US3726073A - Combined twist tube and friction spindle and process - Google Patents

Combined twist tube and friction spindle and process Download PDF

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Publication number
US3726073A
US3726073A US00147852A US3726073DA US3726073A US 3726073 A US3726073 A US 3726073A US 00147852 A US00147852 A US 00147852A US 3726073D A US3726073D A US 3726073DA US 3726073 A US3726073 A US 3726073A
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United States
Prior art keywords
twist
yarn
friction
rollers
twisting
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Expired - Lifetime
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US00147852A
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English (en)
Inventor
O Stutz
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Heberlein and Co AG
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Heberlein and Co AG
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Publication date
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    • 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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/0226—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting multiple false-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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/0266—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting false-twisting machines

Definitions

  • This invention relates to the treatment of textile yarns, and more particularly, to a process and apparatus for compensation of internal stresses in textured synthetic textile yarns.
  • a disadvantage in the yarns thus obtained is that, when unwinding them overhead, before feeding them to a processing machine such as a knitting machine, undesired crinkling of the yarn occurs which may cause thread breakages and consequent undesirable down time of the treatment equipment.
  • This tendency to crinkle is at least partially due to torsional stresses which have been imparted intentionally for certain uses of the yarn, such as e.g., for yarns for stockings.
  • I contribute a combined false-twist device comprising a twist tube and a friction twist imparter, the yarn being first passed through the twist tube and then through deviation members and through the friction twist imparter so that a false-twist is effected in a direction opposite to that of the original twist.
  • An important feature of the present invention resides in the provision of an apparatus for effecting the process with a twist tube situated in the throat between two axially parallel rollers with tangential contact with the latter, one of the rollers being driven, and wherein the twist tube is pressed against the rollers by means of a permanent magnet.
  • the apparatus is characterized in that one of the rollers contains an axial bore and friction elements and in that means are provided for deviating the yarn upon leaving the twist tube and for passing the same through the bore and pressing it against the friction elements.
  • FIG. 1 is a schematic view of the apparatus of the present invention.
  • FIG. 2 illustrates one embodiment of the apparatus in elevation and, partially, in cross-section.
  • the yarn 1 supplied by a bobbin successively passes through a first pair of delivery or feed rollers 2, a heating device 3, the twisttube 4 of the combined false-twist device 5, the deviation elements 7, 7', 7", 7" which divert or change the direction of advance of the yarn, in this case by each.
  • the yarn next passes through the friction twist imparter 8 of the false-twist device 5 and a second pair of delivery rollers 6 wherefrom the yarn is passed to a windup device (not shown).
  • a second heat-setting element 9 can be placed between the deviation elements 7 and 7", these elements being replaceable by pairs of delivery rollers.
  • the apparatus shown in FIG. 2 includes two rollers 10 and 11 which consist of axially parallel pairs of discs l2, l2 and r 13, 13' with spacing hubs 14 and 15, respectively, rigidly connected with the discs.
  • the discs and hubs may be formed of synthetic rubber, for example.
  • the rollers 10 and 11 each are fixed on shafts 21 and 22, respectively, which are supported by ball bearings in bearing cases 23 and 24, respectively.
  • the shaft 21 is driven by means of a belt 26 running over the driving roller 25 fixed on the lower part of the shaft.
  • a twist tube 16 is supported parallel to the axes of the shafts 10, 11 and in tangential contact with the discs.
  • the twist tube is under the influence of a permanent horseshoe magnet, the pole shoes 17, 17' of which extend into the gap between the discs 10, 11.
  • the twist tube 16 presents a central part 18 of greater width consisting of laminated sheets of iron of low magnetic loss characteristics, and a forked heat 19 with a pin 20 passing transversely through the fork gap, around which the yarn is wound once.
  • the roller 10, the shaft 21, the top part 27 thereof, the bearing case 23 and the driving roller 25 are shown in axial cross-section.
  • the shaft 21 is formed with an axial bore 28.
  • An upper mounting block 27 and the lower part of the drivingroller 25 are formed with recesses 29 and 30, respectively, in each of which an annular friction body 31, 32 have been placed and are secured against falling out by protrusions 25' and 27'.
  • the friction bodies 31, 32 may consist of rings of a material with high friction coefficient with respect to the textile yarns, such as e.g., natural or synthetic rubber or of other suitable synthetic material.
  • exchangeable friction elements 31, 32 of different thickness may be inserted into the gaps 29, 30.
  • the process of the present invention is useful for the treatment of textured synthetic multifilament yarns consisting of polyamides, e.g., poly hexamethylene adipamide (polyamide 66), condensation products of epsilon-aminocaproic acid (polyamide 6) or of 11- aminoundecanoic acid (polyamide 1 l furthermore of polyesters (polyethylene glycol terephtalate), vinyl compounds (polyacrylonitrile) or polyolefines.
  • the process is particularly suitable for yarns to which a relatively low number of twists has been imparted during false-twist texturing and on which heat-setting has been effected at relatively low temperature.
  • Such yarns which are useful in the fine hosiery industry present rather high torsional stresses which must be temporarily compensated before introducing the yarns into the processing machine.
  • a reformation of these torsional stresses can be effected when developing crimp by steaming, treatment with hot air or with hot water.
  • I contribute a method and a single apparatus for effecting false-twisting of the same yarn in opposite directions; and that a single or double heating of the yarn may be effected without altering the twisting apparatus.
  • the deviation elements may be arranged so that the yarn is fed into the shaft 21 in the direction opposite to that described, i.e., in an upward direction, as viewed in FIGS. 1 and 2.
  • Apparatus according to claim 2 characterized in that at least one of the friction members is formed of a material with a high friction coefficient with respect to the yarn.
  • Apparatus according to claim 2 characterized in that separately drivable delivery means are provided for introducing the yarn into the bore (28) and for evacuation of the yarn from the same.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US00147852A 1970-06-05 1971-05-28 Combined twist tube and friction spindle and process Expired - Lifetime US3726073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH842370 1970-06-05

Publications (1)

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US3726073A true US3726073A (en) 1973-04-10

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US00147852A Expired - Lifetime US3726073A (en) 1970-06-05 1971-05-28 Combined twist tube and friction spindle and process

Country Status (5)

Country Link
US (1) US3726073A (enrdf_load_stackoverflow)
CH (1) CH525301A (enrdf_load_stackoverflow)
DE (1) DE2126117A1 (enrdf_load_stackoverflow)
FR (1) FR2095802A5 (enrdf_load_stackoverflow)
GB (1) GB1334305A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835631A (en) * 1971-12-23 1974-09-17 Barmag Barmer Maschf Apparatus and method for treating thermoplastic yarns
US3943693A (en) * 1973-10-01 1976-03-16 Heberlein Maschinenfabrik Ag. Apparatus for false-twist texturing of textile yarns
US20180171512A1 (en) * 2016-12-19 2018-06-21 Lintec Of America, Inc. Nanofiber yarn spinning system
CN116024714A (zh) * 2023-02-17 2023-04-28 江苏德力化纤有限公司 一种无捻免浆涤纶经纱的制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403566A (en) * 1964-07-08 1968-10-01 Klinger Mfg Co Ltd Means for driving spindles
US3516240A (en) * 1968-10-21 1970-06-23 Alamance Ind Inc Method of false-twisting plural ends of thermoplastic yarn

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403566A (en) * 1964-07-08 1968-10-01 Klinger Mfg Co Ltd Means for driving spindles
US3516240A (en) * 1968-10-21 1970-06-23 Alamance Ind Inc Method of false-twisting plural ends of thermoplastic yarn

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835631A (en) * 1971-12-23 1974-09-17 Barmag Barmer Maschf Apparatus and method for treating thermoplastic yarns
US3943693A (en) * 1973-10-01 1976-03-16 Heberlein Maschinenfabrik Ag. Apparatus for false-twist texturing of textile yarns
US20180171512A1 (en) * 2016-12-19 2018-06-21 Lintec Of America, Inc. Nanofiber yarn spinning system
US10900145B2 (en) * 2016-12-19 2021-01-26 Lintec Of America, Inc. Nanofiber yarn spinning system
US20210189606A1 (en) * 2016-12-19 2021-06-24 Lintec Of America, Inc. Nanofiber yarn spinning system
US11913142B2 (en) * 2016-12-19 2024-02-27 Lintec Of America, Inc. Nanofiber yarn spinning system
CN116024714A (zh) * 2023-02-17 2023-04-28 江苏德力化纤有限公司 一种无捻免浆涤纶经纱的制备方法

Also Published As

Publication number Publication date
CH525301A (de) 1972-07-15
GB1334305A (en) 1973-10-17
DE2126117A1 (de) 1971-12-09
FR2095802A5 (enrdf_load_stackoverflow) 1972-02-11

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