US3327462A - Yarn separating means - Google Patents

Yarn separating means Download PDF

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Publication number
US3327462A
US3327462A US464797A US46479765A US3327462A US 3327462 A US3327462 A US 3327462A US 464797 A US464797 A US 464797A US 46479765 A US46479765 A US 46479765A US 3327462 A US3327462 A US 3327462A
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United States
Prior art keywords
yarn
yarns
rolls
conical
laterally
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Expired - Lifetime
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US464797A
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English (en)
Inventor
Wyatt William Kirk
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.)
Turbo Machine Co
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Turbo Machine Co
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Publication date
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Priority to US464797A priority Critical patent/US3327462A/en
Priority to DE19661660645 priority patent/DE1660645A1/de
Priority to NL6608417A priority patent/NL6608417A/xx
Priority to BE682715D priority patent/BE682715A/xx
Priority to GB27067/66A priority patent/GB1137880A/en
Priority to ES0328066A priority patent/ES328066A1/es
Application granted granted Critical
Publication of US3327462A publication Critical patent/US3327462A/en
Anticipated expiration legal-status Critical
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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
    • D02G1/028—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 by twisting or false-twisting at least two filaments, yarns or threads, fixing the twist and separating the filaments, yarns or threads

Definitions

  • the separating device of the present invention has other uses, an important use is as a component of apparatus used for false-twisting double-end thermoplastic yarns, and when used for this purpose, the invention represents a modification of the separating means shown in US. Patent 3,091,908, issued June 4, 1963, to G. A. Carruthers, and assigned to the assignee of the present application.
  • conical withdrawal rolls are driven in timed relation with respect to the in-feed rolls so that the yarn between the withdrawal rolls and in-feed rolls is maintained under a limited and predeterminable amount of tension.
  • the apparatus is preferably so operated that the peripheral speeds, at approximately the longitudinal centers, of the conical withdrawal rolls are equal to the peripheral speeds of the in-feed rolls, and in operation, the conical withdrawal rolls function automatically to compensate for any difference of yarn tension as may occur between the two single ends of the double-end yarn and tend to cause the point of separation to be maintained at substantially the same point.
  • conical roll separating means operate very satisfactorily in false-twisting apparatus, they operate best when the yarn is supplied or fed through the apparatus at a rate substantially equal to that at which it is taken away. However, they may also be used satisfactorily for use in false-twisting apparatus in which the yarn is passed through a controlled tension device at the in-feed end and pulled through the falsetwist zone by conical nip rolls located at the output end, particularly where a tension-control means is provided.
  • the present invention provides a yarn-separating control device which stabilizes the yarn separation point when a controlled amount of tension is applied at the infeed end.
  • An object of the present invention is to prevent such undesirable occurrences from happening and to maintain or stabilize the separation point at a substantially fixed location irrespective of unavoidable variations in the frictional resistance offered to the individual single ends of yarn.
  • FIG. 1 is a perspective elevational view, partly diagrammatic, showing one specifi form of false-twisting apparatus embodying the present invention
  • FIG. 2 is an enlarged front elevational view showing the front conical drive rollers which pull the yarn, and showing the yarn separating device of the apparatus of FIG. 1;
  • FIG. 3 is a side elevational view of the separating device, which also shows the mounting of the rear conical rollers;
  • FIG. 4 is a top plan view of the conical rollers appearing in the preceding figures showing also the mounting of the rear conical rollers;
  • FIG. 5 is a view in perspective showing a modified form of yarn separating device embodying features of this invention.
  • FIG. 6 illustrates in perspective another form of separating device according to this invention.
  • FIG. 7 depicts diagrammatically yet another form of separating device embodying features of this invention.
  • a pair of single ends of yarn 20 and 21 from supply sources 10 and 11 are pretwisted, as by hand, to form the double-end twisted yarn Y, which is passed through false-twist apparatus shown to include a tensioning device 12, a heater unit 13, and a cooling zone 14, which may be ambient air.
  • the twisted double-end yarn Y then passes between and under a pair of laterally-spaced fingers 36, 37 which are part of the separation control device identified comprehensively by reference numeral 30.
  • the individual single ends of yarn and 21 then separate and pass outwardly over and about guide spools 74 and 75, which are also part of the separating device 30.
  • the single end of yarn 21 passes through the nip of conical rolls 17, 19, through guide eye 47, down through reciprocating traversing guide 23, and on to takeup roll 25.
  • Takeup rolls 24 and 25 are spring biased, by means not shown, and are driven peripherally by frictional engagement with a drive roller 26 which is illustrated as driven by electric motor through belt drives 41 and 42.
  • the front roll 16 and 17 of each pair of conical nip rolls is preferably provided with a surface of soft resilient rubber or other material having a high coeflicient of friction.
  • the back conical rolls 18 and 19 may preferably have a smooth metal surface.
  • the conical nip rolls 16, 18 and 17, 19 function to pull the yarn through the falsetwisting apparatus, against suitable tension supplied by device 12.
  • the conical nip rolls may be mounted for rotation and driven by suitable means other than as shown.
  • the front conical rolls 16, 17 are mounted on a common shaft 48, shown as driven by belt 44 which in turn is driven by motor 40 through belt drives 41 and 43.
  • the speed of the conical nip rolls 16 and 17 has a relationship to the speed of the drive roll 26 which drives the take-up rolls 24, 25.
  • the front conical rolls 16, 17 are shown supported by a hollow rectangular support member which projects horizontally forwardly from an upright plate 52 mounted on frame member 53 of the apparatus.
  • Support member 50 has a circular base 51 which is adjustable angularly relative to plate 52 so that the orientation of the conical nip rolls may be adjusted.
  • An arm 54 is shown secured to, and extending horizontally forwardly from, the upper edge of the plate 52, and supports a vertically disposed plate 56 upon which is mounted the yarn separation control or stabilization device 30.
  • Plate 56 is provided with a vertical slot 156 for adjusting plate 56 vertically, as by means of screw 57.
  • the separating device 36 includes a disc 53 which is pivotally supported On plate 56 as by an integral stud 59 having a spring-loaded wing nut 159.
  • An inverted generally V-shaped spring-tensioned wire member 70 has a circular crotch portion which loops over and around the periphery of disc 58 and has a pair of arms 72 and 73 which extend downwardly and outwardly. At the lower extremity of each of the arms '72, 73 is a guide spool 74 and 75.
  • the arms 72, 73 are spring-tensioned outwardly, and are provided with a restraining collar 76 which embraces the arms 72 and 73 just below the disc 58. Collar 76 constrains the arms 72, 73 and maintains fixed (and adjustable) the lateral spacing of the guide spools 74, 75. The spacing between spools 74, 75 may be reduced by forcing the collar 76 downward and by holding the collar at its lowered position, as by the adjustable threaded stop bolt 176.
  • the rear conical rolls 18, 1? may be mounted for rotation and pressed against the surface of the front conical rolls by any suitable means.
  • One suitable means is illustrated in FIGURES 1, 2, 3, and 4.
  • the rear conical rollers 18 and 19 are supported by L-shaped brackets 62 and 63.
  • Bracket 62 is adjustably secured pivotally to the top surface of the hollow rectangular support member 50, as by screw 162, and extends outwardly and downwardly, as best seen in FIGS. 1 and 2, while bracket 63 is adjustably pivotally secured to the bottom surface of support member 50, as by screw 163, and extends outwardly in the opposite direction and upwardly.
  • Air cylinders 68 and 69 mounted on circular base 51, are adapted to press the brackets 62 and 63 forwardly, thereby to cause the brackets 62, 63 to pivot about their respective pivot points and thereby to urge the rear conical rolls 18, 19 against the forward conical rolls 16, 17.
  • Piston 66 of air cylinder 68 abuts against a finger 64 which forms an integral part of bracket 62 and extends downward from the upper leg thereof.
  • Piston 67 of cylinder 69 abuts against a finger 65 which is a part of bracket 63 and extends upward from the lower leg thereof.
  • Tension springs 71 and 71a are connected between upright plate 52 and the pivotal brackets 62, 63 for pulling the brackets pivotally rearwardly when the pistons 66 and 67 are retracted, thereby to withdraw the rear conical rolls 18, 19, from frictional engagement with the front conical rolls 16, 17.
  • the single ends of yarn 20 and 21 are assumed to have been pretwisted so that a twist extends from the separation point S upwardly, in FIG. 1, through the cooling and heating zones 14, 13, and through the tension device 12 to the point of convergence P.
  • the yarn passes through and then outwardly under a pair of forwardly extending spaced-apart fingers 36, 37. These fingers receive and oppose the upward thrust of the yarn and prevent the point of separation S from moving upstream, thereby maintaining point S at a fixed level.
  • a limit stop is provided in the form of U-shaped bracket 77 mounted on the plate 56 and adjustable in the vertical direction in slot 156. If one or the other of the arms 72, 73 contacts one of the forwardly extending arms of bracket 77, further movement in that direction of the wire structure 70 is prevented.
  • a pair of mercury limit switches 80 and 81 mounted at opposing ends of a bracket 82 secured to the upper edge of disc 58.
  • the mercury switches 80, 81 are opposin-gly disposed at inclined positions.
  • the advantages and features of the yarn separating device 30 of the present invention are by now no doubt understood.
  • the device 30 allows the conical rolls 1619 to pull pretwisted double-end yarn from their individual sources through the heating and cooling zones 13, 14 (wherein the false twist is set) against a selected amount of drag or resistance introduced by the tension device 12, without allowing the yarn ends to run off one or the other end of the conical nip rolls.
  • the device 30 functions to compensate automatically for any differences which may tend to occur in the drag or resistance which opposes travel of the separate yarn ends 20, 21 through the false twisting apparatus.
  • the device 30 does this (1) by maintaining the ply separation point S substantially fixed in the vertical direction (this is done by the fingers 36, 37) and (2) by introducing a counter force which opposes shifting of the ply separation point in the lateral direction.
  • the resistance or drag on the right yarn end 21 should become greater than that on the left yarn end 20, the guide spool 75 will move to the left, as viewed in FIG. 1, thereby causing spool 74 to also move to the left.
  • movement of spool 74 to the left is opposed by the increased force required to pull yarn end at the faster velocity corresponding to the larger diameter of the conical rolls 16, 18 at the new nip point.
  • the yarn separation point S tends to be stabilized laterally by the device 30.
  • the device includes adjustment, stop limit, and protective features already referred to.
  • FIGS. 14 and described above represents the presently preferred form
  • Other forms may be used. Two such other forms are illustrated in FIGS. 5 and 6.
  • the form illustrated in FIG. 6 is very similar to that of FIGS. 1-4 and will be described first.
  • the arms 172, 173 which support the guide spools 74, 75 are horizontally disposed, rather than vertically disposed as in FIGS. 1-4.
  • the arms 172, 173 are separate, rather than integral, and the spacing between the spools 74. 75 is adjustable, as by means of a highfriction bolt and lock nut assembly 158 which allows lowfriction pivotal movement of the V-struc-ture 172, 173 as a unit about point 158 while maintaining the selected fixed spacing between spools 74, 75.
  • the structure of FIG. 6 is basically similar to that of FIGS. 1-4.
  • the fingers 136, 137 of FIG. 6 correspond to fingers 36, 37 of FIGS. 1-4. These fingers are fixed in position laterally and maintain the yarn separation point S at a fixed level vertically.
  • FIG. 5 the guide spools are omitted, being replaced by the non-rotatable fingers 274, 275, but this is a relatively insignificant difference over the structures of FIGS. l-4 and 6, previously described.
  • the more significant difference in FIG. 5 is that the other pair of fingers 236, 237, which control the vertical level at which the yarn separation take place, are mounted on plate 27 0' for pivotal lateral movement, rather than being fixed as in the case of FIGS. l-4 and 6. As shown in FIG.
  • the guide fingers 274, 275, and also the fingers 236, 237 are mounted on and project forwardly from the lower edge portion of triangular plate 270 which is pivotally suspended at its upper corner as by a nut and bolt assembly 258 adjustably supported in the slot of a support member 256.
  • the single yarn ends 20, 21 are taken from the yarn separation point S down between fingers 236, 23-7, then laterally outward in opposing directions, over and around fingers 274, 275, and then down to the nips of the conical pull rolls.
  • the stabilizing action is similar in most respects to that already described in connection with FIGS. 1-4 and 6, but with the arrangement shown in FIG. 5, variation in the vertical level of the separation point S may occur in the event the lateral pivotal motion of the plate 270 is large.
  • FIG. 7 depicts graphically yet another arrangement in which the triangular plate 370, mounted for pivotal movement about pivot point 358, is provided with but two fingers 336 and 337.
  • the fingers 336, 337 control the vertical level of the yarn separation point S.,They also serve the function of fingers 274 and 275 of FIG. 5.
  • the conical drive rolls are not mounted on a common shaft, as is preferred, and as is the case in all of the previously described embodiments.
  • the stabilizing action in FIG. 7 is generally similar to that previously described and will by now be readily understood.
  • first and second guide means spaced apart laterally, one on either side of the path of said double-end yarn, and about which the single ends of yarn are respectively passed enroute to the nips of the respective pairs of conical rolls, said first and second guide means being adapted to receive and oppose the downstream and laterally inward components of thrust of the said angle ends of yarn; pivotally-mounted support means for supporting said first and second guide means for unitary movement in one lateral direction or the other according to the relative magnitudes of the inward components of thrust, for changing the nip points in response to diiferences sensed in said relative magnitudes; means fixed mounted between
  • Apparatus as claimed in claim 2 characterized in that a power drive is provided for said conical nip rolls and in that switch means are provided mounted on said pivotal support means for shutting off the power drive when the pivotal movement reaches a predetermined limit.
  • a yarn separating device for controlling and stabilizing the point at which the double-end yarn separates into the two single ends, said device including: left and right yarn guides at fixed spacing laterally from each other, one on either side of the vertical plane of the double-end twisted yarn in the false-twist zone, for guiding the separate single ends of yarn to the nips of said left and right pairs of conical rolls respectively and for receiving.
  • pivotal support means supporting said left and right yarn guides for lateral pivotal movement while maintaining their spacing fixed relative to each other; fixed means disposed between, said left and right yarn guides for receiving and opposing the upstream components of thrust of said single ends of yarn for preventing movement of the separating point in an upstream direction; andmeans for adjusting the position.
  • Apparatus as claimed in claim 4 further. characterized in that means are provided for adjusting the fixed spacing between said left and right yarn guides.
  • Apparatus as claimed in claim 6 further characterized in that power drive mans are provided for driving said left and right pairs of conical rolls and in that switch means are provided for disconnecting said power drive when the lateral movement of said yarn guides reaches a preselected limit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US464797A 1965-06-17 1965-06-17 Yarn separating means Expired - Lifetime US3327462A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US464797A US3327462A (en) 1965-06-17 1965-06-17 Yarn separating means
DE19661660645 DE1660645A1 (de) 1965-06-17 1966-05-03 Vorrichtung zur Lageregelung des Trennpunkts falsch gedrallter Garnstraenge
NL6608417A NL6608417A (el) 1965-06-17 1966-06-16
BE682715D BE682715A (el) 1965-06-17 1966-06-17
GB27067/66A GB1137880A (en) 1965-06-17 1966-06-17 Apparatus for and method of modifying heat-settable filamentary yarns
ES0328066A ES328066A1 (es) 1965-06-17 1966-06-17 Aparato para modificar filamentos de hebras termoestables.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US464797A US3327462A (en) 1965-06-17 1965-06-17 Yarn separating means

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US3327462A true US3327462A (en) 1967-06-27

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US464797A Expired - Lifetime US3327462A (en) 1965-06-17 1965-06-17 Yarn separating means

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US (1) US3327462A (el)
BE (1) BE682715A (el)
DE (1) DE1660645A1 (el)
ES (1) ES328066A1 (el)
GB (1) GB1137880A (el)
NL (1) NL6608417A (el)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411282A (en) * 1967-01-16 1968-11-19 Techniservice Corp Textile strand treatment
US3469388A (en) * 1966-11-02 1969-09-30 Nat Res Dev Process for treating filamentary material
US3530656A (en) * 1968-10-17 1970-09-29 Turbo Machine Co Multiple twist yarn texturizing apparatus and method
US3638410A (en) * 1968-05-30 1972-02-01 Bayer Ag Method and an apparatus for the production of crimped synthetic filaments
US3678676A (en) * 1969-05-27 1972-07-25 Allied Chem Heat setting trapped pre-inserted twist
US3747317A (en) * 1972-02-23 1973-07-24 Du Pont Guide device for separating yarn ends
US3863434A (en) * 1971-07-21 1975-02-04 Werner Doschko False twisting of yarn
EP0106067A2 (de) * 1982-09-29 1984-04-25 Retech AG Einrichtung zur Herstellung von torsionsgekräuselten Fäden
US20210032783A1 (en) * 2016-04-25 2021-02-04 Ronak Rajendra Gupta Method for manufacturing a multi-ply separable filament yarns and multi-ply separable textured yarn

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987869A (en) * 1957-12-03 1961-06-13 Deering Milliken Res Corp Yarn crimping apparatus and methods
US3091908A (en) * 1962-05-21 1963-06-04 Turbo Machine Co Apparatus and method for false twisting yarns
US3192697A (en) * 1963-08-26 1965-07-06 Turbo Machine Co Apparatus and method for false twisting yarns
US3237391A (en) * 1964-12-30 1966-03-01 Turbo Machine Co Pretwisting apparatus and method
US3261155A (en) * 1963-02-01 1966-07-19 Heberlein Patent Corp Method and apparatus for treatment of yarns
US3261156A (en) * 1963-07-25 1966-07-19 Heberlein Patent Corp Apparatus and method for crimping textile yarns

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987869A (en) * 1957-12-03 1961-06-13 Deering Milliken Res Corp Yarn crimping apparatus and methods
US3091908A (en) * 1962-05-21 1963-06-04 Turbo Machine Co Apparatus and method for false twisting yarns
US3261155A (en) * 1963-02-01 1966-07-19 Heberlein Patent Corp Method and apparatus for treatment of yarns
US3261156A (en) * 1963-07-25 1966-07-19 Heberlein Patent Corp Apparatus and method for crimping textile yarns
US3261116A (en) * 1963-07-25 1966-07-19 Heberlein Patent Corp Method and apparatus for crimping yarns
US3192697A (en) * 1963-08-26 1965-07-06 Turbo Machine Co Apparatus and method for false twisting yarns
US3237391A (en) * 1964-12-30 1966-03-01 Turbo Machine Co Pretwisting apparatus and method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469388A (en) * 1966-11-02 1969-09-30 Nat Res Dev Process for treating filamentary material
US3411282A (en) * 1967-01-16 1968-11-19 Techniservice Corp Textile strand treatment
US3638410A (en) * 1968-05-30 1972-02-01 Bayer Ag Method and an apparatus for the production of crimped synthetic filaments
US3530656A (en) * 1968-10-17 1970-09-29 Turbo Machine Co Multiple twist yarn texturizing apparatus and method
US3678676A (en) * 1969-05-27 1972-07-25 Allied Chem Heat setting trapped pre-inserted twist
US3863434A (en) * 1971-07-21 1975-02-04 Werner Doschko False twisting of yarn
US3747317A (en) * 1972-02-23 1973-07-24 Du Pont Guide device for separating yarn ends
EP0106067A2 (de) * 1982-09-29 1984-04-25 Retech AG Einrichtung zur Herstellung von torsionsgekräuselten Fäden
EP0106067A3 (de) * 1982-09-29 1985-10-16 Retech AG Einrichtung zur Herstellung von torsionsgekräuselten Fäden
US4553382A (en) * 1982-09-29 1985-11-19 Retech Ag Device for producing twist-crimped threads
US20210032783A1 (en) * 2016-04-25 2021-02-04 Ronak Rajendra Gupta Method for manufacturing a multi-ply separable filament yarns and multi-ply separable textured yarn
US12098483B2 (en) * 2016-04-25 2024-09-24 Ronak Rajendra Gupta Method for manufacturing a multi-ply separable filament yarns and multi-ply separable textured yarn

Also Published As

Publication number Publication date
ES328066A1 (es) 1967-04-01
NL6608417A (el) 1966-12-19
BE682715A (el) 1966-12-01
DE1660645A1 (de) 1972-03-23
GB1137880A (en) 1968-12-27

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