US3916935A - Apparatus for the storage of weft threads - Google Patents

Apparatus for the storage of weft threads Download PDF

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Publication number
US3916935A
US3916935A US476104A US47610474A US3916935A US 3916935 A US3916935 A US 3916935A US 476104 A US476104 A US 476104A US 47610474 A US47610474 A US 47610474A US 3916935 A US3916935 A US 3916935A
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United States
Prior art keywords
wall
thread
shell wall
shell
nozzle
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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
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US476104A
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English (en)
Inventor
Rachid Keldany
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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Publication of US3916935A publication Critical patent/US3916935A/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

  • ABSTRACT The present invention relates to an apparatus for the [30] Forelgn Apphc atl0n Pmmty Data storage of a weft thread of specific length in a weaving June 8, 1973 Switzerland 8325/73 machine which comprises a rotatable Shell wall formed as the generated surface of a truncated cone, [52] US. Cl; 139/122 R and a nozzle for conveying a thread which i to be [51] Int. Cl. D03D 47/36 Stored during/the weaving process. [58] Field of Search 139/122 R, 122 H, 127 P;
  • the present invention is intended to obviate the aforesaid disadvantages.
  • the invention is characterized in that a nozzle is directed towards the inside of a shell wall, and at the place where the base of the truncated cone is situated, there is arranged an end wall which is fixed to the shell wall and comprises in the center an aperture for the exit of the stored thread.
  • the present invention has the advantages that the stored thread does not undergo any additional twisting. It is also situated in a closed chamber, in which it is protected. Also, the apparatus takes up very little space.
  • a rotating cylinder is used for feeding or dimensioning the quantity of thread to be stored. According to the present invention, this cylinder can be combined with the storage apparatus, which again contributes to the compactness of the apparatus.
  • FIG. 1 shows a cylindrical arrangement 11 for feeding weft thread and for measuring-off thread sections of predetermined length.
  • the thread 12 is drawn off a supply bobbin 13 and thread sections of measured length are stored in storage apparatus 15. From the latter, they pass through a controllable thread brake 16 to 2 a nozzle 17 by means of which they are introduced into shed 19 through a jet of fluid which is introduced through tube 18.
  • the numeral 20 designates heddles of weaving shafts and 21 is the woven material being produced.
  • the cylindrical arrangement 11 comprises a cylinder 22 about which the thread 12 is conducted in several turns, being drawn off supply bobbin 13. Each turn is situated also in a groove of element 23. In this way, each turn is clearly separated from the other turns.
  • the cylinder 22 is connected securely to driving surface 24.
  • An arrow 25 indicates the direction in which the cylinder 22 and driving surface 24 rotate.
  • the storage apparatus 15 comprises a shell wall 30 which is in the form of the generated surface of a truncated cone. Situated at the base of the truncated cone is an end wall 31 which is connected securely to the shell wall 30. The end wall 31 forms a driving surface which abuts on the driving surface 24. Situated at the center of the end wall 31 is an aperture 32 through which the thread 12 can issue. The shell wall 30 and the end wall 31 can be given a rotary movement by a driving means not shown in the drawing. Also provided is an injector nozzle 33. This comprises a duct 34 through which the thread 12 is guided. As indicated by arrow 36, air can be blown into a tube 35 which extends about the duct 34.
  • the duct 34 comprises a rearwardly directed extension 37 into which the thread 12 enters, being conveyed by rotation of the cylinder 22.
  • the shell wall 30 is preferably provided with air escape apertures 38 through which the air delivered by the nozzle 33 can escape.
  • the apertures 38 can be round or slot-shaped or of any desired shape.
  • the shell wall 30 can be made, for example, of perforated sheet metal.
  • a cover wall 39 is situated at the top end of the truncated cone defined by the shell wall 30. This cover wall is stationary and is not connected to the shell wall 30, and the nozzle 33 extends through the cover wall 39 and is secured thereto. 1
  • the end wall 31 and the shell wall 30 are rotated continuously by the aforesaid driving means which is not shown. At the same time air is blown into the tube 35. Since the driving surface 24 and the end wall 31 abut on one another, the cylinder 22 is also rotated. In this operation, thread is continuously drawn from the supply bobbin 13, since the turns lying on the cylinder 22 are carried along by the cylinder 22. The thread 12 released from the cylinder 22 is drawn by. the injector nozzle 33 into the tube extension 37 and blown from the nozzle 33 towards the internal side of the shell wall 30. The nozzle 33 is preferably so directed that the thread 12 is directed towards a region of small diameter of the internal side of the shell wall 30.
  • the thread 12 lies against the internal side of the said wall and, as a result, forms weft thread turns lying against thesaid internal side.
  • the thread 12 slides towards the end wall 31 so that the individual turns of the thread 12 do not tangle with one another. It is advantageous to make the internalside of the shell wall relatively smooth and therefore capable of easy sliding, and to give the wall 30 a conical shape to a suitable extent.
  • the weft insertion nozzle 17 is operated and the thread brake 16 opens.
  • the thread stored within the storage apparatus is drawn from the said apparatus and introduced into the shed 19.
  • the thread brake 16 again closes.
  • another cycle of storage of weft threads in the storage apparatus 15 begins.
  • the weft thread newly stored in the storage apparatus 15 is again drawn out through the nozzle 17.
  • FIG. 2 shows a further embodiment of the invention.
  • a thread 12 supplied from a supply bobbin, a cylinder arrangement 11 for determining the length of thread sections, a storage apparatus 15, a thread brake .16 and a nozzle for introducing the weft thread sections into a shed, this nozzle being designated as 17.
  • the cylinder arrangement 11 again comprises a cylinder 22 which is surrounded by several thread turns, and also a driving surface 24.
  • the notched element and the supply bobbin are not shown in FIG. 2.
  • the storage apparatus 15 again comprises a shell wall 30 provided with air escape apertures 38 and an end wall 31. Also provided is an injector nozzle 33 which has a duct 34 with an extension 37 for guiding the thread 12.
  • a drive is shown by way of example. This can use a toothed wheel 48 which is fixed to the end wall 31 and is driven by a toothed belt 49.
  • the constructional example in FIG. 2 differs from the example shown in FIG. 1 in that the stationary member 42 is provided instead of the cover wall 39.
  • the nozzle 33 is built into this stationary member.
  • the member 42 defines with the shell wall 30 and the end wall 31 and intermediate space 43 which is approximately of the same width overall. More particularly, the wall portion 44 of the member 42 forms with the shell wall 30 an intermediate space of limited width.
  • an approximately uniform positive pressure is produced over the entire interior 43, so that the thread turns are applied uniformly against the wall 30 over the entire internal side of the said wall.
  • the member 42 serves to guide the thread 12. In this way the thread 12 is drawn away in an orderly fashion, obviating whipping movements of the thread.
  • the boundary wall 45 of the member 42 which is adjacent the end wall 31 is advantageously conical in shape.
  • the apex 46 of the cone 45 coincides with the axis of rotation 41 and is situated at a spacing from the aperture 32 of the end wall 31.
  • 4 member 42 is made of light metal. In this case it is easy to machine, non-rusting and can be provided with a fine and resistant surface.
  • a driving wheel 50 is used to rotate the driving surface of end wall 31.
  • the driving wheel 50 of this kind it is possible by means of the driving wheel 50 of this kind to provide a plurality of storage apparatus distributed over the periphery of the said wheel, providing the possibility of the selective introduction of different kinds and types of weft thread, for example, different colors.
  • An apparatus of this kind is illustrated in FIG. 3.
  • the driving wheel 50 is mounted to be rotatable in the bearing 51. It has a conical surface or means 52 over which a plurality of storage apparatus 15 are arranged.
  • FIG. 3 shows two such apparatus 15. But there may be more, for example four or six.
  • Each storage apparatus 15 is associated with a cylindrical arrangement 11 and a thread supply 13.
  • the cylinders 22, storage apparatus 15, and thread supplies 13 are arranged in a similar manner to the constructional examples shown in FIG. land FIG. 2.
  • a weft thread 12 runs-from each storage apparatus 15 through a controllable thread brake 16 to a weft thread introduction nozzle (not shown).
  • Each of the storage apparatus 15 is in continual contact with the driving wheel 50 and therefore in continuous rotational movement.
  • the driving surfaces 24, however, can be selectively brought into contact with and removed from contact with the running surface 40 of the storage apparatus 15 associated with themin accordance with a programme. When they .are not in contact, they lie against a brake 54 as is shown in the upper storage apparatus in FIG. 3.
  • a control arrangement must ensure that the insertion nozzle, whose thread is conveyed, is in the prescribed position relatively to the shed for introduction of weft threads, or is moved into such a position. It is also possible to keep the cylinder arrangements 11 permanently in contact with the storage apparatus 15 and to couple the said apparatus selectively to the driving wheel 50 and uncouple them therefrom and brake them.
  • Each of the apparatus 11, 15 can be built on a support and can be displaced in the direction of the axes of rotation of the apparatus 11, 15, as is shown in the case of the lower apparatus by the arrow 55.
  • the speed of rotation of the apparatus 11, 15 relatively to the speed of the driving wheel 50 can be modified. In this way the length of the individual weft threads which come to be introduced into the shed can be varied.
  • Apparatus for the storage of weft thread of variablelength before insertion into a shed of a loom comprising a shell wall formed as the generated surface of a truncated cone, there being arranged at the place where the base cross-section of the truncated cone is situated an end wall which is fixed to the shell wall and which defines centrally an aperture for the exit of the stored thread, a thread feeding nozzle producing an air stream for feeding the thread to be stored, said shell wall being rotatable and provided with a plurality of apertures, said nozzle being directed toward the inner side of the shell wall to convey the weft thread toward the inner side of said shell wall to cause it to rest thereon.
  • Apparatus according to claim 5 in which the plurality of apertures is provided by a shell wall formed from a perforated plate.
  • the stationary member comprises at its side directed towards the end wall a conical boundary surface, the apex of which is situated on the axis of rotation of the said rotating shell wall and at a distance from the aperture provided in the center of the end wall.
  • Apparatus according to claim 1 in which along one of the external circular boundaries of the shell wall there is provided a circular driving surface which abuts against a further circular driving surface connected rigidly to a cylinder about which the weft thread is guided in several turns, the weft thread being entrained by the cylinder when the latter rotates.
  • a driving wheel is provided with a driving surface which is rotatable about an axis and over the periphery of which there are provided a plurality of rotatable shell walls formed as the generated surface of a truncated cone, each wall with a nozzle directed towards a region of small diameter of the internal side of each shell wall, said shell walls being adapted to be driven by the driving surface, and that a rotatable cylinder for entraining and feeding one weft thread in each case can be corotated with each shell wall.
  • each cylinder can be coupled selectively each with one of the shell walls for rotation therewith.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US476104A 1973-06-08 1974-06-03 Apparatus for the storage of weft threads Expired - Lifetime US3916935A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH832573A CH558847A (de) 1973-06-08 1973-06-08 Einrichtung zum speichern von schussfaeden.

Publications (1)

Publication Number Publication Date
US3916935A true US3916935A (en) 1975-11-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
US476104A Expired - Lifetime US3916935A (en) 1973-06-08 1974-06-03 Apparatus for the storage of weft threads

Country Status (7)

Country Link
US (1) US3916935A (de)
JP (1) JPS5245825B2 (de)
BE (1) BE813539A (de)
CH (1) CH558847A (de)
DE (1) DE2427400C3 (de)
FR (1) FR2232630B1 (de)
GB (1) GB1414451A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002190A (en) * 1974-11-15 1977-01-11 Vyzkumny A Vyvojovy Ustav Device for depositing weft thread supplies in jet looms
US4033384A (en) * 1974-08-26 1977-07-05 Crompton & Knowles Corporation Means for and method of supplying weft yarn to an outside filling supply loom
US4753274A (en) * 1984-08-23 1988-06-28 Elitex Koncern Textilniho Strojirenstvi Method of and apparatus for inserting weft threads
US4821781A (en) * 1986-10-31 1989-04-18 Picanol N.V. Weft accumulating method and assembly for weaving machines
US4947898A (en) * 1987-11-05 1990-08-14 Picanol N.V. Weft thread supply via two accumulators

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1126633B (it) * 1979-01-04 1986-05-21 Scheffel Walter Dispositivo per preparare il filo di trama su una macchina di tessitura con inserimento della trama senza navetta
DE2903959C2 (de) * 1979-02-02 1983-01-05 Walter 8832 Weissenburg Scheffel Schußfadenzuführungsvorrichtung einer Webmaschine mit schützenloser Schußeintragung und Abzug von ortsfesten Vorratsspulen mittels einer sich drehenden Zugwalze
FR2478144A1 (fr) * 1979-08-06 1981-09-18 Leesona Corp Systeme d'alimentation et d'insertion d'un fil de trame dans un metier a tisser
BE885714A (nl) * 1980-10-15 1981-04-15 Picanol Nv Inslaginbrenginrichting voor luchtweefgetouwen
GB2136461A (en) * 1983-03-04 1984-09-19 Hollingsworth Yarn-handling process and apparatus
RU2268772C1 (ru) 2004-12-21 2006-01-27 Закрытое Акционерное Общество "Вектор" Способ тепломассоэнергообмена и устройство для его осуществления

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365139A (en) * 1964-09-16 1968-01-23 British Oxygen Co Ltd Conveying systems for flexible elongate material
US3799211A (en) * 1971-08-05 1974-03-26 Zbrojovka Vsetin Np Method of and apparatus for preparing a weft supply in a magazine for weft insertion in shuttleless looms

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365139A (en) * 1964-09-16 1968-01-23 British Oxygen Co Ltd Conveying systems for flexible elongate material
US3799211A (en) * 1971-08-05 1974-03-26 Zbrojovka Vsetin Np Method of and apparatus for preparing a weft supply in a magazine for weft insertion in shuttleless looms

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033384A (en) * 1974-08-26 1977-07-05 Crompton & Knowles Corporation Means for and method of supplying weft yarn to an outside filling supply loom
US4002190A (en) * 1974-11-15 1977-01-11 Vyzkumny A Vyvojovy Ustav Device for depositing weft thread supplies in jet looms
US4753274A (en) * 1984-08-23 1988-06-28 Elitex Koncern Textilniho Strojirenstvi Method of and apparatus for inserting weft threads
US4821781A (en) * 1986-10-31 1989-04-18 Picanol N.V. Weft accumulating method and assembly for weaving machines
US4947898A (en) * 1987-11-05 1990-08-14 Picanol N.V. Weft thread supply via two accumulators

Also Published As

Publication number Publication date
FR2232630A1 (de) 1975-01-03
FR2232630B1 (de) 1976-06-25
CH558847A (de) 1975-02-14
DE2427400B2 (de) 1978-05-03
BE813539A (fr) 1974-07-31
JPS5245825B2 (de) 1977-11-18
GB1414451A (en) 1975-11-19
DE2427400C3 (de) 1979-01-04
DE2427400A1 (de) 1975-01-02
JPS5014863A (de) 1975-02-17

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