US2820278A - Crimping mechanism - Google Patents

Crimping mechanism Download PDF

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Publication number
US2820278A
US2820278A US316746A US31674652A US2820278A US 2820278 A US2820278 A US 2820278A US 316746 A US316746 A US 316746A US 31674652 A US31674652 A US 31674652A US 2820278 A US2820278 A US 2820278A
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US
United States
Prior art keywords
rollers
propelling
roller
subsidiary
yarn
Prior art date
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Expired - Lifetime
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US316746A
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English (en)
Inventor
Mariani Giuseppe
Munch Werner
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Perfogit SpA
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Perfogit SpA
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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

  • Fig. 1 diagrammaticall'y represents a device embodying'the invention,..seen in one operatingsta-ge; Fig; 2" represents inthe same manner the" samedevice in a d'iiferent operating stage; Fig. 3 illustratesmore completely, but always rather schematiically, a particular embodiment of t-he'i'nvention; Figures '4 and 5"simil'arly' il'l ustrateother embodiments; and a further embodiment is partially shown in perspective in Fig. 6, while one half of the same is shown more completely in lateral and sectional viewin' Fig. 7. Figs. '8a-and 8'b show in perspective view two modifications of certain elements of the. device according to the invention, and
  • the device is showrr'as substantially comprising a pair of -rollers,indicated. inall thedrawings bynumerals. 1d-1llfl for propelling the fibreinrthe shape of continuous filaments, or filament bundles or in. any:
  • yarn-J and a second pair of rollers,.indicated1in' allathe drawings'by numerals 1111, mounted in such. a way as to. oppose the. travel.- of the yarn and. create. the resist ance thereto required to produce crimping.
  • yarn-J and a second pair of rollers,.indicated1in' allathe drawings'by numerals 1111, mounted in such. a way as to. oppose the. travel.- of the yarn and. create. the resist ance thereto required to produce crimping.
  • rollers 1111 are considerably smaller in diameter than propelling rollers:
  • Propelling rollers 10-10 one of which at least is keyed to a driving shaft While the. other may be similarly driven or'free, may have the-same or diiferentdiametersand may have. a smooth or a rough, knurled, grooved or in ,any way uneven surface; they may conveniently be assembled in such a way as to exert a suitable, ifdesired controllable, pressure on one another in order to accomtates PatentQ 2,320,278 Patented Jan. 21, 19.58
  • Subsidiary rollers 1111 that will be called friction rollers for reason-s that will better appear hereinafter, in a preferred embodiment are mounted so as to be capable of undergoing concurrent displacements along two component directions constantly perpendicular to one another, and precisely each friction roller (or better its axis) may undergo relatively ample displacements along circular arcs concentric with the surface of the adjacent propellingrol-ler-and generally small displacementsin thedirection of the line that connects the centers of said. friction roller and of theadjacent propellingroller. Any assemblage that will allow the friction roller to undergo an aggregate displacement that can be geometrically decomposed intotwo component displacements ofthe types: aforesaid, evenif said aggregate.
  • Any suitable means are further provided elastically to urge. rollers 11 and 11 towards. one another, and... said means may be suitably attached springs, for instance,
  • roller 1'I ismounted in a manner'perfectlyanalbgous to that of roller 11.
  • the band, bundle of filaments or sliver 20 penetrates: into thecrimping chamber 12 and, since it cannot'leavev it, iti' As the" yarn accumulates in the crimping chamber, a pressureis;
  • rollers 1111 modate possible differences, for instance differences in In. the end the: friction of the-yarn always prevails, also. because the pressure of the yarntends" to move. rollers 1111 away not only from one another but fromthe It may be that rollers 1111-E. never cease to contact the propelling rollers, inasmuch; as it. sufiicesthat the pressure of the first mentioned on; the second mentioned rollers be brought down to zero.--; or at least so lightened as to assure that the friction oft: the yarn should overcome the friction: of the propelling:
  • rollers thus. stopping the rotation of rollers 1111".
  • rollers 11-11 do not rotate to any significant degree as long as the yarn discharges easily from the crimping chamber, but if said yarn accumulates therein and the pressure rises then rollers 11-11' intermittently rotate in the direction of the arrow of Fig. 2 facilitating the discharge of the yarn and the release of the pressure generated within that chamber. This occurs because under such conditions the friction of the yarn n rollers 11-11' is the dominating factor.
  • rollers 11-11' drawn nearer to each other thereby causing said pressure to increase, and said increase forces said roller to move again away, and thus the pressure oscillations that may occur are automatically compensated and the crimped yarn issues from chamber 12, possibly at a variable rate.
  • rollers 21-21 may also be convenient to drive the friction rollers only when they have reached a certain distance from the propelling rollers and from one another, for instance by means of a device such as that illustrated in Fig. 5.
  • two driven rollers 21-21 are provided in a fixed position, and said rollers in the initial operating stage rotate without performing any work.
  • rollers 11-11' draw away from each other, they get nearer to rollers 21-21 as it is seen in Fig. 5. Therefore, if for any reason yarn 20 should not be discharged from chamber 12 with the proper speed, it would accumulate therein pushing rollers 11-11' constantly farther away from each other until said rollers would bear against the rollers 21-21 and be driven thereby into rotation, thereby facilitating the discharge of the yarn from chamber 12.
  • Rollers 21-21 could also be located internally of rollers 11-11' by making these latter hollow.
  • Friction rollers 11-11' may have a smooth surface but they also may conveniently be ribbed, knurled, toothed or have a surface roughened or made uneven in any suitable manner to facilitate the generation of friction between them and the yarn, as indicated with respect to roller 11 in Fig. 5. They may have the same diameter or different diameters as in Fig. 5, taking also into account the possibility that the propelling rollers may have different diameters.
  • Numerals 15-15' again indicate the shafts of the main rollers.
  • a sleeve 22 (Fig. 7) is free on shaft 15.
  • An arm 23 is rigidly connected to said sleeve and is also rigidly connected to sleeve 24 concentrically whereof a pivot 25 may freely turn.
  • the sleeve 24 has been broken away to show the sleeve 26.
  • a rod 27 is rigidly connected to sleeve 26 and to said rod there is rigidly connected sleeve 28 concentrically whereof there may freely rotate the shaft, designated therein by numeral 30, of subsidiary roller 11 which latter is located behind a plate 29 illustrated in part, said plate serving to make a tight con tact with the end faces of the four rollers and to close, in cooperation with another symmetric plate, the crimping device in the direction of the axes of the rollers.
  • Analogous or equivalent tight closure means should of course be understood as being provided in all the embodiments of the invention. The word tight of course refers to the capacity to retain the yarn.
  • Stop pawls 46-46 pivoted in any suitable way on any fixed portion of the device and provided with return springs not illustrated, prevent the rotation of wheels 45-45 and therefore of the friction rollers in a direction opposite to the rotation of the corresponding propelling rollers which occurs as indicated by the arrows.
  • Cylinders 44-44 carry fingers 47-47 having a conveniently shaped point and which are constantly urged towards ratchet wheels 45-45 by springs 48-48 or like means, said fingers operating as actuating pawls for said ratchet wheels.
  • the device accoding to the invention one can operate at high yarn speed, for instance at one hundred meters per minute and even more. It is further understood that the device may be provided, besides the abovementioned closure means, with accessory organs, such as for instance means for leading a lubricating liquid to the yarn.
  • the subsidiary rollers may have smooth, rough or irregular surfaces.
  • Fig. 8a shows in perspective View a pair of subsidiary rollers 60-60' having grooved surfaces.
  • Fig. 8b shows in like view another pair of subsidiary rollers 61-61' having knurled surfaces.
  • Device for crimping textile filaments, yarn, bundles of filaments and like materials comprising two propelling rollers for propelling the filaments, two subsidiary rollers, means for mounting said subsidiary rollers with their axes substantially parallel to those of said propelling rollers and displaceable perpendicularly thereto, one of said subsidiary rollers being positioned adjacent to one of said propelling rollers and the other subsidiary roller being positioned adjacent to the other propelling roller resilient means urging said subsidiary rollers against one another and each.
  • a crimping chamber extending longitudinally in a direction parallel to the axes of the rollers, and means for substantially sealing said crimping chamber at its two longitudinally opposed ends whereby said chamber is substantially completely closed when the device is in an inoperative position, the direction of rotation of said propelling rollers, when the device is in operation, being such that they force the filaments into said crimping chamber whereby a pressure is built up therein to cause the filaments to become crimped, said resilient means yielding to said pressure to allow the crimped filaments to be discharged from the crimping chamber.
  • Device comprising means for operatively connecting each subsidiary roller and the adjacent propelling roller for setting said subsidiary roller to rotate in the same direction as said propelling roller.
  • Device comprising an eccentric keyed to the shaft of each propelling roller, a ratchet wheel keyed to the shaft of the adjacent subsidiary roller, a pawl engaging said ratchet wheel, means for operatively connecting said pawl to said eccentric whereby to cause an intermittent rotation of said ratchet wheel in the direction of the rotation of said eccentric, and means for blocking any rotation of said ratchet wheel in the opposite direction.
  • Device according to claim 1 comprising subsidiary rollers having their surfaces with indentations.
  • Device comprising two arms pivoted respectively at the axis of the two propelling rollers, and two supports slidable each on one of said arms, the subsidiary rollers being mounted each on one of said two supports.
  • Device comprising two arms pivoted respectively at the axis of the two propelling rollers, two rods pivoted each to one of said arms, and two shafts journalled each in one of said levers, the subsidiary rollers being mounted each on one of said shafts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US316746A 1951-11-30 1952-10-24 Crimping mechanism Expired - Lifetime US2820278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2820278X 1951-11-30

Publications (1)

Publication Number Publication Date
US2820278A true US2820278A (en) 1958-01-21

Family

ID=11436034

Family Applications (1)

Application Number Title Priority Date Filing Date
US316746A Expired - Lifetime US2820278A (en) 1951-11-30 1952-10-24 Crimping mechanism

Country Status (6)

Country Link
US (1) US2820278A (no)
BE (1) BE515463A (no)
DE (1) DE1043576B (no)
FR (1) FR1070541A (no)
GB (1) GB722966A (no)
NL (1) NL91130C (no)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027619A (en) * 1956-11-27 1962-04-03 Ralph W List Crimping textile strands
US3046633A (en) * 1959-03-16 1962-07-31 Chori Co Ltd Apparatus for producing crimped thermoplastic synthetic yarns
US3065519A (en) * 1957-03-07 1962-11-27 English Rose Ltd Method of producing crimped thermoplastic yarns
US3067480A (en) * 1957-09-18 1962-12-11 Spunize Company Of America Inc Yarn guide and crimper for textile machines
US3072997A (en) * 1960-03-04 1963-01-15 Adelaide Mills Centrifriction bobbin cleaner
US3090096A (en) * 1959-05-13 1963-05-21 Techniservice Corp Strand-crimping apparatus
US3096558A (en) * 1959-09-23 1963-07-09 Bancroft & Sons Co J Crimping apparatus
US3152379A (en) * 1962-05-29 1964-10-13 American Cyanamid Co Tow crimper closure
US3167846A (en) * 1961-09-14 1965-02-02 British Nylon Spinners Ltd Apparatus and method for crimping yarn
US3178794A (en) * 1962-01-04 1965-04-20 Turbo Machine Co Method of and apparatus for coiling continuous filament yarn and yarn produced thereby
US3296677A (en) * 1963-05-20 1967-01-10 Eastman Kodak Co Crimping apparatus and process
US3512231A (en) * 1968-06-10 1970-05-19 Techniservice Corp Strand treatment
US4142278A (en) * 1976-10-29 1979-03-06 Richard R. Walton Compressive treatment of web materials
US8046885B1 (en) * 2008-06-02 2011-11-01 Superba Apparatus and methods for crimping textile threads

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1144434B (de) * 1957-07-12 1963-02-28 Spinn Und Zwirnereimaschb Karl Verschluss fuer Stauchkraeuselkammern zum Kraeuseln endloser synthetischer Faeden oder Fadenbuendel
GB857974A (en) * 1958-11-25 1961-01-04 Scragg & Sons Improvements in apparatus for crimping textile yarns
NL255668A (no) * 1959-09-23
DE1816028C3 (de) * 1968-12-20 1982-06-09 Vepa AG, 4125 Riehen, Basel Vorrichtung zum Kräuseln von synthetischen Fadenscharen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2263712A (en) * 1939-03-20 1941-11-25 Bradford Dyers Ass Ltd Process of and apparatus for shrinking fabrics and yarns
US2500690A (en) * 1945-11-21 1950-03-14 Owens Corning Fiberglass Corp Apparatus for making fibrous products

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE114754C (no) *
DE487071C (de) * 1925-12-30 1929-12-28 Augustin Pellerin Vorrichtung zur Herstellung wolleaehnlicher Cellulosekunstfaeden
FR36512E (fr) * 1928-10-30 1930-06-28 Dispositif servant à friser les fils de matière cellulosique à la sortie des machines de filature
DE659025C (de) * 1936-09-19 1938-04-23 Emil Mundorf Wasch- und Walkvorrichtung fuer Gewebe
US2311174A (en) * 1940-12-06 1943-02-16 Du Pont Textile crinkler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2263712A (en) * 1939-03-20 1941-11-25 Bradford Dyers Ass Ltd Process of and apparatus for shrinking fabrics and yarns
US2500690A (en) * 1945-11-21 1950-03-14 Owens Corning Fiberglass Corp Apparatus for making fibrous products

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027619A (en) * 1956-11-27 1962-04-03 Ralph W List Crimping textile strands
US3065519A (en) * 1957-03-07 1962-11-27 English Rose Ltd Method of producing crimped thermoplastic yarns
US3067480A (en) * 1957-09-18 1962-12-11 Spunize Company Of America Inc Yarn guide and crimper for textile machines
US3046633A (en) * 1959-03-16 1962-07-31 Chori Co Ltd Apparatus for producing crimped thermoplastic synthetic yarns
US3090096A (en) * 1959-05-13 1963-05-21 Techniservice Corp Strand-crimping apparatus
US3096558A (en) * 1959-09-23 1963-07-09 Bancroft & Sons Co J Crimping apparatus
US3072997A (en) * 1960-03-04 1963-01-15 Adelaide Mills Centrifriction bobbin cleaner
US3167846A (en) * 1961-09-14 1965-02-02 British Nylon Spinners Ltd Apparatus and method for crimping yarn
US3178794A (en) * 1962-01-04 1965-04-20 Turbo Machine Co Method of and apparatus for coiling continuous filament yarn and yarn produced thereby
US3152379A (en) * 1962-05-29 1964-10-13 American Cyanamid Co Tow crimper closure
US3296677A (en) * 1963-05-20 1967-01-10 Eastman Kodak Co Crimping apparatus and process
US3512231A (en) * 1968-06-10 1970-05-19 Techniservice Corp Strand treatment
US4142278A (en) * 1976-10-29 1979-03-06 Richard R. Walton Compressive treatment of web materials
US8046885B1 (en) * 2008-06-02 2011-11-01 Superba Apparatus and methods for crimping textile threads

Also Published As

Publication number Publication date
GB722966A (no)
NL91130C (no)
DE1043576B (de) 1958-11-13
FR1070541A (fr) 1954-07-28
BE515463A (no)

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