US3124167A - Pneumatic weft inserting means - Google Patents

Pneumatic weft inserting means Download PDF

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Publication number
US3124167A
US3124167A US3124167DA US3124167A US 3124167 A US3124167 A US 3124167A US 3124167D A US3124167D A US 3124167DA US 3124167 A US3124167 A US 3124167A
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Prior art keywords
thread
shed
weft
blowing
nozzle
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Expired - Lifetime
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English (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

Definitions

  • the invention relates to a device for transporting one or more threads by means of air.
  • the invention also relates to a weaving loom provided with such a device, for blowing the weft-thread into the shed.
  • the present invention provides for the conveyance of a thread by means of air over an unlimited distance. This is attained according to the invention by a plurality of spaced blowing devices operating in the direction of transport, each being provided with a catching device for the thread in order to bring the arriving thread from a preceding blowing device into the path of the air discharged from the nozzle of a succeeding blowing device.
  • the catching device for the thread preferably utilizes air suction.
  • One embodiment of the device for transporting one or more threads comprises an injector tube secured to a jet nipple.
  • the jet nipple is connected to a pressure line.
  • the injector tube is provided with an opening, positioned behind the tip of the jet nozzle, which acts as a suction opening.
  • a weaving loom according to the invention is characterized in that in the direction of the weft over the width of the cloth, or over the width of the path of the warpthreads, a series of blowing devices are provided which may be periodically inserted in the shed of the warpthreads.
  • blowing devices are arranged above or below the path of the warp-threads and, when the shed is opened, can be inserted into the shed through the lower or upper lease between the warp-threads.
  • the blowing devices are advantageously mounted on bellcranl; levers which can be so controlled that these levers send the blowing devices into and out of the shed in order to allow the reed to pass during the beat-up stroke and to allow the shafts to change the shed.
  • FIG. 1 is a diagrammatic side view of a thread-conveying device according to the invention.
  • FIG. 2 is a diagrammatic plan View of FIG. 1;
  • FIG. 3 is a front view of a reed of a weaving loom, provided with a thread-conveying device according to the invention.
  • FIG. 4 is a front view of a part of the reed, a blowing nozzle being mounted on a bell-crank lever.
  • the invention comprises a series of blowing devices A, B and C.
  • Each device consists of an air nozzle 1 and an injector tube 2.
  • the nozzles blow air from the device A to the device B and from device B to the device C.
  • the air jets therefore are practically aligned.
  • a thread 3 is blown through the device A to the device B and hence to the device C and further.
  • the injector tube of the blowing device possesses a suction opening 4 near the jet nozzle 1 for drawing in a thread by means of the secondary air, which is drawn into the injector tube by the primary air discharging from the jet nozzle, as explained hereinbefore.
  • the initial position of the thread is shown in FIG. 1 by a dotted line between the blowing devices A and B. However, it is not necessary to so accurately align the nozzle A that the beginning of the thread 3 arrives just before the opening 3. The thread 3 need only arrive in the proximity of the opening or can even pass the opening 4, as shown by a dash-d0t line between the blowing devices B and C.
  • the thread 3 should pass the opening 4, the thread would be drawn by the suction action and take the normal course when further blowing the thread, as shown with a full line.
  • the speed of conveyance of the thread can be materially increased if the opening 4 merges into a slit 5 in the wall of the injector tube 2.
  • the blowing devices A, B and C can be removed from the shed after their conveying action while leaving the thread 3 in the shed. That is, if the thread 3 enters opening 4 and proceeds through injector tube 2, when the blowing device is removed from the shed the thread 3 slips out of tube 2 through slit 5. If the thread 3 does not enter opening 4 it is still conveyed forwardly through the shed by the cushioning action of the air blowing from nozzle 1 and out through tube 2 as shown over blowing devices B and C and described in the preceding paragraph.
  • FIG. 3 Such a conveying device can readily be applied to a loom, as will be described with reference to FIG. 3.
  • FIG. 6 represents the reed and 7 and 7a represent blowing nozzles. Adjacent to the reed 6 are blowing nozzles 55 connected by means of hell crank levers 9, so as to form a conveying device, as shown in FIGS. 1 and 2.
  • the bell crank levers 9 together with the nozzles 8 can be brought pivoted out of the path of the reed 6.
  • the nozzles serve for transporting a thread supplied to the nozzle '7.
  • Adjacent the reed 6 are also nozzles 10 together with their bellcrank levers 11, which can be pivoted into the path of th reed, if the thread is being supplied through the nozzle 7a. If the thread arrives from the nozzle 7a, the nozzles 8 are removed from the path of the reed.
  • the nozzles 8 can also be mounted on a separate support independent of the reed with the same effect.
  • a housing 13 is fixed to the lower beam 12, in which an opening 14 is provided communicating with a pressure line 15.
  • a hollow shaft 16 is pivotably supported.
  • the bell-crank lever 9 in the shape of a tube is connected to shaft 16.
  • the tube or bell-crank lever 9 terminates in the air nozzle 1 to which the injector tube 2 is connected.
  • the tube 9 terminates in the hollow space of the shaft 16 which is connected by an opening 17 to the opening 14 when the blowing device occupies the active position shown in full lines in FIG. 4.
  • the blowing device can be moved out of the path of the warp threads, e.g. into a non-active position shown by the dotted line.
  • a cam 18 instead of a cam 18, of course, also a tooth rack or other actuating device can be used in order to bring the blowing device out of the shed at the correct moment.
  • the lower warp-threads 19 and the upper warp threads 20 of the shed are shown.
  • blowing device can be used above as well as below the warp threads. If they are applied above the path of the warp threads, they will enter the shed between the warp threads 2t).
  • a stay 21 or" the reed is advantageously made as a tube and connected to a suction device.
  • Weft inserting apparatus for a weaving loom comprising means for introducing a weft thread into an open shed by jet action of air under pressure; at least one Weft conveying nozzle adapted to be inserted by bell-crank lever means into said open shed between warp threads intermediate the warp width of said shed; said weft conveying nozzle being adapted to receive and convey further through said opening shed a thread from said weft introducing means.
  • Weft inserting apparatus for a weaving loom comprising means for introducing a weft thread into an open shed by jet action of air under pressure; at least one weft conveying nozzle adapted to be inserted into said open shed between warp threads intermediate the warp width of said shed; said weft conveying nozzle comprising a jet nipple and an injector tube extending beyond the tip of said jet nipple; said injector tube having an opening for secondary air to be entrained by a high speed jet emerging from the jet nipple, an open end from which the jet may emerge, and a slit formed in said tube connecting said open end and said secondary air opening; said nipple directing a stream of air substantially parallel to the direction of travel of said weft thread; said weft conveying nozzle being adapted to convey further through said open shed by said parallel stream of air a thread from said weft introducing means and to be removed from said shed after conveying leaving said thread in said shed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US3124167D 1959-01-19 Pneumatic weft inserting means Expired - Lifetime US3124167A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL235246 1959-01-19

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US3124167A true US3124167A (en) 1964-03-10

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ID=19751526

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US3124167D Expired - Lifetime US3124167A (en) 1959-01-19 Pneumatic weft inserting means

Country Status (7)

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US (1) US3124167A (ja)
BE (1) BE585604A (ja)
CH (1) CH380047A (ja)
DE (1) DE1269963B (ja)
FR (1) FR1245890A (ja)
GB (1) GB918927A (ja)
NL (2) NL96129C (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978896A (en) * 1974-05-21 1976-09-07 Larmit Adrianus Johannes Franc Weft thread inserting nozzle
US4133353A (en) * 1976-09-17 1979-01-09 Ruti-Te Strake B. V. Pneumatic weaving machine and weft inserting device for such a machine
JPS5584436A (en) * 1978-12-15 1980-06-25 Nissan Motor Weft inserting apparatus of air jet type loom
US4384597A (en) * 1980-02-18 1983-05-24 Tsudakoma Kogyo Kabushiki Kaisha Method for supplemental fluid ejection on a shuttleless loom and an auxiliary nozzle used therefor
USRE32916E (en) * 1969-10-22 1989-05-02 Method for transporting a weft thread through a weaving shed and a loom for performing said method
WO1999034047A2 (en) * 1997-12-23 1999-07-08 Výzkumný Ústav Textiních Strojů Liberec A.S. Pneumatic weaving machine with a control mechanism for auxiliary nozzles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170879B (de) * 1959-05-25 1964-05-21 Walter Scheffel Luftzufuehrungsvorrichtung an Webmaschinen mit pneumatischer Schusseintragung
CS188398B1 (en) * 1975-10-01 1979-03-30 Vladimir Kuda Rotary multivalve distributor of pressurized media

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1721940A (en) * 1928-06-28 1929-07-23 Lorraine Mfg Company Pneumatic weft-introducing mechanism for looms
US2854059A (en) * 1954-10-07 1958-09-30 Versil Ltd Apparatus for producing bonded staple lengths of grouped filaments
FR1196635A (fr) * 1958-05-09 1959-11-25 Dispositif de guidage du fil de trame dans les métiers à tisser et métiers pourvus dudit dispositif

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE12256C (de) * O. MEYER in Berlin C, Seydelstrafse 13 Aufsenthürschlofs
BE467199A (ja) * 1945-08-11
NL218154A (ja) * 1957-06-15

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1721940A (en) * 1928-06-28 1929-07-23 Lorraine Mfg Company Pneumatic weft-introducing mechanism for looms
US2854059A (en) * 1954-10-07 1958-09-30 Versil Ltd Apparatus for producing bonded staple lengths of grouped filaments
FR1196635A (fr) * 1958-05-09 1959-11-25 Dispositif de guidage du fil de trame dans les métiers à tisser et métiers pourvus dudit dispositif
GB860970A (en) * 1958-05-09 1961-02-15 Svaty Vladimir A device for guiding the weft through the shed in shuttleless weaving looms

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE32916E (en) * 1969-10-22 1989-05-02 Method for transporting a weft thread through a weaving shed and a loom for performing said method
US3978896A (en) * 1974-05-21 1976-09-07 Larmit Adrianus Johannes Franc Weft thread inserting nozzle
US4133353A (en) * 1976-09-17 1979-01-09 Ruti-Te Strake B. V. Pneumatic weaving machine and weft inserting device for such a machine
JPS5584436A (en) * 1978-12-15 1980-06-25 Nissan Motor Weft inserting apparatus of air jet type loom
US4384597A (en) * 1980-02-18 1983-05-24 Tsudakoma Kogyo Kabushiki Kaisha Method for supplemental fluid ejection on a shuttleless loom and an auxiliary nozzle used therefor
WO1999034047A2 (en) * 1997-12-23 1999-07-08 Výzkumný Ústav Textiních Strojů Liberec A.S. Pneumatic weaving machine with a control mechanism for auxiliary nozzles
WO1999034047A3 (en) * 1997-12-23 1999-10-21 Vuts Liberec As Pneumatic weaving machine with a control mechanism for auxiliary nozzles

Also Published As

Publication number Publication date
GB918927A (en) 1963-02-20
NL235246A (ja)
CH380047A (de) 1964-07-15
BE585604A (nl) 1960-04-01
DE1269963B (de) 1968-06-06
FR1245890A (fr) 1960-11-10
NL96129C (ja)

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