EP0913512A1 - Verfahren und Vorrichtung zur Herstellung von Pompons - Google Patents

Verfahren und Vorrichtung zur Herstellung von Pompons Download PDF

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Publication number
EP0913512A1
EP0913512A1 EP97308440A EP97308440A EP0913512A1 EP 0913512 A1 EP0913512 A1 EP 0913512A1 EP 97308440 A EP97308440 A EP 97308440A EP 97308440 A EP97308440 A EP 97308440A EP 0913512 A1 EP0913512 A1 EP 0913512A1
Authority
EP
European Patent Office
Prior art keywords
loop
loops
yarn
tassel
chain
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.)
Withdrawn
Application number
EP97308440A
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English (en)
French (fr)
Inventor
John Richard Newgas
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP97308440A priority Critical patent/EP0913512A1/de
Publication of EP0913512A1 publication Critical patent/EP0913512A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/20—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting articles of particular configuration
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04D—TRIMMINGS; RIBBONS, TAPES OR BANDS, NOT OTHERWISE PROVIDED FOR
    • D04D7/00—Decorative or ornamental textile articles
    • D04D7/04—Three-dimensional articles
    • D04D7/08—Tassels or tasselled fringes
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/03—Shape features
    • D10B2403/031—Narrow fabric of constant width
    • D10B2403/0311—Small thickness fabric, e.g. ribbons, tapes or straps

Definitions

  • This invention relates to an apparatus and method for producing tassels.
  • a method for producing a tassel including the steps of forming a chain of stitches from at least one elastic yarn while holding the yarn under tension, inlaying at least one further yarn into loops of said stitches as they are formed to produce at least one yarn loop from which a tassel tuft is to be formed and at least one further yarn loop extending away from said tassel tuft loop to produce a hanging loop for the tassel, said further loop having opposite loop ends which are each woven into a plurality of elastic thread stitches.
  • said tassel loop is formed from a first one or more weft yarns
  • said further loop or at least one said further loop is formed from a second one or more weft yarns and, between the loop ends of said further loop, said at least one tassel loop yarn or yarns and said further loop yarn or yarns are displaced relative to each other in a direction transverse to the plane of the loops. It is found that such a step can improve the appearance at the top of the tuft where the gathered loops are intended to simulate the knot or head of a conventional tassel.
  • At least one further length of yarn is used to form only tufts of the tassels and an additional length of yarn is used to form the hanging loops.
  • the hanging loop yarn is also possible to use the hanging loop yarn to also form a tassel tuft loop, preferably to supplement one or more separate further yarn loops of the tassel tuft.
  • a method for forming tassels including the steps of producing a stitch chain from at least one elastic yarn while holding the yarn under tension, forming at least one loop of tassel yarn which is inlaid with stitches of the tensioned chain as they are produced, forming a loop from a further yarn to provide a hanging loop comprising two legs joined by a bend spaced away from said at least one tassel yarn loop, the end of each leg of said hanging loop being engaged with a plurality of said stitches of the tensioned chain and, between said ends of said further loop, displacing said tassel and hanging loop yarns relative to each other in a direction transverse to the loops and said stitch chain to reverse the positions of said yarns in said direction at least once in the course of the loops of a tassel, said yarn loops being gathered together by release of tension in the elastic chain and said gathered loops, each with a hanging loop, being separated by severing the chain to form the individual
  • apparatus for use in producing tassels comprising means for forming at least one elastic warp yarn chain under tension, means for forming a first series of loops of weft yarn and inlaying one end region of said loops with spaced groups of stitches of said warp yarn chain, means for forming at least one further weft yarn loop for each said group of stitches with each of a pair of legs of said further loop engaged with a plurality of stitches of said group of stitches, and with a bend of the loop joining said legs spaced from the associated loop or loops of the first series, and means for severing the first series of loops remote from said one end region to form a series of individual tufts extending from said end region, whereby each said further loop can provide a hanging loop for the associated tufts of said loop or loops of the first series.
  • means are also provided for relative displacement between the yarn forming said first series of logs and said further loops to reverse the positions of said yarns in a direction transverse to the stitch chain and said first series of loops at least once during the formation of the first series of loops.
  • Warp guides 2 for a series of warp yarns are mounted at the required locations on a warping bar 4.
  • Each guide has an eye 2a at its leading end through which a warp yarn is threaded and, in known manner, it is connected to a drive mechanism, which is not shown in the drawing, to perform a circulatory motion by reciprocation of the bar 4 and vertical rocking of the warp guides on the bar.
  • a trick plate or bed 6 extending parallel to the bar, transversely across the machine frame where a series of conventional barbed or latch needles 8, one for each warp yarn, are mounted side by side and are slidable in respective slots 6a of the trick plate towards and away from the warping bar.
  • Guide tubes 10 for weft inlay yarns are mounted on carrier rods 12 above a hold-back bar 14 located between the warp guides and the trick plate.
  • the carrier rods 12 are axially displaceable parallel to the hold-back bar 14 to move the guide tubes 10 transversely of the machine frame, and are rotatable on their own axes to move the guide tubes forwards and backwards.
  • the guide tubes 10 are also displaceable upwardly and downwardly on the carrier rods 12.
  • Retainer hooks 18 mounted on pivots (not shown) below the hold-back bar 14 project above the bar and are pivotable rearwardly and downwardly onto the top surface of the bar to hold the weft yarns as they are laid by the guide tubes 10.
  • the warp yarns fed through are formed into stitch chains or wales by the motions of the yarn guides and needles in known manner (see, for example "Knitting Technology” (2nd Edn.), D.J Spencer, Pergamon Press, 1989, pages 283-287).
  • the chains are drawn downwardly over the rear of the hold-back bar 14 by tensioning rollers 24.
  • the rollers 24 apply a tension that extends the elastic yarns A,B to several times their relaxed length.
  • Other numbers and grouping of the warp yarns can be used, but in most instances there will be at least one pair of closely spaced elastic warp yarns.
  • the illustrated example shows two displaceable weft guide tubes 10, one of which carries a single weft yarn C that will be termed the loop yarn and the other of which carries a pair of weft yarns D that will be termed skirt yarns.
  • more tubular weft guides and more weft yarns can be employed, and any of the guide tubes may carry single or multiple yarns, but in most instances only a single loop yarn will be required and the loop yarn will be supplied through its own guide tube.
  • the mechanisms described are operated in sequence by a micro-processor 30, as shown schematically in Fig. 2, which has a store 32 into which the required cycle of operations can be programmed.
  • the microprocessor 30 has a central processing unit 34 for actuating and coordinating the operations of a tensioning roller drive control unit 36 for actuating a tensioning roller drive 38, a crochet stitch control unit 40 for actuating warp guide drives 42 and barbed needle drives 44, a weft yarn axial control unit 46 for actuating the drives 48 displacing the weft guide tubes 10 axially of the carrier rods 12, a weft yarn rotary control unit 50 for actuating the drives 52 displacing the weft guide tubes 10 forwards and rearwards, a retainer hook drive control 52 for actuating drives 54 each pivoting a respective retainer hook, and a knife control unit 56 for operating a yarn-cutting knife 58 after the formation of the yarn loops.
  • Each cycle of operations begins with a command to the tensioning roller drive control 36 to step the rollers 24 in order to draw the warp yarns forwards towards the needle bed and, after the advance of the yarns, the crochet stitch drive control 40 actuates the needle and guide motions to knock over the previously formed stitch and to form a further stitch in each warp stitch chain in known manner.
  • the weft yarn guide drive control units 46,50 are operated to draw the weft yarns along the hold-back bar 14 onto the warp yarns so that the weft yarns are inlaid into the stitches being formed and, if required, to adjust the relative positions of the different warp yarns in a direction towards and away from the trick plate 6.
  • the retainer hook drive control unit 52 is operated for each hook 18 in coordination with the movements of the weft guide tubes 10 to hold the weft yarns looped, after they have been laid to the required positions along the hold-back bar 14, until the loops have been secured fast by the completion of the stitch in each warp yarn.
  • the skirt yarns D are laid as groups of loops extending between and having their ends caught by the pair of elastic yarns A,B and the non-elastic yarn C respectively, so that the bends of the loops, in particular adjacent the elastic yarns A,B, project a short distance beyond the stitch chains.
  • the loop yarn E follows most of the path of the skirt yarns but in each group of skirt yarn loops it is formed into an elongate loop that is held by its ends in the pair of elastic warp yarns and that extends away from that pair of warp yarns in the opposite direction to the skirt yarn loops.
  • the continuous fabric strip formed by the inlaying of the weft yarns to the stitch chains follows a path past the knife, scissors or other cutting device 58 which is located between the hold-back bar and the tensioning rollers and which is operable to sever the tail ends of the looped weft yarns, namely that edge of the strip in which the non-elastic yarn C is situated.
  • the yarn c, and the looped over ends of the weft yarns, are then discarded, leaving the main lengths of the weft yarns as separate tufts, held by the elastic stitch chains A,B only.
  • the process is intended to produce a series of individual, separated tassels, and beyond the tensioning rollers 24, the groups of looped weft yarns are separated from each other by severing the elastic stitch chains in the spaces between the groups, at locations indicated by the arrows K in Fig. 3.
  • This may be done manually or by mechanical means (not shown), or the product may be supplied to the end user as a continuous length for the tassels to be separated when required.
  • the tension is removed from the elastic yarns, because of the twist given to the yarns in forming the stitches and because the stitches are formed non-symmetrically around the weft yarns, the crochet stitch chain of each tassel curls around on itself.
  • Fig. 3 illustrates in more detail one example of the sequence of operations. In particular, it shows the inlaying of the weft yarns D,E relative to the formation of the stitches of the crochet stitch chains.
  • a stitch chain C' of the non-elastic yarn C is produced simultaneously as a holding chain, spaced from the elastic yarn stitch chains A',B' by a distance slightly greater than the intended tassel tuft length.
  • Fig. 3 shows all the operative positions 18' of the retaining hooks 18 in relation to the yarn loops, but it will be understood that as soon as a weft yarn loop is securely locked into the stitch chains the associated retaining hook is retracted and the fabric is drawn further through the machine. It is also to be understood that at each location in Fig. 3 at which a loop yarn is shown crossing a stitch chain it is inlaid or woven into a stitch of that chain.
  • the skirt yarns E are laid in a series of uniform length groups of elongate yarn loops.
  • the pattern of the hanging loop yarn D indicated by the full line, follows the skirt yarns between the groups of loops and along the initial and final legs of each group of loops. Between those initial and final legs it follows a zig-zag pattern path, being drawn out beyond the skirt loops to form the hanging loop, to each side of which it is doubled through the elastic stitch chains A',B'. It will be seen that this results in each end of the hanging loop being inlaid or woven into three stitches of each elastic chain. It is possible to inlay the yarn ends into more than three stitches if a still stronger connection is required.
  • one or both of the hanging loop yarns and the tassel yarn is also given a motion out of the plane of the loops, ie. transverse to the loops and the warp stitch chains, so that their positions are transposed in that transverse direction during the formation of the hanging loop.
  • this is achieved by rotating one or both carrier rods 12, on which the guide tubes 10 of the weft yarns are mounted, by the rotary drive control unit.
  • the carrier rods 12 are pivoted to reverse the positions of the hanging loop and tassel loop yarns in the direction perpendicular to the plane of the figure. The positions are reversed again after the formation of the elongate hanging loop so that the yarns are returned to their original relative locations perpendicular to the plane of the figure when the final short loop D 2 is inlaid into the warp stitch chain.
  • Fig. 4 shows a diagram of another pattern of weft yarns in relation to a numbered sequence of successive warp chain stitches
  • the table of Fig. 4b sets out in relation to the sequence of warp chain stitches the displacements of the weft yarns forming the loops (x direction) and changing the relative positions of the yarns perpendicular to the plane of the diagram (z direction).
  • the displacements are shown in arbitrary units and indicate only the relative displacements in each direction.) In other examples there may be additional displacements in the z direction where the hanging loop ends are inlaid into the warp chain stitches.
  • the elastic stitches tend to give a strongly directional bias curling the bunched bends of the heads of the tassel tufts around on themselves to enhance the simulation of a tassel knob. If required, the threads of the free ends of the tufts can be untwisted, and the fibres separated, to complete the formation of the tassel tuft.
  • the hanging loop When the hanging loop is employed to attach the tassel in use, it is found that the multiple passes of the ends of the hanging loop yarn through the elastic chains, as well as influencing the bias at the heads of the tufts when the elastic stitch chains contract, provides the firm attachment needed to bear the expected loads on the tassel.
  • the form of the tassels depending upon the types of yarn used to form the skirt loops and hanging loops, for example, and the relative spacing of the loops in the elastic stitch chains. If the hanging loop yarn is very thick compared with any other weft yarn, it may be inlaid into separate stitches of the elastic stitch chain from those receiving the other weft yarn or yarns. Also, the final appearance of the hanging loop can be varied in dependence upon the locations at which the hanging loop yarn is laid into the elastic stitch chain or chains relative to the chain stitches and to the skirt loop yarn or yarns.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
EP97308440A 1997-10-23 1997-10-23 Verfahren und Vorrichtung zur Herstellung von Pompons Withdrawn EP0913512A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97308440A EP0913512A1 (de) 1997-10-23 1997-10-23 Verfahren und Vorrichtung zur Herstellung von Pompons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97308440A EP0913512A1 (de) 1997-10-23 1997-10-23 Verfahren und Vorrichtung zur Herstellung von Pompons

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EP0913512A1 true EP0913512A1 (de) 1999-05-06

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EP97308440A Withdrawn EP0913512A1 (de) 1997-10-23 1997-10-23 Verfahren und Vorrichtung zur Herstellung von Pompons

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106087240A (zh) * 2016-06-27 2016-11-09 无锡祥虹工贸有限责任公司 一种捻须机的控制系统
CN106120146A (zh) * 2016-06-27 2016-11-16 无锡祥虹工贸有限责任公司 一种捻须机的控制系统
CN113501380A (zh) * 2021-06-25 2021-10-15 邵瑞瑞 一种用于流苏穗子均匀铺设的机构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD134790A1 (de) * 1977-09-02 1979-03-21 Helmut Bartl Verfahren und vorrichtung zur herstellung von quastenfransen
GB2063772A (en) * 1979-11-07 1981-06-10 Nottingham Braid Co Ltd Production of tassels
FR2506349A1 (fr) * 1981-05-20 1982-11-26 Obererzgebirgische Posamenten Procede pour la realisation de glands a franges

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD134790A1 (de) * 1977-09-02 1979-03-21 Helmut Bartl Verfahren und vorrichtung zur herstellung von quastenfransen
GB2063772A (en) * 1979-11-07 1981-06-10 Nottingham Braid Co Ltd Production of tassels
FR2506349A1 (fr) * 1981-05-20 1982-11-26 Obererzgebirgische Posamenten Procede pour la realisation de glands a franges

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106087240A (zh) * 2016-06-27 2016-11-09 无锡祥虹工贸有限责任公司 一种捻须机的控制系统
CN106120146A (zh) * 2016-06-27 2016-11-16 无锡祥虹工贸有限责任公司 一种捻须机的控制系统
CN113501380A (zh) * 2021-06-25 2021-10-15 邵瑞瑞 一种用于流苏穗子均匀铺设的机构

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