US3763642A - False twisting apparatus - Google Patents

False twisting apparatus Download PDF

Info

Publication number
US3763642A
US3763642A US00029525A US3763642DA US3763642A US 3763642 A US3763642 A US 3763642A US 00029525 A US00029525 A US 00029525A US 3763642D A US3763642D A US 3763642DA US 3763642 A US3763642 A US 3763642A
Authority
US
United States
Prior art keywords
tube
twist
magnetic
discs
zones
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
Application number
US00029525A
Other languages
English (en)
Inventor
J Raschle
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.)
Heberlein Patent Corp
Original Assignee
Heberlein Patent Corp
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 Heberlein Patent Corp filed Critical Heberlein Patent Corp
Application granted granted Critical
Publication of US3763642A publication Critical patent/US3763642A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D02G1/06—Spindles

Definitions

  • ABSTRACT Apparatus for false-twisting yarn wherein two axially F ign Application Priority Data parallel pairs of discs form a throat, and a twist tube Ma 21, 1969 Switzerland ..7694/69 for crimping textile yarn is supported tangentially against the peripheral surfaces of the discs in the [52] U.S. Cl. 57/77.45 t r at herebetween and is pressed against same by [51] Int. Cl D02g 1/06 m gnet means.
  • the twist tube comprising a central [58] Field of Search...57/77.377.45,34 HS; 74/210 portion equipped with a jacket consisting partially of non-magnetic material having cylindrical zones on 56 Ref n Ci both sides of its center which zones are formed of ma- UNITED STATES PATENTS terial having low magnetic loss characteristics, these k 1 57 7 4 zones being positioned opposite the poles of the mag- 2: 2; a netic means to assure diametral magnetic flux through 3,267,657 8/1966 Kunzle et al 5 7/7745 the tube- 3,l42,953 8/1964 Gassner et al.
  • SHEET 2 [IF 2 NEYS This invention relates to a device for imparting a twist to a running length of textile yarn, and more particularly to apparatus for false-twisting such yarns.
  • the false-twist process is applied to lengths of textile yarns while the yarns advance longitudinally.
  • the speed of advance of the yarns is limited by the speed of revolution of the false-twist spindles or tubes. It follows that if the speed of production of yarns textured by the false-twist process is to be increased, then the speed of rotation of the spindles or false-twist tubes must also be increased.
  • False-twist devices which comprise twist tubes arranged in the throat formed by two axially parallel rollers and in tangential contact with the surfaces thereof, one of the rollers being driven and the other being an idler roller, the twist tubes being pressed against the rollers by magnetic means.
  • each of the rollers consists of two parallel discs maintained at equal axial distances by means of spacers, and the magnetic attraction is provided by means of a permanent magnet arranged between the discs and adjacent the spacers.
  • the twist tube is equipped with a central part of larger diameter than that of its extremeties and formed by a stack of discs of sheet iron or the like, having low magnetic loss characteristics.
  • This known false-twist device has achieved considerable commercial acceptance and has contributed increased production speeds by reason of enabling speeds of revolution of the twist tube of the order of several hundred thousand revolutions per minute.
  • my invention consists essentially in apparatus for the crimping of textile yarns by the false-twist process which comprises, two axially parallel pairs of discs arranged to form a throat therebetween, a twist tube supported in tangential contact with the peripheral surfaces of the discs and magnet means pressing the twist tubes against such surfaces.
  • the twist tube comprises a central zone or region of larger diameter than that of its extremeties, and this central part is formed primarily of non-magnetic material, but has spaced cylindrical zones formed of material having low magnetic loss characteristics, these zones being positioned opposite the poles of the magnetic means so as to assure diametral magnetic flux through the twist tube.
  • FIG. 1 is an enlarged central longitudinal crosssectional view of a twist tube in accordance with the present invention
  • FIG. 2 is a front elevational view of one form of falsetwist device according to the present invention.
  • FIG. 3 is a cross-sectional view taken along the line 3-3 of FIG. 2;
  • FIG. 4 is a view similar to that of FIG. 2, but illustrating a second embodiment of the invention.
  • FIG. 5 is a cross-sectional view taken along the line 5-5 of FIG. 4.
  • a jacket 4 of relatively large diameter surrounds a central part of the tube and has a median zone 5 and two extremeties 6,6. formed of non-magnetic material, such for example as a titanium-aluminumvanadiam alloy, the median zone being separated from the extremities by stacks 7,7 of adjacent discs formed of sheet iron having low magnetic loss characteristics, the discs being annular in configuration and surrounding the tube 1.
  • a central bore 8 extends through the jacket 4 and tube 1 and is perpendicular with respect to the pin 3, thus making it possible to thread a yarn to be textured through the tube and to wind the same about the pin 3.
  • FIGS. 2 and 3 there are shown two axially parallel pairs of discs 9,9 and 10,10 which may be formed of a suitable synthetic material such as Vulcolan, for example.
  • the respective discs of each pair may be separated by spacers 11 and 12; and one pair of discs may be driven while the other idles, as is already known to those skilled in the art.
  • the twist tube 1 is positioned in the throat formed between the discs 9, l0 and 9, 10' with its longitudinal axis parallel to the axes of the discs. It will be seen that the portions of the tube which extend beyond the jacket 4 contact the peripheral surfaces of the discs so that when the driven pair of discs are rotated, it will effect rotation of the tube 1 which in turn will cause the idler pair of discs to rotate.
  • two permanent horseshoe magnets l3, 14 are arranged between the discs 9, 10 on the one hand and 9',l0' on the other hand, such that the U- planes of the magnets are parallel with each other and perpendicular with respect to the axis of the twist tube.
  • the poles 15,15 of the magnet 13 are positioned opposite the stack of low magnetic loss material 7 of the jacket 4; and the poles 16,16 of the magnet 14 are positioned opposite the stack 7', whereby the lines of magnetic flux pass diametrally through the twist tube.
  • the organization of parts is essentially the same as that already described except that the U-planes of magnets 17, 18 are parallel with respect to the axis of the twist tube.
  • the poles 20, 20' are adjacent one side of the stacks 7,7, respectively, while the poles 19, 19' are adjacent the same stacks, respectively, the poles being arranged so that the lines of flux pass diametrally through the stacks, as is the case with the embodiments already described.
  • I contribute a false-twist device of the class described wherein the stacks of discs of magnetic material on the tube are so positioned relatively to the poles of the magnets, that eddy current and hysteresis losses may be kept to a minimum; and by dividing the material of low magnetic loss characteristics into two separate stacks, an improved dissipation of the heat produced by the eddy currents is obtained.
  • My contribution also makes it possible to produce a twist tube wherein the entire jacket need not be formed of low loss magnetic material as in known prior apparatuses, so that the jacket may be produced essentially from nonmagnetic material with a low specific weight and high specific resistance.
  • my novel device permits the availability of a high force to restore the twist tube axially to its normal position relatively to the magnetic poles, and by the same token, relatively small axial displacements are encountered so that the twist tube may be relatively shorter and thus more rigid than known twist tubes, wherefore higher resonance frequency and higher critical speeds of revolution of the twist tube are obtained.
  • apparatus for false twisting textile yarns which include a pair of rollers, at least one of which is driven, spaced one from the other to form a crotch therebetween, a yarn twist tube positioned in said crotch in frictional engagement with the peripheral edges of said rollers at portions substantially spaced longitudinally of said tube and having means for imparting a twist to yarn passing therethrough upon rotation of said tube, and magnetic means having magnetic poles located between the axes of said rollers and acting on said tube between said spaced portions to maintain the tube positioned in said crotch and in said frictional engagement; the improvement which comprises a jacket extending longitudinally of and surrounding the central part of said tube and which consists essentially of nonmagnetic material and contains, on both sides of a relatively long median zone thereof, a relatively short annular zone of material having low magnetic loss characteristics, each said annular zone being arranged between two magnetic poles of said magnetic means whereby the magnetic lines of flux flow diametrally throug the twist tube.
  • each of the two annular zones of the jacket of the twist tube consists of a stack of adjacent discs of sheet iron of low magnetic loss characteristics.
  • a twist tube of the class described including, a body having a longitudinal bore, means in said bore about which a yarn extending through said bore may be wound, the improvement which comprises a jacket surrounding a portion of said tube and having a single relatively long median zone of non-magnetic material extending longitudinally of said body and two extremities of non-magnetic material the median zone being separated from each extremity by a relatively short cylindrical zone formed of material of low magnetic loss characteristics.
  • a twist tube according to claim 3 characterized in that said relatively short cylindrical zones are formed of stacked annular discs of iron.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US00029525A 1969-05-21 1970-04-17 False twisting apparatus Expired - Lifetime US3763642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH769469A CH510757A (de) 1969-05-21 1969-05-21 Vorrichtung zum Kräuseln von Textilgarnen durch Falschdrall

Publications (1)

Publication Number Publication Date
US3763642A true US3763642A (en) 1973-10-09

Family

ID=4329113

Family Applications (1)

Application Number Title Priority Date Filing Date
US00029525A Expired - Lifetime US3763642A (en) 1969-05-21 1970-04-17 False twisting apparatus

Country Status (5)

Country Link
US (1) US3763642A (enExample)
CH (1) CH510757A (enExample)
DE (1) DE2024499A1 (enExample)
FR (1) FR2046186A5 (enExample)
GB (1) GB1308019A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008563A (en) * 1974-06-20 1977-02-22 Kugelfischer Georg Schafer & Co. False twisting device
US4497168A (en) * 1981-05-02 1985-02-05 W. Schlafhorst & Co. Method and apparatus for open-end spinning
US20060068279A1 (en) * 2002-06-04 2006-03-30 Tulip Corporation Cold formed battery terminal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH592754A5 (enExample) * 1975-11-27 1977-11-15 Heberlein & Co Ag

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3142953A (en) * 1961-05-17 1964-08-04 Kugelfischer G Schaefer & Co Drive system for false twisters
US3232037A (en) * 1963-04-26 1966-02-01 Roannais Constr Textiles False-twist spindle
US3267657A (en) * 1958-11-11 1966-08-23 Heberlein Patent Corp False twisting device
US3304706A (en) * 1964-06-25 1967-02-21 Klinger Mfg Co Ltd Apparatus for driving and supporting a spindle
US3313096A (en) * 1963-04-19 1967-04-11 Societex Devices for driving bodies revolving at high speeds, and in particular false twist spindles in crimping machines
US3348370A (en) * 1959-02-25 1967-10-24 Gassner Hans Drive arrangement for false twisting devices
US3355870A (en) * 1963-12-02 1967-12-05 Klinger Mfg Co Ltd Driving transmissions for high speed rotary spindles
US3363409A (en) * 1964-02-17 1968-01-16 Kugelfischer G Schaefer & Co Rotary tube for crimping filamentary synthetic fibers by imparting thereto a false twist
US3392518A (en) * 1966-11-02 1968-07-16 Scragg & Sons Textile apparatus
US3403566A (en) * 1964-07-08 1968-10-01 Klinger Mfg Co Ltd Means for driving spindles
US3465509A (en) * 1966-02-26 1969-09-09 Scragg & Sons Textile apparatus

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267657A (en) * 1958-11-11 1966-08-23 Heberlein Patent Corp False twisting device
US3348370A (en) * 1959-02-25 1967-10-24 Gassner Hans Drive arrangement for false twisting devices
US3142953A (en) * 1961-05-17 1964-08-04 Kugelfischer G Schaefer & Co Drive system for false twisters
US3313096A (en) * 1963-04-19 1967-04-11 Societex Devices for driving bodies revolving at high speeds, and in particular false twist spindles in crimping machines
US3232037A (en) * 1963-04-26 1966-02-01 Roannais Constr Textiles False-twist spindle
US3355870A (en) * 1963-12-02 1967-12-05 Klinger Mfg Co Ltd Driving transmissions for high speed rotary spindles
US3363409A (en) * 1964-02-17 1968-01-16 Kugelfischer G Schaefer & Co Rotary tube for crimping filamentary synthetic fibers by imparting thereto a false twist
US3304706A (en) * 1964-06-25 1967-02-21 Klinger Mfg Co Ltd Apparatus for driving and supporting a spindle
US3403566A (en) * 1964-07-08 1968-10-01 Klinger Mfg Co Ltd Means for driving spindles
US3465509A (en) * 1966-02-26 1969-09-09 Scragg & Sons Textile apparatus
US3392518A (en) * 1966-11-02 1968-07-16 Scragg & Sons Textile apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008563A (en) * 1974-06-20 1977-02-22 Kugelfischer Georg Schafer & Co. False twisting device
US4497168A (en) * 1981-05-02 1985-02-05 W. Schlafhorst & Co. Method and apparatus for open-end spinning
US20060068279A1 (en) * 2002-06-04 2006-03-30 Tulip Corporation Cold formed battery terminal

Also Published As

Publication number Publication date
CH510757A (de) 1971-07-31
FR2046186A5 (enExample) 1971-03-05
DE2024499A1 (de) 1970-11-26
GB1308019A (en) 1973-02-21

Similar Documents

Publication Publication Date Title
US2855750A (en) Thread twisting device
US3142953A (en) Drive system for false twisters
US3785140A (en) Device for winding threads, particularly textile threads
US3232037A (en) False-twist spindle
US3313096A (en) Devices for driving bodies revolving at high speeds, and in particular false twist spindles in crimping machines
US3058289A (en) Twisting device
US3763642A (en) False twisting apparatus
US3665306A (en) Process for measuring revolution speed of a body
US3304706A (en) Apparatus for driving and supporting a spindle
US2863277A (en) Yarn twister
US3475895A (en) Twist tube for false-twist device
US3501908A (en) False twisting method
US2741714A (en) Dual adjustment magnetic slip brake
US3267657A (en) False twisting device
US3348370A (en) Drive arrangement for false twisting devices
US3518824A (en) Apparatus for crimping textile yarns by false-twisting
US4008563A (en) False twisting device
US3465509A (en) Textile apparatus
US3355871A (en) Transmission means for driving and rotating false twist spindles
US3777467A (en) Apparatus for false-twisting multifilament threads and the like
US3363409A (en) Rotary tube for crimping filamentary synthetic fibers by imparting thereto a false twist
US3559392A (en) False-twist spindle
US3791122A (en) False twist process and apparatus
US3574273A (en) False twist spindle and method of threading the same
US3355870A (en) Driving transmissions for high speed rotary spindles