GB931065A - Improvements in or relating to the crimping of yarns or threads - Google Patents
Improvements in or relating to the crimping of yarns or threadsInfo
- 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
Links
Classifications
-
- 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
- D02G1/04—Devices for imparting false twist
- D02G1/08—Rollers or other friction causing elements
- D02G1/087—Rollers 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).
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4145871A (en) * | 1977-01-21 | 1979-03-27 | Toshiba Kikai Kabushiki Kaisha | False twisting apparatus |
-
1961
- 1961-04-27 BE BE603120A patent/BE603120A/en unknown
- 1961-05-01 GB GB1570361A patent/GB931065A/en not_active Expired
- 1961-05-02 ES ES0267052A patent/ES267052A1/en not_active Expired
Cited By (1)
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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