US3643843A - Yarn supply chamber - Google Patents

Yarn supply chamber Download PDF

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Publication number
US3643843A
US3643843A US11072A US3643843DA US3643843A US 3643843 A US3643843 A US 3643843A US 11072 A US11072 A US 11072A US 3643843D A US3643843D A US 3643843DA US 3643843 A US3643843 A US 3643843A
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US
United States
Prior art keywords
chamber
yarn
bars
supply chamber
reserve supply
Prior art date
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
Application number
US11072A
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English (en)
Inventor
Jiri Havlas
Premysl Kostelecky
Zdenek Holy
Jeromir Rydio
Vlastimil Rejnart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elitex Zavody Textilniho
Original Assignee
Elitex Zavody Textilniho
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Elitex Zavody Textilniho filed Critical Elitex Zavody Textilniho
Application granted granted Critical
Publication of US3643843A publication Critical patent/US3643843A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • ABSTRACT A yarn supply chamber formed of regularly displaced, generally longitudinally extending bars connected at one end by a yam introducing mechanism and at the other end by a closure having a yarn discharge orifice.
  • the bars may be disposed at an angle of from about 0to 20 with respect to the longitudinal axis of the chamber, the chamber preferably increasing in diameter in the direction of passage of yarn therethrough.
  • the chamber virtually eliminates the formation of loops in the yarn reserve supply. Upon the interruption of the feeding of yarn into the chamber while continuing its withdrawal, the discharge end of the chamber remains substantially uniformly filled with yarn.
  • the present invention relates to a yarn supply chamber for forming a yarn reserve during rewinding yarn in textile machines, particularly in automatic winding machines.
  • Time losses substantially affect the productivity of modern high speed textile machines.
  • the said time losses are caused, to a considerable extent, by the interruption of yarn flow; they were considerably reduced by using yarn knotters able to knot the broken yarn together in about one two-hundredths second.
  • Such yarn knotters are very expensive, due to their accuracy and the frequent maintenance adjustments and the like which they require.
  • a rewinding device which employs a yarn knotter of simple construction and working at a substantially lower speed.
  • a yarn reserve is formed in a supply chamber, such yarn reserve being sufficient for carrying on the yarn withdrawal during the time in which the knotting of the broken yarn takes place.
  • the supply chamber is substantially a perforated vessel, or a wire net, into which a pneumatic nozzle for conveying yarn discharges, said perforated vessel or wire net being provided at its bottom with an opening for withdrawing yarn therefrom.
  • Such an embodiment has several disadvantages, the most important of which is an uneven filling and advancement of the accumulated yarn in the supply chamber; this encourages the formation of loops on the yarn, the loops becoming intermingled and causing yarn breakage,
  • the present invention has for its object the removal of the said disadvantages; it provides a yarn supply chamber such that upon the interruption of the feeding of yarn into said chamber while continuing its withdrawal, the discharge end of said chamber should remain filled with the yarn as uniformly as possible.
  • the supply chamber is formed of regularly displaced generally longitudinally extending bars disposed at an angle of from to 20 with respect to the longitudinal axis of said chamber. Said bars are located with one of their ends in the body ofthe yarn introducing mechanism and with the other discharge end in a ring provided with a lid.
  • the chamber preferably increases in diameter in the direction of passage of yarn therethrough.
  • FIG. 1 is a view in longitudinal axial section through a frustoconical supply chamber
  • FIG. 2 is a cross section through the supply chamber taken along line 2-2 of FIG. 1;
  • FIG. 3 is a view in end elevation of the lid at the exit of the supply chamber, the view being taken from line 33 of FIG.
  • FIG. 4 is a plan view of the lid
  • FIG. 5 is a schematic view of the passage of yarn through the supply chamber of FIGS. 1 to 4;
  • FIG. 6 is a somewhat schematic view in side elevation of a cylindrical supply chamber.
  • the supply chamber 1 of FIGS. 1 to 5 for the yarn 2 is made in the form of a frustoconical vessel having a vertex angle a of from 0 to about 40.
  • the housing of the said vessel is formed of circular cylindrical bars 3, which are mounted by one of their ends in the body of the yarn introducing mechanism.
  • such mechanism is a pneumatic nozzle 4, represented partially in FIGS. 1 and 5, and with the other ends of the bars being mounted in a ring 5.
  • the bars 3 are spaced evenly about the pneumatic nozzle 4 and the ring 5; each bar is disposed at an angle of 0 to with respect to the axis of the yarn supply chamber 1.
  • the distance between said bars is chosen such as to enable the pressure fluid, or-
  • the distance between the confronting surfaces of successive bars 3 can be constant about their whole length, or can increase in the direction towards the discharge end of the supply chamber 1.
  • the bars 3 shown are circular cylindrical. However, they can be also of another shape, e.g., conical, but they must fulfill the condition of either maintaining a constant mutual distance between the confronting surfaces of successive bars or a condition in which such distance increases in the direction towards the end of the supply chamber 1; the latter applies particularly in the case of using cylindrical bars 3.
  • the end of the supply chamber 1 is closed by a swingable lid 6 fastened by means of a screw 7 to the ring 5.
  • a channel 8 is made in said lid 6.
  • the yarn 2 is inserted by the pneumatic nozzle 4 into the space of the supply chamber 1 and is simultaneously withdrawn through the channel 8 of lid 6 in the direction S.
  • the velocity at which the yarn 2 is initially fed is chosen to be higher than the velocity of yarn withdrawal, thus forming a yarn supply in the supply chamber 1, which is gradually uniformly filled with said supply.
  • the supply chamber 1 is provided with control elements (not shown), which interrupt the operation of the pneumatic nozzle 4 when the supply chamber 1 becomes filled. Such control elements function in dependence upon the position of lid 6, thus compensating the feeding and withdrawal of yarn 2.
  • FIG. 6 illustrates a second embodiment of the yarn supply chamber of the invention, wherein the same reference characters are employed with primes to designate parts similar to those in FIGS. 1 to 5, incl.
  • the chamber 1' is circular cylindrical, that is, the angle a (corresponding to that of FIG. 1) is O.
  • the bars 3' are circular cylindrical rods which are spaced at equal angles about the axis of the chamber 1.
  • a chamber for a yarn reserve supply said chamber being formed of longitudinally extending bars disposed substantially regularly spaced from each other throughout their lengths and about the axis of the chamber, the surfaces of the bars which lie radially outwardly of the chamber being in immediate contact with the atmosphere, means at a first, entrance end of the chamber for feeding yarn and air under pressure thereinto, an abutment substantially spanning the second, discharge end of the chamber, and means providing a discharge passage for the yarn from the second end of the chamber, pressure air escaping from the chamber directly to the atmosphere through the longitudinally extending spaces between successive bars.
  • a yarn reserve supply chamber according to claim 1, wherein the bars are located upon a surface of revolution.
  • a yarn reserve supply chamber wherein each of the bars forms an angle between 0 and about 20 with the longitudinal axis of the chamber, with any of said values of the angle except 0 the bars diverging from each other in the direction from the first to the second end of the chamber.
  • a yarn reserve supply chamber according to claim 1, wherein successive bars are spaced from each other a distance which is substantially constant along the length of the chamber and is substantially the same from one bar of bars to the next.
  • a yarn reserve supply chamber according to claim 1, wherein the bars are frustoconical, and the distance between the confronting surfaces of successive bars along the length thereof is substantially constant.
  • a yarn reserve supply chamber according to claim 1, wherein the bars are frustoconical, and the distance between the confronting surfaces of successive bars along the length thereof increases in the direction from the first to the second end of the chamber.
  • a yarn reserve supply chamber according to claim 1, wherein the bars are circular cylindrical.
  • a yarn reserve supply chamber according to claim 1, wherein the bars are mounted and held by a part of the yarn feeding means at the first end of the chamber, and by a ring at the second end of the chamber 9.
  • a yarn reserve supply chamber according to claim 8, wherein the abutment at the second end of the chamber is in the form ofa lid mounted upon said ring.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US11072A 1969-02-21 1970-02-13 Yarn supply chamber Expired - Lifetime US3643843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS125869A CS152543B1 (en)) 1969-02-21 1969-02-21

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US3643843A true US3643843A (en) 1972-02-22

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Application Number Title Priority Date Filing Date
US11072A Expired - Lifetime US3643843A (en) 1969-02-21 1970-02-13 Yarn supply chamber

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CS (1) CS152543B1 (en))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103404A (en) * 1976-07-13 1978-08-01 Bayer Aktiengesellschaft Nozzle device for the production of texturized filament yarns
US5150906A (en) * 1989-03-10 1992-09-29 Lisco, Inc. Multi-piece golf balls and methods of manufacture
US6543104B2 (en) * 2000-09-01 2003-04-08 Maschinenfabrik Rieter Ag Yarn texturing nozzle
CN101838880A (zh) * 2009-03-18 2010-09-22 意达（瑞士）有限公司 织机中用于纬纱储存的方法和储存装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303546A (en) * 1964-07-22 1967-02-14 British Nylon Spinners Ltd Apparatus for treating filamentary material in a fluid
US3353239A (en) * 1964-02-01 1967-11-21 American Enka Corp Yarn texturizing method and apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353239A (en) * 1964-02-01 1967-11-21 American Enka Corp Yarn texturizing method and apparatus
US3303546A (en) * 1964-07-22 1967-02-14 British Nylon Spinners Ltd Apparatus for treating filamentary material in a fluid

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103404A (en) * 1976-07-13 1978-08-01 Bayer Aktiengesellschaft Nozzle device for the production of texturized filament yarns
US5150906A (en) * 1989-03-10 1992-09-29 Lisco, Inc. Multi-piece golf balls and methods of manufacture
US6543104B2 (en) * 2000-09-01 2003-04-08 Maschinenfabrik Rieter Ag Yarn texturing nozzle
CN101838880A (zh) * 2009-03-18 2010-09-22 意达（瑞士）有限公司 织机中用于纬纱储存的方法和储存装置

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Publication number Publication date
CS152543B1 (en)) 1974-02-22

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