US3411549A - Weft yarn tying device for needle looms - Google Patents

Weft yarn tying device for needle looms Download PDF

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Publication number
US3411549A
US3411549A US596018A US59601866A US3411549A US 3411549 A US3411549 A US 3411549A US 596018 A US596018 A US 596018A US 59601866 A US59601866 A US 59601866A US 3411549 A US3411549 A US 3411549A
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Prior art keywords
weft
yarn
needle
fabric
latch
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Expired - Lifetime
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US596018A
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English (en)
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Muller Jakob
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Individual
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Individual
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/40—Forming selvedges
    • D03D47/42—Forming selvedges by knitting or interlacing loops of weft
    • D03D47/44—Forming selvedges by knitting or interlacing loops of weft with additional selvedge thread
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D35/00—Smallware looms, i.e. looms for weaving ribbons or other narrow fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/38—Weft pattern mechanisms

Definitions

  • the present invention relates to an improvement of needle looms of the type in which a weft inserting member is mounted on one side of the loom and is first moved to the other side for inserting a weft yarn, and then returned to its initial position after the inserted weft yarn has been anchored in some manner on the other side of the fabric.
  • Needle looms of this type are particularly used for weaving comparatively narrow fabrics, such as ribbons.
  • Needle looms are known in which two weft inserting means insert different weft threads, and are alternately actuated to insert the two weft yarns alternately into the warp sheds.
  • Another needle loom is known in which several weft yarns are successively inserted by one weft inserting means, and are tied together on the other side of the fabric by a common tying yarn looped by a single loop forming needle.
  • the improvement of the invention comprises weft yarn guide means operable to supply at least first and second weft yarns in a selected sequence, preferably al ternately, to the weft inserting means of a needle loom; at least first and second loop forming means, preferably latch needles, respectively associated with the first and second weft yarns and being movable in the direction of the warps for forming loops'by which the first and second weft yarns are tied; and control means for operating the weft inserting means, the yarn guide means, and the first and second loop forming means.
  • the first and second loop forming means are independently operated in the same sequence in which the first and second weft yarns are supplied, and form first and second parallel rows of loops for anchoring the first and second weft yarns respectively near the edge of the fabric.
  • the first loop forming means is located at Patented Nov. 19, 1968 the edge of the fabric, and the second loop forming means is located inwardly of the edge and spaced a selected small distance from the first loop forming means.
  • the weft inserting means is a single weft inserting member preferably having a forked end portion for alternately receiving the two weft yarns from two alternately operated weft yarn guides.
  • the anchoring loops only of the respective weft yarns.
  • a tying yarn supplied by an auxiliary yarn guide to the inwardly located loop forming means so that the loops by which the respective weft yarn is tied, are formed of the tying yarn.
  • the yarn guide, and the control means by which the two loop forming means are reciprocate-d in warp direction, are preferably controlled by strings operated by a Jacquard machine of known construction.
  • one of the loop forming means is disposed at the edge of the fabric, one or more additional loop forming means may be arranged spaced different distances from the edge in the region of the fabric for anchoring different weft yarns.
  • the warps 1 of a fabric are operated in the usual manner to form warp sheds through which two weft yarns 3 and 4 are alternately inserted by a weft inserting member 5 having a forked end portion into which the weft yarn guides 6 and 7 alternately insert the respective weft yarns 3 and 4.
  • weighted weft yarn guides 6 and 7 are operated by stiff wire strings 14 and 15 which are raised and lowered by the Jacquard control device of the loom.
  • Weft inserting member 5 is reciprocated and performs an inserting stroke from one side of the loom and fabric, shown to be the left side in FIG. 1, to the other side of the fabric, and back.
  • the reciprocating motion of weft inserting member 5 is derived from a rotary cam having a helical cam track in which a cam follower mounted on weft inserting member 5 is guided.
  • latch needles 8 and 9 are provided which are, respectively, associated with weft yarns 3 and 4.
  • Latch needle 8 is located at the edge of fabric 2
  • latc h needle 9 is located inwardly of latch needle 8, spaced a predetermined distance from the same and from the edge of the fabric.
  • Latch needles 8 and 9 are reciprocated in the longitudinal warp direction of the fabric by a reciprocating drive member 19 and a pair of coupling levers 17 and 18 which respectively cooperate with butts 23 and 22, as shown in FIG. 2.
  • Coupling levers 17 and 18 are respectively connected with stiff wire strings 20 and 21 operated by the Jacquard pattern control device 100 of the loom in synchronism with the cam by which weft inserting member 5 is reciprocated.
  • a rotary cam having a helical track engaged by a cam follower on drive member 19 may be used.
  • Latch needles 8 and 9 are alternately advanced and retracted.
  • the Jacquard control mechanism operates string 20 to place coupling lever 17 in the position illustrated in FIG. 2, while string 21 is operated to place coupling lever 18 in the illustrated coupling position engaging butt 22 of latch needle 9. In this position, movement of drive member 19 toward the right as viewed in FIG. 2 causes advance of the respective latch needle.
  • latch needle 8 When latch needle 8 is to be advanced, string 21 is raised, coupling lever 18 separated from butt 22, while string 20 is not operated so that coupling lever 17 assumes the coupling position engaging butt 23 of latch needle 8.
  • spring 8a Springs, not shown urge coupling levers 1'7 and 18 to the coupling position, and the latch needles are biased by springs 8a and 9a to be retracted during the stroke of drive member 19 to the left.
  • the arrangement is such that latch needles 8 and 9 are alternately advanced and retracted by drive member 19.
  • Latch needle 9 which is located inwardly of the fabric edge, is disposed slightly above the woven fabric 2, while latch needle 8 is located at the edge of the fabric below the level of latch needle 9.
  • An auxiliary yarn guide 13 is provided for guiding a tying yarn 11 into the hook of latch needle 9.
  • Yarn guide 13 is weighted and controlled by a stiff wire string 16 of the Jacquard mechanism.
  • latch needle 9 is in the retracted end position in which a loop formed of tying yarn 11 is held by the hook of the latch needle 9 which is closed by latch 9'.
  • Weft inserting member 5 has started its movement into the open warp shed and inserts the double weft yarn 4 into the shed.
  • Auxiliary yarn guide 13 is still located on the right side of the fabric.
  • weft inserting member 5 has fully passed through the shed and placed the double weft yarn 4 in the same, crossing the advanced needle 9 which is located under weft inserting member 5 and above portion 4a of yarn 4.
  • loop 11a has slipped onto the stem of needle 9, opening latch 9'.
  • weft yarn 4 is already held by tying yarn 11, while weft inserting member 5 is withdrawn.
  • needle 9 is further retracted, the old loop 11a is cast off, and a new loop is formed of tying yarn 11 which anchors the bent portion of the double weft yarn 4, the new loop assuming the position shown for the old loo-p 11a in FIG. 3.
  • a row or chain of loops 1?. shown in FIG. 1 is formed in warp direction on the fabric for anchoring the double weft yarn.
  • the Weft yarn 3 is looped by latch needle 8 Without the use of a tying yarn.
  • weft inserting member 5 has been advanced into the warp shed, while latch needle 8 is still in the retracted position holding loop 3a of weft yarn 3.
  • weft inserting member has placed the weft yarn 3 completely in the warp shed, and needle 8 has advanced between the underside of weft inserting member 5 and weft yarn portion 317.
  • the old loop 3a has moved to the stern of needle 8 and opened latch 8.
  • a needle loom comprising a weft inserting means reciprocable across the warps of a fabric woven on said loom from one side to the other side of the loom and fabric, and back in the opposite direction
  • weft yarn guide means operable to supply at least first and second weft yarns in a selected sequence to said weft inserting means
  • at least first and second loop forming means respectively associated with said first and second weft yarns and disposed on said other side movable in the direction of said warps for forming loops by which said first and second yarns are tied on said other side of said fabric
  • control means operating in timed relation with said weft inserting means, for operating said yarn guide means, and said first and second loop forming means so that the latter are operated in the same sequence in which said first and second weft yarns are supplied, and form first and second parallel rows of loops for anchoring said first and second weft yarns, respectively, on said other side of said fabric.
  • weft inserting means is a single weft inserting member having an end portion for'receiving said weft yarns from said weft yarn guide means.
  • said Weft yarn guide means include first and second weft yarn guides for said first and second weft yarns, respectively, wherein said control means operate said first and second weft yarn guides to alternately supply said first and second weft yarns to said weft inserting means; and wherein said control means alternately operate said first and second loop forming means.
  • said first loop forming means is a first latch needle located at the edge of the fabric on said other side
  • said second loop forming means is a second latch needle located in the region of said fabric inward of said edge spaced a selected distance from the same, wherein said first and second latch needles are reciprocable in the longitudinal direction thereof in warp direction
  • said weft yarn guide means includes first and second weft yarn guides for said first and second weft yarns, respectively
  • said control means alternately operate said first and second latch needles and said first and second yarn guides, respectively.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
US596018A 1965-11-20 1966-11-21 Weft yarn tying device for needle looms Expired - Lifetime US3411549A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1593865A CH433141A (de) 1965-11-20 1965-11-20 Vorrichtung zum Weben von Bändern mit mindestens zwei verschiedenen Schussfäden

Publications (1)

Publication Number Publication Date
US3411549A true US3411549A (en) 1968-11-19

Family

ID=4413189

Family Applications (1)

Application Number Title Priority Date Filing Date
US596018A Expired - Lifetime US3411549A (en) 1965-11-20 1966-11-21 Weft yarn tying device for needle looms

Country Status (8)

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US (1) US3411549A (en))
AT (1) AT276265B (en))
CH (1) CH433141A (en))
DE (1) DE1535530B2 (en))
ES (1) ES333567A1 (en))
FR (1) FR1500744A (en))
GB (1) GB1131667A (en))
NL (1) NL6615805A (en))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674058A (en) * 1970-01-20 1972-07-04 John Sellers Loom and woven tape made therefrom
JPS50138176A (en)) * 1974-04-25 1975-11-04
US4007763A (en) * 1974-03-21 1977-02-15 Thomas French & Sons Limited Narrow fabrics
US20090145508A1 (en) * 2005-10-06 2009-06-11 Francisco Speich Method and Needle Webbing Loom in Order to Weave a Ribbon

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758614A (en) * 1952-03-07 1956-08-14 Tapes Inc Shuttleless loom
FR1302856A (fr) * 1961-10-09 1962-08-31 Kruse & Sohne K G Métier à ruban automatique
US3136343A (en) * 1962-04-12 1964-06-09 Firing Osborne Needle loom for y tapes
CH410810A (de) * 1963-06-27 1966-03-31 Mueller Jakob Schusseintragnadel, insbesondere für Bandwebstühle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758614A (en) * 1952-03-07 1956-08-14 Tapes Inc Shuttleless loom
FR1302856A (fr) * 1961-10-09 1962-08-31 Kruse & Sohne K G Métier à ruban automatique
US3136343A (en) * 1962-04-12 1964-06-09 Firing Osborne Needle loom for y tapes
CH410810A (de) * 1963-06-27 1966-03-31 Mueller Jakob Schusseintragnadel, insbesondere für Bandwebstühle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674058A (en) * 1970-01-20 1972-07-04 John Sellers Loom and woven tape made therefrom
US4007763A (en) * 1974-03-21 1977-02-15 Thomas French & Sons Limited Narrow fabrics
JPS50138176A (en)) * 1974-04-25 1975-11-04
US20090145508A1 (en) * 2005-10-06 2009-06-11 Francisco Speich Method and Needle Webbing Loom in Order to Weave a Ribbon
US7857012B2 (en) 2005-10-06 2010-12-28 Textilma Ag Method and needle webbing loom in order to weave a ribbon

Also Published As

Publication number Publication date
ES333567A1 (es) 1967-10-01
DE1535530B2 (de) 1976-08-19
NL6615805A (en)) 1967-05-22
GB1131667A (en) 1968-10-23
AT276265B (de) 1969-11-25
FR1500744A (fr) 1967-11-03
DE1535530A1 (de) 1970-07-30
CH433141A (de) 1967-03-31

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