US3344812A - Looms with stationary weft supply - Google Patents

Looms with stationary weft supply Download PDF

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Publication number
US3344812A
US3344812A US540544A US54054466A US3344812A US 3344812 A US3344812 A US 3344812A US 540544 A US540544 A US 540544A US 54054466 A US54054466 A US 54054466A US 3344812 A US3344812 A US 3344812A
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US
United States
Prior art keywords
rapier
head
slot
looms
slots
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
US540544A
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English (en)
Inventor
Duran Magin Desveus
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
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Publication of US3344812A publication Critical patent/US3344812A/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/277—Guide mechanisms
    • 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
    • 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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers

Definitions

  • a rapier loom weft insertion is carried out by a rapier, which is projected into the warp shed from one side to carry a loop or strand of weft into the shed.
  • the rapier has to be guided and for this purpose, it is known to provide a series of guides on the sley, each guide being formed with a horizontal slot or recess in which the rapier slides, the guides being relatively narrow and having rounded tops, to allow warp threads to pass down each side of the guides into the lowered shed position.
  • alternate guides are placed on opposite sides of the rapier path, the slots of all the guides on each side being aligned to provide an effective guide across, the width of the loom.
  • a guide element for the rapier of a rapier loom has an open-ended horizontal slot with converging sides.
  • the slot is V-shaped and it is also preferred to make the edges of the rapier head V-shaped, with the sides of the slot at a more acute angle to each other than those of the V-shaped edge of the rapier head.
  • the strap to which the head of the rapier is connected is narrower than the head so that it does not wear the edges of the slots in the guide members.
  • FIGURE 1 is a plan view of the head end of a rapier
  • FIGURE 2 is a cross-section through a rapier loom sley, with a rapier head in a projected position
  • FIGURE 3 is a detailed front view of a guide element
  • FIGURE 4 is a plan view of the parts shown in FIG- URE 2.
  • FIGURE 1 there is shown a rapier for a loom comprising a metal head 1 to which is attached a hook device (not shown) which carries the weft through the shed of the warp threads.
  • the hook is not described here, because it forms no part of the present invention, and there are various types of hooks which could be carried by the rapier.
  • a steel strap 2 is fixed at one end to the head 1, the other end being anchored on the rapier drive mechanism (not shown).
  • the strap 2 has to be long enough to allow the rapier head to carry the weft the required distance into the shed; but it will be noted that it is considerably narrower than the head 1, and it is also thinner.
  • edges 3 and 4 of the head are double bevelled to produce an edge portion of substantially V-shaped crosssection (see FIGURE 2).
  • the loom sley 3,344,812 Patented Oct. 3, 1967 15 carries a series of rapier guide elements 5, which are arranged across the full effective length of the sley, in abutting relationship (see FIGURE 4) the elements being secured to the sley by screws 11.
  • Each element 5 comprises a base portion 12, and an upstanding lug 13, the lugs being tapered *(see FIGURE 4) and rounded on top (see FIGURE 3) to allow warp threads to divide easily on each side of the lug.
  • An open ended slot 6 is formed in the upper part of each lug 13, and it will be noted that alternate elements 5 are set with their lugs on opposite sides. This arrangement enables all the slots 6 on each side of the sley to provide an effective guide for the edge of the rapier head.
  • Each element 5 is made in nylon or other hard wearing material.
  • the slots 6 are V-s'haped, with substantially horizontal top faces 7, curved upwardly at their inside ends, and flat downwardly and inwardly sloping bottom faces 8.
  • the faces of the slots 6 make more acute angles with each other than the bevelled edges 3 and 4 of the rapier, and the dimensions of the slots are such that the rapier head engages with the faces 7 and 8 but does not penetrate to the inner end 9 of each slot. This prevents the head wearing the slot deeper than it is originally formed and so reducing the width of material 10 in the lug 13 between the slot 6 and the opposite edge of the lug.
  • a rapier guide element for a rapier loom wherein at least one side of said rapier has a longitudinally extending bevelled side edge, said element having a hori zontally open slot having outwardly diverging upper and lower sides for slidably engaging said bevelled rapier edge.
  • rapier guide means comprising a series of guide elements arranged along the sides of the rapier path, each of said guide elements having a horizontally inwardly open slot with divergent sides for slidable engagement with said rapier, and in combination therewith a rapier of such cross section that its opposite side surfaces extend into said slots to slidably engage the slot sides without engaging the bottoms of said slots.
  • said slot sides each defining an acute angle
  • said opposite side surfaces of said rapier having bevelled contacting surfaces defining an acute angle larger than said slot side angle.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US540544A 1965-04-06 1966-04-06 Looms with stationary weft supply Expired - Lifetime US3344812A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES0311799A ES311799A1 (es) 1965-04-06 1965-04-06 Un perfeccionamiento en los dispositivos para tramas de los telares

Publications (1)

Publication Number Publication Date
US3344812A true US3344812A (en) 1967-10-03

Family

ID=8442638

Family Applications (1)

Application Number Title Priority Date Filing Date
US540544A Expired - Lifetime US3344812A (en) 1965-04-06 1966-04-06 Looms with stationary weft supply

Country Status (5)

Country Link
US (1) US3344812A (enExample)
BE (1) BE681542A (enExample)
CH (1) CH459914A (enExample)
ES (1) ES311799A1 (enExample)
GB (1) GB1142031A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120569A1 (de) * 1991-03-08 1992-09-10 Textilma Ag Greiferwebmaschine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1184559B (it) * 1985-06-04 1987-10-28 Vamatex Spa Mezzi per guidare le pinze porta-trama ed i nastri che le comandano all'interno del passo di telai di tessitura a pinze
US5176185A (en) * 1990-07-24 1993-01-05 Sulzer Brothers Limited Guide teeth for a rapier picking tape
IT1272408B (it) * 1993-05-05 1997-06-23 Vamatex Nuova Spa Nastro portapinza per telai di tessitura

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316703A (en) * 1940-03-21 1943-04-13 Sulzer Ag Loom for weaving
US3263707A (en) * 1964-03-09 1966-08-02 Elitex Zavody Textilniho Drive means for a loom element
US3299911A (en) * 1964-01-17 1967-01-24 Dewas Raymond Weaving machine with uninterrupted weft supply

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316703A (en) * 1940-03-21 1943-04-13 Sulzer Ag Loom for weaving
US3299911A (en) * 1964-01-17 1967-01-24 Dewas Raymond Weaving machine with uninterrupted weft supply
US3263707A (en) * 1964-03-09 1966-08-02 Elitex Zavody Textilniho Drive means for a loom element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120569A1 (de) * 1991-03-08 1992-09-10 Textilma Ag Greiferwebmaschine
DE4120569C2 (de) * 1991-03-08 2000-05-31 Textilma Ag Greiferwebmaschine

Also Published As

Publication number Publication date
GB1142031A (en) 1969-02-05
ES311799A1 (es) 1965-07-01
CH459914A (fr) 1968-07-15
BE681542A (enExample) 1966-10-31

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