US2224741A - Paint spraying apparatus - Google Patents

Description

Dec. 10, 1940. s. METRICK ET AL PAINT SPRAYING APPARATUS Filed Sept. 15, 1938 INVENTORS, Salom on Merzc/c, BY Jco o sen,

ATTO NEY Patented Dec. 10, 1940 PATENT OFFICE PAINT sPRAYING APPARATUS Solomon Metrick and Jacob J. Rosen, Brooklyn, N. Y.

Application September 15, 1938, Serial No. 229,986

1 Claim.

This invention relates to an apparatus for therewith spraying paint or other materials, such as lacquer or enamel, for applying ya coating of the material upon any required surfaces.

5 The principal object of the invention is to provide an apparatus for the above purpose which will be simplied, efficient, strong, durable, conveniently and economically manufacturable, reliable, and improved.

l Another object is to provide such apparatus with eiicient and improved means for effecting a thorough admixture of the substances comprising the coating material prior to and in the course of its -application upon the work.

l Other objects and advantages will hereinafter appear.

In the accompanying drawing- Fig. 1 is a general cross-sectional elevational view of the paint spraying and applying apparatus of the invention.

Fig. 2 is a bottom plan viewv showing a .detail of the apparatus. f

'I'he apparatus I is equipped with an upright cylindrical tank 2,'servingv as a receptacle for the compound liquid 3 which may consist of paint, lacquer, or enamel, or any other coating material. 'In the roof-wall 4 of tank 2 is provided a tapped opening 5, in which is threaded a. tting 6 having a tapped bore I in which is in turn threaded a pipe 8 that projects downwardly therefrom toward and to the floor 9 of the tank. The terminal of pipe 8 has secured thereto, by a thread I0, a flange II which abuts against the floor 9 and its abutting face I2 is provided with a series of curved radiating channels I3, as illustrated in Fig. 2, that lead from the bore of the pipe 8 irito the liquid contents of the tank 2. threaded into the tting 6 as shown and its opposite end carries a coupling I5, to which is joined a hose I6 that leads to and connects with the liquid inlet I'I of a usual paint spraying gun I8. A valve I9 has one end thereof threaded into the :fitting I4 and its opposite end carries a coupling 2 0, to which is joined a hose 2| leading to the outlet 22 of an air compressor 23. To an outlet 24 of said compressor is joined a hose 25 that leads to and vconnects with the air inlet 26 oi' gun I8.

When commencing operation with this appa- One end of a -r-ntting u isv ratus, the liquid-filled tank 2 and fitting I4 are fastened to each other, and the valve I9 is then opened. This directs the compressed air through the pipe 8 and forces it outwardly therefrom through the curved radial series of chan- 5 nels I3 of the device II, which action causes the compressed air to emanate in a gyrating motion, which it in turn imparts to the liquid contents 3, and also in an upward and downward agitation of the liquid mass in the manner indicated 10 by the arrows. As a consequence of the said motion and agitation of the liquid, its components become thoroughly admixed and the material is rendered uniform and eiicient forproper spraying and application. After an interval 15 of thus forcing the compressed air into the tank 2 the Valve I9 is closed, and the enhanced air pressure within the tank then siphons the liquid through channels I3, upwardly through pipe 8, and through the hose I6 to the gun I8, with 20 which the material may be sprayed and applied in the usual manner. During its feed the liquid is additionally agitated and further admixed to uniform consistency by its passage through the plurality of the curved radial channels I3 toward 25 and into the pipe 8. A pressure gauge 21 connected to the tank 2 in its roof 4 serves to indicate at all times the extent of the air pressure existing within the tank.

Variations may be resorted to within the scope 30 of the invention, and portions of the improvements may be used without others.

Having thus described our invention, we claim:

A paint spraying apparatus having the combination of a closed receptacle for the painting 35 liquid, a pipe leading from the upper part of the receptacle to the bottom of the receptacle, a paint spraying gun, a compressed air source, a pipe leading from said rst pipe to said gun, a pipe leading from said rst pipe to said source, 40 and a valve in said third pipe, whereby opening said valve will admit compressed air to said receptacle through' said i'lrst pipe to agitatingly intermix the painting liquid and closing said valve will causec the compressed air in the re- 45 ceptacle to feed the admixed painting liquid through said first and second pipes to said gun.

SOLOMON METRICK. JACOB J. ROSEN. 5o

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