US3911968A - Devices for fluid insertion of filling yarns - Google Patents

Devices for fluid insertion of filling yarns Download PDF

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Publication number
US3911968A
US3911968A US480291A US48029174A US3911968A US 3911968 A US3911968 A US 3911968A US 480291 A US480291 A US 480291A US 48029174 A US48029174 A US 48029174A US 3911968 A US3911968 A US 3911968A
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United States
Prior art keywords
channel
reed
beating
forming blades
loom
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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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US480291A
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English (en)
Inventor
Hans Zollinger
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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Application filed by Maschinenfabrik Rueti AG filed Critical Maschinenfabrik Rueti AG
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Publication of US3911968A publication Critical patent/US3911968A/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay
    • 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 present invention relates to devices for a 100m for [30] Foreign Application Priority Data inserting filling yarns by means of a fluid, the loom having a reed for the beating-up of the filling yarn June 20, 1973 Switzerland 8938/73 which has j been inserted, the devices for the inser tion of the filling yarns having a comb of parallel 2% 139/ 5835 2432 channel-forming blades that form a guide channel for i 123 127 R the fluid, and the channel-forming blades each having 1 m 0 are P 188 a recess which corresponds to the cross-section of the guide channel and has an outlet opening which faces References Cited the place of the beating-up of the filling yarn.
  • the channel-forming blades are firmly connected to the lay in such a manner that during the beating-up movement of the lay they emerge completely from the shed in order to permit the reed to beat-up the filling thread which was previously inserted and upon the following rearward movement of the lay again move between warp yarns in order, upon the next insertion of the filling yarn, to assure the desired guide within the shed of the fluid serving for the insertion of the filling yarn.
  • the outlet opening of the recess of each channel-forming blade must, in this connection, be so directed that the filling thread which has been inserted in each case automatically slips out through this opening when the channel-forming blades are moved out of the shed.
  • the introduction of the channel-forming blades between warp yarns after each beating-up of the filling thread is not an easy matter, since at times a warp yarn can remain caught on a channel-forming blade or even enter into the recess thereof, which leads to defects in weaving.
  • the teeth of the reeds themselves are developed as channelforming blades, each having a recess to form a guide channel for the stream of air serving for the insertion of the filling yarn.
  • the recess of each channel-forming blade is, in this connection, so developed and arranged that the filling yarn which has been inserted remains in each case in the guide channel during the beating-up and emerges from the guide channel only upon the following rearward movement of the lay. For this, it is necessary to provide the recess of each blade with an outlet opening facing the beating-up point of the filling yarn.
  • the channel-forming blades do not emerge out of the shed and then enter again between warp yarns, for which reason the above described disadvantage of the known looms is avoided.
  • the reed and channelforming blades in their beating-up position have portions which extend forward beyond the point of beating'up, said portion defining the recess which receives the filling yarn.
  • the said forward extending portions in their turn have the result that the stretchers necessary to obtain a proper fabric cannot be arranged at a sufficiently small distance from the place of beating-up of the filling yarn. This has the result that the fabric shrinks somewhat in width at the beating-up point and the warp yarns therefore no longer extend parallel at the edge portions of the reed.
  • the main object of the present invention is to develop a loom of the aforementioned type, in order to avoid the above described disadvantages of known embodiments, in such a manner and relatively simple fashion that it does not require either special warpyarn entering and exiting channel-forming blades nor special stretchers in order to be able to maintain a desirably small distance between the point of beating-up of the filling yarn and the stretchers of customary development, and that the cross-section of the guide channels formed by the channel-forming blades can be developed without regard to the stretchers.
  • the channelforming blades are not in front of the teeth of the lay at the moment that the filling yarn is beaten-up, for which reason the stretchers can be arranged without difficulty at a sufficiently small distance apart in front of the place of the beating-up of the filling.
  • the stretchers upon the beating-up do not enter into the guide channel for the fluid serving for the insertion of the filling yarn so that the cross-section of the guide channel can be selected in the most suitable shape and size without regard to the construction of the stretchers so that specially developed stretchers are not required.
  • the channel-forming blades need not be moved out of the web before the beating-up of a filling yarn and therefore need not be introduced and be moved between the warp yarns but can remain continuously between the warp yarns, like the teeth of the lay.
  • the channel-forming blades are advisedly held by at least one ledge which extends on the side of the reed which faces away from the fell of the cloth.
  • a ledge which holds the channel-forming blades is fastened to supporting arms which are pivotally connected to the lay and means are provided for deriving a predetermined swinging movement of the supporting arms from the movement of the lay.
  • the supporting arms can be seated on a shaft which is supported on the lay and on which there is furthermore fastened at least one link arm which has a part which engages in a fixed slotted link.
  • the slotted link has a course which deviates from an arcuate path around the axis of swing of the lay swords in order to impart the channelforming blades the desired movement with respect to the reed.
  • the channel-forming blades may each have a linear edge portion on the edge thereof, which continues from the outlet opening, and
  • FIG. 1 shows a view in partial vertical section along the warp yarns of the parts of a loom of importance for the present invention, the moving parts being shown in the position in which they are upon the insertion of the filling yarn;
  • FIG. 2 is a similar view in partial vertical section in which, however, the moving parts are shown in the position occupied by them during the beating-up of the filling yarn.
  • the loom shown in FIGS. 1 and 2 has a lay 11 which bears a reed 12 having linearly extending teeth 13.
  • the lay 11 is supported by lay swords 14 on a shaft 15 which is supported in the stand (not shown) of the loom and permits of the swinging of the lay swords 14 around a pivot 16.
  • On the lay swords 14 there is rotatably supported a shaft 17 which extends parallel to the lay 11 and on which there acts one end of each of two lay connecting rods 18.
  • the other end of these connecting rods 18 is connected in known manner (not shown) with an eccentric or a crank with the main shaft of the loom so that, upon the rotation of the main shaft, the lay 11 moves back and forth.
  • warp yarns 20 which together with the filling yarns (not shown) form the desired cloth 21.
  • the beating-up of the filling yarn which has been previously inserted is effected at the beating-up point 23 by means of the teeth 13 of the reed, as is generally known.
  • stretchers 24 of customary construction which grasp the edge portions of the resultant cloth 21 and continuously pull it towards the outside in order to stretch the cloth widthwise so that the warp yarns 20 of the upper group of warp yarns and of the lower groups of warp yarns extend in parallel towards the beating-up point 23.
  • channel-forming blades 25 Parallel to the teeth 13 of the reed 12 there are provided channel-forming blades 25 each of which engages between two reed teeth 13.
  • the reed teeth 13 and channel-forming blades 25 can be arranged one after the other.
  • the device may be provided with fewer channel-forming blades than reed teeth, for instance in the manner that every five successive reed teeth are followed by one channel-forming blade.
  • the channel-forming blades 25 each has a recess 26 with an outlet opening 27 which is directed towards the beating-up point 23 of the filling yarn. All recesses 26 of the channel-forming blades 25 together form a guide channel for a fluid serving for the insertion of the filling yarns, for instance compressed air.
  • the said fluid is fed by means of a main nozzle located on the shed side and a plurality of auxiliary nozzles 28 which are fed via hoses 29, the fluid being supplied from a fluid source 29A.
  • the auxiliary nozzles 28 are arranged vertically at suitable distances apart along the lay 11 and fastened to the lay.
  • the outlet openings of the nozzles 28 are so directed that a stream of fluid is produced in the guide channel formed by the recesses 26 of the channel-forming blades 25 transversely through the shed 22 when the nozzles are placed in operation.
  • each channelforming blade 25 has a linearly extending edge portion 30.
  • the channel-forming blades 25 are not parts of the reed 12 but are held independently of the reed on a lower ledge 31 and an upper ledge 32, the two of which extend parallel to the lay 11 and are arranged on the side of the reed 12 facing away from the beating-up point 23.
  • the lower ledge 31 is clamped in a beam which is supported by means of two or more supporting arms 34 on the aforementioned shaft 17.
  • the ledges 31 and 32 are a sufficient distance apart for the warp yarns which form the shed 22 to pass through between them.
  • the shape of each channel-forming blade 25 is essentially similar to that of a crescent whose convex edge faces the beating-up point 23 and has the recess26 as well as the linearly extending portion 30.
  • the channel-forming blades 25 can be moved with respect to the reed 12.
  • the link guide 36 has a path 39 which differs from a circular path 38 around the axis of swing of the lay swords 14 in such a manner that upon the beatingup movement of the lay II the channel-forming blades 25 move less far, i.e. by a smaller distance, towards the filling yarn beating-up point 23 than do the teeth 13 of the reed 11.
  • the lay 11 is in its rear dead-center position, i.e. at its greatest possible distance from the beating-up point 23 ofthe filling yarn
  • the channel-forming blades 25 extend between the teeth 13 of the reed 12 to such an extent that the entire recess 26 of each channel-forming blade is located on the front side of the reed 12 facing the beating-up point 23.
  • the shaft 17 is turned by the link guide 36, the roller 37 and the link arm 35 in such a manner that the supporting arms 34 and the channel-forming blades 25 are swung slightly to the left as seen in the figures with reference to the reed 12, which has the result that the channelforming blades 25 move less rapidly and therefore over a smaller distance towards the beating-up point 23.
  • the filling yarn which was previously inserted is therefore pushed by means of the teeth 13 of the reed 12 out of the guide channel formed by the recesses 26 and through the outlet openings 27 and beaten-up in customary manner onto the cloth 21 which has already been produced.
  • channel-forming blades 25 have been shown moved back slightly further so that the linear edge portions 30 of the channel-forming blades are removed a small distance from the beatingup point 23.
  • This solution is selected when a highly precise adjustment of the channel-forming blades 25 and- /or of the means serving for their drive is not necessary and can therefore be avoided.
  • the channel-forming blades 25 are then moved again forward relative to the teeth 13 of the reed 12 until the guide channel formed by the recess 26 for the fluid which serves for the insertion of the filling yarn is completely on the front side or beating-up side of the reed.
  • the channel forming blades 25 continuously remain between the warp yarns but periodically carry out a forward and backward movement with respect to the teeth 13 of the reed 12 in such a manner that upon the insertion of each filling yarn the guide channel formed by the recess 26 of the channel-forming blades for the fluid serving for the insertion of the filling yarn lies on the beating-up side ofthe reed l2 and then upon the beating-up of the filling yarn the channel-forming blades 25 move back relative to the reed 12 in order to enable the reed to beat-up in conventional manner.
  • the stretchers 24 can therefore be arranged at an advantageously small distance in front of the beating-up point 23 without thereby entering into conflict with the channel-forming blades 25.
  • Loom having a device for the insertion of filling yarns by means of a fluid, having a reed mounted on and swinging back and forth with a lay for beating-up of the filling yarn, comprising a comb of parallel channel-forming blades defining a guide channel therein for fluid insertion of the filling yarn, the channel-forming blades extending fully through the warp threads at all times and each having a recess corresponding to the cross-section of the guide channel, each said recess having an outlet opening which faces the beating-up line of the filling yarns, each of the channel-forming blades engaging between teeth of the reed and being mounted on the lay swords and swingable therewith and controlled by a guiding means with respect to the movement of the reed in such a manner that upon the beating-up movement of the reed the channel-forming blades move a smaller distance towards the filling yarn beating-up point than the teeth of the reed, the latter moving at least up to the outlet openings of

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US480291A 1973-06-20 1974-06-17 Devices for fluid insertion of filling yarns Expired - Lifetime US3911968A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH893873A CH554434A (de) 1973-06-20 1973-06-20 Webmaschine mit einrichtungen zum eintragen der schussfaeden mittels eines fluidums.

Publications (1)

Publication Number Publication Date
US3911968A true US3911968A (en) 1975-10-14

Family

ID=4346507

Family Applications (1)

Application Number Title Priority Date Filing Date
US480291A Expired - Lifetime US3911968A (en) 1973-06-20 1974-06-17 Devices for fluid insertion of filling yarns

Country Status (7)

Country Link
US (1) US3911968A (enrdf_load_stackoverflow)
JP (1) JPS5020069A (enrdf_load_stackoverflow)
CH (1) CH554434A (enrdf_load_stackoverflow)
CS (1) CS171287B2 (enrdf_load_stackoverflow)
DE (1) DE2420368A1 (enrdf_load_stackoverflow)
GB (1) GB1443260A (enrdf_load_stackoverflow)
SU (1) SU634680A3 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127148A (en) * 1975-03-20 1978-11-28 Ruti-Te Strake B.V. Weaving machine of the type in which weft insertion is effected by a fluid flow
US4485850A (en) * 1981-03-11 1984-12-04 Tsudakoma Kogyo Kabushiki Kaisha Auxiliary device for weft insertion on an air jet loom
WO1994005840A1 (en) * 1992-09-09 1994-03-17 VY^´ZKUMY^´ ÚSTAV TEXTILNÍCH STROJU^o LIBEREC A.S. A method of insertion of the weft thread into the shed of an air-operated jet loom and a device for carrying out the method
US20080271807A1 (en) * 2006-09-07 2008-11-06 Sultex Ag Method and a stretching device for the holding of a weft thread

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5927411B2 (ja) * 1978-02-27 1984-07-05 株式会社豊田中央研究所 ジエツトル−ムにおける緯入れ装置
DE2901311C2 (de) * 1979-01-15 1984-07-19 Walter 8832 Weissenburg Scheffel Webmaschine mit Schußeintrag durch ein strömendes Medium
US4391305A (en) * 1979-05-18 1983-07-05 Nissan Motor Co., Ltd. Weft picking device of air jet type weaving loom
JPS5642988U (enrdf_load_stackoverflow) * 1979-09-07 1981-04-18
US4357963A (en) * 1980-05-16 1982-11-09 Walter Scheffel Loom with weft picking by a flowing medium
CH668784A5 (de) * 1984-06-15 1989-01-31 V U Koncernova Ucelova Org Zvs Vorrichtung zur gewebebildung auf pneumatischen webmaschinen.
JPH0348226Y2 (enrdf_load_stackoverflow) * 1985-08-29 1991-10-15
BE1008211A5 (nl) * 1993-07-29 1996-02-13 Wiele Michel Van De Nv Inrichting voor het positioneren van een inslagschaar op een weefmachine.
CN115058820A (zh) * 2022-08-02 2022-09-16 青岛江轩机械制造有限公司 一种可微调摇摆轴

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714403A (en) * 1953-04-01 1955-08-02 Crompton & Knowles Loom Works Loom operating with gripper shuttle
US2793658A (en) * 1954-08-31 1957-05-28 George W Dunham Lay and pilot guides
US3139118A (en) * 1958-05-09 1964-06-30 Svaty Vladimir Pneumatic weft guides for looms

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714403A (en) * 1953-04-01 1955-08-02 Crompton & Knowles Loom Works Loom operating with gripper shuttle
US2793658A (en) * 1954-08-31 1957-05-28 George W Dunham Lay and pilot guides
US3139118A (en) * 1958-05-09 1964-06-30 Svaty Vladimir Pneumatic weft guides for looms

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127148A (en) * 1975-03-20 1978-11-28 Ruti-Te Strake B.V. Weaving machine of the type in which weft insertion is effected by a fluid flow
US4485850A (en) * 1981-03-11 1984-12-04 Tsudakoma Kogyo Kabushiki Kaisha Auxiliary device for weft insertion on an air jet loom
WO1994005840A1 (en) * 1992-09-09 1994-03-17 VY^´ZKUMY^´ ÚSTAV TEXTILNÍCH STROJU^o LIBEREC A.S. A method of insertion of the weft thread into the shed of an air-operated jet loom and a device for carrying out the method
US20080271807A1 (en) * 2006-09-07 2008-11-06 Sultex Ag Method and a stretching device for the holding of a weft thread

Also Published As

Publication number Publication date
CH554434A (de) 1974-09-30
JPS5020069A (enrdf_load_stackoverflow) 1975-03-03
CS171287B2 (enrdf_load_stackoverflow) 1976-10-29
DE2420368A1 (de) 1975-01-23
GB1443260A (en) 1976-07-21
SU634680A3 (ru) 1978-11-25

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