US2089193A - Textile yarn and fabric and the production thereof - Google Patents

Textile yarn and fabric and the production thereof Download PDF

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US2089193A
US2089193A US53033A US5303335A US2089193A US 2089193 A US2089193 A US 2089193A US 53033 A US53033 A US 53033A US 5303335 A US5303335 A US 5303335A US 2089193 A US2089193 A US 2089193A
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yarn
twist
twisting
production
portions
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Dreyfus Henry
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Henry Dreyfuss Associates LLC
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Henry Dreyfuss Associates LLC
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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
    • D01H13/30—Moistening, sizing, oiling, waxing, colouring, or drying yarns or the like as incidental measures during spinning or twisting
    • 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
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam

Definitions

  • This invention relates to the production of textile materials, and particularly to the production of crepe yarns and fabrics, and has for its object the production of such materials giving enhanced crpe efiects.
  • twist is imparted to a crepe yarn to a degree that varies along the 'length of the yarn, and during the insertion of the twist steps are taken to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist.
  • the length of the yarn into which the twist is being inserted may terminate in a roll or pair of rolls round or between which the yarn passes so that by the engagement of the yarn with the roli or rolls running of the twist along the yarn is restrained.
  • the variation in the degree of twisting in the different portions of'the yarn is conveniently efiected by correspondingly varying the rate of travel of the yarn, in which case the rate of operation of the twisting device itself may be kept constant.
  • the roll or rolls serving to prevent the running of the twist may be used to control the rate of travel of the yarn.
  • Any suitable means may be provided to efi'ect the variation in the peripheral speed of the roll or rolls, several suitable devices for this purpose being described in U. S. application S. No. 538,486 filed 19th May 1931.
  • the roll 'or rolls may thus serve to draw the yarnat a non-unigo form rate from a bobbin on a twisting spindle and deliver the yarn after it has received a corre sponding non-uniform twist to a, take-up bobbin.
  • the take-up bobbin may also 'be driven at a similarly varying rate of speed, or it may be constantly driven, a compensator being provided if desired to allow for the varying rate of delivery of the yarn to the take-up bobbin.
  • the unevenness of the twist results in a corresponding unevenness of c rping power in the iii) yarn and an enhancement of the crpe efifect obtained by the use of the yarn.
  • the strength of the effect may be varied by varying the lengths of the yarn containing the difierent degrees of;
  • the alternation of the higher and lower 55 twists may be regular or irregular, asdesired,
  • a further feature of the invention comprises setting the twist as soon as possible after its insertion so as to fix the different degrees of twist in the respective portions of the yarn.
  • One method of setting the twist isto apply size to the 5 yarn, for example immediately after the yarn has passed the roll or rolls described above, or the size may actually be appliedby the roll or one of the rolls as the yarn is engaged thereby.
  • crepe yarns of textile materials in general, e. g. natural silk, cotton and wool, or cellulose acetate or other cellulose derivatives and viscose or other cellulosic artificial yarns. 5
  • a further method of setting the twist comprises the subjection of the yarn to the action of moist steam or hot water, for which purpose the methods described in U. S. applications S. Nos. 746,134 filed 29th September 1934, 746,135 filed 29th September 1934, 25,054 filed 5th June 1935 and 4,085 filed 30th January 1935 may be employed.
  • Fig. 1 illustrates somewhat diagrammatically an end elevation of apparatus for imparting to yarn a varying degree of twist and sizing and 30 drying'the yarn so twisted; and Fig' 2 is a similar view of apparatus for imparting to yarn. a. varying degree of twist andsteaming the yarn so twisted.
  • the drum 9 rotates with a peripheral speed substantially equal to that of the nip rolls l. or maybe somewhat lower, the rolls and the drum being driven in synchronism and at a varying rate by chains which engage sprockets ll fixed to the nip rolls and drum.
  • the chains it are driven by sprockets l2 fixed to a shaft t3, the 5 shaft 93 being driven in turn at the desired rate by elliptical gearing it.
  • the twisting bobbin 5 rotates at a constant rate, and by reason of the varying rate of drawofi of the yarn 5 a varying degree of twist is inserted in the yarn, i. e. relatively high twist is inserted when the nip rolls 5 and drum 9 rotate slowly, and relatively low twist is inserted in the yarn when the rolls and drum rotate quickly.
  • the nip rolls ll reduce the tendency of the high twist from a portion of the yarn above the rolls to run back along the yarn to the portion of the yarn undergoing twisting; likewise a portion of yarn having just received a lower degree of twist and having passed the rolls, is maintained in such low-twisted condition and is substantially unaffected by higher twist in the yarn below the nip rolls.
  • the yarn 5 may also be sized immediately after twisting so as to fix the different degrees of twist in the respective portions of the yarn, by a sizing device situated immediately above the nip rolls 1.
  • the sizing device comprises a tubular container l5 having an open top and a reentrant base, the base being formed as an annular cup 16 and being pierced at H for passage of the yarn.
  • the cup I6 is supplied with size from a container l8 through a pipe 19, the fiow of size along the pipe being controlled by a tap 20 which is adjusted to maintain the level of the size in the cup slightly higher than the level of the aperture ll.
  • the yarn takes up the excess size which otherwise would escape from the cup, the size being dried on the yarn by a steam dryer 2
  • the dryer is supplied with steam at high temperature from a conduit 22, the exhaust steam escaping along a second conduit 23.
  • the sized yarn is traversed to and fro along the package 8 by a guide 24 reciprocated by cam or like means (not shown).
  • the chamber 25 may be similar to the steam chamber described in British application No. 35191/34 filed 7th December 1934. As in Figure 1, the nip rolls 1 and drum 9 are driven intermittently from elliptical gearing Id.
  • the yarn 5 is preferably moistened prior to passing into the chamber 25 by contacting with a roller 21 which dips into a water'trough 2B.
  • the roller 21 may be grooved or felt-covered, and may rotate freely under the influence of the travelling yarn,
  • the frequency of the highly-twisted and lesser twisted portions of the yarn may be varied by driving the elliptical gearing 14 faster or slower, as desired.
  • the elliptical gears may also be changed for gears of difierent ratios.
  • the chain sprockets II are similarly changeable, and if desired, the nip rolls I and drum 9 may be changed for rolls and a drum of larger or smaller diameter.
  • variable drive mechanisms of the types described in U. S. application S. No. 538,486 filed 19th May 1931 can be employed, the different rates of progress of the yarn from the twisting bobbin enabling the crping qualities of a yarn to be varied.
  • the rate of rotation of the twisting bobbin can be varied, the variations in the rate of take-up of the yarn and which comprises irregularly twisting the yarn and concomitantly with such irregular twisting, fixing the twist in the yarn.
  • Process for the production of crepe yarn of cellulose acetate or other organic derivative of cellulose comprising twisting the yarn to a degree that varies along the length of the yarn, and concomitantly with such twisting sizing and drying the yarn so as to fix the different degrees of twist in the respective portions of the yarn.
  • Process for the production of crepe yarn comprising drawing the yarn at an irregular rate over the end of a rotating supply package so as to twist the yarn to a degree that varies along the length of the yarn, winding the yarn so drawn, and concomitantly with such winding nipping the yarn progressively along its length so as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and sizing and drying the yarn so as to fix the different degrees of twist in the respective portions of the yarn.
  • Process for the production of crepe yarn of cellulose acetate or other organic derivative of cellulose comprising twisting the yarn to a degree that varies along the length of the yarn, and concomitantly with such twisting, nipping the yarn progressively along its lengthrso as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and applying steam to at least part of the yarn actually receiving twist, under conditions such that moisture is present, so as to fix the different degrees of twist in the respective portions of the yarn.
  • cellulose which comprises drawing the yarn at an irregular rate over the end of a rotating supply package so as to twist the yarn to a degree that varies along the length of the yarn, and concomitantly with such twisting, nipping the yarn progressively along'its length so as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and applying steam to at least part of the yarn actually receiving twist, under conditions such that moisture is present so as to fix the different degrees of twist in the respective portions of the yarn.
  • Apparatus for the production of crepe yarn comprising means for twisting the yarn, means for winding the twisted yarn, means for driving said winding means at a varying rate so as to vary the degree of twist in the yarn, and means disposed between said twisting means and said winding means for fixing the twist in the yarn.
  • Apparatus for the production of crepe yarn comprising means for twisting the yarn, means for winding the twisted yarn, means for driving said winding means at a varying rate so as to vary the degree of twist in the yarn, nip rolls disposed so as to engage the yarn between said twisting means and said winding means and adapted to nip the yarn progressively along its length so as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and means disposed between said nip rolls and said winding means for fixing the different degrees of twist in the respective portions of the yarn.
  • means for twisting the yarn means for winding the twisted yarn, means for driving said winding means at a varying rate so as to vary the degree of twist in the yarn, nip rolls disposed so as to engage the yarn' between said twisting.
  • means and said winding means and adapted to nip the yarn progressively along its length so as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and means for sizing and drying the yarn between said nip rolls and said winding means.
  • Apparatus for the production of crepe yarn comprising means for twisting the yarn, means for winding the twisted yarn, means for driving said winding means at a varying rate so as to vary the degree of twist in the yarn, nip rolls disposed so as to engage the yarn between said twisting means and said winding means and adapted to nip the yarn progressively along its length so as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and means for steaming the yarn between said nip rolls and said winding means. 7 v

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Description

Aug. 10, 1937. H, D Y 2,089,193
TEXTILE YARN AND FABRIC AND THE PRODUCTION THEREOF Filed Dec. 5, 1935 Patented tag. 10, 1937 TEX YARN AND FABRIC AND THE PRODUCTION THEREOF Henry Dreyfus, London, England Application December 5, 1935, Serial No. 53,033
In Great Britain December 7, 1934 a 15 Claims.
This invention relates to the production of textile materials, and particularly to the production of crepe yarns and fabrics, and has for its object the production of such materials giving enhanced crpe efiects.
According to the invention, twist is imparted to a crepe yarn to a degree that varies along the 'length of the yarn, and during the insertion of the twist steps are taken to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist. For example, the length of the yarn into which the twist is being inserted may terminate in a roll or pair of rolls round or between which the yarn passes so that by the engagement of the yarn with the roli or rolls running of the twist along the yarn is restrained. In this way high twist in one portion of the yarn is confined therein by the roll or rolls and has substantially no efiect on an adjacent portion of the yarn undergoing twisting; likewise, low twist in a portion of the yarn is confined to such portion, the low twist being substantially unaffected by higher twist in an adjacent portion of the .yarn undergoing twistmg.
The variation in the degree of twisting in the different portions of'the yarn is conveniently efiected by correspondingly varying the rate of travel of the yarn, in which case the rate of operation of the twisting device itself may be kept constant. Conveniently, the roll or rolls serving to prevent the running of the twist may be used to control the rate of travel of the yarn. Any suitable means may be provided to efi'ect the variation in the peripheral speed of the roll or rolls, several suitable devices for this purpose being described in U. S. application S. No. 538,486 filed 19th May 1931. The roll 'or rolls may thus serve to draw the yarnat a non-unigo form rate from a bobbin on a twisting spindle and deliver the yarn after it has received a corre sponding non-uniform twist to a, take-up bobbin. The take-up bobbin may also 'be driven at a similarly varying rate of speed, or it may be constantly driven, a compensator being provided if desired to allow for the varying rate of delivery of the yarn to the take-up bobbin.
The unevenness of the twist results in a corresponding unevenness of c rping power in the iii) yarn and an enhancement of the crpe efifect obtained by the use of the yarn. The strength of the effect may be varied by varying the lengths of the yarn containing the difierent degrees of;
twist. The alternation of the higher and lower 55 twists may be regular or irregular, asdesired,
A further feature of the invention comprises setting the twist as soon as possible after its insertion so as to fix the different degrees of twist in the respective portions of the yarn. One method of setting the twist isto apply size to the 5 yarn, for example immediately after the yarn has passed the roll or rolls described above, or the size may actually be appliedby the roll or one of the rolls as the yarn is engaged thereby.
The above-mentioned features may be applied 10 to the manufacture of crepe yarns of textile materials in general, e. g. natural silk, cotton and wool, or cellulose acetate or other cellulose derivatives and viscose or other cellulosic artificial yarns. 5
A further method of setting the twist comprises the subjection of the yarn to the action of moist steam or hot water, for which purpose the methods described in U. S. applications S. Nos. 746,134 filed 29th September 1934, 746,135 filed 29th September 1934, 25,054 filed 5th June 1935 and 4,085 filed 30th January 1935 may be employed. I
By way of example some forms of apparatus for carrying out the invention will now be de- 25 scribed in greater detail with reference to the accompanying drawing, in which-.
Fig. 1 illustrates somewhat diagrammatically an end elevation of apparatus for imparting to yarn a varying degree of twist and sizing and 30 drying'the yarn so twisted; and Fig' 2 is a similar view of apparatus for imparting to yarn. a. varying degree of twist andsteaming the yarn so twisted.
Referring to Figure 1, yarn 5 is drawn upward- 35 ly over the head of a twisting bobbin t by a pair of engaging nip rolls l, and is wound on a pack-= age 3 driven by a friction drum 9.
The drum 9 rotates with a peripheral speed substantially equal to that of the nip rolls l. or maybe somewhat lower, the rolls and the drum being driven in synchronism and at a varying rate by chains which engage sprockets ll fixed to the nip rolls and drum. The chains it are driven by sprockets l2 fixed to a shaft t3, the 5 shaft 93 being driven in turn at the desired rate by elliptical gearing it.
The twisting bobbin 5 rotates at a constant rate, and by reason of the varying rate of drawofi of the yarn 5 a varying degree of twist is inserted in the yarn, i. e. relatively high twist is inserted when the nip rolls 5 and drum 9 rotate slowly, and relatively low twist is inserted in the yarn when the rolls and drum rotate quickly.
The nip rolls ll reduce the tendency of the high twist from a portion of the yarn above the rolls to run back along the yarn to the portion of the yarn undergoing twisting; likewise a portion of yarn having just received a lower degree of twist and having passed the rolls, is maintained in such low-twisted condition and is substantially unaffected by higher twist in the yarn below the nip rolls.
The yarn 5 may also be sized immediately after twisting so as to fix the different degrees of twist in the respective portions of the yarn, by a sizing device situated immediately above the nip rolls 1. The sizing device comprises a tubular container l5 having an open top and a reentrant base, the base being formed as an annular cup 16 and being pierced at H for passage of the yarn.
The cup I6 is supplied with size from a container l8 through a pipe 19, the fiow of size along the pipe being controlled by a tap 20 which is adjusted to maintain the level of the size in the cup slightly higher than the level of the aperture ll. On passing through the aperture I! the yarn takes up the excess size which otherwise would escape from the cup, the size being dried on the yarn by a steam dryer 2| disposed round the path of the yarn above the sizing device. The dryer is supplied with steam at high temperature from a conduit 22, the exhaust steam escaping along a second conduit 23.
After passing through the dryer the sized yarn is traversed to and fro along the package 8 by a guide 24 reciprocated by cam or like means (not shown).
In Figure 2 the twisted yarn 5, drawn upwardly from the rotating bobbin 6 by the nip rolls '1, passes through a steam chamber 25 which is supplied by steam from a conduit 26, the twist being set in the yarn by the steam in the chamber.
The chamber 25 may be similar to the steam chamber described in British application No. 35191/34 filed 7th December 1934. As in Figure 1, the nip rolls 1 and drum 9 are driven intermittently from elliptical gearing Id. The yarn 5 is preferably moistened prior to passing into the chamber 25 by contacting with a roller 21 which dips into a water'trough 2B. The roller 21 may be grooved or felt-covered, and may rotate freely under the influence of the travelling yarn,
or may be driven by chain or like means (not shown).
It is found that the steam treatment is particularly efficacious in facilitating the orping of cellulose acetate and other cellulose derivative yarns.
The frequency of the highly-twisted and lesser twisted portions of the yarn may be varied by driving the elliptical gearing 14 faster or slower, as desired. The elliptical gears may also be changed for gears of difierent ratios. The chain sprockets II are similarly changeable, and if desired, the nip rolls I and drum 9 may be changed for rolls and a drum of larger or smaller diameter.
It will be understood that while elliptical gearoperated take-up mechanism is illustrated, other forms of variable or intermittent drive for the nip rolls 1 and drum 9 could be employed. For example, variable drive mechanisms of the types described in U. S. application S. No. 538,486 filed 19th May 1931 can be employed, the different rates of progress of the yarn from the twisting bobbin enabling the crping qualities of a yarn to be varied. Again, the rate of rotation of the twisting bobbin can be varied, the variations in the rate of take-up of the yarn and which comprises irregularly twisting the yarn and concomitantly with such irregular twisting, fixing the twist in the yarn.
2. Process for the production of crpe yarn of cellulose acetate or other organic derivative of cellulose, which comprises irregularly twisting the yarn and concomitantly with such irregular twisting fixing the twist in the yarn.
3. Process for the production of crepe yarn comprising twisting the yarn to a degree that varies along the length of the yarn, and concomitantly with such twisting, restraining the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and fixing the different degrees of twist in the respective portions of the yarn.
4. Process for the production of crepe yarn comprising twisting the yarn to a degree that varies along the length of the yarn, and concomitantly with such twisting sizing and drying the yarn so as to fix the different degrees of twist in the respective portions of the yarn.
5. Process for the production of crepe yarn of cellulose acetate or other organic derivative of cellulose, comprising twisting the yarn to a degree that varies along the length of the yarn, and concomitantly with such twisting sizing and drying the yarn so as to fix the different degrees of twist in the respective portions of the yarn.
6. Process for the production of crepe yarn comprising drawing the yarn at an irregular rate over the end of a rotating supply package so as to twist the yarn to a degree that varies along the length of the yarn, winding the yarn so drawn, and concomitantly with such winding nipping the yarn progressively along its length so as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and sizing and drying the yarn so as to fix the different degrees of twist in the respective portions of the yarn.
7. Process for the production of crepe yarn of cellulose acetate or other organic derivative of cellulose, comprising twisting the yarn to a degree that varies along the length of the yarn, and concomitantly with such twisting, nipping the yarn progressively along its lengthrso as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and applying steam to at least part of the yarn actually receiving twist, under conditions such that moisture is present, so as to fix the different degrees of twist in the respective portions of the yarn.
8. Process for the production of crpe yarn of cellulose acetate or other organic derivative of cellulose, comprising drawing the yarn at an irregular rate over the end of a rotating supply package so as to twist the yarn to a degree that varies along the length of the yarn, winding the yarn so drawn, and concomitantly with such winding restraining the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and applying steam to at least part of the yarn actually receiving twist, under conditions such that moisture is present, so as to fix the different degrees of twist in the respective portions of the yarn.
9. Process for the production of crepe yarn o cellulose acetate or other organic derivative of 7;.
cellulose, which comprises drawing the yarn at an irregular rate over the end of a rotating supply package so as to twist the yarn to a degree that varies along the length of the yarn, and concomitantly with such twisting, nipping the yarn progressively along'its length so as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and applying steam to at least part of the yarn actually receiving twist, under conditions such that moisture is present so as to fix the different degrees of twist in the respective portions of the yarn.
10. Apparatus for the production of crepe yarn, comprising means for twisting the yarn, means for winding the twisted yarn, means for driving said winding means at a varying rate so as to vary the degree of twist in the yarn, and means disposed between said twisting means and said winding means for fixing the twist in the yarn.
11. Apparatus for the production of crpe yarn,
' comprising means for twisting the yarn, means for winding the twisted yarn, means for driving said winding means at a varying rate so as to vary the degree of twist in the yarn,-nip rolls disposed so as to engage the yarn between said twisting means and said winding meansand adapted to nip the yarn progressively along its length so as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, means for moistening the yarn and means for steaming the yarn between said nip roll and said winding means.
12. Apparatus for the production of crepe yarn,
' comprising means for twisting the yarn, means nip rolls at a varying rate, and means disposed between said nip rolls and said winding means for fixing the difierent degrees of twist in the respective portions of the yarn.
13. Apparatus for the production of crepe yarn, comprising means for twisting the yarn, means for winding the twisted yarn, means for driving said winding means at a varying rate so as to vary the degree of twist in the yarn, nip rolls disposed so as to engage the yarn between said twisting means and said winding means and adapted to nip the yarn progressively along its length so as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and means disposed between said nip rolls and said winding means for fixing the different degrees of twist in the respective portions of the yarn.
' 14. Apparatus for the production of crepe yarn,
comprising means for twisting the yarn, means for winding the twisted yarn, means for driving said winding means at a varying rate so as to vary the degree of twist in the yarn, nip rolls disposed so as to engage the yarn' between said twisting. means and said winding means and adapted to nip the yarn progressively along its length so as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and means for sizing and drying the yarn between said nip rolls and said winding means.
15. Apparatus for the production of crepe yarn, comprising means for twisting the yarn, means for winding the twisted yarn, means for driving said winding means at a varying rate so as to vary the degree of twist in the yarn, nip rolls disposed so as to engage the yarn between said twisting means and said winding means and adapted to nip the yarn progressively along its length so as to restrain the tendency of higher twist in portions of the yarn to run into adjacent portions of lower twist, and means for steaming the yarn between said nip rolls and said winding means. 7 v
HENRY DREYFUS.
US53033A 1934-12-07 1935-12-05 Textile yarn and fabric and the production thereof Expired - Lifetime US2089193A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751747A (en) * 1956-02-08 1956-06-26 Patentex Inc Process of producing dual twist yarn
US2869316A (en) * 1957-03-12 1959-01-20 Plastic Wire & Cable Corp Twisted conductors and cables and method and apparatus for making the same
US2874445A (en) * 1954-10-04 1959-02-24 Du Pont Bulking yarn
US2876616A (en) * 1956-01-09 1959-03-10 Lees & Sons Co James Variable twist yarn forming apparatus
US2969197A (en) * 1954-12-01 1961-01-24 Barmag Barmer Maschf Apparatus for the spinning, twisting and winding of thread
US2986867A (en) * 1955-11-03 1961-06-06 Lees & Sons Co James Method of imparting dual twist to yarn
US2999351A (en) * 1956-07-17 1961-09-12 Deering Milliken Res Corp Bulky yarn
DE1114730B (en) * 1955-04-25 1961-10-05 Universal Winding Co Yarn consisting of endless threads with a fluctuating twist
US3009312A (en) * 1956-07-30 1961-11-21 Textile Licensing Company Methods of producing torque yarns
US3196602A (en) * 1962-05-11 1965-07-27 British Nylon Spinners Ltd Crimping synthetic thermoplastic yarns
US3458983A (en) * 1967-02-16 1969-08-05 Hamel Spinn & Zwirnerei Carl Process and apparatus for twisting threads

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2874445A (en) * 1954-10-04 1959-02-24 Du Pont Bulking yarn
US2969197A (en) * 1954-12-01 1961-01-24 Barmag Barmer Maschf Apparatus for the spinning, twisting and winding of thread
DE1114730B (en) * 1955-04-25 1961-10-05 Universal Winding Co Yarn consisting of endless threads with a fluctuating twist
US2986867A (en) * 1955-11-03 1961-06-06 Lees & Sons Co James Method of imparting dual twist to yarn
US2876616A (en) * 1956-01-09 1959-03-10 Lees & Sons Co James Variable twist yarn forming apparatus
US2751747A (en) * 1956-02-08 1956-06-26 Patentex Inc Process of producing dual twist yarn
US2999351A (en) * 1956-07-17 1961-09-12 Deering Milliken Res Corp Bulky yarn
US3009312A (en) * 1956-07-30 1961-11-21 Textile Licensing Company Methods of producing torque yarns
US2869316A (en) * 1957-03-12 1959-01-20 Plastic Wire & Cable Corp Twisted conductors and cables and method and apparatus for making the same
US3196602A (en) * 1962-05-11 1965-07-27 British Nylon Spinners Ltd Crimping synthetic thermoplastic yarns
US3458983A (en) * 1967-02-16 1969-08-05 Hamel Spinn & Zwirnerei Carl Process and apparatus for twisting threads

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