US3192597A - Yarn texturing apparatus and method - Google Patents

Yarn texturing apparatus and method Download PDF

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Publication number
US3192597A
US3192597A US303504A US30350463A US3192597A US 3192597 A US3192597 A US 3192597A US 303504 A US303504 A US 303504A US 30350463 A US30350463 A US 30350463A US 3192597 A US3192597 A US 3192597A
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Prior art keywords
yarn
gears
texturing
meshed
filament
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US303504A
Inventor
Euell K Mcintosh
William H Hills
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Monsanto Co
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Monsanto Co
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Publication date
Priority to NL126928D priority Critical patent/NL126928C/xx
Application filed by Monsanto Co filed Critical Monsanto Co
Priority to US303504A priority patent/US3192597A/en
Priority to NO154426A priority patent/NO117378B/no
Priority to CH1082464A priority patent/CH433579A/en
Priority to DE19641435581 priority patent/DE1435581A1/en
Priority to DK412264AA priority patent/DK113863B/en
Priority to SE10072/64A priority patent/SE324030B/xx
Priority to NL6409650A priority patent/NL6409650A/xx
Priority to LU46803D priority patent/LU46803A1/xx
Priority to AT719564A priority patent/AT253106B/en
Priority to JP39046511A priority patent/JPS5026663B1/ja
Priority to ES0303339A priority patent/ES303339A1/en
Priority to BE652156A priority patent/BE652156A/xx
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
    • 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
    • D02G1/14—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using grooved rollers or gear-wheel-type members
    • 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
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/225—Mechanical characteristics of stretching apparatus
    • D02J1/226—Surface characteristics of guiding or stretching organs

Definitions

  • the present invention relates to yarn texturing wherein yarn is provided with latent crimps by passing through meshed gears, and more particularly to such texturing which is adapted for texturing textile denier yarns.
  • thermoplastic yarns In a known method and apparatus for texturing thermoplastic yarns, as typified by Bromley et al. US. Patent 3,024,516, yarn is simultaneously drawn from a draw pin and crimped by multiple passes through a set of meshed gears in cooperation with a separator roll.
  • the yarns typically processed according to the Bromley et a1.
  • apparatus ranged from nearly a thousand to several thousand total denier.
  • the individual filament deniers were typically sixty denier per filament (DPF) before texturing, and about twenty DPF after texturing. Due to the heavy denier yarns processed in the Bromley et a1. apparatus, several passes of the yarn around the gears were necessary to get enough traction to draw yarn. Since the individual filaments had a large denier, relatively coarse pitched gears and comparatively wide clearance between the gears was necessary, which increased the need for several passes through the gears.
  • DPF sixty denier per filament
  • a primary object of the invention is to provide a method and apparatus for texturing yarn.
  • a further object is to provide such method and apparatus wherein the yarn is textured by a single pass through meshed gears.
  • a further object is to provide such a method and apparatus wherein the geometry is arranged so as to require a minimum number of parts and a simple stringup.
  • the invention accordingly comprises the several steps and the relation of one or more of such steps with respect to each of the others, and the apparatus embodying features of construction, combinations of elements and arr-angements of parts which are adapted to effect such steps, all as exemplified in the following detailed disclosure, and the scope of the invention will be indicated in the claims.
  • FIGURES 1 and 2 are fragmentary schematic perspective views of apparatus according to the invention.
  • yarn 20 from a spin cake 22 or other convenient source is fed by driven nip rolls 24 to a brake or other snubbing device 26, illustrated United States Patent 3,192,597 Patented July 6, 1-965 as an electrically heated hot pin.
  • a conventional guide 27 may be provided to guide yarn 20 to nip rolls 24.
  • Yarn 26 then passes through meshed gears 28 and 30, which are positively driven so as to stretch or draw the yarn in the region between pin 26 and the gears.
  • Yarn 20 then passes through a pigtail guide 32 to a suitable windup mechanism 34, which may be of any desired type.
  • the axis of pin 26 is skewed with respect to the axes of gears 28 and 3t
  • pin 26 lies in the plane in which the gears rotate, and is perpendicular to the path of yarn 20.
  • the filaments of yarn 20 during passage'around the draw pin are formed into a filament sheet, the transverse dimension of which is perpendicular to the axes of the gears. Passage of the yarn as a round bundle or as a filament sheet thus oriented directly through the meshed portion of the gears could result in uneven running and breaking of the filaments by the gear teeth since the gears are closely meshed.
  • gears 28 and 36 are mounted so that the axis along which the yarn travels between pin 26 and the gears forms an acute angle with a perpendicular line between the gear axes, causing yarn 26 to Wrap around part of the periphery of one of the gears in an arc extending over several degrees before contacting the remaining gear.
  • draw pin 26 is so mounted that a line perpendicular to the axes ofgears 28 and 39 forms an angle greater than 10 with the axis of draw pin 26. Since the yarn passes through the meshed portion as a filament sheet, the number of gear teeth per inch of gear circumference may be increased and the clearance between the gears may be reduced. These factors produce suificient traction to draw and crimp the yarn in a single pass through the gears without danger of cutting the filaments.
  • the disclosed apparatus is simple, and provides an economical and reliable process for producing textured yarns.
  • Apparatus for bulking a muiti-filament yarn comprising in combination:
  • said snubbing mechanism being oriented with respect to said gears so that said yarn wraps around part of the periphery of a first of said gears and forms into a substantially flat filament sheet on said periphery before entering into the region where said gears mesh,
  • Apparatus for bulking a multi-iilament yarn comprising in combination:
  • said draw pin being skewed with respect to the axis of said gears sufiiciently .to positively locate the said yarn, and being mounted with respect to said gears so that said yarn wraps around part of the periphery of a first of said gears and forms into a substantially fiat filament sheet on said periphery before entering into the region where said gears mesh.
  • a method for texturing yarn in a single pass through a pair of meshed crimping gears comprising in combination:
  • Yarn treating apparatus comprising in combination:

Description

y 1965 E. K. MCINTOSH ETAL 3,
YARN TEXTURING APPARATUS AND METHOD Filed Aug. 21, 1965 INVENTORS EUELL K. McINTOSH WILLIAM H. HILLS ATTOR Y 3,192,597 YARN TEXTURING APPARATUS AND METHGE Eueil K. McIntosh and Willim H. Hills, Pensacola, Fla, assignors to Monsanto Company, a corporation of Delaware Filed Aug. 21, 1963, Ser. No. 303,504 7 Claims. (Cl. 28-1) The present invention relates to yarn texturing wherein yarn is provided with latent crimps by passing through meshed gears, and more particularly to such texturing which is adapted for texturing textile denier yarns.
In a known method and apparatus for texturing thermoplastic yarns, as typified by Bromley et al. US. Patent 3,024,516, yarn is simultaneously drawn from a draw pin and crimped by multiple passes through a set of meshed gears in cooperation with a separator roll. The yarns typically processed according to the Bromley et a1. apparatus ranged from nearly a thousand to several thousand total denier. The individual filament deniers were typically sixty denier per filament (DPF) before texturing, and about twenty DPF after texturing. Due to the heavy denier yarns processed in the Bromley et a1. apparatus, several passes of the yarn around the gears were necessary to get enough traction to draw yarn. Since the individual filaments had a large denier, relatively coarse pitched gears and comparatively wide clearance between the gears was necessary, which increased the need for several passes through the gears.
When textile denier yarns (those having total denier ranging up to a few hundred and filaments with about 1520 DPF before texturing and about 2-7 DPF after texturing) are gear textured, it has been found to be possible to texture the yarn in a single pass through the gears, and thus to considerably simplify the necessary apparatus and the yarn stringup. According to the present invention, gears having a relatively large number of teeth per inch are used. These gears are closely meshed in order to provide adequate crimping action and enough traction to draw the yarn. The yarn is formed into a filament sheet just prior to its passage through the meshed portion of the gears in order to avoid uneven running and breaking of filaments by the gears. These results are achieved by the apparatus to be described.
Accordingly, a primary object of the invention is to provide a method and apparatus for texturing yarn.
A further object is to provide such method and apparatus wherein the yarn is textured by a single pass through meshed gears.
A further object is to provide such a method and apparatus wherein the geometry is arranged so as to require a minimum number of parts and a simple stringup.
Other objects of the invention will in part be obvious and will in part appear hereinafter.
The invention accordingly comprises the several steps and the relation of one or more of such steps with respect to each of the others, and the apparatus embodying features of construction, combinations of elements and arr-angements of parts which are adapted to effect such steps, all as exemplified in the following detailed disclosure, and the scope of the invention will be indicated in the claims.
For a more complete understanding of the nature and objects of the invention, reference should be made to the following detailed description taken in connection with the accompanying drawing, in which FIGURES 1 and 2 are fragmentary schematic perspective views of apparatus according to the invention.
Referring now to FIGURE 1, yarn 20 from a spin cake 22 or other convenient source is fed by driven nip rolls 24 to a brake or other snubbing device 26, illustrated United States Patent 3,192,597 Patented July 6, 1-965 as an electrically heated hot pin. A conventional guide 27 may be provided to guide yarn 20 to nip rolls 24. Yarn 26 then passes through meshed gears 28 and 30, which are positively driven so as to stretch or draw the yarn in the region between pin 26 and the gears. Yarn 20 then passes through a pigtail guide 32 to a suitable windup mechanism 34, which may be of any desired type.
In order to positively locate the point of contact between yarn 29 and gears 28 and 30 while reducing the number of auxiliary guides to the minimum, the axis of pin 26 is skewed with respect to the axes of gears 28 and 3t Advantageously pin 26 lies in the plane in which the gears rotate, and is perpendicular to the path of yarn 20.
The filaments of yarn 20 during passage'around the draw pin are formed into a filament sheet, the transverse dimension of which is perpendicular to the axes of the gears. Passage of the yarn as a round bundle or as a filament sheet thus oriented directly through the meshed portion of the gears could result in uneven running and breaking of the filaments by the gear teeth since the gears are closely meshed. According to the present invention, gears 28 and 36 are mounted so that the axis along which the yarn travels between pin 26 and the gears forms an acute angle with a perpendicular line between the gear axes, causing yarn 26 to Wrap around part of the periphery of one of the gears in an arc extending over several degrees before contacting the remaining gear. This rearranges the filaments into a filament sheet spread on the Surface of the first gear contacted and having its transverse dimension parallel to the gear axes, as best illustrated in FIGURE 2, so that the yarn may pass through the meshed portion of the gears without breakage. Advantageously, draw pin 26 is so mounted that a line perpendicular to the axes ofgears 28 and 39 forms an angle greater than 10 with the axis of draw pin 26. Since the yarn passes through the meshed portion as a filament sheet, the number of gear teeth per inch of gear circumference may be increased and the clearance between the gears may be reduced. These factors produce suificient traction to draw and crimp the yarn in a single pass through the gears without danger of cutting the filaments.
In a specific example for texturing yarn of nylon 66 having thirteen filaments and forty total denier after texturing, the angle between the yarn axis and a perpendicular line between the gear axes was 45 Gears 28 and 39 had diameters of 1% inches and 2 /8 inches, respectively, and each gear had 64 teeth per inch of diameter. Draw pin 26 was electrically heated to about C., and the apparatus was designed to provide a draw ratio of between 2.25 and 2.50. The yarn ran smoothly through the apparatus, and possessed excellent bulking characteristics.
It may be seen from the above written description and the accompanying drawing that there has been disclosed an efiicient and simple method and apparatus for texturing yarns. By wrapping the yarn about a portion of the periphery of one of the gears before the yarn enters the meshed portion of the gears, the yarn is formed into a filament sheet properly oriented to run smoothly through the gears. This permits a greater number of gear teeth per peripheral inch, with closer spacing between the meshed teeth than would otherwise be possible, and in turn permits texturing and drawing the yarn in a single pass through the gears. As an added feature of the invention, orienting the draw pin 26 to be skewed with respect to the axes of gears 28 and 3t) positively locates the yarn on the gears, preventing the yarn from Wandering off the gears. Since the yarn can be drawn and textured by a area-ear :3 single pass through the gears, it is possible to eliminate the separator roll which would be required with multiple passes through the gears. The disclosed apparatus is simple, and provides an economical and reliable process for producing textured yarns.
It will thus be seen that the objects set forth above,
among those made apparent from the preceding description, are efficiently attained and, since certain changes may be made in carrying out the above process and in the construction set forth without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.
It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.
Having described our invention, what we claim as new and desire to secure by Letters Patent is:
1. Apparatus for bulking a muiti-filament yarn, comprising in combination:
(a) a pair of driven meshed yarn-crimping gears,
(b) a source of multi-filament yarn to be bulked, said source supplying yarn to be passed through said gears,
(c) a snubbing mechanism positioned between said source and said gears for exerting a redeterrnined braking effort on said yarn whereby said yarn is drawn in the region between said gears and said snubbing mechanism,
(d) said snubbing mechanism being oriented with respect to said gears so that said yarn wraps around part of the periphery of a first of said gears and forms into a substantially flat filament sheet on said periphery before entering into the region where said gears mesh,
(e) and yarn takeup means for collecting said yarn after a single pass through said gears.
2. The apparatus defined in claim 1 wherein said snubbing mechanism has an axis skewed with respect to the axes of said gears sufiiciently to positively locate the point at which said yarn contacts said gears.
3. The apparatus defined in claim 1, wherein the braking eiiort exerted by said snubbing mechanism and the closeness of the meshing of said gears are proportioned to draw said yarn to between 2.25 and 2.50 times its original length.
4. Apparatus for bulking a multi-iilament yarn, comprising in combination:
(a) a pair of driven meshed yarn-crimping gears,
(b) a source of multihlament yarn to be bulked, said source supplying yarn to be passed through said gears,
(c) and a heated draw pin mounted between said source and said gears,
(d) said yarn being wrapped about said draw pin whereby said yarn is drawn in the region between said gears and said draw pin.
(e) said draw pin being skewed with respect to the axis of said gears sufiiciently .to positively locate the said yarn, and being mounted with respect to said gears so that said yarn wraps around part of the periphery of a first of said gears and forms into a substantially fiat filament sheet on said periphery before entering into the region where said gears mesh.
5. A method for texturing yarn in a single pass through a pair of meshed crimping gears, comprising in combination:
(a) drawing said yarn from a heated draw pin having its axis skewed with respect to the axes of said gears,
(b) and passing said yarn around part of the periphery of a first of said gears so that said yarn forms a filament sheet on said periphery before entering into the region where said gears mesh.
6. Yarn treating apparatus comprising in combination:
(a) a pair of meshed yarn-crimping gears rotating in a plane, (b) a h ated draw pin having an axis positioned in said plane,
(0) a line in said plane joining the aXes of said crimping gears forming an angle with said draw pin axis greater than 10.
7. The apparatus defined in claim 4, further comprising yarn takeup means for collecting said yarn after a single pass through said gears.
References Cited by the Examiner UNITED STATES PATENTS 2,983,799 6/61 Atwell 28-1 3,009,308 11/61 Bromley et al. 28-713 3,024,517 3/62 Bromley et al. 28-1 3,041,706 7/62 Bromley et al. 28-72 3,116,531 1/64 Hills et al. 28-1 3,137,911 6/64 Bromley 28-1 FOREIGN PATENTS 669,049 8/63 Canada.
DONALD W. PARKER, Primary Examiner.

Claims (1)

1. APPARATUS FOR BULKING A MULTI-FILAMENT YARN, COMPRISING COMBINATION: (A) A PAIR OF DRIVEN MESHED YARN-CRIMPING GEARS, (B) A SOURCE OF MULTI-FILAMENT YARN TO BE BULKED, SAID SOURCE SUPPLYING YARN TO BE PASSED THROUGH SAID GEARS, (C) A SNUBBING MECHANISM POSITIONED BETWEEN SAID SOURCE AND SAID GEARS FOR EXERTING A PREDETERMINED BRAKING EFFORT ON SAID YARN WHEREBY SAID YARN IS DRAWN IN THE REGION BETWEEN SAID GEARS AND SAID SNUBBING MECHANISM, (D) SAID SNUBBING MECHANISM BEING ORIENTED WITH RESPECT TO SAID GEARS SO THAT SAID YARN WRAPS AROUND PARTS OF THE PERIPHERY OF A FIRST OF SAID GEARS AND FORMS INTO A SUBSTANTIALLY FLAT FILAMENT SHEET ON SAID
US303504A 1963-08-21 1963-08-21 Yarn texturing apparatus and method Expired - Lifetime US3192597A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
NL126928D NL126928C (en) 1963-08-21
US303504A US3192597A (en) 1963-08-21 1963-08-21 Yarn texturing apparatus and method
NO154426A NO117378B (en) 1963-08-21 1964-08-18
DE19641435581 DE1435581A1 (en) 1963-08-21 1964-08-19 Method and apparatus for bulking a multifilament yarn
CH1082464A CH433579A (en) 1963-08-21 1964-08-19 Device for bulging a multifilament yarn
SE10072/64A SE324030B (en) 1963-08-21 1964-08-20
DK412264AA DK113863B (en) 1963-08-21 1964-08-20 Method for texturing thermoplastic yarns and apparatus for performing this method.
NL6409650A NL6409650A (en) 1963-08-21 1964-08-20
LU46803D LU46803A1 (en) 1963-08-21 1964-08-20
AT719564A AT253106B (en) 1963-08-21 1964-08-20 Method and apparatus for crimping synthetic thermoplastic filaments of multiple filaments
JP39046511A JPS5026663B1 (en) 1963-08-21 1964-08-21
ES0303339A ES303339A1 (en) 1963-08-21 1964-08-21 Method and apparatus for structuring a thread of multiple filaments. (Machine-translation by Google Translate, not legally binding)
BE652156A BE652156A (en) 1963-08-21 1964-08-21

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US303504A US3192597A (en) 1963-08-21 1963-08-21 Yarn texturing apparatus and method

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JP (1) JPS5026663B1 (en)
AT (1) AT253106B (en)
BE (1) BE652156A (en)
CH (1) CH433579A (en)
DE (1) DE1435581A1 (en)
DK (1) DK113863B (en)
ES (1) ES303339A1 (en)
LU (1) LU46803A1 (en)
NL (2) NL6409650A (en)
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SE (1) SE324030B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293843A (en) * 1963-02-02 1966-12-27 British Nylon Spinners Ltd Drawing and crimping synthetic polymer filaments
US3462811A (en) * 1965-08-06 1969-08-26 Ici Ltd Method and apparatus for crimping yarn
US3636600A (en) * 1967-08-04 1972-01-25 American Enka Corp Apparatus for crimping and drawing yarn
US3813740A (en) * 1970-03-25 1974-06-04 Akzona Inc Tow guide for stuffer box crimping
US5447100A (en) * 1991-02-08 1995-09-05 United States Surgical Corporation Apparatus for calendering sutures in orthogonal directions

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS526581U (en) * 1975-07-01 1977-01-18

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988799A (en) * 1956-09-24 1961-06-20 Burlington Industries Inc Process for treating yarns, filaments and fibers
US3009308A (en) * 1960-03-10 1961-11-21 Chemstrand Corp Drawtwisting machinery
US3024517A (en) * 1959-05-18 1962-03-13 Chemstrand Corp Method of treating filament yarn
US3041706A (en) * 1960-11-17 1962-07-03 Monsanto Chemicals Apparatus for processing cold-drawable textile filaments
CA669049A (en) * 1963-08-20 E. Bromley James Crimping by irregular inter-denticulation
US3116531A (en) * 1960-11-17 1964-01-07 Monsanto Chemicals Yarn crimping apparatus
US3137911A (en) * 1961-01-03 1964-06-23 Monsanto Co Apparatus for treating filament yarn

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA669049A (en) * 1963-08-20 E. Bromley James Crimping by irregular inter-denticulation
US2988799A (en) * 1956-09-24 1961-06-20 Burlington Industries Inc Process for treating yarns, filaments and fibers
US3024517A (en) * 1959-05-18 1962-03-13 Chemstrand Corp Method of treating filament yarn
US3009308A (en) * 1960-03-10 1961-11-21 Chemstrand Corp Drawtwisting machinery
US3041706A (en) * 1960-11-17 1962-07-03 Monsanto Chemicals Apparatus for processing cold-drawable textile filaments
US3116531A (en) * 1960-11-17 1964-01-07 Monsanto Chemicals Yarn crimping apparatus
US3137911A (en) * 1961-01-03 1964-06-23 Monsanto Co Apparatus for treating filament yarn

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293843A (en) * 1963-02-02 1966-12-27 British Nylon Spinners Ltd Drawing and crimping synthetic polymer filaments
US3462811A (en) * 1965-08-06 1969-08-26 Ici Ltd Method and apparatus for crimping yarn
US3636600A (en) * 1967-08-04 1972-01-25 American Enka Corp Apparatus for crimping and drawing yarn
US3813740A (en) * 1970-03-25 1974-06-04 Akzona Inc Tow guide for stuffer box crimping
US5447100A (en) * 1991-02-08 1995-09-05 United States Surgical Corporation Apparatus for calendering sutures in orthogonal directions
US5540773A (en) * 1991-02-08 1996-07-30 United States Surgical Corporation Apparatus for calendering and coating/filling sutures

Also Published As

Publication number Publication date
LU46803A1 (en) 1965-02-20
DE1435581A1 (en) 1969-01-23
SE324030B (en) 1970-05-19
NL6409650A (en) 1965-02-22
DK113863B (en) 1969-05-05
ES303339A1 (en) 1965-03-16
NO117378B (en) 1969-08-04
AT253106B (en) 1967-03-28
CH433579A (en) 1967-04-15
JPS5026663B1 (en) 1975-09-02
BE652156A (en) 1965-02-22
NL126928C (en)

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