US2544123A - Removable nozzle spray gun - Google Patents

Removable nozzle spray gun Download PDF

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US2544123A
US2544123A US7871A US787148A US2544123A US 2544123 A US2544123 A US 2544123A US 7871 A US7871 A US 7871A US 787148 A US787148 A US 787148A US 2544123 A US2544123 A US 2544123A
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nozzle
air
nipple
sleeve
screwed
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US7871A
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Andersson John Olle
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0861—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with one single jet constituted by a liquid or a mixture containing a liquid and several gas jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits

Definitions

  • This invention relates to spray guns of the type provided with nozzles for a coating composition and for air mounted on a handle.
  • the object of the invention is to provide an improved arrangement of the composition and air nozzles permitting of a rapid exchange of nozzles for various purposes and of taking the nozzle device apart for the purpose of cleaning the same.
  • the invention is principally distinguished by the feature that the coating composition and air are supplied to the nozzles through separate channels which are connected to corresponding passages or passage systems in a nozzle nipple, which is removably arranged on a nozzle holder extending from the handle, and on which the composition and air nozzles are exchangeably mounted.
  • Fig. l is an axial section through the nozzl holder extending from the handle and the nozzles arranged thereon according to an embodiment ofthe invention
  • Fig. 2 is a cross section on and Fig. 3 shows a modified construction of the nozzle arrangement.
  • the nozzle nipple carrying the nozzles for the coating composition and for the air is divided into two sleeveshaped members 2!, 22, the outer oneof which, i. e. the sleeve 22 provided with a hexagonal head 5, being threaded onto the outer end of the internal sleeve 2!, which is in turn threaded with the inner end thereof into the nozzle holder I, and being so arranged that the centre bore 8 thereof communicates with the supply passage 2 for the coating composition.
  • the object of this construction of the nozzle nipple is to render possible efficient tightening of the connection of the line 22 in Fig. 1;
  • the internal sleeve 2! is provided with a collar 23 formed into a nut head, said collar bearing tightly at,24, against a plane surface on the end of the nozzle holder 5.
  • the coating composition is prevented irom being pressed out between the threads 25 to the annular space I provided in the outer end of the nozzle holder, said space haying the air passage 3 opening into the same.
  • a tight connection of the nozzle nipple 2 to the air passage 3 is obtained by the feature that the outer sleeve 22 is adapted by means of the nut head 5, andindependently of the internal sleeve 2
  • the air passages H in the outer sleeve 22 of the nozzle nipple communicate with the air passage 3 through a recess 21 in the nut head 5 corresponding to the recess l5.
  • nozzle 6 for the coating composition is screwed into the nozzle nipple, that is to say, in this case into the outer sleeve 22 of the nozzle nipple, a tightening connection to the passage 8 being obtained by the fact that the nozzle is provided with a collar 28 formed into a nut head, said collar being set against the plane end of the sleeve 2 [to tighten thereagainst in the screwingin operation.
  • the needle valve I6 is adapted to bear with its conical end portion against the inner end of the nozzle 6, for the purpose of cutting off the composition supply.
  • the valve seat is thus located at the inner end of the passage extending through the nozzle.
  • valve seat can be made independent, with respect to the position and size thereof, so that varying widths of the exit opening of the nozzle can be obtained.
  • said needle valve then co-operating with a valve seat having the same width in all nozzles and being situated at the inner end of the nozzle.
  • the arrangement has the advantage that the needle valve can be made slightly tapering from the valve seat toward the point thereof, so that a greater degree of Vernier adjustment is obtained.
  • a further improvement consists in that the air nozzle 1, II is adjustable in the axial direction relatively to the nozzle 6 for the coating composition.
  • the air nozzle is divided into two parts, one I I being provided with the air passages l2 and formed into a nut and being threaded onto the nozzle 6, whereas the sleeveshaped member 1 is threaded onto the outer sleeve 22 of the nozzle nipple.
  • the air nozzle may thus be displaced axially outwards or inwards to render possible a suitable adjustment of the air passages l2 relatively to the jet ejected from the composition nozzle.
  • the sleeve 1 is set against the inside of said member to provide an outward tightening of the intermediate space I 2.
  • a packing ring 29 is interposed between the end portion of the sleeve 7 and the member H.
  • the sleeve 1' having been set against the member II, it is locked in position by the nut 9, an efficient tightening effect being obtained at the same time, which will prevent air from leaking out along the threads 30.
  • Fig. .1 shows the air'nozzle screwed into its innermost extreme position.
  • the composition jet has for its object to render possible different eifects in the squirting-of fithe composition.
  • the air nozzle ll isrremoved, so that the air jets escaping fromthe' passagesl'2 are caused to hit the composition jetiat a greater distance from the mouth of the composition nozzle, the composition jet is atomized ina lesser degree so that a greaterconcentration of'the 'filamentary composition particles on the surface adapted to receive same is obtained.
  • Fig. 3 differs from the construction according toFigs. 1 and'2 only by the formation of the member II of the air nozzle containing the air passages, in that said member'isprovided with a central portion formed in'toa nozzle 3
  • the member I! may be adjusted axially with respect' to-the nozzle'6 by being screwed inwardly and outwardly on the nozzle 6, the sleeve 1 being then, as in Fig.1, set against the member I after the adjustment thereof has been efiected.
  • the air nozzle H is shown in its innermost position, the inner'edge of the bore 32 in the-nozzle 3
  • the embodiment according to Fig. 3 isparticularly intended for splash squirting, a piece of yarn being clamped between the nozzles 6 and 3
  • Aspray gun comprising in combination, a nozzle holder; a central 'nipplemember screwed .into saidnozzle holder and having a paint channel andafirst tightening .collar; a sleeve-shaped nipple member screwed on said central nipple member and having .air channels and a second tightening collar; tightening surfaces on the end of said nozzle holder opposite said tightening collars; a paint nozzle screwed into said central nipple member; an air nozzle screwed on the end of said paint nozzle and having air passages; and means forming an air-tight connection between said air passages and said air channels in said sleeve-shaped member.
  • a spray gun comprising in combination, a
  • a spray gun comprising in combination, a nozzle holder; a two-part nozzle nipple including a central paint-carrying nipple member screwed into said nozzle holder and a sleeve-shaped nipple member screwed on said central nipple member; air channels extending through said nozzle nipple; a paint nozzle screwed into said central nipple member; an air nozzle screwed on the-end of said paint nozzle; and means forming an air-tight connection between said air nozzle and said "nozzle nipple.
  • a spray gun comprising in combination a nozzle holder; a two-part nozzle nipple including a'centralipaint carrying nipple member screwed into'said nozzle holder and a sleeve-shaped nipple member screwed on said nipple member; air channels extending through said nozzle nipple; a paint nozzle screwed into said central nipple member; an air nozzle screwed to and displacea-ble lengthwise of said paint nozzle; a sleeve screwed on said sleeve-shaped nipple member and enclosing an'air space formed between said sleeve and "said paint nozzle; air passages in said air nozzle communicating through said space with said air channels in said nozzle nipple; and tightening means arranged between said air nozzle and said sleeve.

Description

March 6, 1951 J. o. ANDERSSON REMOVABLE NOZZLE SPRAY GUN Filed Feb, 12, 1948 Patented Mar. 6, 1951 UNITED STATES PATENT OFFICE 2,544,123 REMOVABLE NOZZLE SPRAY GUN John Olle Andersson, Ektorp, Sweden Application February 12, 1948, Serial No. 7,871 In Sweden January 27, 1944 4 Claims. (Cl. 299-441) This invention relates to spray guns of the type provided with nozzles for a coating composition and for air mounted on a handle.
The object of the invention is to provide an improved arrangement of the composition and air nozzles permitting of a rapid exchange of nozzles for various purposes and of taking the nozzle device apart for the purpose of cleaning the same.
The invention is principally distinguished by the feature that the coating composition and air are supplied to the nozzles through separate channels which are connected to corresponding passages or passage systems in a nozzle nipple, which is removably arranged on a nozzle holder extending from the handle, and on which the composition and air nozzles are exchangeably mounted.
The invention will be described with reference to the accompanying drawings, which illustrate preferred embodiments of a nozzle arrangement according to the invention.
Fig. l is an axial section through the nozzl holder extending from the handle and the nozzles arranged thereon according to an embodiment ofthe invention;
Fig. 2 is a cross section on and Fig. 3 shows a modified construction of the nozzle arrangement.
In the construction shown in Fig. l, the nozzle nipple carrying the nozzles for the coating composition and for the air is divided into two sleeveshaped members 2!, 22, the outer oneof which, i. e. the sleeve 22 provided with a hexagonal head 5, being threaded onto the outer end of the internal sleeve 2!, which is in turn threaded with the inner end thereof into the nozzle holder I, and being so arranged that the centre bore 8 thereof communicates with the supply passage 2 for the coating composition. The object of this construction of the nozzle nipple is to render possible efficient tightening of the connection of the line 22 in Fig. 1;
nipple to the passage 2 as well as to the air passage 3. The tightening effect against the passage 2 is brought about by the feature that the internal sleeve 2! is provided with a collar 23 formed into a nut head, said collar bearing tightly at,24, against a plane surface on the end of the nozzle holder 5. The coating composition is prevented irom being pressed out between the threads 25 to the annular space I provided in the outer end of the nozzle holder, said space haying the air passage 3 opening into the same. Similarly, a tight connection of the nozzle nipple 2 to the air passage 3 is obtained by the feature that the outer sleeve 22 is adapted by means of the nut head 5, andindependently of the internal sleeve 2|, to be set against a plane surface 26 on the end of the nozzle holder i, so that air cannot leak out at this point. The air passages H in the outer sleeve 22 of the nozzle nipple communicate with the air passage 3 through a recess 21 in the nut head 5 corresponding to the recess l5.
Then nozzle 6 for the coating composition is screwed into the nozzle nipple, that is to say, in this case into the outer sleeve 22 of the nozzle nipple, a tightening connection to the passage 8 being obtained by the fact that the nozzle is provided with a collar 28 formed into a nut head, said collar being set against the plane end of the sleeve 2 [to tighten thereagainst in the screwingin operation. The needle valve I6 is adapted to bear with its conical end portion against the inner end of the nozzle 6, for the purpose of cutting off the composition supply. The valve seat is thus located at the inner end of the passage extending through the nozzle. This arrangement has the advantage that the valve seat can be made independent, with respect to the position and size thereof, so that varying widths of the exit opening of the nozzle can be obtained. Thus, when another nozzle having a different exit opening is inserted, the same needle valve It may still be used, said needle valve then co-operating with a valve seat having the same width in all nozzles and being situated at the inner end of the nozzle.
Furthermore, the arrangement has the advantage that the needle valve can be made slightly tapering from the valve seat toward the point thereof, so that a greater degree of Vernier adjustment is obtained. I
A further improvement consists in that the air nozzle 1, II is adjustable in the axial direction relatively to the nozzle 6 for the coating composition. To this end, the air nozzle is divided into two parts, one I I being provided with the air passages l2 and formed into a nut and being threaded onto the nozzle 6, whereas the sleeveshaped member 1 is threaded onto the outer sleeve 22 of the nozzle nipple. By turning the member ll relatively to the nozzle 6, the air nozzle may thus be displaced axially outwards or inwards to render possible a suitable adjustment of the air passages l2 relatively to the jet ejected from the composition nozzle. The adjustment of the member I I having been effected, the sleeve 1 is set against the inside of said member to provide an outward tightening of the intermediate space I 2. To provide for a good tightening efiect, a packing ring 29 is interposed between the end portion of the sleeve 7 and the member H. The sleeve 1' having been set against the member II, it is locked in position by the nut 9, an efficient tightening effect being obtained at the same time, which will prevent air from leaking out along the threads 30. Fig. .1 shows the air'nozzle screwed into its innermost extreme position.
The adjustment of the air nozzle ll relatively,
to the composition jet has for its object to render possible different eifects in the squirting-of fithe composition. When the air nozzle ll isrremoved, so that the air jets escaping fromthe' passagesl'2 are caused to hit the composition jetiat a greater distance from the mouth of the composition nozzle, the composition jet is atomized ina lesser degree so that a greaterconcentration of'the 'filamentary composition particles on the surface adapted to receive same is obtained. On the dther hand, when'the air nozzle is screwed into positiomgreater spreading of the atomized composition jet is obtained, inasmuch as the air jet escaping through the passages IZwill then hit the composition jet nearer to the mouth of the composition nozzle, the jet being thus atomized into greater particles and being deposited in the form offilamentary splashes on the object receiving the composition. This adjustment of the air nozzle relatively to the composition'nozzle is of particular importance in the use of comparatively viscous compositions. With the-use of compositions of greater liquidity'the formation of splash may also be obtained toa'certain extent by a regulation "of the air nozzle relatively to the composition nozzle. I
'The embodiment shown in Fig. 3 differs from the construction according toFigs. 1 and'2 only by the formation of the member II of the air nozzle containing the air passages, in that said member'isprovided with a central portion formed in'toa nozzle 3|, said central portion having the nozzle 6 opening into the same. In this case, too,'the member I! may be adjusted axially with respect' to-the nozzle'6 by being screwed inwardly and outwardly on the nozzle 6, the sleeve 1 being then, as in Fig.1, set against the member I after the adjustment thereof has been efiected. In the drawing, the air nozzle H is shown in its innermost position, the inner'edge of the bore 32 in the-nozzle 3| abuttingagainst the end of the nozzle 6.
The embodiment according to Fig. 3 isparticularly intended for splash squirting, a piece of yarn being clamped between the nozzles 6 and 3|, 'for'thepurpose of obtaining larger composition particles.
What I claim is:
"1. Aspray gun, comprising in combination, a nozzle holder; a central 'nipplemember screwed .into saidnozzle holder and having a paint channel andafirst tightening .collar; a sleeve-shaped nipple member screwed on said central nipple member and having .air channels and a second tightening collar; tightening surfaces on the end of said nozzle holder opposite said tightening collars; a paint nozzle screwed into said central nipple member; an air nozzle screwed on the end of said paint nozzle and having air passages; and means forming an air-tight connection between said air passages and said air channels in said sleeve-shaped member.
2. A spray gun, comprising in combination, a
."of said nozzle holder opposite said tightening collars; alpaint nozzle screwed into said central nipple member; an air nozzle screwed on the end 'ofesaid paint nozzle and having air passages; means "forming an air-tight connection between said airpassages and said air channels in said sleeve-shaped member, said air-tight connection including a sleeve screwed on said sleeve-shaped nipple member; and tightening means arranged between said air nozzle and said sleeve.
3. A spray gun comprising in combination, a nozzle holder; a two-part nozzle nipple including a central paint-carrying nipple member screwed into said nozzle holder and a sleeve-shaped nipple member screwed on said central nipple member; air channels extending through said nozzle nipple; a paint nozzle screwed into said central nipple member; an air nozzle screwed on the-end of said paint nozzle; and means forming an air-tight connection between said air nozzle and said "nozzle nipple.
4. "A spray gun comprising in combination a nozzle holder; a two-part nozzle nipple including a'centralipaint carrying nipple member screwed into'said nozzle holder and a sleeve-shaped nipple member screwed on said nipple member; air channels extending through said nozzle nipple; a paint nozzle screwed into said central nipple member; an air nozzle screwed to and displacea-ble lengthwise of said paint nozzle; a sleeve screwed on said sleeve-shaped nipple member and enclosing an'air space formed between said sleeve and "said paint nozzle; air passages in said air nozzle communicating through said space with said air channels in said nozzle nipple; and tightening means arranged between said air nozzle and said sleeve.
JOHN OLLE ANDERSSON.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 451,784 Upson et a1 May 5, 1891 1,349,154 'Holton Aug. 10, 1920 1,547;349 Reichenbach July 28, 1925 1,586,009 Shelburne May 25, 1926 1,767,462 Lammert et al. June 24, 1930 1,876,643 Downs Sept. 13, 1932 FOREIGN PATENTS Number Country Date 347,452 Germany Jan. 20, 1922 416,235 France Aug. 2, 1910
US7871A 1944-01-27 1948-02-12 Removable nozzle spray gun Expired - Lifetime US2544123A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796376A (en) * 1972-07-28 1974-03-12 Irmgard Farnsteiner Spray gun
FR2400963A1 (en) * 1977-05-26 1979-03-23 Welsh John DEVICE FOR ATTACHING A NOZZLE TO A VAPORIZATION GUN
US4899938A (en) * 1987-10-28 1990-02-13 Havrilla Jr John W Liquid spray nozzle adapter
US6068202A (en) * 1998-09-10 2000-05-30 Precision Valve & Automotion, Inc. Spraying and dispensing apparatus
US6085996A (en) * 1998-03-05 2000-07-11 Coating Atomization Technologies, Llc Two-piece spray nozzle
US6098902A (en) * 1999-05-14 2000-08-08 Coating Atomization Technologies, Llc Spray gun for atomizing and applying liquid coatings having interchangeable nozzle assemblies
US6170760B1 (en) 1999-01-25 2001-01-09 Precision Valve & Automation, Inc. Compact spray valve
US6230986B1 (en) * 1999-01-11 2001-05-15 Itw Surfaces And Finitions Spray head for paint and similar substances

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US451784A (en) * 1891-05-05 And frederick a
FR416235A (en) * 1910-04-30 1910-10-14 Henri Metral Apparatus for applying paint using compressed air
US1349154A (en) * 1919-06-09 1920-08-10 Birchard E Holton Air-brush
DE347452C (en) * 1922-01-20 Robert Ludwig Plensdorf Paint atomizer
US1547349A (en) * 1923-06-02 1925-07-28 Howard W Beach Nozzle for air brushes
US1586009A (en) * 1923-02-08 1926-05-25 Shelburne Augustine Air brush
US1767462A (en) * 1927-01-31 1930-06-24 George C Lammert Nozzle
US1876643A (en) * 1927-01-14 1932-09-13 Eclipse Air Brush Company Inc Device for spraying paints, lacquers or other liquids

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US451784A (en) * 1891-05-05 And frederick a
DE347452C (en) * 1922-01-20 Robert Ludwig Plensdorf Paint atomizer
FR416235A (en) * 1910-04-30 1910-10-14 Henri Metral Apparatus for applying paint using compressed air
US1349154A (en) * 1919-06-09 1920-08-10 Birchard E Holton Air-brush
US1586009A (en) * 1923-02-08 1926-05-25 Shelburne Augustine Air brush
US1547349A (en) * 1923-06-02 1925-07-28 Howard W Beach Nozzle for air brushes
US1876643A (en) * 1927-01-14 1932-09-13 Eclipse Air Brush Company Inc Device for spraying paints, lacquers or other liquids
US1767462A (en) * 1927-01-31 1930-06-24 George C Lammert Nozzle

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796376A (en) * 1972-07-28 1974-03-12 Irmgard Farnsteiner Spray gun
FR2400963A1 (en) * 1977-05-26 1979-03-23 Welsh John DEVICE FOR ATTACHING A NOZZLE TO A VAPORIZATION GUN
US4171096A (en) * 1977-05-26 1979-10-16 John Welsh Spray gun nozzle attachment
US4899938A (en) * 1987-10-28 1990-02-13 Havrilla Jr John W Liquid spray nozzle adapter
US6085996A (en) * 1998-03-05 2000-07-11 Coating Atomization Technologies, Llc Two-piece spray nozzle
US6068202A (en) * 1998-09-10 2000-05-30 Precision Valve & Automotion, Inc. Spraying and dispensing apparatus
US6230986B1 (en) * 1999-01-11 2001-05-15 Itw Surfaces And Finitions Spray head for paint and similar substances
US6170760B1 (en) 1999-01-25 2001-01-09 Precision Valve & Automation, Inc. Compact spray valve
US6523757B1 (en) 1999-01-25 2003-02-25 Precision Valve & Automation, Inc. Compact spray valve
US6098902A (en) * 1999-05-14 2000-08-08 Coating Atomization Technologies, Llc Spray gun for atomizing and applying liquid coatings having interchangeable nozzle assemblies

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