US3675687A - Mechanism for preparing and presenting single thread lengths to a weft device of a weaving loom - Google Patents

Mechanism for preparing and presenting single thread lengths to a weft device of a weaving loom Download PDF

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Publication number
US3675687A
US3675687A US118043A US3675687DA US3675687A US 3675687 A US3675687 A US 3675687A US 118043 A US118043 A US 118043A US 3675687D A US3675687D A US 3675687DA US 3675687 A US3675687 A US 3675687A
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US
United States
Prior art keywords
thread
nozzle
loop
clamp
weaving
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Expired - Lifetime
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US118043A
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English (en)
Inventor
Geert Jan Vermeulen
Antonius Martinus Barten
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 STRAKE NV
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MAS FAB L STRAKE NV
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Publication date
Application filed by MAS FAB L STRAKE NV filed Critical MAS FAB L STRAKE NV
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Publication of US3675687A publication Critical patent/US3675687A/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
    • 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 invention aims at providing a simplified mechanism for preparing and presenting measured single thread lengths to a weft device of a weaving loom, said mechanism being particularly suitable to be applied in weaving looms adapted for weaving with a false selvage such as occurs when weaving with various kinds of synthetic yarns.
  • the invention aims at providing a pneumatic thread preparing and presenting mechanism which is suitable for handling low twisted yarns in that the thread in its path from the storage cone to the weaving shed is exposed to relatively low tensions, as compared with the known mechanisms, and in general is spared in greater measure.
  • the mechanism proposed by the invention is characterized by a first auxiliary nozzle which follows a thread feeding device, said nozzle having its exit opening directed to a first storing shaft for permitting a first thread loop to be received in said storing shaft, the leading run of said loop extending via a first thread clamp through a second auxiliary nozzle, the exit opening thereof being situated opposite to a second storing shaft for the reception into the said shaft of a second thread loop, the leading run of which extends to the main nozzle of the weft device, a second thread clamp as well as a cutting device being provided adjacent to the main nozzle.
  • the thread clamps as well as the cutting device are controlled so that during the one half of a weaving cycle the first thread clamp is closed, the second thread clamp is open and the cutting device is inoperative a thread loop previously formed in the second storing shaft being inserted into the weaving shed by the main nozzle and a new" thread loop being at the same time inserted into the first storing shaft by the first auxiliary nozzle whereas in the other half of the same weaving cycle the first thread clamp is opened and the second thread clamp is closed, the thread loop formed during the previous half cycle in the first storing shaft being transmitted by the second auxiliary nozzle to the second storing shaft, whereas the cutting device is actuated at the transition from the first to the second half of the weaving cycle for cutting off the thread length inserted into the weaving shed by the main nozzle.
  • the nozzles are controlled so that the first auxiliary nozzle is actuated continuously, the second auxiliary nozzle only during the second half of the weaving cycle and the main nozzle only during the first half of the weaving cycle.
  • FIG. 1 is a diagrammatic view in perspective of a mechanism embodying the invention
  • FIG. 2 is a fragmentary elevation of a conventional device for controlling the supply of air to a nozzle.
  • FIG. 3 is a fragmentary elevation of a conventional device for operating a thread clamp.
  • FIG. 4 is a fragmentary elevation of a conventional thread cutting device.
  • the weft thread 1 is drawn directly from a storage cone 2 and supplied via a pneumatically operating supply and breaking device 3, controlling the tension of the thread, to a set of measuring rolls 4a, 4b.
  • the pneumatic supply and breaking device 3 is for instance constructed as described in the Dutch patent application 66l0l74, laid open for public inspection. From the measuring rolls 4a, 4b, the larger one 40 of which may be driven at a speed that is adjustable in correspondence with the width of the cloth to be woven, the thread is taken by a first auxiliary noule S of a known type which permits the thread to be received in the shape of a loop 6 into the storing shaft 7.
  • the end 7' of the shaft 7 may also be connected to a suction device.
  • the thread further moves via a first thread clamp 8 through a second auxiliary noule 9, which last mentioned auxiliary nozzle may likewise be of a known type and is adapted to permit, by means of a transporting air jet produced by it, the reception of a second loop 10 of the thread into the storing shalt II.
  • the end 11' of the shaft ll may be connected to a suction device which may be intermittently actuated.
  • the leading run of the loop 10 moves via a guide 12 to the main noule l3 which has its exit opening situated before the weaving shed and is adapted to insert intermittently, that is at each revolution of the main shaft of the weaving machine, a length of the thread 1 into the weaving shed, said length being measured corresponding to the desired cloth width.
  • the thread leaving the main nozzle 13 passes a second thread clamp 14 and a cutting device 15.
  • the last mentioned device may be of any desired type, and may consist of a movable part 15' and a stationary part 17. Particularly when handling synthetic threads a cutting device may be used which operates by burning or melting the thread by means of heat.
  • the storing shafts 11 and 7 are axially aligned and at the transition between such shafts a screen 16 has been placed in order that the opposite air streams prevailing in the shafts may not influence each other.
  • the drawing shows the mechanism in a phase in which the main noule 13 is about to insert the loop 10 (formed in the storing shaft 11) into the weaving shed via the thread clamp 14 (open at this moment), and via the inoperative cutting device 15.
  • the thread clamp 8 is in closed position at this moment whereas the auxiliary nozzle 9 is not actuated.
  • the thread clamp 14 is closed, controlled by a shaft 18 driven from the main shaft of the weaving machine, and the cutting device 15, which maybe similarly controlled by the shaft 18, is actuated to separate the weft thread length from the rest of the thread and to permit the beating up of said length into the cloth 19 during the second half of the weaving cycle by means of the reed 20.
  • auxiliary nozzle 9 is actuated by the opening of an air supply valve 21 controlled by the shaft 18, and the thread clamp 8, which is controlled like the clamp 14, is opened in order to transmit the loop 6 (formed during the launching that has just ended, by means of the continuously blowing" auxiliary nozzle 5, in the storing shaft 7) into the storing shaft 1 1.
  • the thread clamp 8 is again closed and the actuation of the auxiliary nozzle 9 is ended in order that the thread length formed in the shafi 11 may be inserted, with the thread clamp 14 opened, into the weaving shed by means of the main nozzle 13.
  • a wei't drawing device for presenting measured thread lengths to a weaving machine, comprising a continuously activated first auxiliary nozzle, mechanism for feeding a thread continuously to such nozzle, a first storage shalt arranged to receive a first loop of the thread discharged by such nozzle, a second auxiliary nozzle arranged to withdraw the leading run of such loop of thread from the first storage shalt, a first thread clamp located adjacent to the second auxiliary nozzle, a second storage shaft arranged to receive a second loop of the thread discharged by the second auxiliary nozzle, a main weftinserting blowing nozzle arranged to withdraw the leading run of the second loop of thread from the second storage shaft, and a second thread clamp and a cutting device through which clamp may be closed while the second auxiliary nozzle is active and the main blowing nozzle is inactive.
  • a weft drawing device according to claim 1 wherein the first and second storage shafts are so arranged that the leading run of the loop in the first storage shafi is in alignment with the trailing run of the loop in the second storage shaft.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US118043A 1970-03-03 1971-02-23 Mechanism for preparing and presenting single thread lengths to a weft device of a weaving loom Expired - Lifetime US3675687A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7003045A NL7003045A (pt) 1970-03-03 1970-03-03

Publications (1)

Publication Number Publication Date
US3675687A true US3675687A (en) 1972-07-11

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ID=19809483

Family Applications (1)

Application Number Title Priority Date Filing Date
US118043A Expired - Lifetime US3675687A (en) 1970-03-03 1971-02-23 Mechanism for preparing and presenting single thread lengths to a weft device of a weaving loom

Country Status (10)

Country Link
US (1) US3675687A (pt)
JP (1) JPS516785B1 (pt)
AU (1) AU2591571A (pt)
BE (1) BE763255A (pt)
CA (1) CA931473A (pt)
CH (1) CH525984A (pt)
DE (1) DE2109476B2 (pt)
FR (1) FR2081647B1 (pt)
GB (1) GB1350934A (pt)
NL (1) NL7003045A (pt)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853153A (en) * 1972-06-30 1974-12-10 Rueti Te Strake Bv Device for intermittently supplying measured weft yarn lengths to the weft inserting device of a shuttleless 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
DE3200638A1 (de) * 1981-01-13 1982-08-12 Rueti Te Strake Bv Schuetzenlose webmaschine
US4410018A (en) * 1980-09-09 1983-10-18 Sulzer Brothers Limited Nozzle structure for a weaving machine
US4509563A (en) * 1981-03-02 1985-04-09 Mecaniques De Mulhouse Societe Alsacienne De Constructions Device for the insertion of a weft thread into the shed between two lines of warp thread in a weaving loom
US4947898A (en) * 1987-11-05 1990-08-14 Picanol N.V. Weft thread supply via two accumulators
US20080156390A1 (en) * 2004-07-30 2008-07-03 Lindauer Dornier Gesellschaft Mbh Jet-Weaving Machine, Particularly an Air Jet-Weaving Machine, with a Clamping Device in the Mixing Tube
US20090288732A1 (en) * 2006-06-02 2009-11-26 Lindauer Dornier Gessellschaft Mbh Method for clamping a weft thread in a jet weaving machine, in particular air-jet weaving machine, clamping device and jet weaving machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2365037C2 (de) * 1973-12-28 1984-08-02 Rüti-te Strake B.V., Deurne Vorrichtung zur Vorbereitung vorherbestimmter Schußfadenlängen in einer schützenlosen Webmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6616526A (pt) * 1966-11-23 1968-05-24
CH461401A (de) * 1967-01-18 1968-08-15 Machf L Te Strake Ag Nv Vorrichtung zum zeitlichen Aufbewahren einer Fadenlänge, insbesondere für Webmaschinen
CH477581A (de) * 1967-09-04 1969-08-31 Strake Maschf Nv Vorrichtung zum Lokalisieren eines Übermasses einer Fadenlänge

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1261463A (fr) * 1959-05-25 1961-05-19 Métier à tisser à insertion pneumatique de la trame
NL6807613A (pt) * 1968-05-29 1969-12-02

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6616526A (pt) * 1966-11-23 1968-05-24
CH461401A (de) * 1967-01-18 1968-08-15 Machf L Te Strake Ag Nv Vorrichtung zum zeitlichen Aufbewahren einer Fadenlänge, insbesondere für Webmaschinen
CH477581A (de) * 1967-09-04 1969-08-31 Strake Maschf Nv Vorrichtung zum Lokalisieren eines Übermasses einer Fadenlänge

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853153A (en) * 1972-06-30 1974-12-10 Rueti Te Strake Bv Device for intermittently supplying measured weft yarn lengths to the weft inserting device of a shuttleless 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
US4410018A (en) * 1980-09-09 1983-10-18 Sulzer Brothers Limited Nozzle structure for a weaving machine
DE3200638A1 (de) * 1981-01-13 1982-08-12 Rueti Te Strake Bv Schuetzenlose webmaschine
US4476903A (en) * 1981-01-13 1984-10-16 Ruti-Te Strake B.V. Shuttleless weaving machine
US4509563A (en) * 1981-03-02 1985-04-09 Mecaniques De Mulhouse Societe Alsacienne De Constructions Device for the insertion of a weft thread into the shed between two lines of warp thread in a weaving loom
US4947898A (en) * 1987-11-05 1990-08-14 Picanol N.V. Weft thread supply via two accumulators
US20080156390A1 (en) * 2004-07-30 2008-07-03 Lindauer Dornier Gesellschaft Mbh Jet-Weaving Machine, Particularly an Air Jet-Weaving Machine, with a Clamping Device in the Mixing Tube
US7537029B2 (en) * 2004-07-30 2009-05-26 Lindauer Dornier Gesellschaft Mbh Jet-weaving machine, particularly an air jet-weaving machine, with a clamping device in the mixing tube
US20090288732A1 (en) * 2006-06-02 2009-11-26 Lindauer Dornier Gessellschaft Mbh Method for clamping a weft thread in a jet weaving machine, in particular air-jet weaving machine, clamping device and jet weaving machine
US7753084B2 (en) 2006-06-02 2010-07-13 Lindauer Dornier Gesellschaft Mbh Method for clamping a weft thread in a jet weaving machine, in particular air-jet weaving machine, clamping device and jet weaving machine

Also Published As

Publication number Publication date
BE763255A (fr) 1971-07-16
FR2081647A1 (pt) 1971-12-10
GB1350934A (en) 1974-04-24
CA931473A (en) 1973-08-07
CH525984A (de) 1972-07-31
DE2109476B2 (de) 1974-02-07
JPS516785B1 (pt) 1976-03-02
DE2109476A1 (de) 1971-10-21
AU2591571A (en) 1972-08-31
FR2081647B1 (pt) 1975-06-06
NL7003045A (pt) 1971-09-07
DE2109476C3 (pt) 1974-08-29

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