US2498364A - Arrangement for - Google Patents

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Publication number
US2498364A
US2498364A US2498364DA US2498364A US 2498364 A US2498364 A US 2498364A US 2498364D A US2498364D A US 2498364DA US 2498364 A US2498364 A US 2498364A
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United States
Prior art keywords
slipper
sliver
fibres
apron
rollers
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Expired - Lifetime
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English (en)
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Classifications

    • 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
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons

Definitions

  • sliv r, e s ron and m re ea y ha dled it ill berandt e ne d fo in r due ng wist or crim in to a ist ha d n s lim Wi h a hi h draft mo e v i may be P i e t e eetin one un t th des e d e o a te uation for whic o or more machine units are required with normal drafts.
  • d a in a ang nts draftin is effected by drawing fibres at a high speed by a pair of drawing rollers from a sliver retained at a lower speed by suitable means such as a pair of retaining rollers, in combination with breast plates, gill bars, carrier rollers, endless aprons or other intermediate devices.
  • the fibres delivered by the drawing rollers are twisted to form a yarn by revolving a yarn receiver and the yarn by suitable means.
  • the operation of twisting in addition to binding the fibres together in a permanent manner, performs also a greater or less proportion of the lateral condensation of the fibres, but the amount of condensing which can be achieved'by twisting is strictly limited. In other words, the fibres must be sufficiently condensed before leaving the drawing rollers to enable the twist to complete the condensing satisfactorily. If the fibres are not sufficiently condensed, a hairy yarn and excessive fly result, and this is a common defect experienced in high drafting.
  • the fibres may be laterally condensed before leaving the drawing rollers by interposing conductors between the retaining means and the drawing rollers. If, however, condensing in this way is overdone, some of the fibres are caused to be drawn in bunches or gulped, and production of irregular yarn results. This gulping appears 2 to be due to the fact that wherea at a point near he d aw rollers, whi h is e it al dra ting point, short fibres at the edges take a.
  • the object of this invention is, therefore, to remove the two ses d r nder it pos ble to spin even very unfavourable materials, such as jute, from as heavy slivers as is desirable.
  • the reach or distance between the drawing and the retaining roller pairs is as usual slightly greater than the longest fibre of the material to be drafted.
  • the part of the slipper resting on the fibrous material constitutes a condensing surface for the sliver.
  • the slipper is normally restrained from lateral movement by any conventional means (not shown).
  • the slipper may cover one or more slivers, and is provided with two lateral guides or confining surfaces for the sliver or for each sliver. These guides may extend lengthwise of the underside of the slipper, forming a channel in the latter, or, where the slipper covers only one sliver, it may be narrow, and guide plates confining the sliver laterally may be placed one on each side of it.
  • the lateral guides may extend the full length of the slipper or only part thereof.
  • the guides, which form a channel on the underside of the slipper may rest on the apron; or the lateral walls of the channel, functioning as guide plates, may with the slipper enshroud a narrow apron.
  • deep guide plates confining the sliver laterally may extend from a region above the lower flight of an upper endless apron to below the upper flight of a lower endless apron.
  • a substantially closed passage for the sliver is formed by the condensing surface of the slipper or upper apron, the confining surfaces and the carrying surface of thelower apron. This passage converges from the retaining rollers toward the drawing rollers over at least a portion of its extent. Consequently, during travel through this passage, the sliver is confined and laterally condensed.
  • Fig. l is a side elevation of the drafting zone of a textile spinning frame incorporating one construction according to the invention.
  • Fig. 2 is a view in the direction of the arrow A in Fig. 1 showing a slipper member.
  • Fig. 3 is a cross section of the arrangement shown in Fig. 1.
  • Fig. 4 is a view corresponding to Fig. 3 showing a modified form of the slipper member.
  • Figs. 5 and 6 are views corresponding to Fig.; 3 showing arrangements of guide plates in conjunction with two aprons.
  • Figs. 7 and 8 are elevations at right angles to one another showing a modification of the arrangement shown in Figs. 1 and 2.
  • Figs 9 and 10 are elevations at right angles to one another showing a further modification.
  • Figs. 1-3 of the drawings 20, 2
  • an endless flexible apron 26 which is driven at a speed only slightly in excess of that of the retaining rollers and which serves to support the sliver 3
  • 2'! denotes a metal slipper of inverted channel form in cross section which rests upon the sliver 3i and is weighted at 28.
  • Fig. 4 shows a modification of the construction shown in Figs. 1-3 in which the sides of the slipper i. e. the flanges of the inverted channel 21', enshroud narrow apron 26b.
  • Fig. 5 a further modification is shown in which guide plates 40 are positioned at the sides of narrow apron 26' and above a broader lower apron 26".
  • Fig. 6 deep guide plates 39 enshroud both upper travelling apron 26a and lower travelling apron 26b.
  • Figs. 7 and 8 show a narrow slipper 31 at both sides of which are mounted upstanding stationary guide plates 38.
  • Conductor 24 is mounted ahead of retaining rollers 20, 2
  • Slipper member 31 has an upstanding ridge 4
  • Guide plates 38 diverge at their upper ends to allow easy entrance of sliver 3i therebetween.
  • Mechanism for drafting fibres in a textile spinning machine comprising retaining means, drawing rollers, a travelling apron for carrying the fibres from the retaining means to the drawing rollers, a condensing. surface extending in the direction of travel of and above the carrying portion of the travelling apron and converging toward said portion of the apron in the direction of travel thereof, a pair of confining surfaces 2.
  • the mechanism of claim 1 in which the condensing surface and the confining surfaces are sides of a slipper of inverted channel shape in cross section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US2498364D 1947-06-03 1948-07-29 Arrangement for Expired - Lifetime US2498364A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14722/47A GB630036A (en) 1947-06-03 1947-06-03 Improvements in arrangements for drafting and twisting fibrous material in spinning frames

Publications (1)

Publication Number Publication Date
US2498364A true US2498364A (en) 1950-02-21

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ID=10046328

Family Applications (1)

Application Number Title Priority Date Filing Date
US2498364D Expired - Lifetime US2498364A (en) 1947-06-03 1948-07-29 Arrangement for

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US (1) US2498364A (en, 2012)
BE (1) BE482905A (en, 2012)
GB (1) GB630036A (en, 2012)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661503A (en) * 1948-07-22 1953-12-08 Warner Swasey Co Rectangular condenser for pin drafters
US2774995A (en) * 1951-10-26 1956-12-25 Warner Swasey Co High reduction fiber drafting
US2840860A (en) * 1953-03-20 1958-07-01 George F Raper Drafting slivers of fibrous materials
US2890494A (en) * 1954-04-15 1959-06-16 Tmm Research Ltd Drafting mechanisms for textile processing machinery
DE1166060B (de) * 1960-07-05 1964-03-19 Mackie & Sons Ltd J Doppelriemchenstreckwerk fuer Spinnmaschinen mit schmalen Riemchenkaefigen, insbesondere fuer Wolle und gekraeuselte kuenstliche Fasern
US3130454A (en) * 1960-04-19 1964-04-28 Mackie & Sons Ltd J Textile drafting apparatus
US3145431A (en) * 1960-10-17 1964-08-25 Dixie Machine & Tool Company Means for controlling the fibers in a strand of a textile drafting apparatus
US5704096A (en) * 1995-10-07 1998-01-06 Fritz Stahlecker Drafting arrangement for spinning machines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1104408B (de) * 1953-10-07 1961-04-06 George Frederick Raper Faserbandverdichter fuer Streckwerke an Spinnereimaschinen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1448192A (en) * 1920-12-03 1923-03-13 Butler Arthur Cecil Drawing mechanism
US1448191A (en) * 1923-03-13 Drawing mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1448191A (en) * 1923-03-13 Drawing mechanism
US1448192A (en) * 1920-12-03 1923-03-13 Butler Arthur Cecil Drawing mechanism

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661503A (en) * 1948-07-22 1953-12-08 Warner Swasey Co Rectangular condenser for pin drafters
US2774995A (en) * 1951-10-26 1956-12-25 Warner Swasey Co High reduction fiber drafting
US2840860A (en) * 1953-03-20 1958-07-01 George F Raper Drafting slivers of fibrous materials
US2890494A (en) * 1954-04-15 1959-06-16 Tmm Research Ltd Drafting mechanisms for textile processing machinery
US3130454A (en) * 1960-04-19 1964-04-28 Mackie & Sons Ltd J Textile drafting apparatus
DE1181595B (de) * 1960-04-19 1964-11-12 Mackie & Sons Ltd J Doppelriemchenstreckwerk fuer Spinnereimaschinen
DE1166060B (de) * 1960-07-05 1964-03-19 Mackie & Sons Ltd J Doppelriemchenstreckwerk fuer Spinnmaschinen mit schmalen Riemchenkaefigen, insbesondere fuer Wolle und gekraeuselte kuenstliche Fasern
US3136006A (en) * 1960-07-05 1964-06-09 Mackie & Sons Ltd J Textile sliver drafting machines
US3145431A (en) * 1960-10-17 1964-08-25 Dixie Machine & Tool Company Means for controlling the fibers in a strand of a textile drafting apparatus
US5704096A (en) * 1995-10-07 1998-01-06 Fritz Stahlecker Drafting arrangement for spinning machines

Also Published As

Publication number Publication date
BE482905A (en, 2012) 1948-06-30
GB630036A (en) 1949-10-04

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