US2997771A - Apparatus for the production of bulky yarns - Google Patents

Apparatus for the production of bulky yarns Download PDF

Info

Publication number
US2997771A
US2997771A US753714A US75371458A US2997771A US 2997771 A US2997771 A US 2997771A US 753714 A US753714 A US 753714A US 75371458 A US75371458 A US 75371458A US 2997771 A US2997771 A US 2997771A
Authority
US
United States
Prior art keywords
yarn
tube
jet
exit
entrance
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
US753714A
Inventor
Martyn Harold Lewis
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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 Courtaulds PLC filed Critical Courtaulds PLC
Application granted granted Critical
Publication of US2997771A publication Critical patent/US2997771A/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
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D02G1/161—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam yarn crimping air jets
    • 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
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/04—Supporting filaments or the like during their treatment
    • D01D10/0436—Supporting filaments or the like during their treatment while in continuous movement
    • D01D10/0481—Supporting filaments or the like during their treatment while in continuous movement the filaments passing through a tube

Definitions

  • a process has recently been developed, as described for example in United States patent specification No. 2,783,- 609 and British patent specification No. 762,630 for making bulky yarns by passing a bundle of continuous filaments through a turbulent zone produced, for example by a high velocity jet of air, to cause the filaments to form loops and convolutions at random intervals.
  • Known constructions of air jets for carrying out this process have been found to give variable yarns even after standardization of the equipment, and jets which give satisfactory products when first used, tend to deteriorate with use and give inferior yarns.
  • the object of this invention is an improved construction of jet for making bulky yarns.
  • the new jet is very effective, of simple construction and has a long useful life.
  • the jet of the present invention comprises a hollow body portion having an inlet for air under pressure, a yarn exit tube leading out of said body portion, a yarn entrance tube coaxial with the exit tube with its end extruding slightly into the exit tube leaving an annular passage for air between them, and the wall of the exit tube has in the vicinity of the end of the entrance tube a hole communicating with the interior of the hollow body portion.
  • the air inlet is adapted to direct entering air towards the overlapping ends of the yarn entrance and exit tubes in a direction substantially at right angles to the common axis of said tubes.
  • the entrance and exit tubes are advantageously constructed of narrow tubing, that is to say with an internal diameter not exceeding 0.1 of an inch; the so-called hypodermic tubing is suitable for making both tubes.
  • the internal diameter of the inlet tube should be sufficient to permit easy passage of the yarn to be treated.
  • the overlap of the two tubes is preferably of the order of one tenth of an inch.
  • the overlap may be of the order of one internal diameter of the exit tube.
  • the diameter of the hole in the wall of the exit tube is conveniently about 0.02 to 0.05 of an inch.
  • the end of the exit tube where the filaments leave the jet is preferably flared to assist the bulking of the filaments.
  • Jets constructed in accordance with this invention are self-threading as the jet of air causes the filaments to be drawn into the entrance and exit tubes by suction.
  • the jet of the present invention may be employed in conjunction with means for feeding a yarn to the entrance tube of the jet at a controlled linear speed and means for withdrawing the yarn from the exit tube at a linear speed less than the inlet feed speed.
  • the yarn may be forwarded to the jet by feed rollers drawing the yarn overend from a stationary package and withdrawn from the jet and simultaneously wound by a constant speed winding device at a rate less than the feed rate, for example by to percent.
  • Yarns to be treated in the new jet preferably contain twist.
  • the twist may be of the order of 12 turns per inch. If desired yarns treated in the jet may subsequently be twisted, for example in the course of collection by winding.
  • FIGURE 1 shows in enlarged cross section one form of jet in accordance with the invention
  • FIGURE 2 shows an assembly of apparatus including the jet, means for supplying yarn to the jet, and means for collecting the treated yarn.
  • the jet comprises a hollow body portion 8 having a yarn entrance tube 1 and a coaxial exit tube 2, the tube 1 projecting slightly inside tube 2 to leave an annular space 3.
  • an air inlet passage 4 for introducing compressed air.
  • the tube 2 has a hole 5 in its wall connecting the interior of the hollow body portion 8 with the interior of the tube 2.
  • the end 6 of the block 7 surrounding partof the tube 2 is flared to assist in the bulking of the filaments.
  • Suitable dimensions for a jet as shown in the drawing are as follows:
  • the jet may be used with air supplied at 45 cu. ft./ hr. at 30 lb./sq. inch.
  • the assembly of apparatus for processing a yarn comprises a jet, generally indicated at 9, of the kind shown in FIGURE 1.
  • a set of feed rollers is provided including a driven roller 10 and freely rotatable rollers 11 and 12 resting thereon.
  • a yarn 13 is drawn from a package 14 via guides 15 and 16 and forward it to the inlet tube 1 of the jet 9.
  • the yarn is withdrawn from the jet 9 and wound into a package 17 which is surface driven by a roller 18, being traversed by the traverse guide 19.
  • the rollers 10 and 18 are driven in synchronism by means not shown, the peripheral speed of the roller 18 being less than that of roller 10.
  • a jet suitable for the production of a bulky yarn from a continuous filament yarn comprising a hollow body portion having an inlet for air under pressure, a yarn exit tube leading out of said body portion, a yarn entrance tube coaxial with the exit tube with its end extending slightly into the exit tube leaving an annular passage for air between them, and the wall of the exit tube having in the immediate vicinity of the end of the entrance tube a single radial hole communicating with the interior of the hollow body portion, the air inlet being adapted to direct entering air towards the overlapping ends of the yarn entrance and exit tubes in a direction substantially at right angles to the common axis of the said tubes.
  • Apparatus suitable for the production of a bulky yarn from a continuous filament yarn said apparatus including a jet, said jet comprising a hollow body portion having an inlet for air under pressure, a yarn exit tube leading out of said body portion, a yarn entrance tube coaxial with the exit tube with its end extending slightly into the exit tube leaving an annular passage for air between them, the wall of the exit tube in the immediate vicinity of the end of the entrance tube having a single radial hole communicating with the interior of the hollow body portion, the air inlet being adapted to direct entering air towards the overlapping ends of the yarn entrance and exit tubes in a direction substantially at right angles to the common axis of the said tubes, means for feeding a yarn to the entrance tube of said jet at a controlled linear speed, and means for withdrawing the yarn from the exit speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Description

Aug. 29, 1961 H. L. MARTYN 2,997,771
APPARATUS FOR THE PRODUCTION OF BULKY YARNS Filed Aug. 7, 1958 FlG.l
//7 van for Ham/0 L eW/s Many/7 By h/s of/omeys Z mm/M United States Patent 2,997,771 APPARATUS FOR THE PRODUCTION OF BULKY YARNS Harold Lewis Martyn, Allesley, Coventry, England, assignor to Courtaulds Limited, London, England, a British company Filed Aug. 7, 1958, Ser. No. 753,714 Claims priority, application Great Britain Aug. 30, 1957 5 Claims. (Cl. 28-1) This invention relates to apparatus for the production of bulky yarns.
A process has recently been developed, as described for example in United States patent specification No. 2,783,- 609 and British patent specification No. 762,630 for making bulky yarns by passing a bundle of continuous filaments through a turbulent zone produced, for example by a high velocity jet of air, to cause the filaments to form loops and convolutions at random intervals. Known constructions of air jets for carrying out this process have been found to give variable yarns even after standardization of the equipment, and jets which give satisfactory products when first used, tend to deteriorate with use and give inferior yarns.
The object of this invention is an improved construction of jet for making bulky yarns. The new jet is very effective, of simple construction and has a long useful life.
The jet of the present invention comprises a hollow body portion having an inlet for air under pressure, a yarn exit tube leading out of said body portion, a yarn entrance tube coaxial with the exit tube with its end extruding slightly into the exit tube leaving an annular passage for air between them, and the wall of the exit tube has in the vicinity of the end of the entrance tube a hole communicating with the interior of the hollow body portion. Preferably the air inlet is adapted to direct entering air towards the overlapping ends of the yarn entrance and exit tubes in a direction substantially at right angles to the common axis of said tubes.
The entrance and exit tubes are advantageously constructed of narrow tubing, that is to say with an internal diameter not exceeding 0.1 of an inch; the so-called hypodermic tubing is suitable for making both tubes. The internal diameter of the inlet tube should be sufficient to permit easy passage of the yarn to be treated.
Using such tubing, the overlap of the two tubes is preferably of the order of one tenth of an inch. In general the overlap may be of the order of one internal diameter of the exit tube. The diameter of the hole in the wall of the exit tube is conveniently about 0.02 to 0.05 of an inch.
The end of the exit tube where the filaments leave the jet is preferably flared to assist the bulking of the filaments.
Jets constructed in accordance with this invention are self-threading as the jet of air causes the filaments to be drawn into the entrance and exit tubes by suction.
The jet of the present invention may be employed in conjunction with means for feeding a yarn to the entrance tube of the jet at a controlled linear speed and means for withdrawing the yarn from the exit tube at a linear speed less than the inlet feed speed. Thus the yarn may be forwarded to the jet by feed rollers drawing the yarn overend from a stationary package and withdrawn from the jet and simultaneously wound by a constant speed winding device at a rate less than the feed rate, for example by to percent.
Yarns to be treated in the new jet preferably contain twist. For example, in the case of a yarn of 70 denier, the twist may be of the order of 12 turns per inch. If desired yarns treated in the jet may subsequently be twisted, for example in the course of collection by winding.
ice
The invention will now be more specifically described with reference to the accompanying drawings in which:
FIGURE 1 shows in enlarged cross section one form of jet in accordance with the invention;
FIGURE 2 shows an assembly of apparatus including the jet, means for supplying yarn to the jet, and means for collecting the treated yarn.
Referring to FIGURE 1, the jet comprises a hollow body portion 8 having a yarn entrance tube 1 and a coaxial exit tube 2, the tube 1 projecting slightly inside tube 2 to leave an annular space 3.
At right angles to the common axis of the tubes 1 and 2 and opposite the overlapping ends of the tubes is an air inlet passage 4 for introducing compressed air. The tube 2 has a hole 5 in its wall connecting the interior of the hollow body portion 8 with the interior of the tube 2. The end 6 of the block 7 surrounding partof the tube 2 is flared to assist in the bulking of the filaments.
Suitable dimensions for a jet as shown in the drawing are as follows:
Inch
Outside diameter of entrance tube 1 0.057 Inside diameter of entrance tube 1 0.044 Inside diameter of exit tube 2 0.073 Length of overlap of tubes 1 and 2 0.1 Diameter of hole 5 0.028
The jet may be used with air supplied at 45 cu. ft./ hr. at 30 lb./sq. inch.
Referring to FIGURE 2, the assembly of apparatus for processing a yarn comprises a jet, generally indicated at 9, of the kind shown in FIGURE 1. A set of feed rollers is provided including a driven roller 10 and freely rotatable rollers 11 and 12 resting thereon. A yarn 13 is drawn from a package 14 via guides 15 and 16 and forward it to the inlet tube 1 of the jet 9. The yarn is withdrawn from the jet 9 and wound into a package 17 which is surface driven by a roller 18, being traversed by the traverse guide 19. The rollers 10 and 18 are driven in synchronism by means not shown, the peripheral speed of the roller 18 being less than that of roller 10.
What I claim is:
1. A jet suitable for the production of a bulky yarn from a continuous filament yarn, said jet comprising a hollow body portion having an inlet for air under pressure, a yarn exit tube leading out of said body portion, a yarn entrance tube coaxial with the exit tube with its end extending slightly into the exit tube leaving an annular passage for air between them, and the wall of the exit tube having in the immediate vicinity of the end of the entrance tube a single radial hole communicating with the interior of the hollow body portion, the air inlet being adapted to direct entering air towards the overlapping ends of the yarn entrance and exit tubes in a direction substantially at right angles to the common axis of the said tubes.
2. A jet according to claim 1, wherein the exit end of the exit tube terminates in an outwardly flared portion.
3. A jet according to claim 1, wherein the internal diameter of the exit tube is less than 0.1 inch.
4. A jet according to claim 3, wherein the entrance tube extends intothe exit tube by about 0.1 inch.
5. Apparatus suitable for the production of a bulky yarn from a continuous filament yarn, said apparatus including a jet, said jet comprising a hollow body portion having an inlet for air under pressure, a yarn exit tube leading out of said body portion, a yarn entrance tube coaxial with the exit tube with its end extending slightly into the exit tube leaving an annular passage for air between them, the wall of the exit tube in the immediate vicinity of the end of the entrance tube having a single radial hole communicating with the interior of the hollow body portion, the air inlet being adapted to direct entering air towards the overlapping ends of the yarn entrance and exit tubes in a direction substantially at right angles to the common axis of the said tubes, means for feeding a yarn to the entrance tube of said jet at a controlled linear speed, and means for withdrawing the yarn from the exit speed.
References Cited in the file of this patent UNITED STATES PATENTS Breen Sept. 23, 1958

Claims (1)

1. A JET SUITABLE FOR THE PRODUCTION OF A BULKY YARN FROM A CONTINUOUS FILAMENT YARN, SAID JET COMPRISING A HOLLOW BODY PORTION HAVING AN INLET FOR AIR UNDER PRESSURE, A YARN EXIT TUBE LEADING OUT OF SAID BODY PORTION, A YARN ENTRANCE TUBE COAXIAL WITH THE EXIT TUBE WITH ITS END EXTENDING SLIGHTLY INTO THE EXIT TUBE LEAVING AN ANNULAR PASSAGE FOR AIR BETWEEN THEM, AND THE WALL OF THE EXIT TUBE HAVING IN THE IMMEDIATE VICINITY OF THE END OF THE ENTRANCE TUBE A SINGLE RADIAL HOLE COMMUNICATING WITH THE INTERIOR OF THE HOLLOW BODY PORTION, THE AIR INLET BEING ADAPTED TO DIRECT ENTERING AIR TOWARDS THE OVERLAPPING ENDS OF THE YARN ENTRANCE AND EXIT TUBES IN A DIRECTION SUBSTANTIALLY AT RIGHT ANGLES TO THE COMMON AXIS OF THE SAID TUBES.
US753714A 1957-08-30 1958-08-07 Apparatus for the production of bulky yarns Expired - Lifetime US2997771A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2997771X 1957-08-30

Publications (1)

Publication Number Publication Date
US2997771A true US2997771A (en) 1961-08-29

Family

ID=10919449

Family Applications (1)

Application Number Title Priority Date Filing Date
US753714A Expired - Lifetime US2997771A (en) 1957-08-30 1958-08-07 Apparatus for the production of bulky yarns

Country Status (1)

Country Link
US (1) US2997771A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220082A (en) * 1962-03-29 1965-11-30 Eastman Kodak Co Jet apparatus for treatment of textile fibers
US3262177A (en) * 1961-11-01 1966-07-26 Owens Corning Fiberglass Corp Apparatus for producing novelty bulked yarn
US3262178A (en) * 1963-06-12 1966-07-26 Eastman Kodak Co Tow treating apparatus
US3279024A (en) * 1964-09-24 1966-10-18 Teijin Ltd Method and apparatus for making bulky continuous filament yarn
US3286321A (en) * 1963-11-22 1966-11-22 Eastman Kodak Co Method of treating multifilament yarn
US3346682A (en) * 1962-03-16 1967-10-10 Du Pont Method for making a filtering medium from plexifilamentary material
US3479707A (en) * 1967-08-02 1969-11-25 Us Textile Mach Co Jet fiber texturizer
DE1932706A1 (en) * 1968-06-28 1970-01-08 Du Pont Texturing device
US3545057A (en) * 1968-09-30 1970-12-08 Du Pont Yarn treating apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2852906A (en) * 1951-12-14 1958-09-23 Du Pont Method and apparatus for producing bulky continuous filament yarn

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2852906A (en) * 1951-12-14 1958-09-23 Du Pont Method and apparatus for producing bulky continuous filament yarn

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262177A (en) * 1961-11-01 1966-07-26 Owens Corning Fiberglass Corp Apparatus for producing novelty bulked yarn
US3346682A (en) * 1962-03-16 1967-10-10 Du Pont Method for making a filtering medium from plexifilamentary material
US3220082A (en) * 1962-03-29 1965-11-30 Eastman Kodak Co Jet apparatus for treatment of textile fibers
US3262178A (en) * 1963-06-12 1966-07-26 Eastman Kodak Co Tow treating apparatus
US3286321A (en) * 1963-11-22 1966-11-22 Eastman Kodak Co Method of treating multifilament yarn
US3279024A (en) * 1964-09-24 1966-10-18 Teijin Ltd Method and apparatus for making bulky continuous filament yarn
US3479707A (en) * 1967-08-02 1969-11-25 Us Textile Mach Co Jet fiber texturizer
DE1932706A1 (en) * 1968-06-28 1970-01-08 Du Pont Texturing device
US3545057A (en) * 1968-09-30 1970-12-08 Du Pont Yarn treating apparatus

Similar Documents

Publication Publication Date Title
US2884756A (en) Apparatus and method for producing bulk yarn
US1871100A (en) Process and apparatus for manipulating textile materials
US2515299A (en) Apparatus for imparting false twist to strands
US2379824A (en) Process and apparatus for treating artificial filaments
US3343240A (en) Method and apparatus for bulking synthetic fibers
US2997771A (en) Apparatus for the production of bulky yarns
US3303546A (en) Apparatus for treating filamentary material in a fluid
US2942402A (en) Process and apparatus for producing voluminous yarn
US2994938A (en) Yarn-treating apparatus
IL25868A (en) Tow tie-in method
US3282768A (en) Apparatus for blooming filter tow
US3007298A (en) Method and apparatus for jet bulking of yarn
US3576058A (en) Process and apparatus for the continuous compression crimping and setting of a multifilament yarn
US3302386A (en) Process for making tangled yarn
US3297506A (en) Process and apparatus for blooming tow
US4495757A (en) Method of and apparatus for manufacturing yarn with a core
US4069564A (en) Process for producing interlaced or entangled multifilament yarns
US3010270A (en) Apparatus for producing voluminous yarn
US4003111A (en) Process for preparing a texturized glass fiber strand
GB1090210A (en) Method for the manufacture of strands from films of alkylene polymers
US3795096A (en) Product and process
GB1424771A (en) Process and apparatus forthe manufacture of slub yarns
US3443372A (en) Production of yarn and apparatus for use therein
GB1368317A (en) Bulk yarn and process and device for obtaining this yarn
US2908944A (en) Manufacture of staple fiber