apparatus for continuous spinning of fibrous textile materials
US2052731A (en) * 1935-07-09 1936-09-01 Du Pont Rayon Co Apparatus for production of artificial thread
US2100595A (en) * 1935-10-31 1937-11-30 American Enka Corp Manufacture of artificial silk
US2940243A (en) * 1958-09-02 1960-06-14 American Enka Corp Spinning funnel
US3098343A (en) * 1961-05-30 1963-07-23 Negishi Eizaburo Yarn end controlling device for a centrifugal spinning machine
US3096610A (en) * 1961-09-18 1963-07-09 Western Electric Co Methods of and apparatus for multicycle twisting a wire-like member
US3163976A (en) * 1962-05-25 1965-01-05 Alsacienne Constr Meca Spinning device
US3328949A (en) * 1964-11-25 1967-07-04 Elitex Zavody Textilniho Device for continuous centrifugal spinning
US3368339A (en) * 1966-01-27 1968-02-13 Negishi Kogyo Kenkyusho Urawa Rotating spinning tube

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640061A (en) * 1968-10-30 1972-02-08 Schubert & Salzer Maschinen Method and apparatus for spinning a fiber band
US3651632A (en) * 1969-04-09 1972-03-28 Tmm Research Ltd Open-end spinning devices
US3812667A (en) * 1971-03-05 1974-05-28 Vyzk Ustav Bavlnarsky Ringless spinning of separated staple fibres
US3785138A (en) * 1971-03-26 1974-01-15 Elitex Zavody Textilniho Spinning unit for open end spinning machine
US3805505A (en) * 1971-08-11 1974-04-23 Schubert & Salzer Maschinen Thread drawoff tube construction for open end spinning machines
US3844100A (en) * 1971-10-19 1974-10-29 Platt International Ltd Apparatus for the open-end spinning of textile yarns
US3903683A (en) * 1972-08-11 1975-09-09 Masakazu Shino Method for spinning staples by means of the open-end system
US3965661A (en) * 1973-04-21 1976-06-29 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Thread drawoff tube for an open-end spinning unit
US3973382A (en) * 1974-02-12 1976-08-10 Hironori Hirai Yarn guide device for an open-end spinning machine
US3972172A (en) * 1974-03-14 1976-08-03 Skf Compagnie D'applications Mecaniques Spinning rotor construction
US4044537A (en) * 1974-11-29 1977-08-30 Kabushiki Kaisha Negishi Kobyo Kenkyusho Spinning method and apparatus therefor
US4058964A (en) * 1975-04-11 1977-11-22 Rieter Machine Works, Ltd. Open-end rotor for a spinning machine
US3986332A (en) * 1975-05-21 1976-10-19 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Thread-draw-off guide attached to a spinning rotor of an open-end spinning unit
US4073126A (en) * 1975-10-03 1978-02-14 Societe Anonyme Des Ateliers Houget Duesberg Bosson Open-end spinning device
US4068456A (en) * 1975-10-04 1978-01-17 Schubert & Salzer Open-end spinning device
US4166354A (en) * 1976-10-14 1979-09-04 Societe Alsacienne De Constructions Mecaniques De Mulhouse Freed-fiber spinning devices
US4565064A (en) * 1983-08-19 1986-01-21 Howa Kogyo Kabushiki Kaisha Process and apparatus for preparing fasciated spun yarns
US4635436A (en) * 1985-04-29 1987-01-13 Rieter Machine Works Limited Spinning device for open-end spinning containing easily replaceable nozzle body
US5163205A (en) * 1991-08-29 1992-11-17 Niederer Kurt W Belted rotary drafting device for staple fibers and method
WO1994004730A1 (en) * 1992-08-20 1994-03-03 Burckhardt America Inc. Open end spinning device
US5437147A (en) * 1992-08-20 1995-08-01 Burckhardt America, Inc. Open end spinning device
US5475974A (en) * 1992-08-20 1995-12-19 Burckhardt America, Inc. Open end spinning device
US5406783A (en) * 1992-08-27 1995-04-18 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Rotor type open-end spinning frame with yarn piecing structure and method therefor
US5540044A (en) * 1994-03-31 1996-07-30 W. Schlafhorst Ag & Co. Open-end rotor spinning apparatus
CN100489167C (zh) * 2003-07-11 2009-05-20 W.施拉夫霍斯特公司 纱阻捻头

Also Published As

Publication number Publication date
DE1560302C3 (de) 1981-11-26
GB1150119A (en) 1969-04-30
DE1560302A1 (de) 1971-04-01
DE1560302B2 (de) 1973-11-29
CH455596A (de) 1968-07-15
BE703038A (de) 1968-01-15
ES343052A1 (es) 1968-08-16
CS167870B2 (de) 1976-05-28

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