US1945298A - Air brush or paint spray device - Google Patents

Description

Jan. 30, 1934. J SCHMIDT I 1,945,298

AIR BRUSH OR PAINT SPRAY DEVICE Filed Sept. 21, 1931 mgm ATTORNEY$ Patented Jan. 30, 1934 UNITED STATES PATENT OFFICE Application September 21, 1931 Serial No. 564,159

Claims. (Cl. 91-45) The present invention relates to an improved air brush or paint spray device especially adapted for atomizing or spraying paint on the surfaces of houses, or any other surface on which paint is to be applied, and the essential purpose of the invention is to more equally and evenly distribute the paint over a wide area giving a more uniform tone.

Another purpose is to simplify, improve and render more practical the combined spray and paint brush embodied in the United States Letters Patent to John G. Schmidt patented June 24, 1924, Patent No. 1,498,759, the essential reason for improving this patent involves in particular an air brush or spray device head, which comprises a plurality of separable sections, which allows the device or air brush to be more easily and conveniently cleaned, by disassembling the device and depositing theseveral separable 0 sections in a cleaning fluid, such as gasoline,

turpentine or the like, whichwill tend to soften and eat away or remove the paint from the interior surfaces of the various sections, such paint when softened and loosened can be easily scrubbed 01f bygasoline, turpentine or the like. In this manner the several sections of the device can be very easily and quickly cleaned, enabling the device to be used from one color or shade to another, thereby especially saving time and a 0 great deal of labor, which is a substantial and very inconvenient annoyance involved in the above mentioned United States Patent.

Another purpose is to provide an air brush or spray device, which is a further improvement 5 over the above mentioned United States Letters Patent, in that this present invention eliminates the use of bristle brushes which are shown and claimed in said herein identified patent, thereby simplifying and avoiding the combination between the bristle brushes and the spraying construction of the device.

A further purpose is to provide in an article of this kind an air brush or spray device consisting of a plurality of separable sections, which permit very quick and easy access to the paint reservoir or chamber, as well as a very quick and easy access to the air chamber or reservoir, so that such reservoirs may be ,easily and very quickly cleaned.

A still further purpose is to provide, in an article of manufacture of this kind, a screen overlying the paint reservoir or chamber, the screen being vulcanized or otherwise fastened to a suitable washer between the section carrying the spray nozzles and the paint reservoir section, the

of Figure 1.

reception of the locking screws 8,

screen acting to prevent foreign matter from entering the nozzles with the paint and thereby avoiding obstructing the passages through the nozzles.

It is also the purpose of the present invention to provide improved means for locating orfastening the several sections together, in conjunction with means to retain the sections in register. 7

It is to be understood that the particulars'herein given are in no way limitative, and that while Q still keeping within the scope of the invention, any desired modification of details and proportions may be made, in the construction of the appliance'accordingto circumstances; The invention comprises further features and 7Q combination of parts to be hereinafter set forth, shown in the drawing and claimed:

. In the drawing: V

Figure 1 is a view in elevation of the improved air brush or supply device constructed in accord ance of the invention. 7 t Figure 2 isa longitudinal sectional view through the head showing the several sections, and illustrating the paint or other fluid and air pipes connected to the head, with valves for controlling the fluid and the air with operating means connected to the valves.

Figure 3 is a cross sectional view on line 3-3 Referring more especially to the drawing, 1 ,85 identifies the improved air brush'or spray device head,'which comprises the air reservoir section 2, the paint reservoir section 3, and the intermediate nozzle section 4. 7 7

It is obvious that the air brush or spray device may be of any size, or any shape, and constructed of any suitable metal, in the present instance preferably aluminum. 7' I The air reservoir section 2 has an air chamber 5, which: may be any depth and of any length according to the length of and the number of spray nozzles. The section 2 adjacent its marginal edge is provided with a plurality of slots 6 having adjoining lugs 7 suitably spaced for the which are pivoted at 9 between the lugs. The screws when the several sections are put together engage in slots 10 and 11 formed in the marginal edges of the intermediate section 4 and the paint reservoir section 3, the screws having nuts which are adjusted to bear against the surface of the reservoir section 3 to hold the several sections closely 7 of any foreign matter or particles prior to passthrough the paint reservoir,

which may -or may ing through a plurality of nozzles 16. The paint or other material first enters a chamber or reservoir 1'7, and is insures a fluid tight joint between-the intermediate section and the reservoir section.

The air reservoir section 2 has an air chamber or reservoir 5 through which the several nozzles 16 pass, said nozzles having tapered ends 19, which enter depressions 20 (which are similarly sions, which are threaded into "the intermediate section, the reduced extensions being identified 'by the numeral 22.

A suitable tube 23 is threaded through the wall of the paint reservoir section 'andzsufli'ciently in order to thread at into the intermediate section, there :being a lock nut 25 to secure the tube 23 in place. This tube 23 connects by means :of a suitable hose 26 to a source of air supply not shown, to inject air under pressure in the air reservo'r 5. The tube "23 passes through a handle 27 and is provided with a valve 128 and operating means .29 therefor, for controlling the supply of :air.

A tube or pipe 30 is threaded into the wall of the paint reservoir section 3 for feeding paint 'or' 'ot-her into "the reservoir 1'7, a lock nut 31 carried =byithe tube '30 to insure retaining it to the section '3. The tube 30 has .a suitable valve 32 provided with controlling and operating means 33 for regulatingthe supply @of paint,

not be under pressure. Howeverithe air fed to the air reservoir is at :all times under pressure, and it is obvious any number of pounds of air pressure may be used it depending entirely on -the size of the air brush :or :spray nozzle, and the amo t of paint or other fluid required "in covering various'surfacesl It is obvious that when this air brush :or spray device is used -'on the outside there may be .at times more or less air "currents, tending to :scatter the spray, which would'cause an uneven distribution of and ,loss of material. In this case and to avoid this loss itis the aim to provide guards -'0r shields 34, which may be constructed of any suitable material, preferably rubber -or leather, though not necessarily, for the reason 'th'atthe'guards may be in the form of brushes. ht'any rate such devices are to shield the spray against air currents, and thereby insure applying the materialdirect =to=the surface to becovered without loss; As an example of one means of then screened OllfiStl'QiIlfid by section and an intermediate section,

the straining element, the rubber washerof which attaching the guards, though not as a necessity, the guards are fastened between the air reservoir and the intermediate section as identified at 35.

While it is in most cases unnecessary to use such wind shields the above attaching means enabling easy attachment is provided. The use of these wind guards is entirely optional with the person using the spray and does not affect the advantages claimed for the spraying device itself.

The invention having claimed is:

v1. In an .air brush prising a fluid reservoir section, an

been set forth, what is or spray device, a head comair reservoir said fluid being assembled in relation fornfi-ng reservoirs for fluid and air and provided with bottoms, a plurality of nozzles carried by the intermediate section and passing through the air reservoir and provided with tapered ends, the bottom of the air reservoir having tapered "outlets, in which the tapered ends of the nozzles are spaced, the nozzles communicating with the fluid reservoir, means carried Lby'the fluid reservoirsection and passing through the other two sections for holding all three sections in register, and means carried :by the air reservoir section and cooperating with the other two sections for locking the sections in register, and means for supplying the respective reservoirs with fluid and air, whereby the fluid may be sprayed or atomized upon a surface to be covered.

.2. An air brush or spray device comprising a head consisting of a plurality of separable sections, two I outer sections and an intermediate :section, one of the outer sections being in assembled relation to form an'air reservoir, the other outer section having a fluid reservoir, said air reservoir having a bottom provided withtapered outlets, the intermediate section having a plurality :of outlet :nozzles communicating with the fluid reservoir and having ends spaced within the tapered outlets, and means for separably connecting the several sections whereby they maybe and. air reservoir sections 'eas'ily disassembled :for cleaning purposes, means connected to the fluid reservoir section and pass- :ing through said fluid reservoir and threaded into the intermediatesection and communicating with the air reservoir tosupply air under pressure thereto, and means connected to the fluid reservoir :section and communicating with its reservoir for supplying fluid thereto, said air and fluid supplying means comprising tubes, a handle jointly .connecting the two tubes, and means associated with the tubes for controlling the supply of air and fluid.

3. air brush. or spray device comprising a head consisting of a plurality of separable sections, two outer sections and an intermediate section, bled relation to form an air reservoir, the "other :outer section having a fluid reservoir, said air reservoir having a bottom having tapered outlets, the intermediate section having a plurality of outlet nozzles communicating with the fluid reservoir and having ends spaced within the tapered outlets, and means for separably connecting the several sections whereby they :may be easily disassembled for cleaning purposes,

one of the outer sections :being in assemwashers between the several sections to insure 145 head consisting of a plurality of separable sec-T50 tions, two outer sections and an intermediate section, one of the outer sections being in assembled relation to form an air reservoir, the other outer section having a fluid reservoir, said air reservoir having a bottom having tapered outlets, the intermediate section having a plurality of outlet nozzles communicating with the fluid reservoir and having ends spaced within the tapered outlets, and means for separably connecting the several sections whereby they may be easily disassembled for cleaning purposes, washers between the several sections to insure air and fluid tight joints therebetween, the washer between the fluid reservoir and the intermediate section carrying a straining element, and means carried by the fluid reservoir section and engaged through the intermediate section and into the air reservoir section, for holding the several sections in register while the connecting means between the several sections are being adjusted.

5. An air brush or spray device comprising a head consisting of a plurality of separable sections, two outer sections and an intermediate secof outlet nozzles communicating with the fluid reservoir and having ends spaced within the tapered outlets, and means for separably connecting the several sections whereby they may be easily disassembled for cleaning purposes, means connected to the fluid reservoir section and passing through said fluid reservoir and-threaded to the intermediate section and communicating with the air reservoir to supply air under pressure thereto, and means connected to the fluid reservoir section and communicating with its reservoir for supplying fluid thereto, washersbetween the several sections to insure air and fluid tight joints therebetween, the washer between the fluid reservoir and the intermediate section carrying a straining element.

JOHN G. SCHMIDT.

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