US3791120A - Apparatus for heating of endless filaments, yarns or the like - Google Patents

Apparatus for heating of endless filaments, yarns or the like Download PDF

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US3791120A
US3791120A US00290849A US29084972A US3791120A US 3791120 A US3791120 A US 3791120A US 00290849 A US00290849 A US 00290849A US 29084972 A US29084972 A US 29084972A US 3791120 A US3791120 A US 3791120A
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yarn
arc
electrodes
moistening
passes
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US00290849A
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L Hess
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Heberlein and Co AG
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Heberlein and Co AG
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass

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  • Watkins Attorney, Agent, or FirmFitzpatrick, Cella, Harper & Scinto ABSTRACT Apparatus for heating yarns of indefinite continuous length as the yarn advances longitudinally comprises an arc discharge device positioned in the vicinity of the yam'br' in contact therewith so that the arc follows the yarn or passes through same. Means may also be provided to moisten the yarn with a conductive fluid before the arc is applied.
  • the present invention relates to apparatus for the heating of endless filaments, yarns or the like, hereinafter referred to as yarns.
  • the yarn is either passed over a heated surface or is heated to the desired temperature by means of hot air or steam.
  • apparatus for heating yarns using infrared, microwaves and high frequency waves have been proposed.
  • the yarn may be passed through a discharge distance or arc length which may or may not extend transversely with respect to the direction of movement of the yarn.
  • the electrodes may be arranged in pairs at a certain distance from each other in the immediate vicinity of the yarn or in contact therewith so that the arc directly follows the yarn over a certain distance, or passes through the same, thus to heat the yarn to a desired temperature.
  • the yarn may first be treated with any conducting material, or it may be moistened with conductive liquid by a moistening apparatus arranged in advance of the electrodes. It is also possible to apply textile finishing agents within the arc.
  • the moistening device may be a fog chamber as this assures absolutely regular humidification of the yarn.
  • the liquid may, however, also be applied by a humidified roller, a wick or by capillary tubes; and a regular shape for the arc can be obtained by using electrodes in the form of rings surrounding the yarn.
  • FIGURE of the drawings shows, schematically, a delivery bobbin 1 from which the yarn is extracted by over guiding rollers 3 and 4 by means of a delivery device 5 in the direction of the arrow.
  • the electrodes 6 and 7 are supplied with electric current by a high voltage source 8.
  • the yarn 2 is moistened by wick 9 of the moistening device 10 so that the arc discharge passes along and through the yarn 2 between the electrodes 6 and 7.
  • An important application of the apparatus of the present invention is its application in the texturing of yarns of indefinite length as well as of bundles of filaments consisting of thermoplastic synthetic material, particularly of polyamides and polyesters, by falsetwisting and heat-setting the false-twist.
  • Using an arc discharge distance makes possible intense heat-setting over a relatively short distance, the space taken by the heating device being thereby substantially reduced which is considerably important in false-twist texturing machines having a great number of treatment stations.
  • the same may comprise electromagnetic or electronic control means for interrupting the arc discharge in regular or irregular intervals.
  • Apparatus for heating yarns of indefinite continuous length characterized by means for advancing the yarn longitudinally, and means for providing an arc discharge adjacent the path of the yarn.
  • Apparatus according to claim 1 wherein the arc discharge is provided in advance of false-twist means whereby the yarn is heat-set in twisted condition.
  • Apparatus according to claim 1 characterized in that at least one pair of electrodes is arranged immediately adjacent the yarn, that the arc extends in parallel with the yarn.
  • Apparatus according to claim 3 characterized in that the electrodes are so spaced from the yarn that the arc passes lengthwise through the yarn.
  • Apparatus according to claim 3 characterized in that in the distance through which the yarn passes, and in advance of the electrodes, means are provided for moistening the yarn with a conductive liquid.
  • Apparatus according to claim 5 characterized in that the moistening means is a fog chamber.
  • the moistening device comprises a wick transferring the liquid into contact with the yarn.
  • Apparatus according to claim 5 characterized in that the moistening device comprises capillaries in contact with the yarn for transferring the liquid to the yarn.
  • Electrodes are in the form of rings through which the yarn is passed.
  • Apparatus according to claim 1 characterized in that the means for providing the arc discharge are so arranged that the arc extends transversely with respect to the yarn movement.
  • control means are provided for interrupting the arc discharge in regular or irregular intervals.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

Apparatus for heating yarns of indefinite continuous length as the yarn advances longitudinally comprises an arc discharge device positioned in the vicinity of the yarn or in contact therewith so that the arc follows the yarn or passes through same. Means may also be provided to moisten the yarn with a conductive fluid before the arc is applied.

Description

United States Patent 1191 Hess [ Feb. 12, 1974 1 APPARATUS FOR HEATING OF ENDLESS F ILAMENTS, YARNS OR THE LIKE [75] Inventor: Leodegar Hess, Wattwil,Switzerland [73] Assignee: Heberlein & Co. A.G., Wattwil,
Switzerland [22] Filed: Sept. 21, 1972 [21] Appl. No.: 290,849
[30] Foreign Application Priority Data 57/157 R, 157 TS, 157 MS; 28/61,62; V219/383,V384, 388
[56] References Cited UNITED STATES PATENTS 1,557,730 10/1925 Smith 28/61 X 2,956,393 10/1960 Ubbelohde 57/157 TS 2,993,333 7/1961 Bergh et a1. 28/62 X 3,093,955 6/1963 Cadario 23/62 X 3,343,207 9/1967 Mottern et a]... 28/62 UX 3,400,528 9/1968 Nimtz et a1. 28/61 X 3,483,374 12/1969 Erben 219/383 X 3,732,395 5/1963 David 57/34 HS X Primary Examiner-Donald E. Watkins Attorney, Agent, or FirmFitzpatrick, Cella, Harper & Scinto ABSTRACT Apparatus for heating yarns of indefinite continuous length as the yarn advances longitudinally comprises an arc discharge device positioned in the vicinity of the yam'br' in contact therewith so that the arc follows the yarn or passes through same. Means may also be provided to moisten the yarn with a conductive fluid before the arc is applied.
16 Claims, 1 Drawing Figure PATENTEBFEBIZ m4 Q 3791; 120
APPARATUS FOR HEATING OF ENDLESS FILAMENTS, YARNS OR THE LIKE The present invention relates to apparatus for the heating of endless filaments, yarns or the like, hereinafter referred to as yarns. In known apparatus of the class described, the yarn is either passed over a heated surface or is heated to the desired temperature by means of hot air or steam. Also such apparatus for heating yarns using infrared, microwaves and high frequency waves have been proposed.
It is the purpose of the present invention to provide a heating apparatus for endless yarns which constitute an improvement of the known systems particularly as far as technical expenditure and density of energy are concerned.
According to the present invention, this problem is primarily resolved by using an arc discharge for heating a predetermined length of the yarn as the same is advanced longitudinally. According to the present invention, the yarn may be passed through a discharge distance or arc length which may or may not extend transversely with respect to the direction of movement of the yarn. Advantageously, the electrodes may be arranged in pairs at a certain distance from each other in the immediate vicinity of the yarn or in contact therewith so that the arc directly follows the yarn over a certain distance, or passes through the same, thus to heat the yarn to a desired temperature. To achieve this, the yarn may first be treated with any conducting material, or it may be moistened with conductive liquid by a moistening apparatus arranged in advance of the electrodes. It is also possible to apply textile finishing agents within the arc.
Preferably, the moistening device may be a fog chamber as this assures absolutely regular humidification of the yarn. In a simple way, the liquid may, however, also be applied by a humidified roller, a wick or by capillary tubes; and a regular shape for the arc can be obtained by using electrodes in the form of rings surrounding the yarn.
There has thus been outlined rather broadly the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter and which will form the subject of the claims appended hereto. Those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures for carrying out the several purposes of the invention. It is important, therefore, that the claims be regarded as including such equivalent constructions as do not depart from the spirit and scope of the invention.
Specific embodiments of the invention have been chosen for purposes of illustration and description, and are shown in the accompanying drawings, forming a part of the specification wherein:
The sole FIGURE of the drawings shows, schematically, a delivery bobbin 1 from which the yarn is extracted by over guiding rollers 3 and 4 by means of a delivery device 5 in the direction of the arrow.
The electrodes 6 and 7 are supplied with electric current by a high voltage source 8.
The yarn 2 is moistened by wick 9 of the moistening device 10 so that the arc discharge passes along and through the yarn 2 between the electrodes 6 and 7.
An important application of the apparatus of the present invention is its application in the texturing of yarns of indefinite length as well as of bundles of filaments consisting of thermoplastic synthetic material, particularly of polyamides and polyesters, by falsetwisting and heat-setting the false-twist. Using an arc discharge distance makes possible intense heat-setting over a relatively short distance, the space taken by the heating device being thereby substantially reduced which is considerably important in false-twist texturing machines having a great number of treatment stations.
According to a variation of the apparatus of the present invention, the same may comprise electromagnetic or electronic control means for interrupting the arc discharge in regular or irregular intervals. Using this variation on apparatus for texturing textile yarns, it is possible to obtain regular or irregular interruption of the heat-setting operation, whereby so-called fancy textured yarns are obtained.
I believe that the construction and operation of my novel yarn heating device will now be understood, and that its advantages will be fully appreciated by those persons skilled in the art.
I claim:
1. Apparatus for heating yarns of indefinite continuous length, characterized by means for advancing the yarn longitudinally, and means for providing an arc discharge adjacent the path of the yarn.
2. Apparatus according to claim 1, wherein the arc discharge is provided in advance of false-twist means whereby the yarn is heat-set in twisted condition.
3. Apparatus according to claim 1, characterized in that at least one pair of electrodes is arranged immediately adjacent the yarn, that the arc extends in parallel with the yarn.
4. Apparatus according to claim 3, characterized in that the electrodes are so spaced from the yarn that the arc passes lengthwise through the yarn.
5. Apparatus according to claim 3, characterized in that in the distance through which the yarn passes, and in advance of the electrodes, means are provided for moistening the yarn with a conductive liquid.
6. Apparatus according to claim 5, characterized in that the moistening means is a fog chamber.
7. Apparatus according to claim 5, characterized in that the moistening means is a rotating roller in contact with the yarn and which yields a conductive liquid.
8. Apparatus according to claim 5, characterized in that the moistening device comprises a wick transferring the liquid into contact with the yarn.
9. Apparatus according to claim 5, characterized in that the moistening device comprises capillaries in contact with the yarn for transferring the liquid to the yarn.
10. Apparatus according to claim 3, characterized in that the electrodes are in the form of rings through which the yarn is passed.
11. Apparatus according to claim 1, characterized in that the means for providing the arc discharge are so arranged that the arc extends transversely with respect to the yarn movement.
12. Apparatus according to claim 1, characterized in that control means are provided for interrupting the arc discharge in regular or irregular intervals.
15. Method according to claim 13, wherein the arc is disposed parallel to and along a length of the advancing yarn.
16. Method according to claim 13, wherein the yarn is treated with a conductive fluid before the arc is applied.

Claims (16)

1. Apparatus for heating yarns of indefinite continuous length, characterized by means for advancing the yarn longitudinally, and means for providing an arc discharge adjacent the path of the yarn.
2. Apparatus according to claim 1, wherein the arc discharge is provided in advance of false-twist means whereby the yarn is heat-set in twisted condition.
3. Apparatus according to claim 1, characterized in that at least one pair of electrodes is arranged immediately adjacent the yarn, that the arc extends in parallel with the yarn.
4. Apparatus according to claim 3, characterized in that the electrodes are so spaced from the yarn that the arc passes lengthwise through the yarn.
5. Apparatus according to claim 3, characterized in that in the distance through which the yarn passes, and in advance of the electrodes, means are provided for moistening the yarn with a conductive liquid.
6. Apparatus according to claim 5, characterized in that the moistening means is a fog chamber.
7. Apparatus according to claim 5, characterized in that the moistening means is a rotating roller in contact with the yarn and which yields a conductive liquid.
8. Apparatus according to claim 5, characterized in that the moistening device comprises a wick transferring the liquid into contact with the yarn.
9. Apparatus according to claim 5, characterized in that the moistening device comprises capillaries in contact with the yarn for transferring the liquid to the yarn.
10. Apparatus according to claim 3, characterized in that the electrodes are in the form of rings through which the yarn is passed.
11. Apparatus according to claim 1, characterized in that the means for providing the arc discharge are so arranged that the arc extends transversely with respect to the yarn movement.
12. Apparatus according to claim 1, characterized in that control means are provided for interrupting the arc discharge in regular or irregular intervals.
13. Method of heating yarn comprising, advancing yarn longitudinally and striking an arc in the immediate vicinity of the yarn so as to heat same by the arc to a desired temperature.
14. Method according to claim 13, wherein the arc passes transversely of the yarn and the yarn passes through the arc.
15. Method according to claim 13, wherein the arc is disposed parallel to and along a length of the advancing yarn.
16. Method according to claim 13, wherein the yarn is treated with a conductive fluid before the arc is applied.
US00290849A 1971-09-21 1972-09-21 Apparatus for heating of endless filaments, yarns or the like Expired - Lifetime US3791120A (en)

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CH1374471A CH539147A (en) 1971-09-21 1971-09-21 Device for heating endless threads, yarns or ribbons

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DE (1) DE2242166A1 (en)
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GB (1) GB1377819A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115985A (en) * 1976-07-12 1978-09-26 Asa S.A. Method of apparatus for the thermal treatment of textiles articles
US4192048A (en) * 1976-12-02 1980-03-11 Pierre Wahl Texturizing a textile product
US4207730A (en) * 1977-12-30 1980-06-17 Palitex Project Company Gmbh Process and apparatus for bulking textile yarns

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1557730A (en) * 1921-02-15 1925-10-20 Products Prot Corp Method of producing a fibrous mass impregnated with a phenolic condensation product
US2956393A (en) * 1953-09-19 1960-10-18 Ubbelohde Leo Method for crimping swellable filamentary materials
US2993333A (en) * 1961-07-25 Production of twist lively thread
US3093955A (en) * 1958-06-28 1963-06-18 Bemberg Spa Device for the twisting and heat setting of threads or yarns of synthetic material, constituted preferably of numerous elementary filaments or fibers
US3343207A (en) * 1963-10-14 1967-09-26 Monsanto Co Novelty yarn apparatus
US3400528A (en) * 1967-03-25 1968-09-10 Palitex Project Co Gmbh Method and apparatus for post-treating of yarn on two-for-one twisting machines
US3483374A (en) * 1966-01-24 1969-12-09 Alusuisse Apparatus for the surface treatment of workpieces by electrical discharges
US3732395A (en) * 1971-06-22 1973-05-08 Du Pont Yarn heater

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2993333A (en) * 1961-07-25 Production of twist lively thread
US1557730A (en) * 1921-02-15 1925-10-20 Products Prot Corp Method of producing a fibrous mass impregnated with a phenolic condensation product
US2956393A (en) * 1953-09-19 1960-10-18 Ubbelohde Leo Method for crimping swellable filamentary materials
US3093955A (en) * 1958-06-28 1963-06-18 Bemberg Spa Device for the twisting and heat setting of threads or yarns of synthetic material, constituted preferably of numerous elementary filaments or fibers
US3343207A (en) * 1963-10-14 1967-09-26 Monsanto Co Novelty yarn apparatus
US3483374A (en) * 1966-01-24 1969-12-09 Alusuisse Apparatus for the surface treatment of workpieces by electrical discharges
US3400528A (en) * 1967-03-25 1968-09-10 Palitex Project Co Gmbh Method and apparatus for post-treating of yarn on two-for-one twisting machines
US3732395A (en) * 1971-06-22 1973-05-08 Du Pont Yarn heater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115985A (en) * 1976-07-12 1978-09-26 Asa S.A. Method of apparatus for the thermal treatment of textiles articles
US4192048A (en) * 1976-12-02 1980-03-11 Pierre Wahl Texturizing a textile product
US4207730A (en) * 1977-12-30 1980-06-17 Palitex Project Company Gmbh Process and apparatus for bulking textile yarns

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DE2242166A1 (en) 1973-03-29
GB1377819A (en) 1974-12-18
FR2154112A5 (en) 1973-05-04
CH539147A (en) 1973-07-15

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