US3105998A - Raboisson - Google Patents

Raboisson Download PDF

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Publication number
US3105998A
US3105998A US3105998DA US3105998A US 3105998 A US3105998 A US 3105998A US 3105998D A US3105998D A US 3105998DA US 3105998 A US3105998 A US 3105998A
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Prior art keywords
rolls
drafting
length
rollers
pairs
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H2700/00—Spinning or twisting machines; Drafting devices
    • D01H2700/245—Conception or fabrication of drafting cylinders

Definitions

  • the present invention has for its object improvements in textile drafting mechanisms for roving frames, spinning frames and like textile machines with a view to adjusting readily the length or distance of the drafting field.
  • the drafting mechanism according to the invention includes at least four pairs of bottom and top rollers mounted preferably in stationary locations and of which at least the top rollers may be exchanged for each other, the bosses of at least the top rollers being designed in at least two different manners, one of the four pairs of rollers being associated with the conventional top and bottom aprons.
  • the outer surface of the bosses of a number of top rollers are unbroken, while the other top rollers have outer boss surfaces which are recessed in their medial area.
  • the top rollers which have a recessed medial area may be obtained either through moulding or through cutting from the bar said area within the mass of the original cylindrical boss or again by fitting a rubber or the like suitably shaped covering over an unbroken cylindrical member and lastly by a fitting of two strip-shaped coverings over the ends of a cylindrical member or through any other suitable means.
  • the aprons occupy a stationary position, preferably over the rollers of the third pair of rollers in the direction of progression of the sliver or roving at least the top apron being adapted to cooperate either with a roller having an unbroken outer boss surface or else with a roller provided with a surface the medial area of which is recessed.
  • FIG. 1 is a diagrammatic sectional view showing, in the transverse plane of symmetry of one of the twin rollers forming part of the top rollers, a first arrangement of a drafting mechanism according to the invention
  • FIG. 2 is a sectional view of the drafting mechanism of FIG. 1 arranged for the drafting of shorter fibres.
  • FIG. 3 is a sectional view of the drafting mechanism of FIG. 1 arranged for the drafting of still shorter fibres.
  • FIG. 4 is a diagrammatic axial cross-section of a top roller constituted by half or twin rollers having an unbroken boss outer surface.
  • FIG. 5 is an axial sectional view of an embodiment of the half or twin rollers forming a top roller and the boss outer surface of each of which is recessed in its medial area.
  • FIG. 6 is an axial sectional view illustrating another embodiment of twin rollers provided with a medially recessed boss outer surface.
  • FIG. 7 is still another modification of a roller having a medially recessed boss outer surface.
  • FIG. 8 is an elevation view illustrating the cooperation of aprons with top rollers, having a recessed boss outer surface.
  • FIG. 9 is a longitudinal sectional view of a modification of the bottom roller.
  • the drafting mechanism according to the invention includes four pairs of associated top and bottom rollers.
  • the bottom rollers 1, 2, 3 and 4 may have fluted bosses a and b as illustrated in FIG. 8, or less, bosses with corrugations or spikes. They may also have coverings c and d of yelding material which has a suitable coefficient of friction as illustrated in FIG. 9.
  • the bottom rollers 2, 3, 4 revolve at the same speed or substantially so, with a view to very slightly tensioning the fibre sliver or roving between them, while the bot-tom front roller 1 revolves at the speed required for producing the desired drafting.
  • the bottom rollers cooperate with the top rollers 5, 6, 7 and ,8.
  • the different rollers are positioned at predetermined unvarying locations, but the top rollers 5, 6, 7 and 8 may be interchanged.
  • the outer surfaces of the bosses of the top rollers are designed in two different manners.
  • the rollers 5 and 6 are provided with a boss of an unbroken surface, which is obtained for instance as illustrated in FIG. 4 by means of a cover 9 of rubber, cork or the like, fitted over the twin rollers 5a and '5! respectively.
  • the bosses 5a and 5b of the rollers 6* may be adapted to rotate independently of each other or dependently and the rotation in unison of the two bosses is necessary in the case of the spinning of roving fed from the so-called double-roving spools.
  • the roller 5 is always provided with independently rotating bosses.
  • rollers 7 and 8 in contradistinction include a medial area which is recessed and in fact three different embodiments are possible for the roller 8 as shown in FIGURES 5 to 7.
  • the twin rollers 8a and 8b are cut from the bar so as to produce recesses 10a and 16b which are bounded at their ends by the collars 11a, 12a and 11b, 121) respectively. It is furthermore preferable for the bosses of said rollers 7 and 8 to be executed so as to be capable of rotating independently of each other.
  • twin rollers 8a and 8b are each provided with a cover 13a and 13b respectively of a rubber, metal or the like suitable material which is shaped so as to be provided with a corresponding recess ll ta or 14b bounded by terminal collars.
  • the top rollers and 6 which have unbroken surfaces, cooperate with the bottom rollers 1 and 4 while the top rollers 7 and 8 the outer surfaces of which are recessed, cooperate with the bottom rollers 3 and 2; furthermore the pair of rollers 2-8 cooperates with the conventional top and bottom aprons 18 and 19.
  • This arrangement is intended for the drafting of very long staple fibres; as a matter of fact the drafting of the rovings or slivers 2i) progressing in the direction of the arrow 21 is obtained between the back roller nip 4-6 and the front roller nip 15, over a maximum distance designated by 22, while the rollers 7 and 8 having a broken or recessed surface exert a mere guiding action without any nipping of fibres.
  • the top apron 19 engages while in contact with the sliver 20 the recess ldb in the top roller 8 which is assumed to be similar to the roller illustrated in FIG. 5.
  • the aprons 18 and 19 exert a mere slight holding action on the fibres without preventing their sliding with reference to one another. It should also be remarked that the bottom twin rollers a and b may be replaced by rollers carrying small projections or spikes so as to improve the drive of the aprons.
  • the interchangeable t-op rollers are positioned in a manner such that the rollers 5 and 6 having unbroken surfaces cooperate with the corresponding bottom rollers 1 and 3 respectively while the further rollers 7 and 8 provided with recessed surfaces cooperate with the bottom roller 4 and with the bottom roller 2 and with the top apron 19 respectively.
  • the drafting field extends between the bottom rollers 1 and 3 as shown by the reference 23.
  • the arrangement according to FIG. 3 corresponds to the drafting of still shorter staple fibres.
  • the rollers 5 and 6 with unbroken surfaces cooperate with the bottom rollers 1 and 2 so as to limit the drafting field to the distance between the rollers 1 and 2, as shown at 24.
  • the aprons i8 and whip between them in this case the sliver 20 so as to ensure the drafting of the latter, since the top apron 19 cooperates with the roller 6' provided with an unbroken surface, while the rollers 7 and 8 having a recessed outer surface, serve only for guiding purposes.
  • the length of the drafting field is adjusted simply by changing the location of the top rollers 6, 7 and 8, which forms a speedy operation. Furthermore, the cost price of such a drafting mechanism is substantially lower than that of any of the known drafting mechanisms since it requires no longer the numerous parts incorporated with the conventional drafting mechanisms and adapted to adjust the length of the drafting field inside the member carrying the bottom rollers or inside the arms carrying the top rollers.
  • the bottom rollers may be merely carried by stationary holders engaging the spindles of said bottom rollers while the arms carrying the top rollers may be merely provided with four stationary spindles over which are clamped the spring-weighted saddles carrying the top rollers.
  • the use of the drafting mechanism disclosed is not limited to the spinning frames and it may serve with the same advantages and the same excellent results for drawing frames, slubbers, roving frames, and the like.
  • a drafting apparatus in combination, at least four consecutive spaced pairs of driven drafting rolls disposed spaced from each other at fixed predetermined intervals defining a drafting field having a variable length suitably adjustable for the length of the fibers being drafted, each pair of rolls comprising an elongated lower roll and an upper roll, the upper rolls of at least two of next successive pairs of said pairs of rolls being interchangeable for varying the length of said drafting field, one of the upper rolls of said pairs for varying the length of said drafting field comprising a tension applying roll having two axially spaced smooth peripheral portions cooperative with the corresponding lower roll, the other of said upper rolls for varying the length of said drafting field having two axially spaced portions with a neck of reduced diameter between them, each of said two portions comprising two axially spaced collars defining axially on the corresponding portion a section of predetermined reduced diameter, the sections of said two portions having a common diameter, and said one of the interchangeable upper rolls for varying the length of the field being disposed alternatively
  • a drafting apparatus in combination, at least four consecutive spaced pairs of driven drafting rolls disposed spaced from each other at fixed predetermined intervals defining a drafting field having a variable length suitably adjustable for the length of the fibers being drafted, each pair of rolls comprising an elongated lower roll and an upper roll, the upper rolls of three of next successive pairs of said pairs of rolls being interchangeable for varying the length of said drafting field, one of the upper rolls of said pairs for varying the length of said drafting field comprising a tension applying roll having two axially spaced smooth peripheral portions cooperative with the corresponding lower roll, the others of said upper rolls for varying the length of said drafting field having two axially spaced portions with a neck of reduced diameter between them, each of said two portions comprising two axially spaced collars defining axially on the corresponding portion a section of predetermined reduced diameter, the sections of said two portions having a common diameter, and said one of the interchangeable upper rolls for varying the length of the field being disposed alternatively in position
  • a drafting apparatus in combination, at least four consecutive spaced pairs of driven drafting rolls disposed spaced from each other at fixed predetermined intervals defining a drafting field having a variable length suitably adjustable for the length of the fibers being drafted, each pair of rolls comprising an elongated lower roll and an upper roll, a driven upper endless apron and a driven lower endless apron cooperative with a corresponding pair of said rolls, the upper rolls of three of next successive pairs of said pairs of rolls being interchangeable for varying the length of said drafting field, one of the upper rolls of said pairs for varying the length of said drafting field comprising a tension applying roll having two axially spaced smooth peripheral F portions cooperative with the corresponding lower roll, the others of said upper rolls for varying the length of said drafting field having two axially spaced portions with a neck of reduced diameter between them, each of said two portions comprising two axially spaced collars defining axially on the corresponding portion a section of predetermined reduced diameter, the section of said two

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US3105998D 1959-04-10 Raboisson Expired - Lifetime US3105998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR791703A FR1220510A (fr) 1959-04-10 1959-04-10 Perfectionnements aux laminoirs pour machines de préparation et de filature de fibres textiles

Publications (1)

Publication Number Publication Date
US3105998A true US3105998A (en) 1963-10-08

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ID=8713484

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US3105998D Expired - Lifetime US3105998A (en) 1959-04-10 Raboisson

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US (1) US3105998A (de)
CH (1) CH367093A (de)
DE (1) DE1131569B (de)
FR (1) FR1220510A (de)
GB (1) GB920427A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470253A (en) * 1980-06-09 1984-09-11 Firma Zinser Textilmaschinen Gmbh Spinning frame, preferably ring spinning frame
DE3536085A1 (de) * 1985-10-09 1987-04-09 Zinser Textilmaschinen Gmbh Doppelriemchen-streckwerk
US5022123A (en) * 1988-09-29 1991-06-11 Murata Kikai Kabushiki Kaisha Draft mechanism having roller pairs connected to draft ratio controlled motors by timing belts
US5638580A (en) * 1994-12-09 1997-06-17 Hanol Spinning Co., Ltd. Method of spinning all-wool yarn on cotton system
US5950413A (en) * 1997-04-18 1999-09-14 Wellman, Inc. Spinning apparatus, method of producing yarns, and resulting yarns
US5970700A (en) * 1997-04-18 1999-10-26 Wellman, Inc. Drafting apparatus and method for producing yarns
US6029318A (en) * 1997-12-18 2000-02-29 Zinser Textilmaschinen Gmbh Drafting frame for a spinning machine
US6250060B1 (en) * 1997-04-18 2001-06-26 Wellman, Inc. Method of producing improved knit fabrics from blended fibers
US20150252497A1 (en) * 2014-03-06 2015-09-10 Jiangnan University Method for drafting spun yarns in three stages

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480801A1 (fr) * 1980-04-18 1981-10-23 Schlumberger Cie N Dispositif a manchons pour l'etirage de fibres textiles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426425A (en) * 1944-08-08 1947-08-26 Saco Lowell Shops Long staple drafting mechanism
US2588420A (en) * 1948-08-18 1952-03-11 Saco Lowell Shops Textile drafting mechanism
US2856643A (en) * 1958-02-10 1958-10-21 Whitin Machine Works Apparatus for drafting relatively long textile fibers
US2931074A (en) * 1955-05-11 1960-04-05 Drafting apparatus for textile fibres

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE599833C (de) * 1934-07-10 Erich Langen Strecke, bei welcher die Baumwollbaender zwischen Riemchen gefuehrt sind
DE376447C (de) * 1917-12-09 1923-05-29 Saechsische Maschinenfabrik Vo Zupfstreckwerk (Walzenstreckwerk mit Gleitverzug) fuer Spinnereimaschinen
FR794136A (fr) * 1935-08-23 1936-02-08 Dispositif d'étirage pour matières fibreuses à fibres mi-longues et longues, en particulier la laine peignée
DE738597C (de) * 1940-09-24 1943-08-21 Hermann Kluftinger Dipl Ing Oberwalze fuer Riemchenstreckwerke
DE738596C (de) * 1940-09-24 1943-08-21 Hermann Kluftinger Dipl Ing Riemchenstreckwerk
DE908949C (de) * 1943-11-23 1954-04-12 Hermann Kluftinger Dipl Ing Streckwerk
FR1079910A (fr) * 1952-03-31 1954-12-03 Sampre Manchon élastique susceptible d'être appliqué ou fixé comme revêtement des rouleaux de pression sur les cylindres d'étirage et d'accompagnement sur les trains d'étirage des métiers à filer
GB734978A (en) * 1953-05-13 1955-08-10 Tmm Research Ltd Improvements in or relating to textile drafting apparatus
DE1065761B (de) * 1956-08-11 1959-09-17 Schiess Ag Doppelriemchenstreckwerk an Vor- und Feinspinnmaschinen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426425A (en) * 1944-08-08 1947-08-26 Saco Lowell Shops Long staple drafting mechanism
US2588420A (en) * 1948-08-18 1952-03-11 Saco Lowell Shops Textile drafting mechanism
US2931074A (en) * 1955-05-11 1960-04-05 Drafting apparatus for textile fibres
US2856643A (en) * 1958-02-10 1958-10-21 Whitin Machine Works Apparatus for drafting relatively long textile fibers

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470253A (en) * 1980-06-09 1984-09-11 Firma Zinser Textilmaschinen Gmbh Spinning frame, preferably ring spinning frame
DE3536085A1 (de) * 1985-10-09 1987-04-09 Zinser Textilmaschinen Gmbh Doppelriemchen-streckwerk
US5022123A (en) * 1988-09-29 1991-06-11 Murata Kikai Kabushiki Kaisha Draft mechanism having roller pairs connected to draft ratio controlled motors by timing belts
US5638580A (en) * 1994-12-09 1997-06-17 Hanol Spinning Co., Ltd. Method of spinning all-wool yarn on cotton system
US5950413A (en) * 1997-04-18 1999-09-14 Wellman, Inc. Spinning apparatus, method of producing yarns, and resulting yarns
US5970700A (en) * 1997-04-18 1999-10-26 Wellman, Inc. Drafting apparatus and method for producing yarns
US6035621A (en) * 1997-04-18 2000-03-14 Wellman, Inc. Spinning apparatus, method of producing yarns, and resulting yarns
US6250060B1 (en) * 1997-04-18 2001-06-26 Wellman, Inc. Method of producing improved knit fabrics from blended fibers
US6029318A (en) * 1997-12-18 2000-02-29 Zinser Textilmaschinen Gmbh Drafting frame for a spinning machine
US20150252497A1 (en) * 2014-03-06 2015-09-10 Jiangnan University Method for drafting spun yarns in three stages
US9719193B2 (en) * 2014-03-06 2017-08-01 Jiangnan University Method for drafting spun yarns in three stages

Also Published As

Publication number Publication date
DE1131569B (de) 1962-06-14
CH367093A (fr) 1963-01-31
GB920427A (de) 1900-01-01
FR1220510A (fr) 1960-05-25

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