US3630238A - Method and apparatus of making a selvage in a loom - Google Patents

Method and apparatus of making a selvage in a loom Download PDF

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Publication number
US3630238A
US3630238A US9739A US3630238DA US3630238A US 3630238 A US3630238 A US 3630238A US 9739 A US9739 A US 9739A US 3630238D A US3630238D A US 3630238DA US 3630238 A US3630238 A US 3630238A
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United States
Prior art keywords
shuttles
shuttle
thread
weft
sheds
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Expired - Lifetime
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US9739A
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English (en)
Inventor
Edgar H Strauss
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.)
Ruti Machinery Works Ltd
Maschinenfabrik Rueti AG
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Maschinenfabrik Rueti AG
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Publication date
Application filed by Maschinenfabrik Rueti AG filed Critical Maschinenfabrik Rueti AG
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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
    • D03D47/12—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
    • D03D47/26—Travelling-wave-shed looms

Definitions

  • This invention relates to the manufacture of a selvage on wave-type loom and more particularly to a method of making the selvage in which weft threads of predetermined length are passed successively, always in the same order, to weft-inserting elements or shuttles prior to their entry into each of the changing sheds formed on the wave-type loom and are withdrawn alternately from the rear and front of the shuttles during passage through the sheds and to an apparatus for carrying out this method.
  • this invention provides a method of forming a selvage, i.e., a conventional selvage of the type produced on a loom using bobbin-type shuttles, on one side of the fabric, i.e., on that side at which the weft thread insertion elements or shuttles enter each shed on the wave-type loom.
  • this invention contemplates a method for the manufacture of a selvage on a wave-type loom which is characterized in that when the shuttles successively enter the changing sheds, the weft threads to be inserted into the sheds are cut behind each second of the shuttles, that follow directly one after the other, and the threads are withdrawn alternately from the rear and front ends of the shuttles for the purpose of inserting each of the weft threads into a shed.
  • This invention is also directed to an apparatus for making a selvage on a wave-type loom by the above-described method.
  • This apparatus comprises, in combination with a wave-type loom, a plurality of shuttles which followdirectly one after the other for the purpose of successively inserting weft threads of a predetermined'length into each of the sheds formed during the weaving operation; said shuttles being provided with outlets for allowing the weft thread contained therein to exit alternately at the rear and front ends thereof and means outside of the sheds for cutting the thread exiting from the rear end of every second shuttle moving one after the other through the sheds.
  • This invention is also concerned with the shuttles used for making a selvage on a wave-type loom.
  • One embodiment of these shuttles is characterized in that it has at least one outlet point, opening or zone which is provided with thread-braking means through which the outgoing thread is guided, one outlet opening being located at the front end of the shuttle when the shuttle is in operation on the wave-type loom.
  • FIG. I is a schematic illustration of the point at which the insertion elements enter the sheds formed on a wave-type loom
  • FIG. 2 is a side view of a weft-thread insertion element or shuttle of this invention
  • FIG. 3 is a side view of the thread-brake arrangement provided inside the insertion element of the invention.
  • FIG. 4 is a section of the brake arrangement taken along line lVlV of FIG. 3.
  • FIG. 1 three shuttles 11a, 11b and '1lc for inserting the weft threads into the sheds formed during the weaving operation on a wave-type loom or multiphase weaving machine are shown.
  • the shuttles 11 are pushed into one of the sheds, they are moved to the left by bladelike reeds 12.
  • the reeds 12 located at the rear edge 13 of the shuttles 11 move upwards, the reeds as a whole executing an undulatory movement that progresses to the left.
  • the shuttles 11 cannot move upwards, since they are retained by the warp threads on both sides and at the top. The shuttles are therefore pushed to the left.
  • the fabric 14 extends upwards from the beatup point or fell 15.
  • the weft threads 16 are delivered from a supply bobbin (not shown) and are continuously wound on to a fixed blade or thread coil-forming member 17 to form thread coils 18.
  • One such coil 18 is passed to each shuttle 11. This takes place by the shuttles 11' being successively pushed downwards over the blade 17 at the point where the coil 18 is located on the blade.
  • the coils 18 remain in an orderly position in the interior of each shuttle 11. While the shuttles are passing through the sheds, the threads 16 are again successively withdrawn from the shuttles.
  • a device for cutting the weft threads 16 is schematically shown and designated by referencenumeral 19.
  • the insertion elements or shuttles 11 are shown in greater detail in FIG. 2.
  • the shuttle 11 illustrated has a body of conchoidal shape.
  • the body has two sidewalls which are interconnected along the closed edge portion or seam 40.
  • the sidewalls are separated from each other over the remaining open part of the periphery of the shuttle. The shuttle 11 can therefore be pushed downwards over the blade 17.
  • EAch insert includes one of the two plates 20 and 21, details of which are shown in FIGS. 3 and 4.
  • One plate 20 incorporates the resilient supporting arms 22 and 24, and the other plate 21 incorporates the resilient supporting arms 23 and 25.
  • Threadbrakes or thread-braking means 26, 27 and 28, 29 are carried by these supporting arms 22, 23 and 24, 25 respectively.
  • the plates 20 and 21 each carry a lining 30 and 31, respectively.
  • the lining is made of bristles, satinlike material, or the like resilient materials.
  • a retaining element 32 or 33, respectively, is secured on the outer sides of the plate 20 or 21.
  • These retaining elements 32 and 33 is such that they fit exactly into complementary orifices or slots 34 in the sidewalls of the shuttle 11, and in this position the elements lie against the slots 34 over the entire boundary thereof.
  • One of the slots 34 of the shuttle 11 is shown in FIG. 2.
  • the retaining elements32 and 33 are rivetted or otherwise secured to the plates 20 and 21.
  • the arms 22, 23 and 24, 25, respectively, are resilient and are biased towards each other. The arms therefore tend, on the one hand, to press the plates 20 and 21 away from each other and on the other to bias the end portions 26, 27 and 28, 29, respectively, towards each other. In this manner these end portions each form a threadbrake.
  • the retaining elements 32 and 33 are thus held in precisely determined positions in the slot 34 in the sidewalls of the shuttle.
  • the construction described readily enables the inserts arranged in the interior of the shuttle 11 to be inserted as required in the body of the shuttle and to be removed therefrom and thus replaced.
  • the thread coil provided of predetennined length which (as shown in the shuttle 11 in FIG. 2) takes on the form of a row of loops which are positioned between the linings 30 and 31, is constantly withdrawn again during the travel of the shuttle over the width of the loom.
  • the thread 16 is withdrawn either at a rear outlet point or opening via the thread-brake 26, 27 or at a forward outlet point or opening via the thread-brake 28, 29.
  • a thread guide means in the form of a notch 35 is provided at the front outlet opening in that wall of the shuttle positioned on the side where the thread emerges.
  • the weft thread 16 emerging at the rear end of the shuttle 11 is prevented from moving out of the thread-brake 26, 27 by a thickened portion 36 provided at the rear outlet opening.
  • the shuttle 11a When the loom is operating, the shuttle 11a is first introduced into a shed. The weft thread is cut at the front end 42 by means of the cutting device 19. During this phase of operation, the weft thread thus runs from the rear end of the shuttle 11a to the blade 17. Because of this thread being continuously woven into the fabric, weft thread is continuously withdrawn from the coil 18 stored in the shuttle 11a through the rear end of the shuttle. In the next working cycle of the loom, the shuttle 11b is pushed into the next shed formed as illustrated in FlG. 1.
  • the cut front end 42 of the weft thread taken over by the shuttle 11c passes for the most part into the interior of shuttle llc, as was the case with shuttle 11a.
  • a short thread portion at 42 projecting therefrom does not affect the weaving process.
  • the thread portion at 41, cut at the rear of shuttle 11b and hanging therefrom should not, however, extend beyond the rear end of this shuttle 1 lb.
  • cutting device or means 19 is mounted to be moved into the position shown in FIG. 1 in a programmed or controlled manner so that the weft thread exiting from each second shuttle, i.e. every other shuttle, can be cut. Also, appropriate mechanism is provided to effect the cutting action of this device.
  • the thread-brakes or thread-braking means including 23, 24 and 25, 26, shown in FIGS. 2 and 3, are distinguished by the simple manner in which they can be produced. They are very cheap to manufacture since they can each form a single unit with the elements 20, 21 and 22 to 25. it will be understood that each thread-braking means acts to brake or slow down withdrawal of the thread as it emerges from the interior of the shuttle.
  • a method of making a selvage in a wave-type loom wherein weft threads of predetermined length are passed, always in the same arrangement, to a plurality of shuttles prior to their successive entry into the sheds formed during the weaving operation and are withdrawn from the shuttles again during their passage through the sheds, which comprises cutting the weft threads behind each second shuttle of the shuttles which follow directly one after the other when the shuttles enter the sheds, and withdrawing the threads alternately from the rear and front ends of the shuttles for the purpose of inserting the weft threads into each of the sheds.
  • a shuttle arrangement for use in the formation of a selvage on a wave-type loom which comprises a plurality of shuttles each having a body definin a hollow interior; retainmg means posmoned within sai interiors for holding a predetermined length of weft thread within said shuttles, at least one outlet zone in each said shuttle for allowing the thread to exit from each shuttle as it moves through a shed, the outlet zones of said shuttles, which move during operation in immediate succession, being located alternately at the front end and at the rear end of each said successively moved shuttle.
  • each of said retaining means includes two inserts within the interior of each said shuttle, and the predetermined length of weft thread therein takes the form of a row of loops, which are held between the two inserts, whereby during weaving withdrawing of the weft thread from the front end of a shuttle can take place by starting to withdraw the weft thread from the front end of the row of loops and withdrawing of the weft thread from the rear end of the shuttles can take place by starting to withdraw the weft thread from the rear end of the row of loops.
  • an apparatus for forming a selvage on one side of the fabric produced in said loom which comprises a plurality of shuttles, adapted to have one follow directly after the other to insert a weft thread into each of the sheds formed during the weaving operation, each shuttle adapted to contain a predetermined length of weft thread therein and having at least one outlet for allowing the thread to exit therefrom during its travel through the shed, said shuttles being arranged to travel through the sheds so that the weft threads contained therein are withdrawn alternately from an outlet located at the rear and from an outletlocated at the front end of respective shuttles operating as sequential pairs of shuttles which follow directly one after the other during the weaving operation, means being provided for cutting the thread exiting from the outlet located at the rear of every second shuttle of each said pair when the shuttles successively enter the warp threads whereby a selvage is formed at the side of the warp threads entered by the shuttles.
  • each of said second shuttles has a guide means positioned adjacent its front end for fixing the position of the weft thread emerging from said front end.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
US9739A 1969-02-20 1970-02-09 Method and apparatus of making a selvage in a loom Expired - Lifetime US3630238A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH257369A CH495443A (de) 1969-02-20 1969-02-20 Verfahren zum Herstellen einer Gewebekante und der Durchführung des Verfahrens dienende Eintragsorgane

Publications (1)

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US3630238A true US3630238A (en) 1971-12-28

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ID=4236830

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US9739A Expired - Lifetime US3630238A (en) 1969-02-20 1970-02-09 Method and apparatus of making a selvage in a loom

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US (1) US3630238A (enrdf_load_stackoverflow)
BE (1) BE746199A (enrdf_load_stackoverflow)
CH (1) CH495443A (enrdf_load_stackoverflow)
CS (1) CS149680B2 (enrdf_load_stackoverflow)
FR (1) FR2032765A5 (enrdf_load_stackoverflow)
GB (1) GB1257602A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10550497B1 (en) * 2016-05-27 2020-02-04 Apple, Inc. Weaving equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2027806A (en) * 1930-08-16 1936-01-14 Collins & Aikman Corp Loom
US2925833A (en) * 1957-06-15 1960-02-23 Strake Lambertus Te Weft inserting nozzle for looms
US3195580A (en) * 1961-07-06 1965-07-20 Mach Tool Works Oerlikon Device for piling-up a weft-thread for looms
US3311136A (en) * 1962-11-23 1967-03-28 Rudolf H Rossman Shuttle for a loom

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2027806A (en) * 1930-08-16 1936-01-14 Collins & Aikman Corp Loom
US2925833A (en) * 1957-06-15 1960-02-23 Strake Lambertus Te Weft inserting nozzle for looms
US3195580A (en) * 1961-07-06 1965-07-20 Mach Tool Works Oerlikon Device for piling-up a weft-thread for looms
US3311136A (en) * 1962-11-23 1967-03-28 Rudolf H Rossman Shuttle for a loom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10550497B1 (en) * 2016-05-27 2020-02-04 Apple, Inc. Weaving equipment

Also Published As

Publication number Publication date
FR2032765A5 (enrdf_load_stackoverflow) 1970-11-27
GB1257602A (enrdf_load_stackoverflow) 1971-12-22
DE2007981B2 (de) 1976-02-12
DE2007981A1 (de) 1970-11-19
BE746199A (fr) 1970-07-31
CS149680B2 (en) 1973-07-25
CH495443A (de) 1970-08-31

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