US3745764A - Method of and tension regulating device for tight twisting of threads - Google Patents

Method of and tension regulating device for tight twisting of threads Download PDF

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Publication number
US3745764A
US3745764A US00083972A US3745764DA US3745764A US 3745764 A US3745764 A US 3745764A US 00083972 A US00083972 A US 00083972A US 3745764D A US3745764D A US 3745764DA US 3745764 A US3745764 A US 3745764A
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Prior art keywords
threads
spindle
eye
axis
yarn package
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US00083972A
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G Petrov
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BTR Pamukotec Botevgradsko Cha
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BTR Pamukotec Botevgradsko Cha
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/003—Twisting machines in which twist is imparted from the supply packages, e.g. uptwist
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/08—Twist arresters
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • D02G3/28—Doubled, plied, or cabled threads
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • D02G3/28—Doubled, plied, or cabled threads
    • D02G3/283—Doubled, plied, or cabled threads using hollow spindles through which one yarn is running

Definitions

  • ABSTRACT A method of and a tension-regulating device for the tighttwizting of a pair of non-twisting threads unwound from a bobbin or yarn package, wherein the threads are passed without twisting through a hollow spindle, are wound one or more times around an arm of the tensionregulating device and are then passed through the eye thereof. Within the spindle, the threads are stretched and are length -'equalized, the twisting being effected by the eye and a pair of drawing rollers feeding the twisted yarn to a yarn packageor bobbin upon which it is wound.
  • the invention relates to a method of tight-twisting a straight stretch of previously nontwisted threads by means of a hollow spindle and a tension regulator or limiter.
  • the main object of the invention is to use the whole length of the hollow spindle for a preliminary equalizing of the tensile stresses in the nontwisted threads.
  • Another object of the invention is to locate the point at which the deceleration of the threads occurs, in such a manner at the outlet of the hollow spindle, that it coincides with the geometrical axis of the spindle.
  • the nontwisted threads are unwound separately from the yarn package fixed on a hollow spindle. After the passage of the nontwisted threads through the hollow spindle they are decelerated by a tension regulating limiter mounted at the discharge side of the hollow spindle and are tighttwisted by the rotary motion of the spindle. In such manner the entire twisting process is divided into two sections, zones or stretches The first section zone or stretch extends from the unwinding point of the nontwisted threads on the yarn package to the tension regulating limiter means. In this first section, zone or stretch the threads remain untwisted.
  • the second section, zone or stretch extends between the regulating limiter means and the guide means provided to guide the twisted threads toward the wind-up or takeup winding on means.
  • the tension regulating limiter fixed-at the discharge end of the hollow spindle in such manner that an aye provided thereon is aligned with the geometrical axis of the hollow spindle, transmits the rotary motion of the hollow spindle to the threads. 'Thus the threads are tighttwisted.
  • the tension regulating limiter adjusts the tension of thenontwisted threads and provides some stretching andequalizing of the structure of the nontwisted threads.
  • FIG. I shows a shematic diagram of a device embodying the invention
  • FIG. 2 is a side elevation of the tension regulating limiter shown in FIG. 1;
  • FIG. 3 is a top plan view of the tension regulating limiter.
  • the threads are then passed around the arm 12 of a tension regulating limiter 8 and reach the receiving bobbin 10 through the drawing roller pair 9.
  • the nontwisted threads are wound around the arm 12 of the tension regulating limiter 8 as many times as is required for increased tension in the section, stretch or zone of the formation of the twists.
  • the twist rate is determined by the number of revolutions of the hollow spindle 1 and by the drawing velocity of the pair of rollers 9.
  • the deceleration of the threads through the tension regulating limiter 8 avoids a back transmission of twists to the section between the tension regulating limiter 8 and the unwinding point on the bobbin 3.
  • the threads unwound off from the bobbin form separate baloon 6 before entering the inlet opening 5, and because of the smaller drag in the cavity of the spindle the threads are stretched and their lengths equalized before entering the section of the formation of twists.
  • the tension regulating limiter 8 comprises an arm 12, a spiral shaped open eye 13 and a spring sleeve 11.
  • the axis of the spiral shaped open eye 13 identified to in FIG. 3 with the numeral 15 is perpendicular to the axis 16 of the spindle.
  • the nontwisted threads are wound around the arm 12 and then pass through the eye 13. The threads thus follow the direction of the axis 16, so that no baloon is formed immediately after the regulating limiter 8.
  • a device for the twisting of a pair of threads on a yarn package comprising a hollow spindle having an axis; means for receiving said yarn package and rotating same and said spindle concurrently about said axis, said threads being unwound from said yarn package and passing through said spindle; a tension-regulating limiter mounted at an end of said spindle and having a spring sleeve surrounding said end of said spindle, an
  • a method of tight-twisting a pair of threads wound upon a yarn package without twisting comprising the steps of:

Abstract

A method of and a tension-regulating device for the tighttwizting of a pair of non-twisting threads unwound from a bobbin or yarn package, wherein the threads are passed without twisting through a hollow spindle, are wound one or more times around an arm of the tension-regulating device and are then passed through the eye thereof. Within the spindle, the threads are stretched and are length -equalized, the twisting being effected by the eye and a pair of drawing rollers feeding the twisted yarn to a yarn package or bobbin upon which it is wound.

Description

United States Patent 11 1 Petrov 14 1 Jul 17, 1973 METHOD OF AND TENSlON-REGULATING DEVICE FOR TIGHT-TWISTING OF THREADS [75] Inventor: Gueorgui Mitov Petrov, Sofia,
Bulgaria [73] Assignee: BTR Pamukotec Botevgradsko Chaussee, Sofia, Bulgaria [22] Filed: Oct. 26, 1970 211 Appl. No.: 83,972
[30] Foreign Application Priority Data Nov. 1, 1969 Bulgaria 13282 [52] US. Cl. 57/59, 57/58.86 [51] Int. Cl D0lh 7/02 [58] Field of Search 57/34 R, 58.49, 58.52,
[56] References Cited UNITED STATES PATENTS 3,369,858 3/1967 Franzen 57/58.86
2,847,817 8/1958 Gonsalves 57/62 2,843,998 7/1958 Schlums 57 59 2,946,176 7/1960 Higgins 57/62 2,238,203 4 1941 Wylde et al 57 59 FOREIGN PATENTS OR APPLICATIONS l,485,743 5/1967 France 57 59 Primary Examiner-Donald E. Watkins Attorney-Karl F. Ross [57] ABSTRACT A method of and a tension-regulating device for the tighttwizting of a pair of non-twisting threads unwound from a bobbin or yarn package, wherein the threads are passed without twisting through a hollow spindle, are wound one or more times around an arm of the tensionregulating device and are then passed through the eye thereof. Within the spindle, the threads are stretched and are length -'equalized, the twisting being effected by the eye and a pair of drawing rollers feeding the twisted yarn to a yarn packageor bobbin upon which it is wound.
4 Claims, 3 Drawing Figures Gueorgui M. Pefrov INVENTOR BY S S Q- E Attorney METHOD OF AND TENSION-REGULATING DEVICE FOR TIGHT-TWISTING OFTHREADS FIELD OF THE INVENTION The invention relates to a method of tight-twisting a straight stretch of previously nontwisted threads by means of a hollow spindle and a tension regulator or limiter.
Background of the Invention A method of and a device for the tight-twisting of twisted and wound up as yarn packages. This is a shortcoming of the prior-art method. Furthermore, the device is provided with decelerating sleeves having difierent coefficients of friction, according to the different twists and thicknesses of the yarns.
Another method and device are known in the prior art, wherein the threads are not previously twisted at all. The nontwisted threads unwound from the yarn package pass separately through yarn guides, rotatably mounted at the inlet of the hollow spindle. The threads passing through the hollow spindle are decelerated in a channel formed at the outlet of this hollow spindle. The threads receive a tight-twist and are wound up. The shortcoming of the method is that the threads must pass through guides. Furthermore a small baloon is formed by the non-twisted threads immediately beyond the point at which the deceleration occurs.
OBJECTS OF THE INVENTION The main object of the invention is to use the whole length of the hollow spindle for a preliminary equalizing of the tensile stresses in the nontwisted threads.
Another object of the invention is to locate the point at which the deceleration of the threads occurs, in such a manner at the outlet of the hollow spindle, that it coincides with the geometrical axis of the spindle.
SUMMARY OF THE INVENTION In accordance with the invention, the nontwisted threads are unwound separately from the yarn package fixed on a hollow spindle. After the passage of the nontwisted threads through the hollow spindle they are decelerated by a tension regulating limiter mounted at the discharge side of the hollow spindle and are tighttwisted by the rotary motion of the spindle. In such manner the entire twisting process is divided into two sections, zones or stretches The first section zone or stretch extends from the unwinding point of the nontwisted threads on the yarn package to the tension regulating limiter means. In this first section, zone or stretch the threads remain untwisted. Because of the free untwisted passage of the threads through the hollow spindle, the tension threads reach the regulating limiter with-equalized lengths. The second section, zone or stretch extends between the regulating limiter means and the guide means provided to guide the twisted threads toward the wind-up or takeup winding on means. In this second section ,zone or stretch the tension regulating limiter fixed-at the discharge end of the hollow spindle in such manner that an aye provided thereon is aligned with the geometrical axis of the hollow spindle, transmits the rotary motion of the hollow spindle to the threads. 'Thus the threads are tighttwisted. At the same time the tension regulating limiter adjusts the tension of thenontwisted threads and provides some stretching andequalizing of the structure of the nontwisted threads.
' DESCRIPTION OF THE DRAWING For a better understanding of the invention and to show how the same may be carried into effect, reference is now made to the accompanying drawing in which FIG. I shows a shematic diagram of a device embodying the invention FIG. 2 is a side elevation of the tension regulating limiter shown in FIG. 1; and
FIG. 3 is a top plan view of the tension regulating limiter.
SPECIFIC DESCRIPTION The threads are then passed around the arm 12 of a tension regulating limiter 8 and reach the receiving bobbin 10 through the drawing roller pair 9. The nontwisted threads are wound around the arm 12 of the tension regulating limiter 8 as many times as is required for increased tension in the section, stretch or zone of the formation of the twists. The twist rate is determined by the number of revolutions of the hollow spindle 1 and by the drawing velocity of the pair of rollers 9. The deceleration of the threads through the tension regulating limiter 8 avoids a back transmission of twists to the section between the tension regulating limiter 8 and the unwinding point on the bobbin 3. The threads unwound off from the bobbin form separate baloon 6 before entering the inlet opening 5, and because of the smaller drag in the cavity of the spindle the threads are stretched and their lengths equalized before entering the section of the formation of twists.
As shown in FIGS. 2 and 3, the tension regulating limiter 8 comprises an arm 12, a spiral shaped open eye 13 and a spring sleeve 11. The axis of the spiral shaped open eye 13 identified to in FIG. 3 with the numeral 15 is perpendicular to the axis 16 of the spindle. The nontwisted threads are wound around the arm 12 and then pass through the eye 13. The threads thus follow the direction of the axis 16, so that no baloon is formed immediately after the regulating limiter 8.
What we claim is:
l. A device for the twisting of a pair of threads on a yarn package, comprising a hollow spindle having an axis; means for receiving said yarn package and rotating same and said spindle concurrently about said axis, said threads being unwound from said yarn package and passing through said spindle; a tension-regulating limiter mounted at an end of said spindle and having a spring sleeve surrounding said end of said spindle, an
arm extending generally in the direction of said axis from said sleeve, and a generally spiral shaped eye at the end of said arm, said threads passing over said arm and through said eye upon emerging from said spindle; and means spaced from said eye for receiving the threads twisted between said eye and the last men tioned means.
2. The device defined in claim 1 wherein said eye has an axis intersectiing the axis of said spindle.
3. The device defined in claim 2 wherein said axis of said eye is perpendicular to the axis of said spindle.
4. A method of tight-twisting a pair of threads wound upon a yarn package without twisting, said method comprising the steps of:
a. unwinding said threads jointly from said yarn package and passing them through a hollow spindle said threads between said eye and said location.
i I i fi

Claims (4)

1. A device for the twisting of a pair of threads on a yarn package, comprising a hollow spindle having an axis; means for receiving said yarn package and rotating same and said spindle concurrently about said axis, said threads being unwound from said yarn package and passing through said spindle; a tensionregulating limiter mounted at an end of said spindle and having a spring sleeve surrounding said end of said spindle, an arm extending generally in the direction of said axis from said sleeve, and a generally spiral shaped eye at the end of said arm, said threads passing over said arm and through said eye upon emerging from said spindle; and means spaced from said eye for receiving the threads twisted between said eye and the last mentioned means.
2. The device defineD in claim 1 wherein said eye has an axis intersectiing the axis of said spindle.
3. The device defined in claim 2 wherein said axis of said eye is perpendicular to the axis of said spindle.
4. A method of tight-twisting a pair of threads wound upon a yarn package without twisting, said method comprising the steps of: a. unwinding said threads jointly from said yarn package and passing them through a hollow spindle without imparting a twist to said threads therein while stretching and length-equalizing said threads within said hollow spindle; b. frictionally engaging said threads by passing them jointly over an arm of a tension-regulating limiter and through an eye thereof upon emergence of said threads from said hollow spindle; c. gripping said threads at a location spaced from said eye and drawing said threads through said hollow spindle, along said arm and through said eye from said location; and d. rotating said yarn package, said hollow spindle and said tension-regulating limiter to impart a twist to said threads between said eye and said location.
US00083972A 1969-11-01 1970-10-26 Method of and tension regulating device for tight twisting of threads Expired - Lifetime US3745764A (en)

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JP (1) JPS4833781B1 (en)
BE (1) BE758235A (en)
CH (1) CH519034A (en)
DE (1) DE2053385C3 (en)
FR (1) FR2066935B1 (en)
GB (1) GB1313358A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869850A (en) * 1973-01-18 1975-03-11 Alexander Gross Chenille production machines
DE2439732A1 (en) * 1973-08-27 1975-07-03 Dso Textil METHOD AND DEVICE FOR THE PRODUCTION OF MOLDED EFFECT YARN WITH AND WITHOUT LOOSES
US3969880A (en) * 1974-03-01 1976-07-20 Maillefer S.A. Machine for manufacturing cables by stranding individual wires

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2462400C2 (en) * 1974-06-12 1982-05-13 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Method for producing a wrapped yarn
DE3050883C2 (en) * 1980-03-12 1988-09-29 Saurer-Allma Gmbh, 8960 Kempten, De
DE3009348C2 (en) * 1980-03-12 1985-03-21 Saurer-Allma Gmbh, 8960 Kempten Apparatus for producing a yarn

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Publication number Priority date Publication date Assignee Title
BE526169A (en) *
DE633190C (en) * 1936-07-22 Carl Hamel Akt Ges Twisting spindle
FR579532A (en) * 1923-06-25 1924-10-18 Manufacturing processes and means of obtaining gimpies and fancy threads on milling looms
FR652198A (en) * 1928-04-04 1929-03-05 Improvements in difficult trades
DE601637C (en) * 1932-06-16 1934-08-21 Dresdner Strickmaschinenfabrik Twisting device
FR837923A (en) * 1937-11-03 1939-02-23 Leon Briand Et Ses Fils Special use of grinding spindles
FR995064A (en) * 1949-07-19 1951-11-27 Moulinage De Salaise Method for high speed milling of parallel strand yarns
GB1097002A (en) * 1963-05-21 1967-12-29 Parkland Mfg Company Ltd Textile yarn twisting apparatus
FR1433447A (en) * 1965-02-15 1966-04-01 Improvements to twist or twist mills
GB1204204A (en) * 1967-10-20 1970-09-03 Beckman Instruments Inc Method and apparatus for in vivo concentration measurements
FR1551306A (en) * 1967-12-21 1968-12-27

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869850A (en) * 1973-01-18 1975-03-11 Alexander Gross Chenille production machines
DE2439732A1 (en) * 1973-08-27 1975-07-03 Dso Textil METHOD AND DEVICE FOR THE PRODUCTION OF MOLDED EFFECT YARN WITH AND WITHOUT LOOSES
US3969880A (en) * 1974-03-01 1976-07-20 Maillefer S.A. Machine for manufacturing cables by stranding individual wires

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DE2053385A1 (en) 1971-05-13
CH519034A (en) 1972-02-15
FR2066935B1 (en) 1973-11-23
GB1313358A (en) 1973-04-11
JPS4833781B1 (en) 1973-10-16
DE2053385C3 (en) 1986-07-10
FR2066935A1 (en) 1971-08-13
BE758235A (en) 1971-04-01
DE2053385B2 (en) 1980-05-22

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