US3736965A - Means for severing of weft yarn during weaving - Google Patents

Means for severing of weft yarn during weaving Download PDF

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Publication number
US3736965A
US3736965A US00144837A US3736965DA US3736965A US 3736965 A US3736965 A US 3736965A US 00144837 A US00144837 A US 00144837A US 3736965D A US3736965D A US 3736965DA US 3736965 A US3736965 A US 3736965A
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weft
disc
loom
plates
severing
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US00144837A
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S Yates
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Fothergill and Harvey Ltd
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Fothergill and Harvey Ltd
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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

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  • the object of the invention is an improved method for the severing of the weft threads of woven fabric during the weaving operation, and more particularly to fabrics constructed from easily abraded fibers such as glass or carbon, and further with particular reference to fabrics woven on a water-jet or similar high speed loom.
  • the method according to the invention comprises mounting a continuously rotating abrasive disc adjacent to the selvedge of a fabric being woven to abrade the weft yarn during beat up and means for controlling the yarn relatively to the disc.
  • FIG. 1 is a plan view of part of one side of a loom reed and sley with the severing disc for the weft in position;
  • FIG. 2 is a similar plan view of the opposite side of the loom.
  • FIG. 3 is a side elevation of the severing disc shown in FIG. 1 looking in the direction of the arrow A in FIG.
  • FIG. 4 is a side elevation of the severing disc shown in FIG. 2 looking in the direction of the arrow B in FIG. 2.
  • the method is carried out on a loom of normal construction with a slay carrying a reed and healds through which warp yarns 11 pass and which form the shed.
  • An abrasive disc 1 driven by an electric motor 2 is mounted on the loom frame in close proximity to the selvedge of the fabric 3 being woven, with the axis of the disc parallel to that of the weft 4.
  • the weft 4 may be propelled through the shed of a water-jet loom by a water jet 5 in which discrete quanta of water are used to propel the weft yarn; or the weft may be inserted by air jets or by other shuttle-less devices.
  • a pair of serrated weft guide plates 6 are mounted in the end of a reed 7.
  • the weft is inserted through the shed and clamped by a clamp 7 behind the jet orifice.
  • the weft 4 located in serrations 6 of the plates 6 passes over and is tensioned between the plates 6 and as the reed advances the weft between the plates is presented to the disc 1 and is severed.
  • a second abrasive disc 8 driven by a motor 9 is mounted on the opposite side of the loom frame in close proximity to the opposite side of the loom frame in close proximity to the opposite selvedge again with the axis of the disc parallel to that of the weft.
  • weft yarn 4 completes its traverse through the shed of the warp yarns l1 and reaches this side of the loom, it is caught between three threads warp yarns 12 which are continuously twisted together by a separate mechanism of known construction.
  • the weft before being twisted up with the warp yarns 12 passes over two fixed weft guide plates 13 on the loom frame between which the disc 8 rotates.
  • the warp yarns 12 retain the tension on the weft yarns 4 which after being caught up with the warp yarns are severed by the disc 8 and the severed ends are taken away with the warp yarns 12.
  • the weft yarn is held between the warp threads 1 1 and the selvedge is tensioned by the continued twisting of the aforementioned three catching warp yarns 12.
  • the weft yarn 4 is pulled firmly against the abrasive cutting disc 8 on the right hand side of the loom.
  • the two guide plates 13 prevent the weft yarn from moving tangentially with respect to the disc 8.
  • the abrasive wheels 1, 8 are required to run continuously during weaving operation at a high surface speed.
  • the foregoing parts are mounted as a standard loom frame (not shown).
  • Apparatus for severing weft yarn in a loom having a sley and a reed comprising a continuously rotating disc mounted at one side of the loom adjacent the fabric being woven, a pair of plates mounted on one end of the reed and over which the weft is adapted to extend, said disc being disposed to rotate between said plates and said plates having serrations to locate the yarn thereon, means for applying tension to the weft extending over the plates and means for bringing the weft after each pick into contact with the disc to sever the web.
  • Apparatus for severing weft yarn as in claim 1 comprising a second continuously rotating disc similarly mounted at the opposite side of the loom, a second pair of serrated plates mounted on the loom between which the second disc rotates, means for applying tension to the weft yarn extending over said plates and means for bringing a weft yarn at beat up into contact with the second disc to sever the yarn.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)

Abstract

An improved method and apparatus for severing weft yarns in a fabric woven from glass or carbon yarns on a loom in which the weft is inserted by a water jet an airjet or other shuttleless device in which the weft yarn is presented to a continuously rotating abrasive disc during beat up to sever the yarn.

Description

United States Patent Yates June 5, 1973 [54] MEANS FOR SEVERING OF WEFT References Cited YARN DURING WEAVING UNITED STATES PATENTS [75] Inventor: Sidney Yates, Todmorden, England 3,455,342 7/1969 Golobart ..139/302 1 Assigneei Fqtheljgill & Harvey Limited, 3,461,920 8/1969 Sakamoto ..l39/302 Klttleboroughi England 2,673,577 3 1954 Mills a l ..28/1 cs [22] Filed: May 19, 1971 2,271,600 2/1942 McRae et al. ..l39/303 [211 144837 Primary Examiner-l-lenry S. Jaudon Attorney-Norris & Bateman [30] Foreign Application Priority Data May 26, 1970 Great Britain ..25,14o 7o [57] ABSTRACT An improved method and apparatus for severing weft (gl 3693/93/23 yams in a fabric woven from glass or carbon yams on [58 Field of Search ..139/263, 264, 291 c, a the mated by a water Jet 139/302, 303; 66/145 B; 28/1 CS airjet or other shuttleless device in which the weft yarn is presented to a continuously rotating abrasive disc during beat up to sever the yarn.
3 Claims, 4 Drawing Figures Patented June 5, 1973 3,736,965
2 Sheets-Sheet 1 SIDNEY YATES NORRIS & BATEMAN Patented June 5, 1973 3,736,95
2 Shuts-Sheet 2 INVEA/TC) Q SIDNEY YATES BY 27ml. v @ZW NORRIS & BATEMAN MEANS FOR SEVERING OF WEFT YARN DURING WEAVING This invention relates to an improved method for the severing of weft yarns in a fabric woven from glass or carbon yarns.
The object of the invention is an improved method for the severing of the weft threads of woven fabric during the weaving operation, and more particularly to fabrics constructed from easily abraded fibers such as glass or carbon, and further with particular reference to fabrics woven on a water-jet or similar high speed loom.
The method according to the invention comprises mounting a continuously rotating abrasive disc adjacent to the selvedge of a fabric being woven to abrade the weft yarn during beat up and means for controlling the yarn relatively to the disc.
The invention will be described with reference to the accompanying drawings:
FIG. 1 is a plan view of part of one side of a loom reed and sley with the severing disc for the weft in position;
FIG. 2 is a similar plan view of the opposite side of the loom.
FIG. 3 is a side elevation of the severing disc shown in FIG. 1 looking in the direction of the arrow A in FIG.
FIG. 4 is a side elevation of the severing disc shown in FIG. 2 looking in the direction of the arrow B in FIG. 2.
The method is carried out on a loom of normal construction with a slay carrying a reed and healds through which warp yarns 11 pass and which form the shed.
An abrasive disc 1 driven by an electric motor 2 is mounted on the loom frame in close proximity to the selvedge of the fabric 3 being woven, with the axis of the disc parallel to that of the weft 4.
The weft 4 may be propelled through the shed of a water-jet loom by a water jet 5 in which discrete quanta of water are used to propel the weft yarn; or the weft may be inserted by air jets or by other shuttle-less devices.
A pair of serrated weft guide plates 6 are mounted in the end of a reed 7. In operation the weft is inserted through the shed and clamped by a clamp 7 behind the jet orifice. As the reed begins to beat up, the weft 4 located in serrations 6 of the plates 6 passes over and is tensioned between the plates 6 and as the reed advances the weft between the plates is presented to the disc 1 and is severed.
A second abrasive disc 8 driven by a motor 9 is mounted on the opposite side of the loom frame in close proximity to the opposite side of the loom frame in close proximity to the opposite selvedge again with the axis of the disc parallel to that of the weft.
As the weft yarn 4 completes its traverse through the shed of the warp yarns l1 and reaches this side of the loom, it is caught between three threads warp yarns 12 which are continuously twisted together by a separate mechanism of known construction. The weft before being twisted up with the warp yarns 12 passes over two fixed weft guide plates 13 on the loom frame between which the disc 8 rotates.
The warp yarns 12 retain the tension on the weft yarns 4 which after being caught up with the warp yarns are severed by the disc 8 and the severed ends are taken away with the warp yarns 12.
As the position of the healds changes at the end of the sequence of operations in which the weft yarn 4 is inserted, the weft yarn is held between the warp threads 1 1 and the selvedge is tensioned by the continued twisting of the aforementioned three catching warp yarns 12.
By this means, the weft yarn 4 is pulled firmly against the abrasive cutting disc 8 on the right hand side of the loom. The two guide plates 13 prevent the weft yarn from moving tangentially with respect to the disc 8.
The abrasive wheels 1, 8 are required to run continuously during weaving operation at a high surface speed.
The foregoing parts are mounted as a standard loom frame (not shown).
What I claim is:
1. Apparatus for severing weft yarn in a loom having a sley and a reed comprising a continuously rotating disc mounted at one side of the loom adjacent the fabric being woven, a pair of plates mounted on one end of the reed and over which the weft is adapted to extend, said disc being disposed to rotate between said plates and said plates having serrations to locate the yarn thereon, means for applying tension to the weft extending over the plates and means for bringing the weft after each pick into contact with the disc to sever the web.
2. Apparatus for severing weft yarn as in claim 1 comprising a second continuously rotating disc similarly mounted at the opposite side of the loom, a second pair of serrated plates mounted on the loom between which the second disc rotates, means for applying tension to the weft yarn extending over said plates and means for bringing a weft yarn at beat up into contact with the second disc to sever the yarn.
3. Apparatus as in claim 1 and an electric motor for continuously driving the rotating disc.

Claims (3)

1. Apparatus for severing weft yarn in a loom having a sley and a reed comprising a continuously rotating disc mounted at one side of the loom adjacent the fabric being woven, a pair of plates mounted on one end of the reed and over which the weft is adapted to extend, said disc being disposed to rotate between said plates and said plates having serrations to locate the yarn thereon, means for applying tension to the weft extending over the plates and means for bringing the weft after each pick into contact with the disc to sever the web.
2. Apparatus for severing weft yarn as in claim 1 comprising a second continuously rotating disc similarly mounted at the opposite side of the loom, a second pair of serrated plates mounted on the loom between which the second disc rotates, means for applying tension to the weft yarn extending over said plates and means for bringing a weft yarn at beat up into contact with the second disc to sever the yarn.
3. Apparatus as in claim 1 and an electric motor for continuously driving the rotating disc.
US00144837A 1970-05-26 1971-05-19 Means for severing of weft yarn during weaving Expired - Lifetime US3736965A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6058980A (en) * 1997-08-04 2000-05-09 Gividi-Italia S.P.A. Method for cutting a selvedge of a weft insertion side of a rapier loom

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH638250A5 (en) * 1979-07-10 1983-09-15 Rueti Te Strake Bv Jet weaving machine.
EP0113942B2 (en) * 1983-01-17 1991-01-23 Toray Industries, Inc. Yarn cutter for shuttleless loom
EP0767262A1 (en) * 1995-10-06 1997-04-09 Sulzer Rüti Ag Device for cutting weft yarns and loom with such device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2271600A (en) * 1941-09-04 1942-02-03 George H Mcrae Filling cutter
US2673577A (en) * 1953-01-12 1954-03-30 Bates Mfg Co Method and apparatus for forming apertured fabric
US3455342A (en) * 1966-08-26 1969-07-15 Ramon Balaguer Golobart Selvage trimming and waste removal means
US3461920A (en) * 1966-08-29 1969-08-19 Toemon Sakamoto Apparatus for cutting weft yarn ends under tension on a shuttleless loom

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2271600A (en) * 1941-09-04 1942-02-03 George H Mcrae Filling cutter
US2673577A (en) * 1953-01-12 1954-03-30 Bates Mfg Co Method and apparatus for forming apertured fabric
US3455342A (en) * 1966-08-26 1969-07-15 Ramon Balaguer Golobart Selvage trimming and waste removal means
US3461920A (en) * 1966-08-29 1969-08-19 Toemon Sakamoto Apparatus for cutting weft yarn ends under tension on a shuttleless loom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6058980A (en) * 1997-08-04 2000-05-09 Gividi-Italia S.P.A. Method for cutting a selvedge of a weft insertion side of a rapier loom

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CA938531A (en) 1973-12-18
CH520802A (en) 1972-03-31
GB1344833A (en) 1974-01-23

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