US3105997A - Deflecting means for a doubling plate in a textile drafting apparatus - Google Patents

Deflecting means for a doubling plate in a textile drafting apparatus Download PDF

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Publication number
US3105997A
US3105997A US170920A US17092062A US3105997A US 3105997 A US3105997 A US 3105997A US 170920 A US170920 A US 170920A US 17092062 A US17092062 A US 17092062A US 3105997 A US3105997 A US 3105997A
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United States
Prior art keywords
rollers
slivers
drafting
sliver
doubling plate
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Expired - Lifetime
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US170920A
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English (en)
Inventor
Mackie John Kay Pringle
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James Mackie and Sons Ltd
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James Mackie and Sons Ltd
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G21/00—Combinations of machines, apparatus, or processes, e.g. for continuous processing

Definitions

  • This invention relates to machines for drafting textile slivers in which mechanism is provided for the automatic variation of the draft on the machine corresponding to the weight or thickness of the sliver being fed and is particularly concerned with such machines for the treatment of jute and other hast or leaf fibres.
  • the general principle of automatic draft control is well known and for this purpose thethickness of sliver enter ing a drawing frame or other form of drawing head is measured by a pair of measuring rollers and after a time delay corresponding to the interval during which the sliver in question is passing from the measuring rollers to the drafting Zone, the draft of the machine is adjusted in accordance with the thickness of the sliver, being increased for a sliver which is thicker than average and reduced for a sliver which is thinner than average.
  • each of the other slivers passes firstly through a slot in the doubling plate which is inclined at approximately 45 to the direction of travel of the sliver. This deflects the sliver through 90 and it then travels at right angles to its previous path until it reaches the line of the first sliver when it passes through a further 45 slot which turns it through a further right-angle and restores it to its original direction of motion but displaced sideways so as to be in alignment with the first sliver.
  • members are provided between the drafting rollers and the doubling plate to define paths for the individual slivers, these paths different in length in such a way that each sliver travels approximately the same distance between the drafting rollers and the delivery rollers. This compensates for the relative displacements brought about by the doubling plate and thus maintains the regularity of the emerging sliver while still retaining the effective operation of the standard form of doubling plate.
  • the compensation is sufliciently complete as to avoid affecting the long-term regularity of the sliver while at the same time the fact that there is a slight difference in the distances travelled by the individual slivers ensures that the faller marking is distributed substantially. uniformly over the whole "of each faller period.
  • the paths of the slivers are such that the sliver which suffers the greatest deflection by the doubling plate follows its normal path andis not deflected further while the paths of the other slivers are lengthened accordingly; These paths may be lengthened in a vertical direction by the provision adjacent the drafting rollers of members at the appropriate heights for the individual slivers so that each sliver passes upwardly'in contact with the surface of the drafting pressing roller, over its member, and then downwardly again and round a further roller before reaching the doubling plate.
  • FIGURE 1 is a digarammatic side view of the apparatus.
  • FIGURE 2 is a perspective view from the front showing the relationship between the drafting rollers, the doubling plate and the delivery rollers.
  • FIGURE 1 does not show the automatic draft control arrangement itself but this is controlled by measuring rollers 1 cooperating with feed rollers 2 for each sliver.
  • the feed rollers 2 turn about fixed bearings and the measuring rollers 1 are pressed downwardly to an extent depending on the thickness of the sliver.
  • the average of the deflection of the rollers 1 is derived mechanically and the draft applied to the machine is adjusted accordingly.
  • the sliver shown as 3 accordingly passes between the rollers 1 and 2, over a jockey roller 4, beneath a further feed roller 5 and thence to the drafting zone indicated generally at 6.
  • the slivers are drafted by means of a drafting roller 7 and an associated pressing roller 8 in the usual way, after which they pass to a doubling plate 9 of the normal construction as seen in more detail in FIGURE 2.
  • FIGURE 2 the individual slivers are shown as 3a, 3b, 3c and 3d and it will be seen that the sliver 3a is not deflected in any way by the doubling plate but merely passes. through in a straight line from its point of issue from the nip. of the drafting rollers.
  • the sliver 312 passes downwardly through a diagonal slot 12 which is inclined at 45 to the line of the sliver.
  • the sliver accordingly then passes beneath the doubling plate at right angles to its original direction of motion and then up through a further diagonal slot 13 from where it travels immediately beneath the sliver 3a to the delivery rollers 16 in the usual way.
  • sliver 30 passes downward-1y through a diagonal slot 14 and then up again through the slot 13.
  • the sliver 3d passes downwardly through a diagonal slot 15 and also up through the slot 13.
  • each sliver passes directly from the nip of the drafting rollers to its diagonal slot (apart from the sliver 3a which is not acted on by the doubling plate).
  • the sliver 3b travels a distance greater than the sliver 34 equal to the distance between the slots 12 and 13 and the slivers 3c and 3d also travel correspondingly greater distances. It is this relative displacement of the slivers which leads to the irregularity of the combined sliver referred to in detail above.
  • the paths of the various slivers between the drafting rollers and the delivery rollers are so adjusted as to make the total distances traveled approximately equal.
  • the paths of the slivers 3a, 3b and 3c are all extended in an upward direction while the path of the sliver 3d (which is the longest of the four paths) is not modified.
  • the sliver 3a passes upwardly in contact with the surface of the drafting pressing roller 8, over a small rod 20 and then down again and beneath a further driven roller 21.
  • the sliver 3b plasses up and over a small rod 22 mounted on a lower level than the rod 20 and from there down and beneath the common roller 21 before passing to the slot 12 the doubling plate.
  • the sliver 30 passes over a small rod 23 which is again mounted on a lower level than the rod 22 and again under the common roller 21 before passing to the slot 14 of the doubling plate.
  • the provision of a drive to the roller 21 avoids excessive tension in the slivers when starting the machine.
  • Guide plates shown as 25 and 26 extend between each rod 20, 22 and 23, to facilitate the threading of the slivers.
  • the heights of the additional rods 20, 22 and 23 are such as to extend the path lengths of the various slivers so as to make the total distances travelled approximately equal asv stated above.
  • the total distances travelled are not made precisely equal but differ from one another by a proportion of the faller period when the machine is operating at its standard mean draft. Ideally when four slivers are to be doubled together as shown, each total distance should differ from the next by an amount equal to one quarter of the faller period.
  • each is supported by an individual bar 27, 28 and 29 seen in FIGURE 1 but not in FIGURE 2.
  • These bars are screwed by their lower ends 30 into an extension of the doubling plate 9 and this screwed con nection permits the required axial adjustment of the bars to adjust the relative path lengths of the slivers.
  • drafting apparatus for the treatment of a plurality of parallel textile slivers
  • said apparatus including mechanism for the automatic control of the draft in accordance with the average thickness of said slivers when entering said apparatus, drafting rollers and delivery rollers
  • the novel combination which comprises: a doubling plate for the drafted slivers arranged intermediate said drafting rollers :and said delivery rollers whereby said slivers are superimposed before passing to said delivery rollers and all but one of said slivers are deflected in an increasing manner; and members mounted between said drafting rollers and said doubling plate, said members defining inversely increasing paths for all but said one of said slivers, said paths diiiering in length in such a way that each sliver travels approximately the same distance between said drafting rollers and said delivery rollers.
  • Apparatus according to claim 1 in which said mem: bers are so located that the total distances travelled by individual slivers between said drafting rollers and said delivery rollers, differ from one another by a proportion of the taller period when the machine is operating at its standard mean draft, so as to achieve a small relative lengthwise displacement of the slivers sufiicient to disperse the faller marking.
  • drafting apparatus for thet-reatment of a plurality of parallel textile slivers
  • said apparatus including mechanismfor the automatic control of the draft in accordance with the average thickness of said slivers when entering said apparatus, drafting rollers and delivery rollers
  • the novel combination which comprises: a doubling plate for the drafted slivers arranged intermediate saiddrafting rollers and said delivery rollers; a plurality of members mounted adjacent and above the level of slivers emerging from said drafting rollers; a further roller mounted adjacent said doubling plate in contact with all of said slivers, saidmembers and said further roller de-.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US170920A 1961-02-28 1962-02-05 Deflecting means for a doubling plate in a textile drafting apparatus Expired - Lifetime US3105997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7313/61A GB987982A (en) 1961-02-28 1961-02-28 Improvements relating to textile drafting apparatus

Publications (1)

Publication Number Publication Date
US3105997A true US3105997A (en) 1963-10-08

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Application Number Title Priority Date Filing Date
US170920A Expired - Lifetime US3105997A (en) 1961-02-28 1962-02-05 Deflecting means for a doubling plate in a textile drafting apparatus

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US (1) US3105997A (fr)
BE (1) BE614479A (fr)
GB (1) GB987982A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1660662B1 (de) * 1966-11-05 1971-10-21 Teijin Ltd Vorrichtung zum Regulieren der Spannung von unverstreckten Fadenkabeln
JPS4975832A (fr) * 1972-10-30 1974-07-22
US4038723A (en) * 1974-02-28 1977-08-02 Zellweger, Ltd. Method of and an arrangement for standardizing comber slivers
US4106166A (en) * 1976-03-10 1978-08-15 The Stearns & Foster Company Method for expanding the width of preformed fibrous webs
US4219911A (en) * 1976-03-10 1980-09-02 The Stearns & Foster Company Apparatus for expanding the width of preformed fibrous webs
EP0139236A3 (en) * 1983-10-10 1985-06-12 Maschinenfabrik Rieter A.G. Device for superimposing cotton wool webs
US6012277A (en) * 1993-11-23 2000-01-11 Commonwealth Scientific & Industrial Research Organisation Yarn spinning from fibre sub-assemblies with variation of their paths of travel, relative positions or twist levels

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US277606A (en) * 1883-05-15 Drawing-frame and art of drawing and doubling slivers
GB463447A (en) * 1935-10-12 1937-03-31 Jute Ind Ltd Multiple draft drawing frame for jute, flax, hemp, sisal and the like fibres
GB493143A (en) * 1936-03-02 1938-10-03 Siemens Ag An improved arrangement for the interchange of energy between direct current and alternating current mains

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US277606A (en) * 1883-05-15 Drawing-frame and art of drawing and doubling slivers
GB463447A (en) * 1935-10-12 1937-03-31 Jute Ind Ltd Multiple draft drawing frame for jute, flax, hemp, sisal and the like fibres
GB493143A (en) * 1936-03-02 1938-10-03 Siemens Ag An improved arrangement for the interchange of energy between direct current and alternating current mains

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1660662B1 (de) * 1966-11-05 1971-10-21 Teijin Ltd Vorrichtung zum Regulieren der Spannung von unverstreckten Fadenkabeln
JPS4975832A (fr) * 1972-10-30 1974-07-22
US3958305A (en) * 1972-10-30 1976-05-25 Zellweger, Ltd. Method of and an apparatus for uniformalizing combing machine slivers
US4038723A (en) * 1974-02-28 1977-08-02 Zellweger, Ltd. Method of and an arrangement for standardizing comber slivers
US4106166A (en) * 1976-03-10 1978-08-15 The Stearns & Foster Company Method for expanding the width of preformed fibrous webs
US4219911A (en) * 1976-03-10 1980-09-02 The Stearns & Foster Company Apparatus for expanding the width of preformed fibrous webs
EP0139236A3 (en) * 1983-10-10 1985-06-12 Maschinenfabrik Rieter A.G. Device for superimposing cotton wool webs
US4630337A (en) * 1983-10-10 1986-12-23 Rieter Machine Works Limited Apparatus for doubling a fiber web
US6012277A (en) * 1993-11-23 2000-01-11 Commonwealth Scientific & Industrial Research Organisation Yarn spinning from fibre sub-assemblies with variation of their paths of travel, relative positions or twist levels

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Publication number Publication date
BE614479A (fr) 1962-08-27
GB987982A (en) 1965-03-31

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