US3241576A - Weft guide means for shuttleless looms - Google Patents

Weft guide means for shuttleless looms Download PDF

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Publication number
US3241576A
US3241576A US221918D US22191862D US3241576A US 3241576 A US3241576 A US 3241576A US 221918 D US221918 D US 221918D US 22191862 D US22191862 D US 22191862D US 3241576 A US3241576 A US 3241576A
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United States
Prior art keywords
weft
weft thread
shed
reed
hook
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Expired - Lifetime
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US221918D
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English (en)
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Dewas Raymond
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Individual
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Individual
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Publication of US3241576A publication Critical patent/US3241576A/en
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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

Definitions

  • the invention relates to the insertion of different wefts in looms provided with large supply bobbins mounted on the loom frame and from which a continuous weft is fed from outside the shed.
  • the loom is fitted with a pirnless weft-inserter of the type in which the selected weft thread supplied from the bobbin must be positioned to extend from the fell of the cloth to which it is still attached, rearwardly along the plane of the warp so that it can be caught by the weft-inserter as it enters the shed.
  • a positioning hook is rigidly fixed to the lay and, owing to the backward movement of the said lay, catches the selected thread between the point at which the weft-inserter is about to come into contact with the weft thread and the point at which the single presenting lever contacts the thread, and in spite of the backward movement of the lay, the weft thread is compelled to continue to pass between the reed and the weft-inserter.
  • the present invention consists in the combination with the plurality of selecting members and the single lever for the presentation of the selected weft thread, of a hook which is mounted on the front face of the guard (end rod) of the reed or in immediate proximity to the said guard, the said hook having a downwardly directed point.
  • the selected weft thread moves into position to be caught by the hook of its own accord as a result of the upward movement of the presenting lever and the forward movement of the weft-inserter as it enters the shed.
  • the angle formed by the weft thread at its point of contact with the hook is distinctly more open than the angle formed in the prior art arrangement, which results in a reduction of strain on the thread which is conveyed at high speed by the weft-inserter.
  • the adjustment of the position of the hook is extremely simple since it is limited to an adjustment for height whereas in the known arrangement of the prior art, it is necessary to carry out an adjustment in three dimensions.
  • FIGURE 1 is a front elevational view of the weft guide means of the present invention and related parts of the loom at the moment when the inserting member is about to enter the shed.
  • FIGURE 2 is a top view corresponding to FIG. 1.
  • FIGURE 3 is a side view corresponding to FIG. 1.
  • FIGURE 4 is similar to FIG. 1 but shows the device at the moment when the inserting member has entered the shed and when the weft thread conveyed by this inserting member comes into contact with the reed guard.
  • FIGURE 5 is a top view corresponding to FIG. 4.
  • FIGURE 6 is a side view corresponding to FIG. 4.
  • FIGURE 7 is similar to FIG. 1 but shows the device at the moment when the inserting member is located inside the shed and when the weft thread has entered the locating hook.
  • FIGURE 8 is a top view corresponding to FIG. 7.
  • FIGURE 9 is a side view corresponding to FIG. 7.
  • FIGURE 10 shows the locating hook in a front view on an enlarged scale.
  • FIGURE 11 is a section along the line XI-XI of FIG. 10.
  • the reference 1 designates the lay and 2 designates the reed; the reference 3 designates the wrap threads, 4 is the reference given to the fell of the cloth and 5 refers to the fabric.
  • the references 6, 7, 8, 9 designates selectors which can be provided in any number desired.
  • An eyelet hole 10 provided in each of said selectors, allows the weft thread 11, 12, 13 or 14 to be conducted through the respective selectors.
  • Each weft thread is fed from a bobbin (not illustrated) and is connected to the selvedge of the fabric 5.
  • the refer ence 15 designates the lever which presents the selected weft thread 11 to the conducting needle 16 which enters the shed. Needle 16 is adapted to subsequently convey the weft thread towards the center of the warp and thereat transfer the said weft thread to a drawing needle (which has not been illustrated) which completes the insertion of the weft.
  • the reference 17 designates the guard (or end rod) of the reed, on the front face of which is stationarily mounted the positioning hook 18 which terminates in a short downwardly directed point.
  • the hook 18 is mounted in a position which can be adjusted for height inside an elongated slot 19 formed in the guard 17 by means of a bolt 20 which passes through the round head 18a of the hook and which is secured by means of a nut 21 (as shown in FIGS. 10 and 11).
  • the hook-can also be placed inside the selvedge in front of the space which separates two prongs between which warp threads are not engaged.
  • the said hook can be so adjusted as to be located in proximity to the plane of the fabric 5 when the reed 2 beats the weft up against the fabric.
  • the weft thread 11 which has been selected by the selector 6 is brought by the fork-shaped presenting lever 15 into the path of the needle 16 which is about to pass into the shed (as shown in FIGS. 1, 2 and 3).
  • the presenting lever 15 begins to move upwards while continuing to occupy a position which is set back with re: spect to the reed 2. Consequently, the weft thread 11 which is conducted by the needle 16 comes into contact with the guard 17 of the said reed 2.
  • the presenting lever 15 is immobilized in the top position and is no longer in contact with the weft thread 11 which the said lever has presented to the needle 16 and the selector 6 continues its return movement towards the front of the loom, the said movement having already been initiated in the position of FIG. 6.
  • the lay then continues its rearward movement well beyond the position shown in FIGS. 7, 8 and 9, but the hook 18 makes it necessary for the weft thread 11 to continue to pass between the reed 2 and the needle 16.
  • a separate weft thread selecting member for each weft thread, a single weft thread presenting member, an inserting member for the insertion of a selected weft thread into a shed formed by the shed forming means, a lay, a reed carried by said lay for beating-up the weft thread inserted into the shed, and a guard upon the reed; a weft guide consisting of a downwardly directed hook located on the front side of the reed adjacent to the guard thereof.
  • a separate weft thread selecting member for each weft thread, a single weft thread presenting member, an inserting member for the insertion of a selected weft thread into a shed formed by the shed forming means, a lay, a reed carried by said lay for beating-up weft the thread inserted into the shed, said reed having a front side, and a guard carried by the reed; a weft guide consisting of a downwardly directed hook carried by said guard.
  • reed carried by said lay for beating-up the weft threadinserted into the shed, said reed having a front side, and a guard carried by the front side of said reed; a weft guide consisting of a downwardly directed hook and means adjustably connecting said hook with said guard.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US221918D 1961-09-07 1962-09-06 Weft guide means for shuttleless looms Expired - Lifetime US3241576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR872550A FR1328921A (fr) 1961-09-07 1961-09-07 Dispositif pour l'insertion de trames différentes dans les machines à tisser à alimentation continue

Publications (1)

Publication Number Publication Date
US3241576A true US3241576A (en) 1966-03-22

Family

ID=8762403

Family Applications (1)

Application Number Title Priority Date Filing Date
US221918D Expired - Lifetime US3241576A (en) 1961-09-07 1962-09-06 Weft guide means for shuttleless looms

Country Status (8)

Country Link
US (1) US3241576A (da)
CH (1) CH388212A (da)
DE (1) DE1535346B1 (da)
DK (1) DK123988B (da)
ES (1) ES280414A1 (da)
FR (1) FR1328921A (da)
GB (1) GB971926A (da)
LU (1) LU42305A1 (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911967A (en) * 1974-06-11 1975-10-14 Rockwell International Corp Loom weft positioner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002591A1 (en) * 1980-03-05 1981-09-17 Bonas Machine Co Weft projection means

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE541343A (da) *
US1009472A (en) * 1907-08-14 1911-11-21 Clark Mechanical Co Needle-loom.
US2609842A (en) * 1949-09-08 1952-09-09 Dewas Raymond Device for the insertion of different wefts in weft feeder looms without pirn
FR1262106A (fr) * 1960-05-30 1961-05-26 August Engels G M B H Procédé de tissage et métier à tisser
US3092150A (en) * 1959-06-02 1963-06-04 Dewas Raymond Weaving method and loom

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE826578C (de) * 1949-09-08 1952-01-24 Raymond Dewas Vorrichtung zur Eintragung von verschiedenen Schussfaeden fuer Webstuehle mit spulenloser Schusseintragvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE541343A (da) *
US1009472A (en) * 1907-08-14 1911-11-21 Clark Mechanical Co Needle-loom.
US2609842A (en) * 1949-09-08 1952-09-09 Dewas Raymond Device for the insertion of different wefts in weft feeder looms without pirn
US3092150A (en) * 1959-06-02 1963-06-04 Dewas Raymond Weaving method and loom
FR1262106A (fr) * 1960-05-30 1961-05-26 August Engels G M B H Procédé de tissage et métier à tisser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911967A (en) * 1974-06-11 1975-10-14 Rockwell International Corp Loom weft positioner

Also Published As

Publication number Publication date
ES280414A1 (es) 1962-11-01
CH388212A (fr) 1965-02-15
DK123988B (da) 1972-08-28
DE1535346B1 (de) 1971-04-15
LU42305A1 (da) 1964-03-04
FR1328921A (fr) 1963-06-07
GB971926A (en) 1964-10-07

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