US3495391A - False-twist rubbing device - Google Patents

False-twist rubbing device Download PDF

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Publication number
US3495391A
US3495391A US692198A US3495391DA US3495391A US 3495391 A US3495391 A US 3495391A US 692198 A US692198 A US 692198A US 3495391D A US3495391D A US 3495391DA US 3495391 A US3495391 A US 3495391A
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US
United States
Prior art keywords
rubbing
discs
roving
guide
twist
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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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US692198A
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English (en)
Inventor
Hong H Njo
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.)
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Original Assignee
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Publication of US3495391A publication Critical patent/US3495391A/en
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Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/92—Spinning or twisting arrangements for imparting transient twist, i.e. false twist
    • D01H7/923—Spinning or twisting arrangements for imparting transient twist, i.e. false twist by means of rotating devices

Definitions

  • the invention relates to a device for rubbing of rovings and similar yarns and slivers composed of staple fibres, which device comprises two rubbing (11368 of about the same size, which discs are placed parallel and close to each other, are partially overlapping each other and arranged in such a manner that they are capable of rotation, and of a yarn guide situated at the feed side and in line with the common chord of the two rubbing discs.
  • Such a rubbing device is known as an auxiliary apparatus, which is placed between the back and front rolls of a drafting device in order to improve the mutual adherence of the fibres during the drafting of the roving.
  • a rubbing device provided with rubbing discs, is known, which is applied for smoothing and compressing of rovings. In this device, however, the roving is not fed between the discs along the common chord. It has appeared that the application of such device for the processing of roving and the like as a rule yields unsatisfactory results.
  • the object of the invention to provide a rubbing device of the type mentioned above, in which the objections described are overcome.
  • the device according to the invention is characterized in that the yarn guide is located at a distance of at most 10 mm. from the feeding point of the rubbing discs and at that location creates a twist stop for the roving.
  • a twist stop is obtained, by composing the yarn 3,495,391 Patented Feb. 17, 1970 guide of two guiding elements that are laterally offset in relation to each other.
  • the guiding elements are partially rounded by the roving, because of their being offset, thus preventing the false twist, effected in the roving through the rubbing discs, from being propagated in the roving beyond the guiding elements.
  • the yarn guide can create a twist stop is that part of the guiding surface of the yarn guide overlaps one of the rubbing discs partially and at such a short distance that the roving is pressed against the rubbing discs by said surface.
  • the pressing influence the roving undergoes between yarn guide and rubbing discs prevents the false twist from propagating into the roving that still has to pass the pressing point. Consequently the false twist is restricted to the part of the roving that is between the rubbing discs, thus, as it appeared, resulting in a very evenly processed and faultless roving.
  • the invention relates to, another trouble is that in case of irregularities in the thickness of the roving, the rubbing discs, which in the well-known devices are pressed together by a spring or weight load, exclusively and to an increased rate will condense a thicker roving part when it passes through them, whereas the adjacent roving passes freely and uncondensed between the rubbing discs. This causes the irregularities in the roving to exert an increased adverse influence on the quality of the yarn to be produced.
  • the invention aims at removing this drawback of the rubbing devices known and to this end the device according to the invention is further characterized in that the rubbing discs are provided with a rough surface on that side with which they face each other and that under the rough surface of at least one of the rubbing discs there is a layer of elastic material.
  • the width of the slit between the discs can adapt itself locally to the differences in thickness of the roving, so that the entire roving section that is between the discs, always keeps in touch with the latter, and a more even yarn is obtained.
  • the invention is elucidated hereafter by means of the embodiment of the rubbing device according to the invention as shown by the drawing.
  • FIG. 1 shows a side view
  • FIG. 2 shows a cross-section according the line II-'II in FIG. 1.
  • TZIIG. 3 shows a top view of an embodiment of the yarn gui e.
  • FIIgIG 4 shows a front view of the guide according to FIG. 5 shows a top view of a diflierent embodiment of the guide
  • FI151G. 6 shows a side View of the guide according to The roving 1 e.g. delivered by a drafting device is led through the parallel discs 3 and 4 via yarn guide 2.
  • Discs 3 and 4 are fixed on shafts 5 and 6 and are driven by the latter and with the same speed in the direction shown by arrows 7 and 8.
  • a layer 9 of rough material is stuck to disc 3, the latter consisting of metal.
  • Disc 4 is likewise provided with a rough layer 10, whereby under rough layer 10 there is, however, a layer 11 o elastic material.
  • Discs 3 and 4 are arranged in such a position relative to each other that they exert a certain pressure on roving 1. This pressure is evenly distributed by elastic intermediate layer 11 over that part of the roving section that is between discs 3 and 4.
  • FIGS. 3 and 4 An enlarged embodiment of guide 2 is shown in FIGS. 3 and 4.
  • This embodiment comprises a base plate 12, which plate serves to attach the guide to the frame of the rubbing device, a troughed guiding 13 and a hook 114 that is provided away from the axle of guide 13.
  • the deflection of roving 1 around hook 14 and around the edge of guide 13 serves the purpose of a twist stop, through which the false twist effected into roving 1 by the rolling action of discs 3 and 4, is confined to the roving section between yarn guide 2 and discs 3 and 4.
  • guide 2 consists of a plane metal sheet which is provided with a lip 17 bent in line with edge 16. This yarn guide is fixed to the frame of the rubbing device in such a relation to rubbing discs 3 and 4 that lip 17 is partly situated opposite the active surface of rubbing disc 4.
  • Roving 1 is fed across the upper surface of sheet 15, rounds edge 16 and passes the backside of lip 17 at the bottom side of sheet 15. This causes the roving to be pressed between disc 4- and lip 17 and prevents the roving from being set in rotation by disc 4 before it has passed lip 17. In this way it is conclusively prevented that freely sticking-out fibres wind themselves around the roving.
  • Device for rubbing of rovings and similar yarns and slivers composed of staple fibres which device comprises two rubbing discs of about the same size, which discs are placed parallel and close to each other so as to engage the entire roving section between the two rubbing discs substantially along the common chord of the discs, and which are partially overlapping each other and arranged in such a manner that they are capable of rotation, and a yarn guide situated at the feed side and in line with the common chord of the two rubbing discs, wherein the guide is located at a distance of at most 10 mm. from the feeding point of the rubbing discs and at that location creates a twist stop for the roving.
  • the guide comprises two guiding elements that are laterally offset in relation to each other.
  • the rubbing discs are provided with a rough surface on that side with which they face each other and that under the rough surface of at least one of the rubbing discs there is a layer of elastic material.
  • Device for rubbing of rovings and similar yarns and slivers composed of staple fibres which device comprises two rubbing discs of about the same size, which discs are placed parallel and close to each other, are partially overlapping each other and arranged in such a manner that they are capable of rotation, and a yarn guide situated at the feed side and in line with the common chord of the two rubbing discs, wherein the guide is located at a distance of at most l0 mm. from the feeding point of the rubbing discs and at that location creates a twist stop for the roving, part of the guiding surface of the guide overlapping one of the rubbing discs partially and at such a short distance that the roving is pressed against said one rubbing disc by said surface.
  • the guide comprises a plane sheet fixed parallel to the axes of the rubbing discs, which sheet at the end of a substantially straight edge has a lip bent at a right angle and in line with this edge, and wherein the guide is fixed relatively to the rubbing discs in such a position that the said edge lies in line with the common chord of the rubbing discs and the lip overlaps one of the rubbing discs at a short distance.
  • Device for rubbing of rovings and similar yarns and slivers composed of staple fibres which device comprises two rubbing discs of about the same size, which discs are placed parallel and close to each other, are partially overlapping each other and arranged in such a manner that they are capable of rotation, and a yarn guide situated at the feed side and in line with the common chord of the two rubbing discs, the guide being located at a distance of at most 10 mm.
  • the guide including two guiding elements that are laterally offset in relation to each other, part of the guiding surface of the guide overlapping one of the rubbing discs partially and at such a short distance that the roving is pressed against said one rubbing disc by said surface.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US692198A 1966-12-23 1967-12-20 False-twist rubbing device Expired - Lifetime US3495391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6618063A NL6618063A (enrdf_load_html_response) 1966-12-23 1966-12-23

Publications (1)

Publication Number Publication Date
US3495391A true US3495391A (en) 1970-02-17

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ID=19798532

Family Applications (1)

Application Number Title Priority Date Filing Date
US692198A Expired - Lifetime US3495391A (en) 1966-12-23 1967-12-20 False-twist rubbing device

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US (1) US3495391A (enrdf_load_html_response)
DE (1) DE1685929A1 (enrdf_load_html_response)
FR (1) FR1548095A (enrdf_load_html_response)
GB (1) GB1209620A (enrdf_load_html_response)
NL (1) NL6618063A (enrdf_load_html_response)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828541A (en) * 1972-05-03 1974-08-13 Heberlein & Co Ag Friction false-twist device
US4144044A (en) * 1977-11-18 1979-03-13 Owens-Corning Fiberglas Corporation Method and apparatus for forming fibers
US4145871A (en) * 1977-01-21 1979-03-27 Toshiba Kikai Kabushiki Kaisha False twisting apparatus
US4339915A (en) * 1979-07-14 1982-07-20 Barmag Barmer Maschinenfabrik Apparatus for false twisting yarn
US4370851A (en) * 1980-06-14 1983-02-01 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having adjustable friction discs
US4370852A (en) * 1980-07-09 1983-02-01 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4370853A (en) * 1979-07-14 1983-02-01 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4372106A (en) * 1980-06-14 1983-02-08 Barmag Barmer Maschinenfabrik Ag Drive system for yarn false twisting apparatus
US4383405A (en) * 1980-09-08 1983-05-17 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus and method
US4387557A (en) * 1981-03-21 1983-06-14 Barmag Barmer Maschinenfabrik Ag False twisting apparatus and method
US4391091A (en) * 1981-03-17 1983-07-05 Barmag Barmer Maschinenfabrik Ag False twisting apparatus and method
US4402179A (en) * 1981-04-09 1983-09-06 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having improved thread-up capability
US4406116A (en) * 1980-09-15 1983-09-27 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having friction discs
US4408449A (en) * 1980-06-26 1983-10-11 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4414803A (en) * 1979-07-14 1983-11-15 Barmag Barmer Maschinenfabrik Ag False twisting apparatus
US4424664A (en) 1979-07-14 1984-01-10 Barmag Barmer Maschinenfabrik Ag Friction false twist apparatus
EP0411685A1 (en) * 1989-08-01 1991-02-06 SAVIO S.p.A. Rubbing device comprising counter-rotating eccentric discs

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3104296C2 (de) * 1981-02-07 1985-01-31 Aktiengesellschaft F.R. Mettler's Söhne Maschinenfabrik, Arth Verfahren zum Fachen und Zwirnen und Vorrichtung zur Durchführung des Verfahrens
FR2560228A1 (fr) * 1984-02-24 1985-08-30 Asa Sa Dispositif pour l'obtention d'un file de fibres

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1758864A (en) * 1929-04-10 1930-05-13 Strader Alfred Spinning machine
US3156084A (en) * 1960-05-02 1964-11-10 Res Nv False twist device
US3373554A (en) * 1965-05-06 1968-03-19 Heberlein Patent Corp Yarn twisting apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1758864A (en) * 1929-04-10 1930-05-13 Strader Alfred Spinning machine
US3156084A (en) * 1960-05-02 1964-11-10 Res Nv False twist device
US3373554A (en) * 1965-05-06 1968-03-19 Heberlein Patent Corp Yarn twisting apparatus

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828541A (en) * 1972-05-03 1974-08-13 Heberlein & Co Ag Friction false-twist device
US4145871A (en) * 1977-01-21 1979-03-27 Toshiba Kikai Kabushiki Kaisha False twisting apparatus
US4144044A (en) * 1977-11-18 1979-03-13 Owens-Corning Fiberglas Corporation Method and apparatus for forming fibers
US4339915A (en) * 1979-07-14 1982-07-20 Barmag Barmer Maschinenfabrik Apparatus for false twisting yarn
US4370853A (en) * 1979-07-14 1983-02-01 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4424664A (en) 1979-07-14 1984-01-10 Barmag Barmer Maschinenfabrik Ag Friction false twist apparatus
US4414803A (en) * 1979-07-14 1983-11-15 Barmag Barmer Maschinenfabrik Ag False twisting apparatus
US4370851A (en) * 1980-06-14 1983-02-01 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having adjustable friction discs
US4372106A (en) * 1980-06-14 1983-02-08 Barmag Barmer Maschinenfabrik Ag Drive system for yarn false twisting apparatus
US4389841A (en) * 1980-06-14 1983-06-28 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus
US4408449A (en) * 1980-06-26 1983-10-11 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4370852A (en) * 1980-07-09 1983-02-01 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4383405A (en) * 1980-09-08 1983-05-17 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus and method
US4406116A (en) * 1980-09-15 1983-09-27 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having friction discs
US4391091A (en) * 1981-03-17 1983-07-05 Barmag Barmer Maschinenfabrik Ag False twisting apparatus and method
US4387557A (en) * 1981-03-21 1983-06-14 Barmag Barmer Maschinenfabrik Ag False twisting apparatus and method
US4402179A (en) * 1981-04-09 1983-09-06 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having improved thread-up capability
EP0411685A1 (en) * 1989-08-01 1991-02-06 SAVIO S.p.A. Rubbing device comprising counter-rotating eccentric discs

Also Published As

Publication number Publication date
NL6618063A (enrdf_load_html_response) 1968-06-24
DE1685929A1 (de) 1971-09-23
GB1209620A (en) 1970-10-21
FR1548095A (enrdf_load_html_response) 1968-11-29

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