US2230399A - Yarn manufacture - Google Patents

Yarn manufacture Download PDF

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Publication number
US2230399A
US2230399A US93592A US9359236A US2230399A US 2230399 A US2230399 A US 2230399A US 93592 A US93592 A US 93592A US 9359236 A US9359236 A US 9359236A US 2230399 A US2230399 A US 2230399A
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United States
Prior art keywords
rolls
strand
draft
stock
guide
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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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US93592A
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English (en)
Inventor
Carl D Brandt
Otto W Schlums
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Whitin Machine Works Inc
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Whitin Machine Works Inc
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Filing date
Publication date
Priority to GB497276D priority Critical patent/GB497276A/en
Application filed by Whitin Machine Works Inc filed Critical Whitin Machine Works Inc
Priority to US93592A priority patent/US2230399A/en
Application granted granted Critical
Publication of US2230399A publication Critical patent/US2230399A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides

Definitions

  • the invention is an improvement in yarn manufacture and its object, in general, is to reduce the number of operations, and the number of machines required, for converting drawingframe sliver into yarn of good quality, or to perform those usual operations with better results, and more particularly the object is to provide a practical process and apparatus for reducing drawing-frame sliver by one passage through one machine to the condition of roving, ready for the spinning-frame, and this special application of the invention is described herein by way of illustration of the new principles involved.
  • FIGs. 1 and 2 represent in vertical section and partial plan respectively, the essential parts of such a one-passage machine embodying the improvements referred to Fig. 3 being a perspective of the guide, Fig. 4 a modification of its adjustment, and Fig. 5 a preferred form of sliver trumpet.
  • the sliver direct from the can or otherwise, is run through a plurality of pairs, or groups of pairs of draft rolls, driven at successively higher speeds and collectively imparting the degree of attenuation or draft that is necessary for reducing the sliver to the roving size desired.
  • the sliver which will be understood to be a strand or rope of fibres, substantially round in section and containing little or no twist, may range in weight between say 25 and 80 grains, and the roving derived therefrom may range from 1.35 to 9.5 hank.
  • the invention has been conceived and developed in connection with the manufacture of cotton yarn and spun rayon but is not limited to these fibres.
  • the draft couple represented by the pairs of rolls I I and 2 2, and which may be referred to as representing the initial draft stage of the system, may have a speed ratio or draft of say about six.
  • the draft of the couple 2 2 and 3 3 may be just enough above unity as will suffice to keep a desirable tautness in the stock passing from one pair of rolls to the other, say from 1.05 to 1.1, while the draft of the couple 3 3 and 4 4 will be such as to impart the remainder of the necessary total draft required, say up to as much as 7 or 10.
  • the drafted stock or roving proceeds to the spindle (not shown) by which it is twisted or spun as the case may be.
  • the spread-out fibres of the flattened strand emerging from rolls 2 2 are preserved in that identical arrangement and are conducted, without reassembly, to the bite of the rolls (or aprons) of the next succeeding draft stage, and introduced into the latter in what may be called an edgewise relation, which is'to say, with the flatwise dimension of the strand in a planev at substantially 90 to the bite-line of the rolls.
  • the spreading effect of the first rolls is thus neutralized by the succeeding rolls and the succeeding drafting is thereby done on a narrow strand which is composed of fibres practically undisturbed from their first treatment.
  • the conducting element by which the strand is thus guided turns it to the edgewise position against the tendency which the strand has to assume its natural flat path from one pair of rolls to the other, and in order to be effective for this purpose, as we have found, should engage the fiat face of the strand by a considerable length of spread of guiding surface as otherwise the strand, in striving to regain its natural path tends to crush itself against the wall or walls of the guide, which latter then becomes no different in effect from the ordinary trumpet and produces a general rearrangement of the fibers which it is the important object of this invention to avoid.
  • the guide shown comprises 'a plate l, which is bent, cast or otherwise contrived to provide a twisted or skew guidance surface, so that the strand of stock entering onto its more nearly horizontal end and travelling along it will be thereby gradually turned a quarter-turn, or to edgewise position.
  • the guide is carried on a traverse bar 9, mounted to reciprocate back andrforth in step with the traversing trumpet 6, the purpose of the traversing being as usual to avoid irregular wear of the rolls or aprons.
  • the guiding function of the skew plate l is supplemented by the use of an adjacent complementary plate I of somewhat the same surface contour, but of shorter length, and such as to form with the plate 8 a narrow and slightly convergent crevice through which the at strand 'passes and by which it is supported in the edgewise position and also somewhat condensed. It is best that both these plates be set to guide the stock close up into the bite of the aprons 5 5 for winch purpose their exit ends are pointed as indicated at Il in the drawing, thus to give the closest possible entry. This also increases the length of the guiding or turning surface which thus extends practically the full distance between the roll bites.
  • the crevice-forming surfaces are so contoured with reference to the grasping action which the aprons have on the fibres, as to preserve and continue the flat 'section of the strand right up to the bite-line or as close to it as possible.
  • the appropriate contouring is represented by a slight flaring of the proximate surfaces of the points Il, making the width of the crevice slightly wider between the points than immediately back of them, thereby counteract-A ing a tendency for the strand to become thinner along its center as it approaches the aprons.
  • the sliver is given a flattened form as it enters the first stage of the system. This is done by making the trumpet 6 with a horizontally oblong or rectangular orifice l2, rather than with the usual round hole.
  • the auxiliary plate l0 is clamped to the base structure of the skew plate 8 by means of a set screw I3, by the use of which the width of the guiding slot or crevice can be adjusted.
  • a modified and practical adjustment means is shown in Fig. 4, wherein the conductor plates l and I0, representing the series of guides between two lines of draft rolls, are respectively carried on parallel, companion traverse bars 9 and appropriately mounted for endwise reciprocation, and these bars are adjustable relatively to each other by some such means as that indicated at Ha, so as to provide the convenience of adjusting simultaneously the crevices of several or all of the guides in the 2,2so,s99 v frame.
  • the conductor produces less lint or fly than even an ordinary trumpet but yet reliably maintains the fiat section and edgewise entry of the strand over a considerable range of variation of sliver weight.
  • the width of the crevice is adjusted accordingly and in all cases insures the flat section and edgewise entry.
  • a roving guide between pairs of rolls comprising relatively stationary opposed convergent substantially flat surfaces extended in the direction of stock travel for conducting fibrous stock from the first pair to the second and having a condensing action on such stock only in the direction of the action thereon of the roll pressure of said first pair.
  • a roving guide located between pairs of horizontal rolls and comprising two adjacent plates forming a vertical crevice between them, said plates having pointed ends extending toward the bite of the receiving pair of rolls and adapted to deliver stock to the latter in edgewise relation.
  • each guide comprising opposed guiding surfaces, and said surfaces of each guide being respectively carried on companion traverse bars which -are relatively adjustable to control simultaneously the size of the passageways through all said guides.
  • means for quarter-turning strands of stock passing from one line of rolls to another line of rolls comprising a series of guides having crevices for the respective ⁇ strands, means for simultaneously traversing said guides and means for simultaneously adjusting the widths of all of said crevices.
  • the rst delivering a att'ened strand of roving to the second, and a guide between the groups comprising opposed vertical surfacesforming a convergent upwardly open crevice between them adapted to guide the nattened strand in edgewise position into the second group.
  • the combination with two successive groups of roving-drafting rolls, of means for quarter-turning the flattened strand from the iirst into edgewise position for entry into the second, comprising a roving conductor having opposed elements adjacent the second group forming between them a vertical substantially ilat crevice, one of said elements extending into proximity to the first group and forming a supporting surface for the :dat side of the brous strand delivered thereby.
  • the combination with a delivering and a receiving group of rolls, of a roving conductor between said groups adapted for quarter-turning the attened iibrous strand emerging from one group to edgewise position for entry into the other group and including a supporting surface for the at side of the strand which extends for substantially the full distance between said groups.
  • the combination of two groups of pairs of rolls and a quarter-turn roving conductor between them comprising members having opposed surfaces, adapted to support the at sides of the strand passing from one group to the other, said surfaces being substantially parallel but contoured to relieve the pressure at the center of the strand leaving said conductor.
  • two successive groups of pairs of draft rolls and stock-conducting means comprising a preliminary conductor for giving the iibrous stock a iiat section for the action of the rollsA of the rst group and an intermediate conductor for guiding the at stock from that group into edgewise entry into the second group, said latter conductor comprising a receiving part disposed at an inclination from vertical and a delivery part providing a vertical crevice closely adjacent to the second group of rolls.
  • a roving guide adapted for quarter-turning a flattened iibrous strand emerging from a pair of rolls and delivering it in edgewise relation to another pair, comprising two members with opposed convergent substantially ilat surfaces forming a vertical crevice located closely adjacent to the receiving rolls, and open at the top for easy introduction of the flat strand when threading up, one of said members being extended toward the other pair oi rolls and there located in a position to support a at side of the strand and partially turn the strand as it approaches the vertical position.
  • a guide for quarter-turning a attened strand oi roving emerging from a pair of rolls and delivering it in edgewise position to another pair of rolls comprising two opposed, convergent surfaces forming a vertical crevice between them at the end of the guide that is adjacent to the receiving rolls, one of said surfaces being skewed toward the other end of the guide, forming a con'- tinuously smooth support for a fiatside of the strand adapted to start the turning of the strand before it reaches its vertical position in said crev.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US93592A 1936-07-31 1936-07-31 Yarn manufacture Expired - Lifetime US2230399A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB497276D GB497276A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1936-07-31
US93592A US2230399A (en) 1936-07-31 1936-07-31 Yarn manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US93592A US2230399A (en) 1936-07-31 1936-07-31 Yarn manufacture

Publications (1)

Publication Number Publication Date
US2230399A true US2230399A (en) 1941-02-04

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Application Number Title Priority Date Filing Date
US93592A Expired - Lifetime US2230399A (en) 1936-07-31 1936-07-31 Yarn manufacture

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US (1) US2230399A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB497276A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472929A (en) * 1945-03-23 1949-06-14 Jan V Weinberger Double condenser high draft mechanism for roving and spinning frames
US2591866A (en) * 1947-12-22 1952-04-08 Avondale Mills Condenser for long draft spinning
US2629900A (en) * 1941-06-24 1953-03-03 Lemaire Jacques Philippe Drawing-head of spinning machines
US2775792A (en) * 1953-03-31 1957-01-01 Monsanto Chemicals Process and apparatus for treatment of fibers
US2813307A (en) * 1952-05-16 1957-11-19 Warner Swasey Co Drafting head
US3303534A (en) * 1963-08-21 1967-02-14 S O M Andreani & C Double apron drafting system for drawing frames
US3727391A (en) * 1971-11-04 1973-04-17 Du Pont Apparatus for drafting and twisting fibers
US4470253A (en) * 1980-06-09 1984-09-11 Firma Zinser Textilmaschinen Gmbh Spinning frame, preferably ring spinning frame
US4667463A (en) * 1978-03-24 1987-05-26 Toray Industries, Inc. Process and apparatus for making fasciated yarn
US4979270A (en) * 1989-08-03 1990-12-25 Burlington Industries, Inc. Apparatus and methods for converting tow into staple

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629900A (en) * 1941-06-24 1953-03-03 Lemaire Jacques Philippe Drawing-head of spinning machines
US2472929A (en) * 1945-03-23 1949-06-14 Jan V Weinberger Double condenser high draft mechanism for roving and spinning frames
US2591866A (en) * 1947-12-22 1952-04-08 Avondale Mills Condenser for long draft spinning
US2813307A (en) * 1952-05-16 1957-11-19 Warner Swasey Co Drafting head
US2775792A (en) * 1953-03-31 1957-01-01 Monsanto Chemicals Process and apparatus for treatment of fibers
US3303534A (en) * 1963-08-21 1967-02-14 S O M Andreani & C Double apron drafting system for drawing frames
US3727391A (en) * 1971-11-04 1973-04-17 Du Pont Apparatus for drafting and twisting fibers
US4667463A (en) * 1978-03-24 1987-05-26 Toray Industries, Inc. Process and apparatus for making fasciated yarn
US4470253A (en) * 1980-06-09 1984-09-11 Firma Zinser Textilmaschinen Gmbh Spinning frame, preferably ring spinning frame
US4979270A (en) * 1989-08-03 1990-12-25 Burlington Industries, Inc. Apparatus and methods for converting tow into staple

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Publication number Publication date
GB497276A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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