US3580444A - Device for localizing an excess in length in a thread - Google Patents

Device for localizing an excess in length in a thread Download PDF

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Publication number
US3580444A
US3580444A US755260A US3580444DA US3580444A US 3580444 A US3580444 A US 3580444A US 755260 A US755260 A US 755260A US 3580444D A US3580444D A US 3580444DA US 3580444 A US3580444 A US 3580444A
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United States
Prior art keywords
thread
loop
excess
length
nozzle
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
US755260A
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English (en)
Inventor
Hubert P 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.)
Machinefabriek 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.)
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Publication date
Application filed by Strake Maschf Nv filed Critical Strake Maschf Nv
Application granted granted Critical
Publication of US3580444A publication Critical patent/US3580444A/en
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Expired - Lifetime legal-status Critical Current

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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
    • 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

  • a downward-directed nozzle is arranged adjacent to the first thread-guiding element, through which thread enters the loop, for discharging fluid downward along the descending leg of the loop in order to place the descending leg under tension so as to prevent the loop from tangling.
  • the ascending leg of the loop is relatively free of tension.
  • the invention relates to a device for localizing an excess in length in a thread.
  • the shaft is adapted as a guide having two opposite walls close together between which a loop in the thread can be guided.
  • a further drawback of such a device is the need of a relative long narrow shaft to keep the thread tensioned in the stream of air. When a considerable excess in length in the thread is to be localized consequently the shaft is long and it takes a considerable amount of time to remove the thread therefrom.
  • the object of the invention is a simple device for localizing an excess in length in a thread which makes possible a high conveying speed of the thread and in which the excess of length in the thread can be removed at any time.
  • this is attained with a device which is characterized by a thread supply and a thread-conveying device, between which a jet nozzle for a fluid with guiding elements for the thread has been positioned in such a manner that the thread running from the supply device enters the path of the jet leaving the jet nozzle which thread is to be laterally drawn from the jet by means of the conveying device.
  • the thread-supplying device When the thread-supplying device is formed by rotating rollers drawing the thread from a thread package only a small jet nozzle is to be placed in the path of the thread which path is located by the rollers which constitute a thread-guiding element, or by a thread guide proper.
  • the thread can be drawn laterally out of the jet at any moment and the jet nozzle can be continuously operative when the thread-removing device, such as that provided in looms e.g. a device for weft inserting is only periodically operative.
  • the thread-removing device such as that provided in looms e.g. a device for weft inserting is only periodically operative.
  • a small jet action of the jet nozzle will be sufficient because the jet leaving the jet nozzle need not be used for conveying the thread.
  • a further advantage of the device according to the invention is the tension to which the thread between the jet nozzle and the thread-supplying device is subjected and the supplying device can be situated at a considerable distance from the device for localizing the excess in length in the thread.
  • a practical embodiment according to the invention is attained in that the jet nozzle has been positioned with respect to a guide for the thread in such a manner that the thread leaving this guide runs parallel to the jet leaving the jet nozzle.
  • the provision of such a guide near a jet nozzle is advantageous because the thread comes immediately in contact with the jet leaving the jet nozzle.
  • By means of another thread-guiding element spaced laterally from the jet nozzle the thread can be removed laterally from the jet.
  • a baffle has been situated parallel to a plane running through the jet leaving the jet nozzle and the thread which is laterally drawn from the jet.
  • the thread will run quietly even when a large loop in the thread has been formed and no other air current created by moving parts of the textile machinery will disturb the loop in the thread.
  • the baffle has been provided with lateral projecting sidewalls encompassing the plane running through the jet and the thread laterally drawn from the jet, resulting in a limiting of the area in which the loop in the thread can be formed.
  • FIG. 2 shown a front view, partly in section of a device according to FIG. 1 in a second embodiment.
  • the device for localizing an excess in length in a thread can be used in textile machinery in which a thread periodically has an increased running speed, without subjecting the thread to a high tension. Such circumstances occur e.g. in looms in which a thread is drawn from a thread package, which thread has to be inserted as a weft into the shed by jet action. When the jet leaving a weft-inserting nozzle acts on the thread this thread must not have a high resistance and the thread is to be supplied by a separate supplying device.
  • a thread 1 is drawn from a stationary thread package 2.
  • a thread eye 3 has been situated above the thread package 2, which thread eye can be fastened to a part of the textile machinery.
  • the provision of a thread eye has the advantage that a thread balloon can be formed when the thread 1 is drawn from the thread package 2 at a high speed.
  • the thread 1 runs from the thread eye 3 to a thread guide 4.
  • This thread guide 4 is positioned in front of two conical rollers 5 and 6.
  • the thread runs over a part of the conical circumferential surface of the roller 5 and is pressed against same by means of a roller 6.
  • the rollers 5 and 6 are driven e.g. by means of a separate driving mechanism or by means of a rotating shaft of a textile machine upon which the device according to the invention has been mounted.
  • the position of the thread guide 4 can be adjusted in a direction parallel to the axis of the roller 5, owing to which the drawing speed of the thread from the thread package and further the supplying speed of the thread to the remaining part of the machinery can be accurately adjusted with a given speed of rotation of the roller 5 because the circumferential speed of that part where the thread 1 makes contact with the circumferential surface of the roller 5 is a measure for the running speed of the thread. Consequently a thread-supplying device is formed by the rollers 5 and 6. Further the thread 1 runs to a thread-removing device which device has been generally indicated by the reference numeral 7 in FIG. 1.
  • the thread-removing device 7 is adapted as a jet nozzle for a fluid, e.g. air under pressure.
  • the jet nozzle is connected to a source 10 of a pressure medium, preferably air by means of a line 8 and a control valve 9 (diagrammatically shown).
  • the control valve is controlled e.g. by a part which rotates synchronously with the textile machine in such a manner that at a certain moment air from the source 10 is admitted to the jet nozzle 7, the thread will be ejected from the nozzle 7 e.g. as a weft into a shed.
  • the jet nozzle 7 becomes inoperative whereas the threadsupplying device formed by the rollers 5 and 6 is still operative.
  • the device according to the invention comprising a jet nozzle 11 which is directed in such a manner that the jet leaving the nozzle I1 is directed parallel to the thread delivered by the rollers 5 and 6.
  • the thread guide 12 has been arranged near the jet nozzle II. The thread supplied by the rollers 5 and 6 runs through the thread guide 12, which thread is stretched by the jet action of the jet nozzle 11.
  • the device according to the invention is provided with a baffle plate 16. Further the baffle plate possesses upright walls 170 and 17b encompassing the path of the thread between the thread eyes 12 and 13.
  • the rollers 5 and 6 form the thread-supplying device and the jet nozzle 7 forms the thread-removing device.
  • the design and construction of the thread-supplying device and the threadremoving device are independent of the construction of the jet nozzle I 1. Instead of removing the thread by the jet action of the jet nozzle 7 the thread can be removed in a mechanical manner.
  • the main purpose of FIG. I is to show how the excess in length in the thread between the rollers 5 and 6 and the jet nozzle 7 can be localized by the action and the arrangement of the jet nozzle 11.
  • a stationary thread package 2 with its thread eye 3 has been indicated again.
  • the rollers 5 and 6 for drawing the thread 1 from the thread package are diagrammatically indicated.
  • the ring nozzle 19 has been formed by a chamber in a block 21.
  • a channel 20 debouches in, the chamber of the ring nozzle 19.
  • a fluid such as air under pressure can flow through the channel 20 to the ring nozzle 19 and a jet will leave this ring nozzle which jet will be formed around the thread I.
  • secondary air stream can be created in the passage 18 which will tension the thread leaving the rollers 5 and 6.
  • the thread 1 will be conveyed laterally of the baffle 16 to a thread eye 13a.
  • the passage 18 can be adapted accordingly.
  • a channel 22 has been situated within the block 2ll above the baffle l6, and the channel 22 is connected to the ring nozzle 19 and debouches through a mouth 24 near the thread eye 13a at that side of the block where the loop in the thread is to be formed.
  • the channel 22 has been provided with an adjusting bolt 23 for choking the passage in the channel 22.
  • a jet can thus be created at the mouth 24 of the channel 22 which jet intersects the thread near the thread eye 130.
  • a good device for localizing an excess of length in a thread can be attained with very simple means as appears from the embodiments shown in the drawing, without the need of a complicated construction.
  • the ascending leg of the loop is relatively free of tension. That is true because the fluid-discharging capacity of the mouth 24, because of its small size and because of the choking action of the adjusting bolt 23, is substantially smaller than the fluiddischarging capacity of the relatively large nozzle 19.
  • the relatively small stream of fluid discharged from the mouth 24 assists in keeping the loop flat when a relatively large loop is employed.
  • a device for localizing an excess in length in a thread adapted to be interposed between a device for continuously supplying a thread and a device for intermittently conveying the thread, wherein the improvement comprises first and second thread-guiding elements between which is a space in which an excess in length in the thread can hang down from the thread-guiding elements in the form of a loop, a baffle extending downward from the first and second thread-guiding elements, ad'acent and arallel to the loop of thread whic h hangs down rom such e ements, to shield t e loop against air currents, and a downward'directed nozzle, arranged adjacent to the first thread-guiding element, through which the thread enters the loop, for discharging fluid downward along the descending leg of the loop in order to place the descending leg under tension so as to prevent the loop from tangling, the ascending leg of the loop being relatively free of tension.
  • baffle is provided, along its two vertical edges, with two sidewalls for confining and shielding the two legs of the loop.
  • a device for localizing an excess in length in a thread adapted to be interposed between a device for continuously supplying a thread and a device for intermittently conveying the thread, wherein the improvement comprises first and second thread-guiding elements, between which is a space in which an excess in length in the thread can hang down from the thread-guiding elements in the form of a loop, and a downward-directed nozzle, arranged adjacent to the first thread-guiding element, through which the thread enters the loop, for discharging fluid downward along the descending leg of the loop in order to place the descending leg under tension so as to prevent the loop from tangling a second downwarddirected nozzle, the fluid discharging capacity of which is substantially smaller than that of the first nozzle, arranged adjacent to the second thread-guiding element, for discharging fluid downward along the ascending leg of the loop, the ascending leg of the loop being relatively free of tension.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US755260A 1967-09-04 1968-08-26 Device for localizing an excess in length in a thread Expired - Lifetime US3580444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL676712130A NL147798B (nl) 1967-09-04 1967-09-04 Weefgetouw met een pneumatisch bediende bufferinrichting voor de inslagdraad.

Publications (1)

Publication Number Publication Date
US3580444A true US3580444A (en) 1971-05-25

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ID=19801115

Family Applications (1)

Application Number Title Priority Date Filing Date
US755260A Expired - Lifetime US3580444A (en) 1967-09-04 1968-08-26 Device for localizing an excess in length in a thread

Country Status (8)

Country Link
US (1) US3580444A (de)
JP (1) JPS5221107B1 (de)
BE (1) BE719951A (de)
CH (1) CH477581A (de)
DE (1) DE1774774C3 (de)
FR (1) FR1581247A (de)
GB (1) GB1241988A (de)
NL (1) NL147798B (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738396A (en) * 1972-03-27 1973-06-12 North American Rockwell Weft storage device
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
JPS4948956A (de) * 1972-06-16 1974-05-11
JPS4954671A (de) * 1972-05-10 1974-05-28
US3908707A (en) * 1972-12-22 1975-09-30 Rueti Te Strake Bv Device for the delivery of predetermined weft lengths in a shuttleless weaving machine
US3918501A (en) * 1973-06-21 1975-11-11 Du Pont Canada Feeder for tape weaving machine
US3938561A (en) * 1971-04-10 1976-02-17 Walter Scheffel Device for drawing off weft thread
US4031928A (en) * 1975-04-09 1977-06-28 Ruti-Te Strake B.V. Storing means for forming loop-shaped yarn lengths in a textile machine
US4134435A (en) * 1977-03-15 1979-01-16 Cornellier Joseph R Weft storage means for fluid jet loom
USRE30318E (en) * 1971-08-05 1980-07-01 Zbrojovak Vsetin, narodni podnik Method of and apparatus for preparing a weft supply in a magazine for weft insertion in shuttleless looms
US4244313A (en) * 1978-04-17 1981-01-13 Automatech Industries Inc. Automatic, in situ bobbin spool loading
US4285285A (en) * 1978-11-10 1981-08-25 Newroyd Limited Feed device and method for feeding yarn or other textile material
US4351369A (en) * 1978-12-12 1982-09-28 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fluid supply apparatus in shuttleless loom
US4407335A (en) * 1980-01-30 1983-10-04 Albert Moessinger Process and device for the insertion of a weft thread into the space between two lines of warp thread
US4921019A (en) * 1988-05-02 1990-05-01 Kabushiki Kaisha Toyota Chuo Kenkyusho Weft insertion in jet loom
US5454151A (en) * 1993-07-21 1995-10-03 Karl Mayer Textilmaschinenfabrik Gmbh Arrangement for setting the tension of a thread
US20150203999A1 (en) * 2012-07-11 2015-07-23 Lindauer Dornier Gmbh Device for the Intermediate Storage of Band-Like Weft Material for a Weaving Machine and Weaving Machine Having Such a Device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7003045A (de) * 1970-03-03 1971-09-07
US3731713A (en) * 1971-04-19 1973-05-08 J Lachapelle Water jet loom
US3736964A (en) * 1972-01-24 1973-06-05 North American Rockwell Weft storage device
FR2288803A1 (fr) * 1974-07-31 1976-05-21 Moessinger Sa Procede et dispositif de tissage avec insertion par boucle
NL7600569A (nl) * 1976-01-20 1977-07-22 Rueti Te Strake Bv Weefmachine met een pneumatisch bediende buffer- inrichting voor het inslaggaren.
FR2476154A1 (fr) * 1980-02-15 1981-08-21 Moessinger Albert Procede et dispositif pour l'insertion d'un fil de trame dans la foule d'un metier a tisser
FR2495196A1 (fr) * 1980-11-28 1982-06-04 Alsacienne Constr Meca Procede et dispositif de formation d'une reserve de fil de trame pour metiers a tisser
DE102007008150B3 (de) * 2007-02-19 2008-10-16 Ontec Elektro- Und Steuerungstechnik Gmbh Verfahren und Vorrichtung zur Fadenzwischenspeicherung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1287172A (en) * 1918-04-25 1918-12-10 Bernard R Andrews Apparatus for drying material in the form of webs.
US2379824A (en) * 1943-03-06 1945-07-03 Du Pont Process and apparatus for treating artificial filaments
US2639487A (en) * 1951-08-30 1953-05-26 Owens Corning Fiberglass Corp Air blower for linearly feeding a continuous strand
US2854059A (en) * 1954-10-07 1958-09-30 Versil Ltd Apparatus for producing bonded staple lengths of grouped filaments
US3185400A (en) * 1961-12-28 1965-05-25 Ampex Tape slack device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1287172A (en) * 1918-04-25 1918-12-10 Bernard R Andrews Apparatus for drying material in the form of webs.
US2379824A (en) * 1943-03-06 1945-07-03 Du Pont Process and apparatus for treating artificial filaments
US2639487A (en) * 1951-08-30 1953-05-26 Owens Corning Fiberglass Corp Air blower for linearly feeding a continuous strand
US2854059A (en) * 1954-10-07 1958-09-30 Versil Ltd Apparatus for producing bonded staple lengths of grouped filaments
US3185400A (en) * 1961-12-28 1965-05-25 Ampex Tape slack device

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938561A (en) * 1971-04-10 1976-02-17 Walter Scheffel Device for drawing off weft thread
USRE30318E (en) * 1971-08-05 1980-07-01 Zbrojovak Vsetin, narodni podnik Method of and apparatus for preparing a weft supply in a magazine for weft insertion in shuttleless looms
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
US3738396A (en) * 1972-03-27 1973-06-12 North American Rockwell Weft storage device
JPS4954671A (de) * 1972-05-10 1974-05-28
JPS5838544B2 (ja) * 1972-05-10 1983-08-23 リユ−テイ テ ストラ−ケ ビ− ヴイ シヨクキ
JPS4948956A (de) * 1972-06-16 1974-05-11
US3865149A (en) * 1972-06-16 1975-02-11 Rueti Ag Maschf Device for storing a thread portion
US3908707A (en) * 1972-12-22 1975-09-30 Rueti Te Strake Bv Device for the delivery of predetermined weft lengths in a shuttleless weaving machine
US3918501A (en) * 1973-06-21 1975-11-11 Du Pont Canada Feeder for tape weaving machine
US4031928A (en) * 1975-04-09 1977-06-28 Ruti-Te Strake B.V. Storing means for forming loop-shaped yarn lengths in a textile machine
US4134435A (en) * 1977-03-15 1979-01-16 Cornellier Joseph R Weft storage means for fluid jet loom
US4244313A (en) * 1978-04-17 1981-01-13 Automatech Industries Inc. Automatic, in situ bobbin spool loading
US4285285A (en) * 1978-11-10 1981-08-25 Newroyd Limited Feed device and method for feeding yarn or other textile material
US4351369A (en) * 1978-12-12 1982-09-28 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fluid supply apparatus in shuttleless loom
US4407335A (en) * 1980-01-30 1983-10-04 Albert Moessinger Process and device for the insertion of a weft thread into the space between two lines of warp thread
US4921019A (en) * 1988-05-02 1990-05-01 Kabushiki Kaisha Toyota Chuo Kenkyusho Weft insertion in jet loom
US5454151A (en) * 1993-07-21 1995-10-03 Karl Mayer Textilmaschinenfabrik Gmbh Arrangement for setting the tension of a thread
US20150203999A1 (en) * 2012-07-11 2015-07-23 Lindauer Dornier Gmbh Device for the Intermediate Storage of Band-Like Weft Material for a Weaving Machine and Weaving Machine Having Such a Device
US9328437B2 (en) * 2012-07-11 2016-05-03 Lindauer Dornier Gesellschaft Mbh Device for the intermediate storage of band-like weft material for a weaving machine and weaving machine having such a device

Also Published As

Publication number Publication date
CH477581A (de) 1969-08-31
NL6712130A (de) 1969-03-06
BE719951A (de) 1969-02-03
NL147798B (nl) 1975-11-17
GB1241988A (en) 1971-08-11
DE1774774A1 (de) 1972-01-20
FR1581247A (de) 1969-09-12
DE1774774C3 (de) 1975-06-05
JPS5221107B1 (de) 1977-06-08
DE1774774B2 (de) 1974-10-24

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