US3167846A - Apparatus and method for crimping yarn - Google Patents

Apparatus and method for crimping yarn Download PDF

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Publication number
US3167846A
US3167846A US220289A US22028962A US3167846A US 3167846 A US3167846 A US 3167846A US 220289 A US220289 A US 220289A US 22028962 A US22028962 A US 22028962A US 3167846 A US3167846 A US 3167846A
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US
United States
Prior art keywords
roll
feed rolls
crimping
yarn
box
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
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US220289A
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English (en)
Inventor
Iwnicki Kurt
David B Miller
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.)
British Nylon Spinners Ltd
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British Nylon Spinners Ltd
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Filing date
Publication date
Application filed by British Nylon Spinners Ltd filed Critical British Nylon Spinners Ltd
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Publication of US3167846A publication Critical patent/US3167846A/en
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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
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes

Definitions

  • the present invention concerns improvements in or relating to the crimping of yarn and has particular reference to crimping by the so-called stutter-box process.
  • the crimping of yarns is often desirable in order to increase their bulk and to give them a fuller and loftier handle than that which they posses in uncrimped form.
  • Crimping has become one of the major processes in the field of yarn supply and, although it is sometimes carried out on yarns or slivers of staple fibre, it is normally carried out on continuous filament yarns and it has enabled them to be utilized in many textile articles in which traditionally only spun yarns were capable of being used.
  • Such textile articles are for example knitted outerwear and carpets, whether the latter be of the cut or uncut pile type.
  • a filamentary structure it is sometimes possible for part or all of a filamentary structure to slip slightly between the rolls when the latter are being used to withdraw the filamentary structure from a supply or supplies thereof; and this is especially the case when, as is often desirable, there is a small clearance between the peripheries of the feed rolls at their closest point. Consequently, separate feed means are sometimes employed whose function is to withdraw the filamentary structure from its supply and to forward it to the feed rolls of the stuffer-box at a low tension when the risk of slipping will be greatly minimised if not completely obviated.
  • the disadvantage of slipping may only be likely to be of great consequence when the filamentary structure being crimped comprises a plurality of multi-filarnent yarns and the slipping affects one or more of such yarns.
  • the composite crimped yarn withdrawn from the stuffer-box will comprise component yarns which have had an unequal crimp; and one effect of such unequal crimping will be that the composite yarn has a tendency to split up into its separate components, when employed, for example, as pile yarn in a tufted carpet. This splitting of the yarn into its components may not be desirable.
  • apparatus comprising rotatable forwarding means driven by contact with one of the feed rolls of the stufferbox, the filamentary structure being led at least partly around such means and between it and the feed roll vUnited States Patent ICC prior to its entry between the nip of the feed rolls of the stuffer-box.
  • the invention consists in a stutter-box crimper comprising feed rolls for forcing a filamentary structure therebetween and into a zone of compression, and having rotatable means for forwarding the filamentary structure to said feed rolls, which rotatable means is driven by contact with one of the said feed rolls, so that the filamentary structure is automatically and positively forwarded to the feed rolls at the same rate that it is forced into the zone of compression.
  • the invention also consists in a process for crimping a filamentary structure comprising positively forwarding said structure automatically at the desired rate, and at a low, even or a negligable tension, to the feed rolls of a stuifer-box crimper, and crimping the structure therein.
  • the forwarding means comprises a roll driven byperipheral contact with the stuifer-box feed roll and held in contact therewith by a spring or other like means.
  • a driven roll has a peripheral surface composed of a material, such as rubber, having a high coeflicient friction with the filamentary structure in order that the forwarding effect shall be a positive one.
  • the stutter-box crimper shown diagrammatically at 1 has driven feed rolls 3 and 5, whose peripheries are at their closest point some 3 thousandths of an inch apart, for forcing the filamentary structure 7 into the zone of compression within the stutter-box where the structure, in this case a single yarn, is crimped.
  • the forwarding roll 9 has a peripheral surface of rubber, and is held in contact with feed roll 5 by means of spring 11 which is attached at one of its ends to an extension of arm 13 on which roll 9 is mounted, and at the other of its ends to a portion of the machine mounting.
  • Yarn 7 is led through guide 15 from a source of supply (not shown) and thence travels in contact with a portion of the periphery of roll 9 before being forwarded from the nip of rolls 5 and 9 at a low tension to the stutter box.
  • the yarn may then travel continuously in contact with the portion of the periphery of roll 5 prior to entry into the stutter-box, or it may intermittently be raised slightly clear thereof in a free loop, depending on whether there is any slippage between it and the rolls 3 and 5.
  • a means for forwarding a filamentary structure, whether composed of a single or a plurality of component yarns or filaments, to a stulfer-box under a low, even or a negligible tension, such means being of a kind that automatically provides for the correct for warding rate, owing to the fact that it is driven by contact with one of the feed rolls itself.
  • Apparatus for crimping a continuous filamentary structure comprising: a crimping chamber; two fixed closely-spaced feed rolls driven at a predetermined rate such that said structure when passed between them is forced into said chamber; and structure forwarding means comprising a third roll arranged so that said structure is in contact with a portion of the periphery of said third roll and is gripped between said third roll and one of said feed rolls, said third roll being driven by said one 3 4 feedroll such-that said structure is positively forwarded 4.'A process according to claim 3 wherein the strucby said third roll at the sarne rate as said predetermined ture is withdrawn from its supply and is forwarded to rate at which it is forced into said chamber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US220289A 1961-09-14 1962-08-29 Apparatus and method for crimping yarn Expired - Lifetime US3167846A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB32964/61A GB963710A (en) 1961-09-14 1961-09-14 Improvements in or relating to the crimping of filamentary structures

Publications (1)

Publication Number Publication Date
US3167846A true US3167846A (en) 1965-02-02

Family

ID=10346632

Family Applications (1)

Application Number Title Priority Date Filing Date
US220289A Expired - Lifetime US3167846A (en) 1961-09-14 1962-08-29 Apparatus and method for crimping yarn

Country Status (6)

Country Link
US (1) US3167846A (de)
BE (1) BE622437A (de)
CH (1) CH405597A (de)
DE (1) DE1435347A1 (de)
ES (1) ES280756A1 (de)
GB (1) GB963710A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364541A (en) * 1965-09-21 1968-01-23 Charles A. Mcclure Method of crimping textile strands
US3376622A (en) * 1962-08-13 1968-04-09 Techniservice Corp Strand treatment
US3462815A (en) * 1967-11-20 1969-08-26 Techniservice Corp Strand treatment
US3462814A (en) * 1967-10-26 1969-08-26 Techniservice Corp Strand treatment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3134103B2 (ja) * 1991-03-30 2001-02-13 株式会社竹原機械研究所 繊維巻縮装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758358A (en) * 1953-08-06 1956-08-14 Alexander Smith Inc Filament crimping apparatus
US2820278A (en) * 1951-11-30 1958-01-21 Perfogit Spa Crimping mechanism
US3000060A (en) * 1959-01-08 1961-09-19 Bancroft & Sons Co J Crimping apparatus
US3022545A (en) * 1956-09-06 1962-02-27 British Celanese Process for crimping cellulose triacetate fibers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2820278A (en) * 1951-11-30 1958-01-21 Perfogit Spa Crimping mechanism
US2758358A (en) * 1953-08-06 1956-08-14 Alexander Smith Inc Filament crimping apparatus
US3022545A (en) * 1956-09-06 1962-02-27 British Celanese Process for crimping cellulose triacetate fibers
US3000060A (en) * 1959-01-08 1961-09-19 Bancroft & Sons Co J Crimping apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376622A (en) * 1962-08-13 1968-04-09 Techniservice Corp Strand treatment
US3364541A (en) * 1965-09-21 1968-01-23 Charles A. Mcclure Method of crimping textile strands
US3462814A (en) * 1967-10-26 1969-08-26 Techniservice Corp Strand treatment
US3462815A (en) * 1967-11-20 1969-08-26 Techniservice Corp Strand treatment

Also Published As

Publication number Publication date
DE1435347A1 (de) 1969-05-08
ES280756A1 (es) 1963-01-16
BE622437A (de)
CH405597A (de) 1966-01-15
GB963710A (en) 1964-07-15

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