US2519786A - Loom - Google Patents

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Publication number
US2519786A
US2519786A US690021A US69002146A US2519786A US 2519786 A US2519786 A US 2519786A US 690021 A US690021 A US 690021A US 69002146 A US69002146 A US 69002146A US 2519786 A US2519786 A US 2519786A
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United States
Prior art keywords
weft thread
drum
thread
shed
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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US690021A
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English (en)
Inventor
Paabo Max
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Individual
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Individual
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Publication date
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Publication of US2519786A publication Critical patent/US2519786A/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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3006—Construction of the nozzles
    • D03D47/3013—Main nozzles
    • 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
    • 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
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins

Definitions

  • This invention relates to a loom of that type weft thread from a stationary spool, a nozzle for blowing the weft thread through the shed between the warp threads by means of a blast of compressed air, possibly mixed with a fine powder, and means for cutting the weft thread at the entrance end of the shed, a receiving funnel, opening in the direction of the shed, being arranged at the exit end of the shed, in which funnel a suitably reduced pressure is maintained.
  • the nozzle through which the weft thread is blown through the shed between the warp threads is arranged on the lay of the loom. This is very disadvantageous as during the weaving faults easily result from this arrangement.
  • FIG. 1 is a front view of a loom, showing the loom in the position it occupies the moment after the weft thread has been blown through the shed.
  • Fig. 2 is a similar view of the loom, showing its position at the moment when the reed is ap- 2 proaching the fell .to push the weft thread against the fell of the fabric.
  • Fig. 3 is a view on a larger scale showing the loom in vertical section on the line III--III, Fig. 1.
  • Fig. 4 is a similar section on the line IV--IV, Fig. 2.
  • Fig. 5 is a plan view of another embodiment of the unwinding means.
  • Fig. 6 is an end view of said means.
  • Fig. 7 is a vertical section on the line VII-VII, Fig. 6.
  • the warp threads I which are led substantially vertically through the loom, pass the reed 2 in the known manner which is held to the lay 4 of the loom by means of elastic clamps 3.
  • the lay is pivoted on a shaft 5 carried bythe stand, so that the reed during the working of the loom describes an arc-shaped path in a vertical plane.
  • At 1 and 8 are indicated two harness frames for creating the shed 9 between the warp threads I.
  • the weft thread It is unwound from a stationary spool II and is led through a friction device braking the feeding of the weft thread, which device consists of two discs l2, I3, the latter of which is axially displaceable on a bolt l4, and is pressec against the other disc I2 by means of a coil spring l5. Further the weft thread It passes through a thread guide It and is wound one or more turns and/ or a fraction of a turn on to a rotating drum I! on which a catch I8 is arranged. In,the,,.ex.--.
  • the catch I8 consists of the outer end of a double armed lever l9 pivoted at 20, the opposite arm 2
  • the drum I1 and the cam disc ZZ are both constantly rotating but the cam 22 rotates at a slower rate of speed than the drum I! so that the catch l8 will operate in the manner described.
  • the weft thread is then led through a passage 23 of a nozzle 24 which is directed with its mouth against the shed 9.
  • a passage 25 issuing into the thread passage 23 is connected to a source of supply-of compressed air (not shown), and delivers compressed air through the necessary valves (not shown) to the nozzle, needed for blowing the weft thread through the shed 9.
  • a pair of scissors 26 is arranged, the one somewhat shorter leg 21 of which is attached to a fixed part 28 of the stand, while the other leg 29 of the pair of scissors is provided with a roller or ball 30 for cooperation with a rotating cam plate 3
  • a thread guide 32 placed on the reed 2 at the entrance end of the shed 9, whereafter the cutting takes place.
  • the leg 23 returns to its initial position under the action of a coil spring 34.
  • a funnel 35 is arranged in alignment with the nozzle 24, which funnel is directed with its mouth against said nozzle and is connected to a source of vacuum (not shown). Said funnel is adapted to receive the free end of the weft thread when this end has passed through the shed.
  • the reed 2 or the lay 4 carries also a guard 36 of any suitable construction which is only diagrammatically shown in the drawing and which forms no part of the claimed invention.
  • Said guard is arranged in such a way that it is positioned in front of the receiving funnel 35 when the reed is in its initial position (Fig. 1).
  • an impulse is given in any known manner, preferably by electric means, to the motor or coupling of the loom, whereby the loom is stopped.
  • the free thread end is held in position by the receiving funnel 35 for being felt by the guard 36, shown only diagrammatically since not forming part of the claimed apparatus, for detecting absence of the weft, and which funnel also has the task to remove occurring dust particles, so that the air in the room is maintained clean.
  • the thread at the same time in the manner indicated above and shown in Fig. 4, is moved in between the cutting edges of the legs 21, 29 of the pair of scissors 26, whereafter the thread, after a new thread loop has been created by the catch l4 and the drum I1, is cut off by the legs of the scissors brought together.
  • the new thread end formed in this way together with the free thread loop is blown, after a new shed has been created by means of the shafts l, 8, by the air blast through the shed 9, whereafter the process is repeated.
  • Figs. 5-7 are shown another means for controlling the movements of the lever I9. 2
  • the pivot shaft 20 of the lever I9 is mounted in an arm or disc 38 extending radially from the hub 31 of the drum H, which arm is provided with a recess II for enabling the lever to swing.
  • , are provided with an axial passage.
  • a displaceabie pin 42 is introduced in the part of said passage which is situated in the hub 31. One end of said pin rests against the lever 2
  • rotatable about a shaft II and resting against a disc 53 driven by a shaft 52, which disc along a part of the arc-shaped path described by the roller II on said disc is provided with a slot 54 into which the roller 5
  • the spring 43 will swing the lever
  • the disc 53 therefore should rotate with such a velocity in relation to the drum that a suitable length of the thread I! is wound onto the drum, e. g. in one or more turns.
  • a roller 51 of rubber or any other elastic material is arranged engaging the periphery of the drum H and pivoted about a shaft 53, which roller presses the thread I0 into engagement with the drum I I before it is wound onto the latter.
  • 3 used in the form according to Figs. 1-4 may be dispensed with.
  • the advantage is obtained that a constant length of the thread I0 is always wound onto the drum ll. This causes in its turn that a constant length of thread is always fed from the nozzle 24 for which reason the thread losses at the exit end of the shed will be reduced.
  • a sleeve 58 open at both ends is arranged round the drum Said sleeve 53 which preferably should lie as close as possible to the drum I1 and should have a smooth interior surface has the task to prevent that the thread wound onto the drum at high rotation velocities of the drum is thrown outwards by the centrifugal force in the short period of time that passes between the moment when the catch it has been drawn inside the drum, and the moment when the thread is thrown out through the nozzle 24.
  • the sleeve 58 surrounding the drum H has a slot 58 through which the part of the thread l0 positioned between the roller 51 and the catch I4 is guided.
  • Said slot 59 may preferably extend obliquely to the shaft 40 of the drum l1 substantially in the direction of winding of the thread whereby if several turns of the thread are wound onto the drum it will never lie double.
  • the obliquely arranged slot 59 will space the thread turns from each other upon winding onto the drum as will be seen in Fig. 5.
  • the pair of scissors 26 may be replaced by another suitable cutting device for cutting the weft thread.
  • the loom may be provided in any known manner with a device for twisting the uttermost warp threads, so that the ends of the weft threads are better held in position and relatively strong selvage edges are obtained.
  • a fine powder may be introduced in the air blast whereby the blast is better formed and effects a greater guiding force on the weft thread, when it is blown through the shed.
  • a pneumatic loom having a substantially vertically reciprocating lay
  • the combination comprising a frame, means mounted on said frame for delivering a weft thread from a supply thereof, stationary jet means for blowing said weft thread through the warp shed with compressed air and means for cutting said weft thread at the entrance of said shed.
  • a pneumatic loom having a substantially vertically reciprocating lay
  • the combination comprising a frame, means mounted on said frame for delivering a weftthread from a supply thereof, stationary jet means for blowing said weft thread through the warp shed with compressed air, means for cutting the weft thread at the entrance of said shed, and suction means provided at the frame and at the exit of said shed to catch the weft thread after passing through said shed.
  • a pneumatic loom having a substantially vertically reciprocating lay
  • the combination comprising a frame, means mounted on said frame for delivering a weft thread from a supply thereof, comprising a rotatable drum and a catch projecting through the periphery of said drum for winding the weft thread on to said drum in one or more revolutions or part of a revolution and arranged to be retracted within the said periphery for releasing the loop of weft thread wound on said drum, stationary jet means for blowing said weft thread after being released by said catch through the warp shed by compressed air, and means for cutting the weft thread at the entrance of said shed.
  • a pneumatic loom having a substantially vertically reciprocating lay
  • the combination comprising a frame, means mounted on said frame for delivering a weft thread from a supply thereof, stationary jet means for blowing said weft thread through the warp shed with compressed air, scissor means for cutting the weft thread at the entrance of said shed, guide means for said weft thread associated with the lay of the loom and provided at the entrance of said shed for moving the weft thread in between the legs of said scissor means when said thread is pushed against the already woven portion of the weaving by the lay, and cam means for closing the legs of said scissor means when the weft thread has been thus placed therebetween to out said thread.
  • a pneumatic loom having a substantially vertically reciprocating lay
  • the combination comprising a frame, means mounted on said frame for delivering a weft thread from a supply thereof, comprising a rotatable drum and a catch projecting through the periphery of said drum for winding the weft thread on to said drum in one or more revolutions or part of a revolution and arranged to be retracted within the said periphery for releasing the loop of weft thread wound on said drum, and a rotatable roller of resilient material engaging said drum for pressing the part of the weft thread ahead.
  • stationary jet means for blowing said weft thread through the warp shed by compressed air, and means for cutting the weft thread at the entrance of the shed.
  • a pneumatic loom having a substantially vertically reciprocating lay
  • the combination comprising a frame, means mounted on said frame for delivering a weft thread from a supply thereof, comprising a rotatable drum and a catch projecting through the periphery of said drum for winding the weft thread on to said drum in one or more revolutions or part of a revolution and arranged to be retracted within said periphery for releasing the loop of weft thread wound on said drum, and a stationary sleeve arranged around said drum for preventing the weft thread, after being released from said catch, from being thrown radially outwards from said drum by centrifugal force, stationary jet means for blowing said weft thread through the warp shed by compressed air, and means for cutting the weft thread at the entrance of the shed.
  • a pneumatic loom having a substantially vertically reciprocating lay
  • the combination comprising a frame, means mounted on said frame for delivering a weft thread from a supply thereof comprising a rotatable drum and a catch projecting through the periphery of said drum for winding the weft thread on to said drum in one or more revolutions or part of a revolution and arranged to be retracted within the said periphery for releasing the loop of weft thread wound on said drum, pressure means for pressing the part of the weft thread ahead of said REFERENCES CITED

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US690021A 1945-08-11 1946-08-12 Loom Expired - Lifetime US2519786A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE253930X 1945-08-11

Publications (1)

Publication Number Publication Date
US2519786A true US2519786A (en) 1950-08-22

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ID=20306256

Family Applications (1)

Application Number Title Priority Date Filing Date
US690021A Expired - Lifetime US2519786A (en) 1945-08-11 1946-08-12 Loom

Country Status (7)

Country Link
US (1) US2519786A (en, 2012)
BE (1) BE467199A (en, 2012)
CH (1) CH253930A (en, 2012)
DE (1) DE865729C (en, 2012)
FR (1) FR932085A (en, 2012)
GB (1) GB616323A (en, 2012)
NL (1) NL70272C (en, 2012)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637349A (en) * 1948-12-24 1953-05-05 George W Dunham Shuttleless loom which pneumatically projects weft thread
US2662556A (en) * 1949-04-02 1953-12-15 Ceskoslovenske Textilni Zd Y Device for weaving of fabrics
US2668560A (en) * 1949-04-02 1954-02-09 Ceskoslovenske Textilni Zd Y Device for weaving of fabrics
US2799295A (en) * 1953-01-08 1957-07-16 Juillard Yves Weaving device
US2925833A (en) * 1957-06-15 1960-02-23 Strake Lambertus Te Weft inserting nozzle for looms
US3134248A (en) * 1961-05-01 1964-05-26 Sdruzeni Podniku Textilniho St Pneumatic device for inserting weft threads in warp loops of warp knitted fabric
US3147778A (en) * 1960-05-30 1964-09-08 Reyes Juan Vila Device for cutting the filling in shuttleless looms with stationary filling reserve
US3370618A (en) * 1964-11-21 1968-02-27 Elitex Zavody Textilniho Thread dispensing apparatus
US3517704A (en) * 1963-09-12 1970-06-30 Saurer Ag Adolph Weft inserting device
US3737112A (en) * 1971-04-23 1973-06-05 Wesco Industries Corp Yarn feeding and storage device for textile producing machine
US3761031A (en) * 1970-05-14 1973-09-25 Sulzer Ag Storage apparatus for filamentary material
US3776282A (en) * 1972-07-10 1973-12-04 Vyzk Vyvojovy Ustav Vseobe Method of and apparatus for metering and storing weft yarn for intermittent insertion into the shed of shuttleless looms
US3982568A (en) * 1974-04-12 1976-09-28 Zbrojovka Vsetin, Narodni Podnik Device for gripping and forming a supply of weft thread before weft insertion
US4378821A (en) * 1980-06-27 1983-04-05 Nissan Motor Co., Ltd. Weft detaining device of shuttleless loom
US4473096A (en) * 1979-08-06 1984-09-25 Leesona Corporation Weft end reception system
US4601314A (en) * 1984-01-19 1986-07-22 Sulzer-Ruti Machinery Work, Ltd Method and apparatus for operating a weaving machine

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1012568B (de) * 1952-07-22 1957-07-18 Trikotfabriken J Schiesser A G Webmaschine
DE1063537B (de) * 1953-10-01 1959-08-13 Mira Zd Y Na Pletene A Stavkov Vorrichtung zum periodischen Abwickeln und Abmessen gleicher Laengen des Schussfadens fuer Webmaschinen mit Entnahme des Schussfadens von feststehenden Spulen
DE1189026B (de) * 1955-02-07 1965-03-11 Cuckson Textiles Proprietary L Verfahren zum Weben eines Bandes auf einer Webmaschine und Vorrichtung zum Durchfuehren dieses Verfahrens
DE1089696B (de) * 1956-10-13 1960-09-22 Sulzer Ag Vorrichtung zum Abziehen des Fadens von Schussfadenspulen bei Greiferwebmaschinen
US3124167A (en) * 1959-01-19 1964-03-10 Pneumatic weft inserting means
DE1170879B (de) * 1959-05-25 1964-05-21 Walter Scheffel Luftzufuehrungsvorrichtung an Webmaschinen mit pneumatischer Schusseintragung
DE1258809B (de) * 1959-12-04 1968-01-11 Sulzer Ag Vorrichtung zum Abwickeln des Schussfadens bei Webmaschinen mit waehrend des Schusseintrages ausserhalb des Faches verbleibender Schussfaden-Vorratsspule
DE1262847B (de) * 1961-10-31 1968-03-07 Sobrevin Soc De Brevets Ind Et Laengenmessvorrichtung fuer laufende Faeden
DE1272245B (de) * 1961-11-02 1968-07-04 Walter Scheffel Vorrichtung an Webmaschinen zum Weben breiter Gewebe mit durch eine Duese erfolgender pneumatischer Schusseintragung
CH404575A (de) * 1963-09-12 1965-12-15 Saurer Ag Adolph Dosiervorrichtung an Webmaschine
US3280853A (en) * 1964-03-18 1966-10-25 Draper Corp Filling furnishing mechanism
CH445404A (de) * 1965-10-06 1967-10-15 Sulzer Ag Greiferschützenwebmaschine mit Schussfadenspeichervorrichtung
SE314157B (en, 2012) * 1967-10-20 1969-09-01 K Rosen
BE1000989A3 (nl) * 1987-10-09 1989-05-30 Picanol Nv Inrichting voor het strekken van een inslagdraad bij weefmachines.
FR2631351B1 (fr) * 1988-05-10 1991-02-15 Saurer Diederichs Sa Aspirateur de trame pour machine a tisser sans navette, a insertion de trame pneumatique
EP0342135A1 (fr) * 1988-05-10 1989-11-15 S.A. Saurer Diederichs Dispositif d'aspiration et de retenue du fil de trame, pour machine à tisser avec insertion de trame pneumatique

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US445395A (en) * 1891-01-27 cranston
US659951A (en) * 1899-11-03 1900-10-16 William H Baker Loom.
US1096283A (en) * 1911-05-24 1914-05-12 John C Brooks Loom.
US1368691A (en) * 1920-05-13 1921-02-15 John C Brooks Loom
US1386550A (en) * 1919-04-23 1921-08-02 John C Brooks Loom
US1721940A (en) * 1928-06-28 1929-07-23 Lorraine Mfg Company Pneumatic weft-introducing mechanism for looms
US1921396A (en) * 1930-05-09 1933-08-08 Celanese Corp Loom having alpha stationary weft supply

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US445395A (en) * 1891-01-27 cranston
US659951A (en) * 1899-11-03 1900-10-16 William H Baker Loom.
US1096283A (en) * 1911-05-24 1914-05-12 John C Brooks Loom.
US1386550A (en) * 1919-04-23 1921-08-02 John C Brooks Loom
US1368691A (en) * 1920-05-13 1921-02-15 John C Brooks Loom
US1721940A (en) * 1928-06-28 1929-07-23 Lorraine Mfg Company Pneumatic weft-introducing mechanism for looms
US1921396A (en) * 1930-05-09 1933-08-08 Celanese Corp Loom having alpha stationary weft supply

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637349A (en) * 1948-12-24 1953-05-05 George W Dunham Shuttleless loom which pneumatically projects weft thread
US2662556A (en) * 1949-04-02 1953-12-15 Ceskoslovenske Textilni Zd Y Device for weaving of fabrics
US2668560A (en) * 1949-04-02 1954-02-09 Ceskoslovenske Textilni Zd Y Device for weaving of fabrics
US2799295A (en) * 1953-01-08 1957-07-16 Juillard Yves Weaving device
US2925833A (en) * 1957-06-15 1960-02-23 Strake Lambertus Te Weft inserting nozzle for looms
US3147778A (en) * 1960-05-30 1964-09-08 Reyes Juan Vila Device for cutting the filling in shuttleless looms with stationary filling reserve
US3134248A (en) * 1961-05-01 1964-05-26 Sdruzeni Podniku Textilniho St Pneumatic device for inserting weft threads in warp loops of warp knitted fabric
US3517704A (en) * 1963-09-12 1970-06-30 Saurer Ag Adolph Weft inserting device
US3370618A (en) * 1964-11-21 1968-02-27 Elitex Zavody Textilniho Thread dispensing apparatus
US3761031A (en) * 1970-05-14 1973-09-25 Sulzer Ag Storage apparatus for filamentary material
US3737112A (en) * 1971-04-23 1973-06-05 Wesco Industries Corp Yarn feeding and storage device for textile producing machine
US3776282A (en) * 1972-07-10 1973-12-04 Vyzk Vyvojovy Ustav Vseobe Method of and apparatus for metering and storing weft yarn for intermittent insertion into the shed of shuttleless looms
US3982568A (en) * 1974-04-12 1976-09-28 Zbrojovka Vsetin, Narodni Podnik Device for gripping and forming a supply of weft thread before weft insertion
US4473096A (en) * 1979-08-06 1984-09-25 Leesona Corporation Weft end reception system
US4378821A (en) * 1980-06-27 1983-04-05 Nissan Motor Co., Ltd. Weft detaining device of shuttleless loom
US4601314A (en) * 1984-01-19 1986-07-22 Sulzer-Ruti Machinery Work, Ltd Method and apparatus for operating a weaving machine

Also Published As

Publication number Publication date
NL70272C (en, 2012) 1900-01-01
BE467199A (en, 2012)
FR932085A (fr) 1948-03-11
GB616323A (en) 1949-01-19
CH253930A (de) 1948-04-15
DE865729C (de) 1953-02-05

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