US3604199A - Plurality end crimping - Google Patents

Plurality end crimping Download PDF

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Publication number
US3604199A
US3604199A US813031A US3604199DA US3604199A US 3604199 A US3604199 A US 3604199A US 813031 A US813031 A US 813031A US 3604199D A US3604199D A US 3604199DA US 3604199 A US3604199 A US 3604199A
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US
United States
Prior art keywords
yarn
crimper
crimped
crimping
cores
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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
US813031A
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English (en)
Inventor
Eugene Torello-Viera
Alexander L Trifunovic
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.)
Joseph Bancroft and Sons Co
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Joseph Bancroft and Sons Co
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 Joseph Bancroft and Sons Co filed Critical Joseph Bancroft and Sons Co
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Publication of US3604199A publication Critical patent/US3604199A/en
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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
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes

Definitions

  • crimped ends are extracted from the respective cores at the [51] Int. discharge end of the crimper, and are combined and wound [50] together onto a winding to form a yarn composed of readily identifiable ends.
  • PATENTED SEPI 4mm 6 199 sum 1 OF 3 INVENTORS EUGENE TORELLO-VIERA ALEXANDER L TRlFUNOVlC ATTORNEY PATENTEUSEPMIEWI $504 199 SHEET 2 OF 3 lllllllll INVENTORS sue TORELLO-V IE RA NOVIC ALE DER TRIFU ATi'ORNEY PATENT'EU sEPl 199.99 3,604; 199
  • Another object is to provide a method of the above type which eliminates various difficulties heretofore encountered in crimping certain types of filaments in a stuffer crimper.
  • Another object is to provide a method for crimping filaments in a stuffer crimper in which filament breakage and looping is reduced.
  • Another object is to produce a product having a more uniform bulk, even though the crimps along the individual yarn ends may be somewhat nonuniform.
  • the invention may be applied to the crimping of yarn ends having little or no twist; for example, one-half or less turns per inch along the length of the yarn.
  • Such yarn ends are difficult 'to crimp in a stuffer crimper because the individual filaments tend to bloom out, form loops and entangle with themselves as they are crimped in the space between the feed rolls and the nosepiece of the crimping chamber causing undesirable slubs, loops, and broken filaments in the crimped yarn product.
  • Lo'w twist polyester yarns require special handling in a stuffer crimper due to the tendency of the filaments to break when subjected to tension in removing them from the crimping chamber after crimping and setting.
  • a stuffer crimper due to the tendency of the filaments to break when subjected to tension in removing them from the crimping chamber after crimping and setting.
  • FIG. 1 is an elevation of a stuffer crimper which is adapted for the above purpose
  • FIG. 2 is a transverse section taken on the line 2-2 of FIG. 1 showing the construction of the guide roll;
  • FIG. 3 is a section taken on the'line 3-3 of FIG. 1 showing the relative positions of the ends as fed into the stuffer crimper;
  • FIG. 4 isa section taken on the line 4--4 of FIG. 1 showing the crimped ends as extracted from the stufier crimper;
  • FIG. 5 is a section taken on the line 5-5 of FIG. 1 showing the ends as wound onto the winder package.
  • a stuffer crimper comprising a heater block mounted on suitable support'members 11 and carrying a tube 12 forming a crimping and setting chamber and having heating elements 13 disposed in bores parallel to the tube 2- 12 and adapted to supply heat to the portion of the tube within the block 10.
  • a pair of feed rolls 14 and 15 is disposed below the end of the tube 12 in a position to feed a pair of yarns 16 into the tube to be folded over and crimped against a mass of previously crimped yarn held as cores 17 in said tube.
  • the lower end of the tube 12 is formed with a saddle l 8zextending over the bite of the feed rolls 14, 15 to form a confined crimping chamber.
  • the feed roll 14 is mounted on a shaft 19 journaled in a bearing in a support bracket 20 and the feed roll 15 is mounted on shaft 21 journaled in a pivoted bracket 22 and is biased for pressure engagement with the yarns 16 as they are fed between the feed rolls into the tube 12.
  • the shafts l9 and 21 are geared together for operation in unison by gears 23 and the shaft 19 is driven by suitable means such as a feed motor not shown.
  • a guide shown as a roll 24 is mounted adjacent the feed roll 14 and is provided with a pair of spaced annular grooves 25 for guiding the yarn ends 16 around feed roll 14 and into the saddle 18, for crimping in side-by-side relationship and forming a pair of cores 17 which are advanced together in side-byside relationship along the tube 12.
  • the ends 16 which may comprise of bundles of filaments having a low twist are fed from pirns 26 through tension gates 27 to the guide roll 24. Guiding the yarn ends around feed roll 14 flattens out the yarn bundles and facilitates the folding over and crimping of the individual filaments in the saddle 18. It is important also that the yarn bundles be properly spaced as they are fed into the saddle so that they will maintain their individual cores in the chamber. Preferably each .end should be spaced so that it uses a proportionately equal amount of volume in the saddle.
  • a sensing device is disposed on the tube 12.
  • This device comprises a cylindrical member 30 havinga conical bore 31 at its lower end inclined to rest onand engage the outer peripheries of the cores l7 and having a cylindrical bore 32 through which the crimped ends are extracted.
  • the element 30 has pins 33 extending outwardly through slots 42 in the tube 12.
  • a feeler wire extends aroundthe tube l2and is engagedbythe pins 33.
  • This feeler wire 41 is pivoted at 43 to actuate a microswitch 44.
  • the switch 44 is mounted on arbracket 46 which is clamped to the tube 12 by a clamp 47 and is adjustable along the tube.
  • the microswitch 44 isconnected to.,c ontrol the operation of the feed motor or of the winder motor so as; to vary the input or the output of theyarn in a sense.to,main tain the discharge point at a substantially constant level.
  • the sensing device 30 rests lightly on-the cores 17 so as not to exert appreciable pressure thereon. Although a microswitch is shown, it may be desirable to use a more sensitive control switch such as, for example, a-mercury switch.
  • the crimped ends are withdrawn-from the top of. the core through a ceramic eye 48, tension gate 49,,and slub catcher 49a and are directed through a traverse guide54 to a constant speed winder 50 including a winding 51. and adriving roll 52 which is driven at constant speed by a motor not shown and on which the winding .51 rests .and is driven at a constant peripheral speed.
  • the tension gate ,and string-up to the winder is important in uniformly aligning the yarn ends before they are wound on the winding 51 and especially so in connection with yarns that form slubs during the crimping process.
  • the pair of ends which are extracted from the crimping chamber are wound together on the winding 51 and form a single yarn in which the two ends are readily identifiable. Twist may be added to this yarn in a further processing step .if desired, or the yarn may be used directly fonknittingonweaving, or the yarn may be further plied with other yarn ends.'- lt should be noted that in multiples of two ends or more,;this invention contemplates separating the ends into groups and winding them onto two or more windings to form two ,-or;more yarn products.
  • the double end yarn columns move upwardly through the chamber more smoothly than is possible with single end crimping since there is twice as much thrust against the same volume of yarn in the double end crimping system and the thrust is more uniformly distributed. Since twice as much yarn is entering the chamber at the same speed as in single end crimping, this undoubtedly is a factor in achieving the improved shorter leg length crimp. Also it doubles the throughput.
  • the lateral confinement provided by the adjacent yarn ends results in a higher crimp frequency at a given back pressure or conversely, a lower back pressure is required to produce a given crimp frequency.
  • the number of ends will determine the crimp frequencies; i.e., the greater number of ends will produce a higher crimp frequency. This is so because the extent to which the yarn ends are laterally confined dictates the extent to which the ends can fold over laterally and crimp in the saddle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US813031A 1969-04-03 1969-04-03 Plurality end crimping Expired - Lifetime US3604199A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81303169A 1969-04-03 1969-04-03

Publications (1)

Publication Number Publication Date
US3604199A true US3604199A (en) 1971-09-14

Family

ID=25211267

Family Applications (1)

Application Number Title Priority Date Filing Date
US813031A Expired - Lifetime US3604199A (en) 1969-04-03 1969-04-03 Plurality end crimping

Country Status (10)

Country Link
US (1) US3604199A (pt)
JP (1) JPS5425143B1 (pt)
BR (1) BR7017913D0 (pt)
CH (2) CH537994A (pt)
DE (1) DE2015030A1 (pt)
ES (1) ES378142A1 (pt)
FR (1) FR2042809A5 (pt)
GB (1) GB1262243A (pt)
IL (1) IL34226A (pt)
NL (1) NL151750B (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921380A (en) * 1974-05-31 1975-11-25 Indian Head Inc Crimped continuous filament yarn and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL172468C (nl) * 1970-10-15 1983-09-01 Rhone Poulenc Textile Werkwijze en inrichting voor het textureren van garen door opeenhopen en samenpersen in een stuwkamer.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2092811A (en) * 1933-03-10 1937-09-14 Celanese Corp Treatment of yarns
US3065519A (en) * 1957-03-07 1962-11-27 English Rose Ltd Method of producing crimped thermoplastic yarns
US3160923A (en) * 1956-12-24 1964-12-15 Bancroft & Sons Co J Crimping apparatus
US3298079A (en) * 1965-05-24 1967-01-17 Eastman Kodak Co Method for producing a novel crimped yarn and fabric

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2092811A (en) * 1933-03-10 1937-09-14 Celanese Corp Treatment of yarns
US3160923A (en) * 1956-12-24 1964-12-15 Bancroft & Sons Co J Crimping apparatus
US3065519A (en) * 1957-03-07 1962-11-27 English Rose Ltd Method of producing crimped thermoplastic yarns
US3298079A (en) * 1965-05-24 1967-01-17 Eastman Kodak Co Method for producing a novel crimped yarn and fabric

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921380A (en) * 1974-05-31 1975-11-25 Indian Head Inc Crimped continuous filament yarn and method

Also Published As

Publication number Publication date
ES378142A1 (es) 1972-05-16
CH480170A4 (pt) 1972-12-15
IL34226A0 (en) 1970-06-17
JPS5425143B1 (pt) 1979-08-25
CH537994A (de) 1972-12-15
FR2042809A5 (pt) 1971-02-12
IL34226A (en) 1973-05-31
NL7004530A (pt) 1970-10-06
NL151750B (nl) 1976-12-15
BR7017913D0 (pt) 1973-01-18
GB1262243A (en) 1972-02-02
DE2015030A1 (de) 1970-10-22

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