GB931065A - Improvements in or relating to the crimping of yarns or threads - Google Patents

Improvements in or relating to the crimping of yarns or threads

Info

Publication number
GB931065A
GB931065A GB1570361A GB1570361A GB931065A GB 931065 A GB931065 A GB 931065A GB 1570361 A GB1570361 A GB 1570361A GB 1570361 A GB1570361 A GB 1570361A GB 931065 A GB931065 A GB 931065A
Authority
GB
United Kingdom
Prior art keywords
discs
yarn
arm
false
rubbing surfaces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1570361A
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.)
Onderzoekings Instituut Research
Original Assignee
Onderzoekings Instituut Research
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Onderzoekings Instituut Research filed Critical Onderzoekings Instituut Research
Publication of GB931065A publication Critical patent/GB931065A/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02Producing 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
    • D02G1/04Devices for imparting false twist
    • D02G1/08Rollers or other friction causing elements
    • D02G1/087Rollers or other friction causing elements between the flanks of rotating discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

931,065. Spinning yarns; twist-tubes; stopmotions. ONDERZOEKINGSINSTITUUT RESEARCH N.V. May 1, 1961 [May 2, 1960], No. 15703/61. Classes 120 (2) and 120 (3). False-twisting apparatus for use in crimping thermoplastic yarns comprises rubbing surfaces formed as annular bands on the side-faces of two discs which face each other. The axes of the discs are slightly inclined to one another, so that they engage the yarn only at their point of nearest approach, they are displaced laterally relative to the yarn in opposite directions so that both rubbing surfaces have a component of movement in the feeding direction as well as a component in the direction of movement required to produce the false-twist, and the shortest distance between them is 30-85% of the mean diameter of the discs. The rubbing surfaces are so inclined that they make an angle with each other of less than 10 degrees and they may be shaped as parts of hyperbolic planes or conical surfaces. As shown, yarn 1 passing through guides 25, 24 (carried on fixed arms 23, 22) and between contrarotating discs 2 and 3 are engaged, and false-twisted, by rubber rims 4 and 5. The discs are driven from a belt 12 (which may serve a number of false-twisting stations) through a grooved drum 11, string 10 or belt (not shown) and grooves 8 and 9, or by gearing (not shown). The discs are supported by a rigid arm 26 and an arm 27 attached to a pivot 28 which can turn in two bearings 29, 29a, and is so inclined to the vertical that the disc 2 tends to move away from disc 3. The discs are urged together by a spring 31, acting on an arm 30 connected to arm 27 and tensioned by a pivoted member 33 the position of which is normally maintained by the tension in the yarn on which an extension or feeler 36 rests. If yarn 1 breaks, the feeler 36 falls, member 33 deflects to enable spring 31 to relax, and the discs separate. Deflection of arm 27 is limited by a pin thereon engaging in a slot 37 and controlled by a liquid e.g. oil, damper, Fig. 4 (not shown).
GB1570361A 1960-05-02 1961-05-01 Improvements in or relating to the crimping of yarns or threads Expired GB931065A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL251139 1960-05-02

Publications (1)

Publication Number Publication Date
GB931065A true GB931065A (en) 1963-07-10

Family

ID=19752308

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1570361A Expired GB931065A (en) 1960-05-02 1961-05-01 Improvements in or relating to the crimping of yarns or threads

Country Status (3)

Country Link
BE (1) BE603120A (en)
ES (1) ES267052A1 (en)
GB (1) GB931065A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145871A (en) * 1977-01-21 1979-03-27 Toshiba Kikai Kabushiki Kaisha False twisting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145871A (en) * 1977-01-21 1979-03-27 Toshiba Kikai Kabushiki Kaisha False twisting apparatus

Also Published As

Publication number Publication date
ES267052A1 (en) 1961-07-16
BE603120A (en) 1961-08-16

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