US3872661A - Textile apparatus - Google Patents

Textile apparatus Download PDF

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Publication number
US3872661A
US3872661A US396114A US39611473A US3872661A US 3872661 A US3872661 A US 3872661A US 396114 A US396114 A US 396114A US 39611473 A US39611473 A US 39611473A US 3872661 A US3872661 A US 3872661A
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US
United States
Prior art keywords
disc
discs
rim portion
strand
combination
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 - Lifetime
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US396114A
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English (en)
Inventor
Ronald Spencer Eaves
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.)
Ernest Scragg and Sons Ltd
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Ernest Scragg and Sons Ltd
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Filing date
Publication date
Application filed by Ernest Scragg and Sons Ltd filed Critical Ernest Scragg and Sons Ltd
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Publication of US3872661A publication Critical patent/US3872661A/en
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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
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/082—Rollers or other friction causing elements with the periphery of at least one disc

Definitions

  • the strand is caused to travel over each disc rim at an angle inclined to the plane of rotation of the disc so that it is rotated with a substantially pure rolling motion on the disc rim, substantially without slip.
  • the twist impartation becomes independent of the variations of frictional effect usually associated with friction twisting, in which there has hitherto been substantial slip between strand and friction surface. Consequently, a very precise and positive control of the twisting operation results, giving a surprisingly regular texturing effect in false twist crimping strands such as yarns of synthetic polymeric materials.
  • a typical device of the kind to which this invention relates comprises three parallel, equiangularly spaced shafts each having a set of three discs with rubber or polyurethane tyres, all of equal radius and equally axially spaced, and arranged so that they overlap one another substantially when viewed axially.
  • the discs are so axially spaced and overlapped that a strand passing through the device follows a zig-zag spiralling path and lies on the friction surface of each tyre at an angle to the direction of motion ofthe surface equal, or substantially equal, to the desired twist angle, and in this man ner the pure rolling motion is achieved.
  • the inlet and outlet guides In order that the strandshould lie at the correct angle on the end disc, the inlet and outlet guides have to be offset from an axial line equidistant from the axes of the three shafts. This, however, can give rise to difficulties in threading-up the device, and it is more convenient from that point of view to locate the inlet and outlet guides upon said axial line, with the result that the strand is not at the correct angle on the end discs.
  • the angle between the strand and the plane of rotation of the disc is greater than the desired twist angle, with the effect that the inlet end disc tends to drive more twist into the strand than the succeeding discs, upon the rims of which the strand lies at the correct angle because all the preceding discs act as correctly located guides (although the first disc may, because the strand is incorrectly positioned, guide the strand not quite correctly on to the second disc).
  • the resulting higher twist will have a tendency to cause slip, thereby re-introducing the irregularities sought to be avoided, although of course to a much lesser extent than with previous friction twisters which operated altogether in the slipping mode.
  • the present invention comprises a false twisting device of the kind described in which at least one end disc has a lesser coefficient of friction with the strand than the inner discs.
  • each end disc has such a lower co-efficient of friction, and even two discs at one or both ends may advantageously have such a lower co-efficient.
  • the end disc or discs may have a polished metal rim such as aluminium or steel, or may be of selected surface roughness and/or material.
  • FIG. 1 is an elevation
  • FIG. 2 is a plan.
  • the friction twisting device shown in FIGS. 1 and 2 comprises nine equal radius discs 11 mounted as sets of three on three equiangularly spaced parallel shafts 12.
  • the discs 11 are equally axially spaced on each shaft 12, and the shafts are so spaced that the discs overlap substantially when viewed axially, as shown in FIG. 2.
  • the shafts 12 are rotatably carried in bearings 13 mounted in a base plate 14, either fixedly mounted or adjustably mounted so that shaft separation can be altered to accommodate strands of differing diameter and requiring different twist levels.
  • Below the base plate 14 the projections of the shafts 12 have wharves or driving pulleys 15 by which, via a belt or band drive, all the shafts can be rotated at the same speed.
  • the spacing of the discs 11, by shaft spacing and by disc axial separation by spacers (not shown) on the shafts 12, is such that a strand passed through the device lies on the rim of each disc at an angle to the direction of motion of the discs rim equal to the desired twist angle.
  • the device acts in a non-slipping mode, the strand having a pure, or sub stantially pure, rolling motion on the surface of the discs 11.
  • Appropriate positions for the guides 17, 18 are indicated in the drawings in broken lines.
  • disc 11(l) is made at least with a rim of smooth aluminium or stainless steel, for example, or if the whole disc is made of such material, or of other material to have a rim of selected surface roughness which has this feature of less friction with the strand. Further improvement can be obtained by providing that those discs 11 next adjacent the end discs 11(I) and 11(0) also have this feature of less friction with the strand.
  • the number of friction discs remaining is sufficient to give good control of the twisting effect, for which reason it may be desirable to provide the device with a larger total number of itial to a terminal disc of said plurality with a substantially pure rolling motion over each disc rim portion in succession and at an angle inclined to the plane of rotation of the respective disc, at least the rim portion of at least said initial disc being of material which has a lesser coefficient of friction with the strand than the rim portions of others of said discs.
  • a combination comprising a plurality of parallel equi-angularly spaced shafts; and a plurality of sets of rotary discs each having a rim portion, said sets each being mounted on one of said shafts and the discs of each set being spaced axially of the associated shaft, the discs of all sets overlapping one another and forming a zig-zag spiralling path in which a strand to be false-twisted can travel from an initial to a terminal disc of said plurality with a substantially pure rolling motion over each disc rim portion in succession and at an angle inclined to the plane of rotation of the respective disc, at least the rim portion of at least one of said initial and terminal discs being of material which has a lesser coefficient of friction with the strand than the rim portion of others of said discs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Braking Arrangements (AREA)
US396114A 1972-09-08 1973-09-10 Textile apparatus Expired - Lifetime US3872661A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4189672A GB1381132A (en) 1972-09-08 1972-09-08 False twist device

Publications (1)

Publication Number Publication Date
US3872661A true US3872661A (en) 1975-03-25

Family

ID=10421858

Family Applications (1)

Application Number Title Priority Date Filing Date
US396114A Expired - Lifetime US3872661A (en) 1972-09-08 1973-09-10 Textile apparatus

Country Status (8)

Country Link
US (1) US3872661A (enrdf_load_stackoverflow)
JP (1) JPS4992356A (enrdf_load_stackoverflow)
CA (1) CA976436A (enrdf_load_stackoverflow)
CH (1) CH555904A (enrdf_load_stackoverflow)
DE (1) DE2345128B2 (enrdf_load_stackoverflow)
FR (1) FR2199019B1 (enrdf_load_stackoverflow)
GB (1) GB1381132A (enrdf_load_stackoverflow)
IT (1) IT995303B (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932985A (en) * 1973-11-03 1976-01-20 Ernest Scragg & Sons Limited Yarn friction false twist device
US3940914A (en) * 1974-01-04 1976-03-02 Kugelfischer Georg Schafer & Co. False twister
US3942313A (en) * 1974-01-15 1976-03-09 Kugelfischer Georg Schafer & Co. False twister
US3955350A (en) * 1973-12-11 1976-05-11 Kugelfischer Georg Schafer & Co. False twister
US3964248A (en) * 1974-06-12 1976-06-22 Kugelfischer Georg Schafer & Co. False twisting devices
US3973383A (en) * 1974-12-26 1976-08-10 Monsanto Company Friction falsetwist device
US3973384A (en) * 1974-12-30 1976-08-10 Monsanto Company Friction aggregate
US4018041A (en) * 1975-04-25 1977-04-19 Kugelfischer Georg Schafer & Co. Friction disc for false twisting apparatus
US4059948A (en) * 1975-05-23 1977-11-29 Asa S.A. Automatic threading false-twist spindle
US4149366A (en) * 1976-12-14 1979-04-17 Bayer Aktiengesellschaft Threading method and threading devices for disc-type friction twisters
US4235071A (en) * 1979-03-05 1980-11-25 Barmag Barmer Maschinenfabrik Aktiengesellschaft Yarn false twist apparatus
US5099642A (en) * 1989-12-13 1992-03-31 Fag Kugel Fischer Georg Schafer Threading a friction false twisting unit
CN113122981A (zh) * 2019-12-30 2021-07-16 中国科学院上海硅酸盐研究所 一种用于陶瓷纤维的初捻合股复捻一体机
CN113969440A (zh) * 2021-11-19 2022-01-25 中国科学院化学研究所 一种纱线加捻合股装置及方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52114756A (en) * 1976-03-18 1977-09-26 Teijin Ltd Method and apparatus for friction false twisting
DE2658034A1 (de) * 1976-12-22 1978-07-06 Bayer Ag Falschdralltexturierverfahren fuer feine polyamid-garne
JPS5438959A (en) * 1977-09-01 1979-03-24 Toray Industries Friction false twisting apparatus
GB8525048D0 (en) * 1985-10-10 1985-11-13 Rieter Scragg Ltd False twisting apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939269A (en) * 1957-06-11 1960-06-07 Scragg & Sons Apparatus for twisting and/or crimping yarn
US3287890A (en) * 1964-10-07 1966-11-29 Monsanto Co Apparatus for twisting yarn
US3705488A (en) * 1971-05-20 1972-12-12 Turbo Machine Co Apparatus and method for producing a high degree of twist in yarn
US3762149A (en) * 1971-05-14 1973-10-02 Heberlein & Co Ag False-twist device
US3777467A (en) * 1972-03-22 1973-12-11 Karlsruhe Augsburg Iweka Apparatus for false-twisting multifilament threads and the like

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB854781A (en) * 1957-06-11 1960-11-23 Scragg & Sons Improvements in and relating to apparatus for twisting yarn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939269A (en) * 1957-06-11 1960-06-07 Scragg & Sons Apparatus for twisting and/or crimping yarn
US3287890A (en) * 1964-10-07 1966-11-29 Monsanto Co Apparatus for twisting yarn
US3762149A (en) * 1971-05-14 1973-10-02 Heberlein & Co Ag False-twist device
US3705488A (en) * 1971-05-20 1972-12-12 Turbo Machine Co Apparatus and method for producing a high degree of twist in yarn
US3777467A (en) * 1972-03-22 1973-12-11 Karlsruhe Augsburg Iweka Apparatus for false-twisting multifilament threads and the like

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932985A (en) * 1973-11-03 1976-01-20 Ernest Scragg & Sons Limited Yarn friction false twist device
US3955350A (en) * 1973-12-11 1976-05-11 Kugelfischer Georg Schafer & Co. False twister
US3940914A (en) * 1974-01-04 1976-03-02 Kugelfischer Georg Schafer & Co. False twister
US3942313A (en) * 1974-01-15 1976-03-09 Kugelfischer Georg Schafer & Co. False twister
US3964248A (en) * 1974-06-12 1976-06-22 Kugelfischer Georg Schafer & Co. False twisting devices
US3973383A (en) * 1974-12-26 1976-08-10 Monsanto Company Friction falsetwist device
US3973384A (en) * 1974-12-30 1976-08-10 Monsanto Company Friction aggregate
US4018041A (en) * 1975-04-25 1977-04-19 Kugelfischer Georg Schafer & Co. Friction disc for false twisting apparatus
US4059948A (en) * 1975-05-23 1977-11-29 Asa S.A. Automatic threading false-twist spindle
US4149366A (en) * 1976-12-14 1979-04-17 Bayer Aktiengesellschaft Threading method and threading devices for disc-type friction twisters
US4235071A (en) * 1979-03-05 1980-11-25 Barmag Barmer Maschinenfabrik Aktiengesellschaft Yarn false twist apparatus
US5099642A (en) * 1989-12-13 1992-03-31 Fag Kugel Fischer Georg Schafer Threading a friction false twisting unit
CN113122981A (zh) * 2019-12-30 2021-07-16 中国科学院上海硅酸盐研究所 一种用于陶瓷纤维的初捻合股复捻一体机
CN113122981B (zh) * 2019-12-30 2022-08-09 中国科学院上海硅酸盐研究所 一种用于陶瓷纤维的初捻合股复捻一体机
CN113969440A (zh) * 2021-11-19 2022-01-25 中国科学院化学研究所 一种纱线加捻合股装置及方法

Also Published As

Publication number Publication date
IT995303B (it) 1975-11-10
DE2345128A1 (de) 1974-03-21
JPS4992356A (enrdf_load_stackoverflow) 1974-09-03
FR2199019B1 (enrdf_load_stackoverflow) 1979-01-26
CH555904A (de) 1974-11-15
FR2199019A1 (enrdf_load_stackoverflow) 1974-04-05
CA976436A (en) 1975-10-21
DE2345128B2 (de) 1977-12-22
GB1381132A (en) 1975-01-22

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