US3863822A - Nozzle device for producing a fluid jet - Google Patents

Nozzle device for producing a fluid jet Download PDF

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Publication number
US3863822A
US3863822A US356103A US35610373A US3863822A US 3863822 A US3863822 A US 3863822A US 356103 A US356103 A US 356103A US 35610373 A US35610373 A US 35610373A US 3863822 A US3863822 A US 3863822A
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US
United States
Prior art keywords
nozzle
fluid
chamber
nozzle device
jet
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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
Application number
US356103A
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English (en)
Inventor
Rachid Keldany
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.)
Maschinenfabrik Rueti AG
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Maschinenfabrik Rueti AG
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Publication date
Application filed by Maschinenfabrik Rueti AG filed Critical Maschinenfabrik Rueti AG
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Publication of US3863822A publication Critical patent/US3863822A/en
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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

Definitions

  • the present invention relates to a nozzle device for producing a jet of a fluid for the insertion of weft [30] Foreign Application Priority Data threads intoa shed on a loom, the nozzle dev ce comprising an inner portion and an outer portion sur May 29, i972 Switzerland 7395/72 rounding the inner portion, there i g p id r tween'the inner portion and the outer portion a chame I erw 1C contalnsa u ,.W C c am er ,5 tat 2% F 8 b h'h fl'd h'h h b l 5 ally symmetrical about the axis of the nozzle, and 1 0 care l which chamber has apertures therein for supplying the 19/66 T fluid and a fluid exiting nozzle aperture surrounding a Reference
  • the present invention is characterized in that the chamber has between the inner portion and the outer portion of the nozzle device, extending rearwardly away from the nozzle aperture, an alignment or "aiming" portion which determines the direction of the jet and which is prolonged in the form ofa storage portion, the apertures for supplying the fluid to the chamber being located in the chamber zone remote from the nozzle aperture.
  • FIG. 1 is a longitudinal section through the nozzle device which is symmetrical in shape
  • FIG. 2 illustrates the important features of the chamber containing the fluid, the velocity distribution of the fluid in the chamber also being shown.
  • the nozzle device 11 shown in FIG. 1 has a jet or nozzle needle 12 affording an inner part or portion.
  • the nozzle needle or inner portion 12 is surrounded by an outer part or portion which, according to this example of embodiment, embraces a nozzle insert 13 and a nozzle head 16.
  • a securing screw or threaded cap 32 is also provided.
  • the inner portion 12, the nozzle insert 13, and the nozzle head 16 of the outer portion constitute, or define together, a fluid chamber 14.
  • Apertures 15 serve for feeding a fluid from a fluid supply zone 15a into the chamber 14.
  • a fluid supply source not shown conveys the fluid to the supply zone 15a through fluid supply conduit 15b from a standard fluid feeding device 150.
  • the nozzle insert 13 and the nozzle needle 12 are united and held in operation position by means of the nozzle head 16 and the securing screw 32.
  • the screw 32 is adapted to be screwed through the agency of the screw thread 33 to threaded portion of head 16.
  • the nozzle insert presses against packings I7 and provides for preventing the escapement ofthe fluid out of the nozzle device 11.
  • the nozzle device can be secured to the loom by means ola support rod 19.
  • the nozzle needle 12 is rotatable about a pivot line 18 relative to the nozzle insert 13 and, optionally, also the nozzle head 16 along the said pivot line 18.
  • a weft thread is guided through the bore 20 formed in the nozzle needle 12.
  • the nozzle needle I2 is adapted to be inserted into the nozzle insert 13 from the left-hand side.
  • the fluid chamber 14 is symmetrical in rotation and comprises a storage portion and an aligning or aiming" portion, the longitudinal sections of which are delimited by walls 21, 22 and by curved portions of walls 23, 24.
  • delimitation of the storage portion is afforded approximately by dashed boundary lines 25, 26, and delimitation of the guiding portion by dashed boundary lines 26, 27.
  • An annular nozzle aperture 28 formed between the adjacent inside portion of nozzle insert I3 and the outside portion of the needle nozzle 12 coincides with the boundary line 27 through which the fluid exits as a jet from said chamber.
  • An eyelet 30 may be provided with a small degree of spacing from the nozzle aperture 28.
  • the design of the nozzle is discussed further in detail with reference to FIG. 2.
  • the curved portions of walls 23 and 24 extending between the boundaries 26 and 27 are represented as component portions of parabolic curves 31 and 32 in their flow pattern, the foci of which are displaced in the axial direction.
  • the opening of the aligning portion toward the nozzle aperture 28 diminishes continuously by values becoming progressively smaller.
  • the delimiting portions 21, 22 of the cross-section of the storage part of the chamber 14 extend rectilinearly.
  • Each of the walls 21, 22 forms a tangent 21 and 22, respectively, in each instance to one of the parabolas 31 and 32 (see A of FIG. 2).
  • the chamber 14 is symmetrically rotational in shape, the delimiting portions of which follow a configuration which is rectilinear in respect of the wall 21, 22 and curved in respect of the parabola portions 23, 24. If a fluid, for example a liquid, is routed through the apertures 15 into the chamber 14, and through the latter, then the velocity pattern of the liquid is that represented by the curve 33 in the portion B of FIG. 2. The velocity is plotted in B of FIG. 2 as ordinate, as a function of location, taken in the direction of the axis 18. It will bev appreciated that, directly at the boundary line 26, the acceleration of the fluid increases and that it reaches its maximum value between the boundary lines 26 and 27.
  • a fluid for example a liquid
  • the volume of the chamber 14 is so calculated that it is at least approximately equal to the quantity of liquid required for inserting an individual pick.
  • the design of the walls of the chamber 14, in particular in the vicinity of the nozzle aperture 28, must be effected with maximum accuracy.
  • the nozzle needle 12 and the nozzle insert 13 are rotatable about the pivot 18 relative to each other. This may for example be effected by loosening the releasable screw 32 and, thereupon, manually rotating the front portion 34 of the nozzle insert 13. After the optimum setting has been found, the portions 12, 13 are locked by retightening the screw 32.
  • edges of the material'at the location of the delimiting portion 27 may be deactivated so that there is no turbulance as the fluid flows out of the annular opening formed by the nozzle aperture.
  • the nozzle according to the present invention is suitable above all for a jet of liquid.
  • the nozzle according to the invention produces a jet which is sharply focused over a considerable length.
  • Nozzle device for producing a jet of fluid for inserting weft threads into a shed on a loom, the said nozzle device comprising an inner portion and an outer portion symmetrically surrounding said inner portion, said inner and outer portions defining a ring shaped nozzle aperture for ajet of fluid to flow out, there being defined between the said inner portion and the said outer portion a chamber which contains the weft thread propelling fluid, said outer portion being formed with a plurality of apertures for supplying the fluid to said chamber from a fluid source, said chamber having a front and a rear zone with its front zone extending rearwardly away from said nozzle aperture and forming an aiming" portion for determining the direction of the flow of'said jet of fluid, and which is prolonged by said rear zone forming a storage portion, the apertures for supplying the fluid to said chamber being located in said rear zone remote from the nozzle aperture, said aiming portion being elongated and delimited by two walls at least one of which is conical and that converge with respect to each other to
  • Nozzle device in which the delimiting of the aiming portion by said two walls produc'es a configuration of the flow velocity pattern which is defined by two parabolas that are offset relative to each other in the axial direction.
  • Nozzle device in which the I storage portion is delimited by two walls including an acute angle with the nozzle axis and approaching each other in the direction towards the nozzle aperture.
  • Nozzle device for the insertion of weft threads by means of a liquid, in which the volume of said chamber is at least approximately equal to the volume of the quantity of liquid required for the insertion of the weft thread being drawn through said bore.
  • Nozzle device in which the inner portion and the outer portion are rotatable relative to each other.
  • Nozzle device according to claim 5 in which said chamber is formed by the outer surface of the inner portion and the inner surface of the outer portion, and the inner portion is adapted to be inserted in the axial direction into the outer portion and is adapted to be held firmly in relationship to the outer portion by means of a releasable securing screw.
  • Nozzle device in which the foremost delimiting portions of the nozzle aperture are constituted by deactivated edges.
  • Nozzle device in which the two walls that delimit the storage portion are continued rectilinearly from the locations of the transition to the aiming portion and abut tangentially with the walls of the aiming portion.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US356103A 1972-05-29 1973-05-01 Nozzle device for producing a fluid jet Expired - Lifetime US3863822A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH789572A CH545364A (de) 1972-05-29 1972-05-29 Düse zum Erzeugen eines Strahles eines Fluidums

Publications (1)

Publication Number Publication Date
US3863822A true US3863822A (en) 1975-02-04

Family

ID=4332011

Family Applications (1)

Application Number Title Priority Date Filing Date
US356103A Expired - Lifetime US3863822A (en) 1972-05-29 1973-05-01 Nozzle device for producing a fluid jet

Country Status (10)

Country Link
US (1) US3863822A (US07534539-20090519-C00280.png)
JP (1) JPS5227753B2 (US07534539-20090519-C00280.png)
BE (1) BE800113A (US07534539-20090519-C00280.png)
BR (1) BR7303619D0 (US07534539-20090519-C00280.png)
CH (1) CH545364A (US07534539-20090519-C00280.png)
CS (1) CS175457B2 (US07534539-20090519-C00280.png)
DE (1) DE2226622A1 (US07534539-20090519-C00280.png)
FR (1) FR2186849A5 (US07534539-20090519-C00280.png)
IT (1) IT972926B (US07534539-20090519-C00280.png)
SU (1) SU478466A3 (US07534539-20090519-C00280.png)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999579A (en) * 1975-12-30 1976-12-28 Enshu Limited Weft ejection nozzle for water jet looms
US4074727A (en) * 1975-06-09 1978-02-21 Joseph Rene Cornellier Liquid supply system and nozzle for jet weaving looms
US4098444A (en) * 1977-06-17 1978-07-04 E. I. Du Pont De Nemours And Company Hydrojet for propelling yarn
US4347872A (en) * 1979-08-06 1982-09-07 Leesona Corporation Air weft insertion system
US4542772A (en) * 1982-02-05 1985-09-24 Gaschuetz Heinz Apparatus for selectively introducing one or more of a plurality of different weft threads into an air jet weaving machine
US5526850A (en) * 1993-10-27 1996-06-18 Nuovo Pignone S.P.A. Main nozzle accelerator chamber for an air-jet loom
US20170189016A1 (en) * 2010-05-04 2017-07-06 Ethicon, Inc. Laser cutting system and methods for creating self-retaining sutures

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5496168A (en) * 1978-01-06 1979-07-30 Nissan Motor Weft yarn introducing apparatus air jet type loom
BE1013786A6 (nl) * 2000-10-24 2002-08-06 Picanol Nv Geleidingsbuis voor een hoofdblazer en hoofdblazer.
AU2008215431C1 (en) 2007-02-16 2013-10-17 Ono Pharmaceutical Co., Ltd. Therapeutic agent for urinary excretion disorder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452910A (en) * 1967-07-17 1969-07-01 Leesona Corp Yarn handling apparatus
US3559860A (en) * 1967-12-18 1971-02-02 Ici Ltd Textile varn handling devices
US3576284A (en) * 1968-05-22 1971-04-27 Rhodiaceta Apparatus for the treatment of bundle of filaments
US3633808A (en) * 1969-06-06 1972-01-11 Elitex Z Textilniho Shojirenst Nozzle for jet looms
US3655862A (en) * 1968-08-17 1972-04-11 Metallgesellschaft Ag Aspirator jet for drawing-off filaments

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452910A (en) * 1967-07-17 1969-07-01 Leesona Corp Yarn handling apparatus
US3559860A (en) * 1967-12-18 1971-02-02 Ici Ltd Textile varn handling devices
US3576284A (en) * 1968-05-22 1971-04-27 Rhodiaceta Apparatus for the treatment of bundle of filaments
US3655862A (en) * 1968-08-17 1972-04-11 Metallgesellschaft Ag Aspirator jet for drawing-off filaments
US3633808A (en) * 1969-06-06 1972-01-11 Elitex Z Textilniho Shojirenst Nozzle for jet looms

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074727A (en) * 1975-06-09 1978-02-21 Joseph Rene Cornellier Liquid supply system and nozzle for jet weaving looms
US3999579A (en) * 1975-12-30 1976-12-28 Enshu Limited Weft ejection nozzle for water jet looms
US4098444A (en) * 1977-06-17 1978-07-04 E. I. Du Pont De Nemours And Company Hydrojet for propelling yarn
US4347872A (en) * 1979-08-06 1982-09-07 Leesona Corporation Air weft insertion system
US4542772A (en) * 1982-02-05 1985-09-24 Gaschuetz Heinz Apparatus for selectively introducing one or more of a plurality of different weft threads into an air jet weaving machine
US5526850A (en) * 1993-10-27 1996-06-18 Nuovo Pignone S.P.A. Main nozzle accelerator chamber for an air-jet loom
US20170189016A1 (en) * 2010-05-04 2017-07-06 Ethicon, Inc. Laser cutting system and methods for creating self-retaining sutures
US10952721B2 (en) * 2010-05-04 2021-03-23 Ethicon, Inc. Laser cutting system and methods for creating self-retaining sutures
US11234692B2 (en) 2010-05-04 2022-02-01 Cilag Gmbh International Self-retaining system having laser-cut retainers

Also Published As

Publication number Publication date
BR7303619D0 (pt) 1974-07-25
JPS5227753B2 (US07534539-20090519-C00280.png) 1977-07-22
DE2226622A1 (de) 1973-12-13
SU478466A3 (ru) 1975-07-25
FR2186849A5 (US07534539-20090519-C00280.png) 1974-01-11
IT972926B (it) 1974-05-31
CS175457B2 (US07534539-20090519-C00280.png) 1977-05-31
BE800113A (fr) 1973-09-17
CH545364A (de) 1973-12-15
JPS4926569A (US07534539-20090519-C00280.png) 1974-03-09

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