US3502253A - Device for temporarily storing a length of a thread - Google Patents

Device for temporarily storing a length of a thread Download PDF

Info

Publication number
US3502253A
US3502253A US696765A US3502253DA US3502253A US 3502253 A US3502253 A US 3502253A US 696765 A US696765 A US 696765A US 3502253D A US3502253D A US 3502253DA US 3502253 A US3502253 A US 3502253A
Authority
US
United States
Prior art keywords
thread
channel
shaped space
channel shaped
jet
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
US696765A
Other languages
English (en)
Inventor
Hubert Peter Van Mullekom
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.)
MAS FAB L TE STRAKE NV
Original Assignee
Strake Maschf Nv
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Strake Maschf Nv filed Critical Strake Maschf Nv
Application granted granted Critical
Publication of US3502253A publication Critical patent/US3502253A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • 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
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/368—Air chamber storage devices

Definitions

  • the device comprises a relatively wide, thin channel for receiving a length of the thread in the form of an elongated loop, the lateral side walls of the channel being substantially parallel.
  • One or more jet nozzles are arranged adjacent to one end of the channel and extend across substantially the entire width of the channel from one lateral side wall of the channel to the other.
  • the nozzle or nozzles are so directed as to discharge fluid into the channel in a flow which is generally longitudinal and laterally symmetrical with respect to the channel, and which extends across the entire width of the channel so as to draw the elongated loop of thread into the channel while maintaining the two legs of the loop close to the two opposite lateral side walls of the channel in order to prevent the thread from tangling in the channel.
  • the invention relates to a device for temporarily storing a length of a thread, which device possesses a channel shaped space for taking up a length of a thread and a jet assembly for a fluid, which assembly is adapted in such a manner that the jet, leaving a jet nozzle of the assembly flows through the channel shaped space as known per se.
  • the channel shaped space is connected to a suction device and the thread can be conveyed through the channel shaped space by an air stream,
  • nozzle for porducing a jet of the fiuid has an additional function to force the thread quickly into the channel shaped space.
  • the temporary storing of a length of the thread by means of suction action has the drawback, that the thread cannot be inserted quickly enough into the channel shaped space or that a very great suction capacity is required in order to obtain a quick insertion of the thread into the channel.
  • the object of the invention is to improve such a device in order to attain a quick storing of a length of a thread in the channel shaped space without using much energy for the conveying medium, such as air.
  • a narrow channel shaped space is to be preferred, as in textile machinery not much room is available between two thread guides, between which a thread is to be guided.
  • a narrow channel shaped space can lead to difficulties, when the length of a thread is to be stored in the shape of a loop and the legs of the loop can easily touch each other, resulting in an entanglement of the thread.
  • the height of the channel shaped space it need only be slightly larger than the thickness of the thread, whereas the width of this channel shaped space must be sufficient to prevent contacting of the legs of the loop shaped thread to be inserted into the channel shaped space.
  • the length of the channel shaped space is adapted to the length of the loop in the thread, which is to be temporarily stored.
  • one or more jet nozzles for the conveying medium may be ar ranged over the entire width of the channel shaped space in front of the mouth of same. Such an arrangement is to be preferred, when the device according to the invention is to be used for taking up an excess in the length of a thread which runs between two points. In such a case the thread is guided between the mouth of the channel shaped space and the jet nozzles for the fluid.
  • one or more jet nozzles for the conveying medium may be provided in a lateral wall of the channel shaped space, whereas the jet nozzles are directed longitudinally of the channel shaped space.
  • Such an arrangement is very suitable when the channel shaped space forms a part of a device for weft inserting in a jet operating loom.
  • the flow of the conveying medium through the chanel be regulated in such a manner, that the legs of the loop of the thread tend not to move toward each other but to move away from each other.
  • the opening of the jet nozzle have the shape of a small slot, in which the width varies longitudinally of the slot.
  • a number of the jet nozzles have differently restricted passages so as to discharge different volumes of air into the channel shaped space.
  • jet nozzles be positioned in such a manner, that the jets diverge longitudinally of the channel shaped space.
  • a practical embodiment according to the invention is attained in that the jet nozzles are provided with a restriction valve for regulating the jets, leaving the nozzles.
  • FIG. 1 shows a diagram of a track of the thread in a textile machine, in which a thread is drawn from a thread package and in which diagram a device for temporarily storing a part of a thread according to the invention is arranged, showing the main parts of this device;
  • FIG. 2 shows a cross section along the line IIII in FIG. 1 of the channel shaped space of the device according to the invention
  • FIG. 3 shows the entrance for the thread and the jet 3 medium in the device according to the invention in cross section along the line III-III in FIG. 1;
  • FIG. 4 shows a cross section along the line IV-IV in FIG. 1 at the place of a jet nozzle
  • FIG. is a cross section of a modified construction of the device according to the invention, in which this device is adapted to launch a thread, which cross section has been taken longitudinally of the channel shaped space;
  • FIG. 6 is a perspective view of the parts shown in FIG. 5, however, in an exploded position.
  • FIG. 7 is a cross section along the line VIIVII in FIG. 5 from which the shape of the cross section of the channel shaped space appears.
  • FIG. 1 a track of a thread in a textile machine is diagrammatically shown and the thread is conveyed by jet action of a fluid.
  • a thread 2 is drawn through a thread guide 3 from a thread package 1 by means of two rollers 4a and 4b.
  • the rollers 4a and 4b rotate with a constant velocity and they are e.g. connected to a rotating shaft of the textile machine, on which the device according to the invention is mounted.
  • a jet nozzle 5 which e.g. operates by air under pressure the thread 2 is further conveyed.
  • a control valve 7 is situated in a supply line 6 for a fluid e.g. air under pressure.
  • the line 8 for the fluid is arranged between the control valve 7 and the jet nozzle 5.
  • the control valve 7 can be operated in such a manner that the fluid from the supply line 6 either flows through the line 8 or the line 11.
  • the line 11 is connected to the device for temporarily storing a length of thread, which device has been generally indicated by the reference numeral 12 in FIG. 1.
  • the device 12 consists in a holder 13 or shaft for a loop of a thread, which holder is provided with an internal channel shaped space, which is connected at one end to a head 14. The opposite end of the space is open to the surrounding air. The open end is indicated by the reference numeral 16b.
  • the channel shaped space is indicated by a dash line 16 in FIG. 1.
  • the cross section of this channel shaped space 16 is relatively flat as appears from FIG. 2.
  • the central part 15 of the channel shaped space 16 is less in size than the cross section at the sides of the channel shaped space.
  • the thread is to be inserted in the shape of a loop 2a into the space 16 on the side of the head 14.
  • the head 14 is provided with a channel 17 for the thread.
  • This channel has an entrance 18 and an outlet 19.
  • the channel 17 debouches in a fiat slot 20, whose shape is adapted to the shape of the space 16.
  • the slot 20 thus can be considered as a part of the channel shaped space 16.
  • a channel 21 is provided in the head 14 and the line 11 for the fluid has been connected to this channel 21.
  • a hand operable valve 22 and a restriction valve 23 have been situated in the channel 21.
  • the valve 22 remains in a position in which the channel 21 is uninterrupted under normal conditions as shown in the cross section of FIG. 3.
  • the channel 21 is provided with jet nozzles in the shape of narrow channels 24, which debouch into the channel 17 in front of the slot 20 and in front of the channel shaped space 16.
  • the jet nozzles in the shape of the channels 24 are not only shown in FIG. 1 but also in the cross section of FIG. 4.
  • the channel 21 is provided with a branch 25 upstream of the valve 22, which branch debouches also into the channel 17.
  • the channels 24 adapted as jet nozzles are each provided with a restriction valve in the shape of a screw 26 to regulate the flow of the medium through the channels 24 for a purpose, which will be described later.
  • the branch 25 is also provided with a restriction valve in the shape of a screw 26a.
  • a thread clamp 27 is provided in the outlet part 19 of the channel 17, which thread clamp can hold the thread in the channel 17 The purpose of the thread clamp 27 will be described later.
  • the leading end of the thread 2, supplied by the rollers 4a and 4b, is held at the entrance 18 of the channel 17.
  • the valve 22 will be pressed down by hand, owing to which the passage of the channel 21 is interrupted.
  • the conveying medium, such as air under pressure will flow only through the branch 25 into the channel 17, owing to which an injector action is created and the thread will be sucked into the entrance 18 and will be conveyed through the channel 17 to the outlet 19.
  • the thread can pass the thread clamp 27, which at this operation is in an open position. Further the thread 2 is inserted into the launching device 5 in the shape of a jet nozzle. Now it is necessary to close the thread clamp 27, because after the valve 22 is released the channel 21 will be uninterrupted again and the conveying medium can flow through the channels or jet nozzles 24.
  • the jet nozzles 24 are not parallel, but diverge in the direction of the jets, as appears from FIG. 1. This arrangement is desired, because the legs 21) and 2b of the loop 2a may not come in touch with each other when the loop 2a extends far in the channel shaped space 16.
  • the quantity of supplied air, flowing out of the different jet nozzles 24 differs also in order to obtain different air jets for the same purpose, that is to say to keep the legs 2b and 2b of the loop 2a apart from each other.
  • the quantity of conveying air leaving the centrally positioned jet nozzles 24 is less than the quantity of air, leaving the jet nozzles at the sides of the channel shaped space 16.
  • quantity of air, leaving the nozzles 24, can be empirically adjusted.
  • one single jet nozzle in the shape of a narrow slot can be provided also.
  • the shape of the slot is to be adapted in order to obtain the desired pattern in the sectors of velocity within the air jet, leaving the slot shaped jet nozzle.
  • the jet nozzles 24 be positioned in front of the mouth of the channel shaped space 16.
  • the jet nozzles can be positioned also in a side wall of the channel shaped space and an embodiment of such a construction is shown in FIG. 5.
  • the part 13a is provided with the channel shaped space 16a, which is open at the end 16b.
  • a filter (not shown) may be positioned at the open end of the channel shaped space 16a for the purpose of collecting dust.
  • the mouth of the channel shaped space 1611 is connected to a chamber 28 for presenting a thread.
  • the part 13a having the channel shaped space 16a, is connected to a device for launching a thread, which device is generally indicated by the reference numeral 29.
  • the chamber 28 is connected to a hopper shaped channel 30 of the launching device, which is provided with a jet nozzle 5 for a jet medium, which is supplied through the line 8a.
  • the thread in the shape of a loop is presented through the opening 31 by means of a presenting needle 32 and further the thread is brought in front of the mouth of the channel shaped space 16a by means of a hook 32a.
  • a part of the wall of the channel shaped space 16a is constituted by the upper surface 33 of a block 34.
  • This block is provided with a channel 21a for the conveying medium, which is supplied through a line 11a.
  • the channel 21a is provided with a number of channels 24a, which debouch into the side wall of the block near its upper surface 33.
  • the channels 24a are provided wtih restriction valves in the shape of a screw 26 in the same manner as is provided in the embodiment according to FIG. 1 for the purpose of regulating the flow of air jets, leaving the channels 24a.
  • the wall of the channel shaped space is inclined in front of the channels 240, as indicated by the reference numeral 35 in FIGS. 5 and 6.
  • a hook 36 is provided in order to bring the loop of the thread of the chamber 28 in front of the jet nozzles 24a.
  • the stem of the hook is inclined with respect to the wall of the channel shaped space 16a and the hook 36 disappears in a narrow slot 37 during its movement, owing to which the thread comes free from the hook.
  • the hook 36 is driven by a mechanism, which also controls the presenting needle 32 and the hook 32a.
  • the channel shaped space 16a is provided with a reduced central part 15a, having its opposite walls parallel to each other, and widened side parts 16a as shown in the cross section of FIG. 7.
  • the widened parts are also shown in FIG. 6.
  • the channels 24a diverge in the direction of flow of the jets for the same purpose as has been described with reference to FIG. 1.
  • a device for temporarily storing a length of a thread comprising a relatively wide, thin channel for receiving a length of the thread in the form of an elongated loop, the lateral side walls of the channel being substantially parallel, wherein the improvement comprises a jet assembly for discharging a fluid, having one or more jet nozzles which are arranged adjacent to one end of the channel and extend across substantially the entire width of the channel from one lateral side wall of the channel to the other, and which are so directed as to discharge fluid into the channel in a flow which is generally longitudinal and laterally symmetrical with respect to the channel and which extends across the entire width of the channel so as to draw the elongated loop of thread into the channel while maintaining the two legs of the loop close to the two opposite lateral side walls of the channel in order to prevent the thread from tangling in the channel.
  • a device characterized in that one or more jet nozzles are adapted in such a manner, than an air stream is created within the channel, which stream of air has a higher velocity at the opposite side walls of the channel than in the central part of this channel.
  • a device wherein a plurality of jet nozzles are provided which are restricted in different degrees so that the volume of air discharged varies from one jet nozzle to another.
  • each jet nozzle is provided with a restriction valve.
  • one or more jet nozzles are provided in a laterally extending wall of the channel, adjacent to one end of the channel, and are directed generally longitudinally with respect to the channel, so as to discharge fluid through the channel.
  • a device wherein a plurality of jet nozzles are provided which are so directed as to produce jets which diverge slightly from one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US696765A 1967-01-18 1968-01-10 Device for temporarily storing a length of a thread Expired - Lifetime US3502253A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6700828A NL6700828A (xx) 1967-01-18 1967-01-18

Publications (1)

Publication Number Publication Date
US3502253A true US3502253A (en) 1970-03-24

Family

ID=19799027

Family Applications (1)

Application Number Title Priority Date Filing Date
US696765A Expired - Lifetime US3502253A (en) 1967-01-18 1968-01-10 Device for temporarily storing a length of a thread

Country Status (6)

Country Link
US (1) US3502253A (xx)
JP (1) JPS4922871B1 (xx)
CH (1) CH461401A (xx)
DE (1) DE1710326C3 (xx)
GB (1) GB1216197A (xx)
NL (1) NL6700828A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4119253A (en) * 1977-06-20 1978-10-10 Owens-Corning Fiberglas Corporation Method and apparatus for controlling the advancement of a strand
US4300711A (en) * 1979-03-23 1981-11-17 Luwa Ag Apparatus for the pneumatic transport of textile band material
US4351369A (en) * 1978-12-12 1982-09-28 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fluid supply apparatus in shuttleless loom
US4410018A (en) * 1980-09-09 1983-10-18 Sulzer Brothers Limited Nozzle structure for a weaving machine
US4418728A (en) * 1980-12-17 1983-12-06 Aktiengesellschaft Adolph Saurer Weft thread-storage apparatus for a loom, especially a gripper loom
WO1996019604A1 (de) * 1994-12-22 1996-06-27 Textilma Ag Bandwebmaschine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7003045A (xx) * 1970-03-03 1971-09-07
US3731713A (en) * 1971-04-19 1973-05-08 J Lachapelle Water jet loom
JPS5324458A (en) * 1976-08-10 1978-03-07 Nissan Motor Device for inserting weft in storage tube

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093282A (en) * 1959-11-12 1963-06-11 British Nylon Spinners Ltd Controlling of tension in running threads

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093282A (en) * 1959-11-12 1963-06-11 British Nylon Spinners Ltd Controlling of tension in running threads

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4119253A (en) * 1977-06-20 1978-10-10 Owens-Corning Fiberglas Corporation Method and apparatus for controlling the advancement of a strand
US4351369A (en) * 1978-12-12 1982-09-28 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fluid supply apparatus in shuttleless loom
US4300711A (en) * 1979-03-23 1981-11-17 Luwa Ag Apparatus for the pneumatic transport of textile band material
US4410018A (en) * 1980-09-09 1983-10-18 Sulzer Brothers Limited Nozzle structure for a weaving machine
US4418728A (en) * 1980-12-17 1983-12-06 Aktiengesellschaft Adolph Saurer Weft thread-storage apparatus for a loom, especially a gripper loom
WO1996019604A1 (de) * 1994-12-22 1996-06-27 Textilma Ag Bandwebmaschine
US5878787A (en) * 1994-12-22 1999-03-09 Textilma Ag Ribbon loom with separate guide eye

Also Published As

Publication number Publication date
CH461401A (de) 1968-08-15
JPS4922871B1 (xx) 1974-06-12
DE1710326B2 (de) 1974-07-18
DE1710326A1 (de) 1971-09-16
NL6700828A (xx) 1968-07-19
DE1710326C3 (de) 1975-03-06
GB1216197A (en) 1970-12-16

Similar Documents

Publication Publication Date Title
US3502253A (en) Device for temporarily storing a length of a thread
US3744533A (en) Adjustment of filling tension in fluid jet loom and apparatus thereof
US3818952A (en) Jet operated weaving machine
US3821972A (en) Method of picking weft yarns in shuttleless looms
US3136539A (en) Sheet handling
US4347872A (en) Air weft insertion system
US4183382A (en) Apparatus for weft insertion in a weaving loom
NO169023B (no) Fremgangsmaate for bleking og delignifisering av celluloseholdige produkter
CA1151508A (en) Strand delivery and storage system
EP2318580B1 (en) Storage element for weft thread
US3451437A (en) Device for launching a thread by jet action of a fluid to be used in conjunction with a loom
CS225821B2 (en) The weft picking device of the jet loom
US4715410A (en) Weaving loom
EP0034576A1 (en) Method for supplemental fluid ejection on a shuttleless loom and an auxiliary nozzle used therefor
US4074727A (en) Liquid supply system and nozzle for jet weaving looms
CS215081B2 (cs) Způsob prohozu útku u tryskových tkacích stavů
JPS5912778B2 (ja) ジエツトル−ムにおける緯入れ方法ならびに装置
RU95112479A (ru) Способ прокладывания уточной петли в зев пневматической форсуночной ткацкой машины и устройство для выполнения этого способа
US3367371A (en) Device for introducing a weft thread into a shed
GB2060719A (en) Jet loom
WO1991002114A1 (en) Drawing device
KR790001944B1 (ko) 유체분사식 직기의 분사압 조정장치
JPS60252749A (ja) 空気噴流式織機
USRE32916E (en) Method for transporting a weft thread through a weaving shed and a loom for performing said method
KR800001666B1 (ko) 저류관(貯留管)의 위사 인통 장치