US2513081A - Multichromatic spraying apparatus - Google Patents

Multichromatic spraying apparatus Download PDF

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Publication number
US2513081A
US2513081A US71536246A US2513081A US 2513081 A US2513081 A US 2513081A US 71536246 A US71536246 A US 71536246A US 2513081 A US2513081 A US 2513081A
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Prior art keywords
liquid
component
nozzle
single
fitting
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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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Inventor
Edward M Clark
Fernand E Ledecq
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Sherwin-Williams Co
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Sherwin-Williams Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02Spray pistols; Apparatus for discharge
    • B05B7/04Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0408Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02Spray pistols; Apparatus for discharge
    • B05B7/08Spray 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
    • B05B7/0807Spray 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
    • B05B7/0815Spray 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 at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter

Description

Patented June 27, 1950 MULTICHROMATIC SPRAYING AiPARATUS Edward M. Clark and Fernand E. Ledecq, Montreal, Quebec, Canada, assignors, by mesne assignments, to The Sherwin-Williams Company, Cleveland, hio,'a corporation of Ohio Application December 11, 1946, Serial No. 715,362

- In Canada September 5, 1946 2 Claims.

This invention relates to improvements in hand-held spraying appliances of the spray-gun ype The conventional spray gun has a single liquid inlet through which liquid is delivered under pressure to a liquid passage leading to a liquid discharge nozzle. The discharge orifice of said nozzle is normally closed by a spring-biased needle valve which is opened by a trigger element which also serves to open a normally closed spring-biased air valve controlling the delivery of compressed air to an air nozzle fitted over the'liquid nozzle. The air nozzle is provided with a central orifice through which atomizing air is delivered in an annular stream enveloping the stream of liquid issuing from the liquid nozzle. The air nozzle is also provided with so-called fanning ports through which part of the compressed air is directed against the atomized stream of liquid to effect a flattening or fanning out of said stream.

Conventional spray guns having a single liquid inlet have long been used in the paint industry for applying chromatic finishes to various produots. With such guns, the application of multichromatic finishes, such as hammered or spot pattern finishes, toned hammer finishes, and diffused pattern finishes, require several operations since each colour is applied in a separate spray by a separate "gunning procedure.

It has recently been demonstrated'that multichromatic finishes, superior to those obtained when the component colours are applied by separate gunning operations with conventional spray guns, can be obtained by .the use of a specially designed spray gun through which the component colours are simultaneously applied in a single spray. This special gun is provided with separate liquid inlets opening at difierent points into a single liquid passage in which the component colours are appropriately mixed or blended immediately prior to being discharged in a single spray through the discharge orifice of a liquid nozzle located at the discharge end of said passage. Each liquid inlet is connected by a separate conduit to a pressure supply vessel containing one component colour of the finish. Removable bushing-type inserts of predetermined bore dimensions are fitted in the liquid inlets of the gun to control the amount of each of the component colours introduced into the liquid passage of the gun. These inserts are interchangeable with other inserts of different bore dimensions to give difierent flow and pattern effects.

According to this invention the superior multi-component finishes applied in a single spray by the aforesaid special spray gun'are du- "plicated by the use of a conventional spray gun equipped with a multi-branch adapter attachment having one branch coupled to the single liquid inlet nipple of the gun and having eachof a plurality of remaining branches connected, by a separate liquid supply line, to a pressure vessel containing one of the component coating materials of the multi-component finish. In this case, the inserts which control the flow and pattern effects are fitted in those branches of the adapter attachment which are connected to the paint or enamel-containing pressure vessels.

A preferred embodiment of the invention is shown in the accompanying-drawings, in which- Figure l is a side view of a conventional spray gun equipp d with our improved multi-branch adapter attachment and shows the manner \in which the attachment is applied by connecting one branch thereof to the singl liquid inlet nipple of the. gun and connecting each of the remaining branches to the liquid outlet fitting of a liquid pressur vessel containing one of the component coating materials of the multi-component finish which is applied, in a single spray, through the liquid nozzle of the gun.

Figure 2 is a side view of the adapter attachment per se.

In these drawings we have shown a conventional spray gun 5 having a liquid nozzle 6 located at the discharge end of a liquid passage 1. The discharge orifice of nozzle 6 is normally closed by a spring-biased needle valve 8 which is operated to open position by a conventional valve-controlling trigger 9. Liquid is delivered under pressure to a single liquid inlet nipple l0 opening into liquid passage 1. In the open position of valve 8 a stream of liquid is discharged from nozzle 6 and is enveloped by an annular stream of atomizing air. discharged through the central orifice ll of a conventional air nozzle l2.

3 The. air nozzle is fitted on the liquid nozzle in the usual manner and is provided with conventional fan ports l3 through which compressed air A is directed against the atomized stream of liquid to effect a flattening and fanning out of said stream. A normally closed spring-biased air valve l4 controls air passages in the gun (not shown) through which compressed air is supplied to the central orifice II and fan ports l3 of air nozzle l2. Valve 14 includes a valve stem l5 against which trigger 9 acts to open said valve.

The adapter attachment provided in accordance with our invention is generally indicated at l6. It comprises a multi-branch fitting through which the component coating materials of a multi-component finish are delivered to inlet nipple 10 of gun 5 from suitable pressure vessels l1 and I8, each containing one of said coating materials. One branch 19, constituting the outlet branch of fitting I6, is provided at its outer end with a conical portion 20 which is held tightly against a conical seat Illa of nipple In by a coupling nut 2| which is screwed onto said nipple and is provided with a clamping flange 22 bearing against a shoulder 23 formed by the conical portion 20. The two remaining branches 24 and 25 of'fitting l6 are respectively connected by condu'its 26 and 21 to liquid outlet fittings 28 and 29 of pressure vessels I1 and I8.

Bushing-type inserts 30 and 3|, provided with bores 32 and 33 of predetermined dimensions, are arranged in the liquid inlet branches 24 and 25 of fitting l6. These inserts control the relative amounts of the component coating materials supplied to the liquid inlet 10 of the gun through the fitting l6 and are interchangeable with other inserts of difierent bore dimensions to give different flow and pattern efiects.

Fitting I6 is internally partitioned, as indicated at 34, to prevent premature mixing of the component coating materials of the finish within said fitting. In this connection, it will be noted that partition 34 divides the interior of the fitting into separate flow passages 35 and 36 in which the component colours of the finish are kept separate from each other until they pass into liquid inlet nipple l0 of spray gun 5.

In the use of the spraying apparatus described multi-component finish are delivered under pressure from vessels l1 and 18 to inlet branches 24 and 25 of fitting I6 and pass through the separate flow passages 35 and .36 to the liquid inlet nipple 10. When trigger 9 is operated to open needle valve 8 and air valve M, the component coating materials are simultaneously discharged through the discharge orifice of liquid nozzle 6 in a single stream which is enveloped by an annular stream of atomizing air delivered through the central orifice of air nozzle l2 and the stream of atomized liquid is fiattened'and fanned'out by the impinging jets of compressed air delivered through the fan ports l3 of the air nozzle. The

multi-component pattern effects obtained are We claim:

1. Spraying apparatus for simultaneously applying the component coating materials of a multi-component finish in a single spray comprising a spray gun provided with a spray nozzle and a single liquid inlet opening through which all of said coating materials are passed to said nozzle, a plurality of supply vessels each adapted to contain a component coating material of the multi-component finish, and a multi-branch fitting through which the coating materials are delivered to said inlet opening from said vessels, said fitting having a. liquid outlet branch connected to said inlet opening and having a plurality of liquid inlet branches respectively connected to said vessels, said outlet branch of the fitting being internally partitioned axially thereof by a generally diametrically disposed wall to provide separate outlet ducts communicating respectively at one end with the plurality of inlet branches of the fitting and at their opposite ends with said single inlet opening, whereby mixing of said component coating materials is prevented while they are simultaneously flowing through the fitting.

2. In spray gun apparatus for simultaneously applying the component liquidcoating materials of a multi-component finish in a single spray,

said apparatus including a spray gun having a single discharge orifice and a single inlet opening for supplying a plurality of coating materials thereto, a pair of supply vessels for respectively containing two diiierent coating materials under pressure, and a pair of conduits respectively connected to said vessels for conveying the two coating materials separately to said spray gun; the combination of a multi-branch fitting comprising a pair of inlet branches respectively connected to said conduits for receiving the coating materials therefrom and a single outlet branch connected to the single inlet opening of the spray gun for simultaneously feeding the two coating materials thereto, said outlet branch of the fitting being internally partitioned axially thereof by a generally diametrically disposed wall into two substantially parallel ducts for separately conducting the two coating materials from said inlet branches into the spray gun through said single inlet opening as unmixed substantially parallel flowing streams. EDWARD M. CLARK. FERNAND E. LEDECQ.

REFERENCES CITED The following references-are of record in the file of this patent:

STATES PATENTS

US2513081A 1946-09-05 1946-12-11 Multichromatic spraying apparatus Expired - Lifetime US2513081A (en)

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Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2680648A (en) * 1950-02-09 1954-06-08 Bell Aircraft Corp Aerial spray mechanism
US2696449A (en) * 1953-11-24 1954-12-07 Upson Co Method and apparatus for spray coating of surfaces
US2878063A (en) * 1956-01-23 1959-03-17 Kish Ind Inc Resin gun
US3023968A (en) * 1958-09-22 1962-03-06 Gen Motors Corp Recirculating paint spray system
US3032277A (en) * 1959-07-27 1962-05-01 Sherwin Williams Co Spray gun for multicolor paints
US3035902A (en) * 1957-04-05 1962-05-22 Kurz Rainer Apparatus for producing and conditioning chemical mixtures
US3055596A (en) * 1960-09-13 1962-09-25 Sherwin Williams Co Apparatus for producing multicomponent surface coatings
US3079090A (en) * 1959-04-27 1963-02-26 Herman W Decker Method and apparatus for applying liquids
US3084063A (en) * 1958-11-20 1963-04-02 Pilkington Brothers Ltd Process and apparatus for deposition of copper
US3087682A (en) * 1960-08-30 1963-04-30 Vilbiss Co Multi-liquid spray gun
US3178118A (en) * 1962-12-05 1965-04-13 Fred M New Plural spray nozzle apparatus for producing metallized coating
US3320975A (en) * 1960-03-14 1967-05-23 Ransburg Electro Coating Corp Serially arranged valves
US3377987A (en) * 1960-03-14 1968-04-16 Ransburg Electro Coating Corp Spray coating system
US3507451A (en) * 1968-08-21 1970-04-21 Oce W Johnson Spray gun nozzle
US3541023A (en) * 1963-03-11 1970-11-17 Olin Corp Portable foaming system
US4005825A (en) * 1974-11-20 1977-02-01 Ford Motor Company Mixing manifold for air atomizing spray apparatus
US5332157A (en) * 1990-10-01 1994-07-26 Take 5 Hand operated fluid dispenser for multiple fluids and dispenser bottle
WO1995015219A1 (en) * 1993-12-02 1995-06-08 Hose Specialties/Capri, Inc. Paint system
US5453383A (en) * 1994-06-14 1995-09-26 General Mills, Inc. Method of applying sugar coating by using steam assisted discharge nozzle
US5529245A (en) * 1994-06-23 1996-06-25 Insta-Foam Products Low cost dispenser for multi-component foams
US5772116A (en) * 1993-12-02 1998-06-30 Holt; Earl R. Recirculating paint system having an improved spray gun
US5823438A (en) * 1993-12-02 1998-10-20 Hose Specialties/Capri, Inc. Recirculating paint system having improved fluid coupling assemblies
US5954273A (en) * 1997-04-22 1999-09-21 Minnesota Mining And Manufacturing Company Spray assembly for high viscosity materials
US6179223B1 (en) 1999-08-16 2001-01-30 Illinois Tool Works Spray nozzle fluid regulator and restrictor combination
US7775401B2 (en) 2007-06-25 2010-08-17 S.C. Johnson & Son, Inc. Fluid delivery system for dispensing primary and secondary fluids
US9192949B2 (en) 2012-08-31 2015-11-24 S.C. Johnson & Son, Inc. Fluid application system
USD743806S1 (en) 2013-12-20 2015-11-24 S.C. Johnson & Son, Inc. Combined Sprayer and Refill Bottles
US9499390B1 (en) * 2012-07-17 2016-11-22 Global Agricultural Technology And Engineering, Llc Liquid delivery system
EP3318332A1 (en) * 2016-11-04 2018-05-09 Exel Industries Pneumatic spraying assembly, restrictor for such an assembly and installation for projecting a coating product comprising such an assembly or such a restrictor

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US165621A (en) * 1875-07-13 Improvement in basin-faucets
US748971A (en) * 1904-01-05 of sandusky
US808236A (en) * 1905-02-13 1905-12-26 Western Engineering Company Wall-finishing process.
US884326A (en) * 1907-06-17 1908-04-07 Mellen N Bray Means for distributing water to water-jackets of multiple-cylinder engines.
US1548317A (en) * 1922-05-05 1925-08-04 Harry S Hart Cleaning means
US1774694A (en) * 1927-04-27 1930-09-02 Ralph E Bateman Production of varicolored effects
US1863782A (en) * 1930-06-16 1932-06-21 Harvey L Young Multicolor attachment for spray guns
US1948401A (en) * 1929-08-15 1934-02-20 George A Smith Paint mixer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US165621A (en) * 1875-07-13 Improvement in basin-faucets
US748971A (en) * 1904-01-05 of sandusky
US808236A (en) * 1905-02-13 1905-12-26 Western Engineering Company Wall-finishing process.
US884326A (en) * 1907-06-17 1908-04-07 Mellen N Bray Means for distributing water to water-jackets of multiple-cylinder engines.
US1548317A (en) * 1922-05-05 1925-08-04 Harry S Hart Cleaning means
US1774694A (en) * 1927-04-27 1930-09-02 Ralph E Bateman Production of varicolored effects
US1948401A (en) * 1929-08-15 1934-02-20 George A Smith Paint mixer
US1863782A (en) * 1930-06-16 1932-06-21 Harvey L Young Multicolor attachment for spray guns

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2680648A (en) * 1950-02-09 1954-06-08 Bell Aircraft Corp Aerial spray mechanism
US2696449A (en) * 1953-11-24 1954-12-07 Upson Co Method and apparatus for spray coating of surfaces
US2878063A (en) * 1956-01-23 1959-03-17 Kish Ind Inc Resin gun
US3035902A (en) * 1957-04-05 1962-05-22 Kurz Rainer Apparatus for producing and conditioning chemical mixtures
US3023968A (en) * 1958-09-22 1962-03-06 Gen Motors Corp Recirculating paint spray system
US3084063A (en) * 1958-11-20 1963-04-02 Pilkington Brothers Ltd Process and apparatus for deposition of copper
US3079090A (en) * 1959-04-27 1963-02-26 Herman W Decker Method and apparatus for applying liquids
US3032277A (en) * 1959-07-27 1962-05-01 Sherwin Williams Co Spray gun for multicolor paints
US3377987A (en) * 1960-03-14 1968-04-16 Ransburg Electro Coating Corp Spray coating system
US3320975A (en) * 1960-03-14 1967-05-23 Ransburg Electro Coating Corp Serially arranged valves
US3087682A (en) * 1960-08-30 1963-04-30 Vilbiss Co Multi-liquid spray gun
US3055596A (en) * 1960-09-13 1962-09-25 Sherwin Williams Co Apparatus for producing multicomponent surface coatings
US3178118A (en) * 1962-12-05 1965-04-13 Fred M New Plural spray nozzle apparatus for producing metallized coating
US3541023A (en) * 1963-03-11 1970-11-17 Olin Corp Portable foaming system
US3507451A (en) * 1968-08-21 1970-04-21 Oce W Johnson Spray gun nozzle
US4005825A (en) * 1974-11-20 1977-02-01 Ford Motor Company Mixing manifold for air atomizing spray apparatus
US5332157A (en) * 1990-10-01 1994-07-26 Take 5 Hand operated fluid dispenser for multiple fluids and dispenser bottle
US6164558A (en) * 1993-12-02 2000-12-26 Holt; Earl R. Recirculating paint system having an improved push to connect fluid coupling assembly
US6572029B1 (en) * 1993-12-02 2003-06-03 Illinois Tool Works Inc. Recirculating paint system having an improved push to connect fluid coupling assembly
WO1995015219A1 (en) * 1993-12-02 1995-06-08 Hose Specialties/Capri, Inc. Paint system
US5772116A (en) * 1993-12-02 1998-06-30 Holt; Earl R. Recirculating paint system having an improved spray gun
US5823438A (en) * 1993-12-02 1998-10-20 Hose Specialties/Capri, Inc. Recirculating paint system having improved fluid coupling assemblies
US5857622A (en) * 1993-12-02 1999-01-12 Holt; Earl R. Recirculating paint system having an improved spray gun
US5876775A (en) * 1994-06-14 1999-03-02 General Mills, Inc. Topical coating applying apparatus and methods
US5453383A (en) * 1994-06-14 1995-09-26 General Mills, Inc. Method of applying sugar coating by using steam assisted discharge nozzle
US5968572A (en) * 1994-06-14 1999-10-19 General Mills, Inc. Topical coating applying apparatus and methods
US6036115A (en) * 1994-06-14 2000-03-14 General Mills, Inc. Steam assisted sugar coating discharge nozzle
US5529245A (en) * 1994-06-23 1996-06-25 Insta-Foam Products Low cost dispenser for multi-component foams
US5954273A (en) * 1997-04-22 1999-09-21 Minnesota Mining And Manufacturing Company Spray assembly for high viscosity materials
US6179223B1 (en) 1999-08-16 2001-01-30 Illinois Tool Works Spray nozzle fluid regulator and restrictor combination
US7775401B2 (en) 2007-06-25 2010-08-17 S.C. Johnson & Son, Inc. Fluid delivery system for dispensing primary and secondary fluids
US20100206903A1 (en) * 2007-06-25 2010-08-19 Banco Michael J Fluid delivery system for dispensing primary and secondary fluids
US7997449B2 (en) 2007-06-25 2011-08-16 S.C. Johnson & Son, Inc. Fluid delivery system for dispensing primary and secondary fluids
US9499390B1 (en) * 2012-07-17 2016-11-22 Global Agricultural Technology And Engineering, Llc Liquid delivery system
US9192949B2 (en) 2012-08-31 2015-11-24 S.C. Johnson & Son, Inc. Fluid application system
USD743806S1 (en) 2013-12-20 2015-11-24 S.C. Johnson & Son, Inc. Combined Sprayer and Refill Bottles
USD780584S1 (en) 2013-12-20 2017-03-07 S. C. Johnson & Son, Inc. Bottle
EP3318332A1 (en) * 2016-11-04 2018-05-09 Exel Industries Pneumatic spraying assembly, restrictor for such an assembly and installation for projecting a coating product comprising such an assembly or such a restrictor
FR3058331A1 (en) * 2016-11-04 2018-05-11 Exel Ind Tire assembly showing restrictor for such an assembly and coating product spraying installation comprising such a unit or such a restrictor

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