US1114358A - Compression-tank. - Google Patents

Description

J. L. HOOKER. COMPRESSION TANK.

APPLICATION FILED MAR. 21. 1913 a. T 3 6 o 4. I o r w m E 1% M 6 W 1 W x n I b 0 u 5 m0 a 2' a a 0 t. m a" H m Mm J. I m u :m m m a n a a Q P m n 7 u I To all whom it may concern:

umrsn caries. f

JOSEPH L. HOOKER, OF-

Specification of Letters. Patent.

Application filed March 27,: 1918. Serial No. 757,194.:

Be it known that I, JOSEPH L. HOOKER,

citizen of the United States, residing at Anderson, in the county of Madison and State of Indiana, have invented certain new and useful Improvements in Compression- Tanks, of which the following is a specification.

This invention relates to improvements in I applying the paint.

Another object of the invention is to provide a simply constructed device which includes a receptacle for compressed air containing the paint receptacle, a tube for conducting the paint from the receptacle, and means whereby the air blast is utilized to free the conductor frgm surplus-paint or other liquid after the operation.

With these and other objects in view the,

invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claim, and in the drawings illustrative of the preferred embodiment of the invention.

Figure 1 is a sectional elevation of the improved device. Fig. 2 is a plan view with the tubes in section on the line 22 of Fig. 1.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The improved device comprises a receptacle of any suitable material, but sufficiently strong to withstand the necessary air pressure, and provided wit an outstanding rim or flange 11 to which t e closure 12 1s secured by clamp screws 13 or other similar suitable devices, and with a packing ring 14 between the closure and the rim to insure the necessary air tight connection between the closure and the tank. The tank is designed-to receive :trated eonventionall a paint receptacle, illusat 15, and resting Zupon the bottom of t e tank. Connected to ;the closure 12 are packing-devices 1617 to ireceive tubes 18-19. H The tube 18 is"ex-- tended nearly to the bottom of the casing ';10 and within the receptacle 15, and preferably bearing upon the bottom of the latter,

,an provided with notches oro enings 20 to permit the paint to freely flow into the tube. The tube 19 is the air tube-of the improved device and is provided at its upper-end with a T connection 21 having a threaded air tube coupling 22 and a check valve 23', The air tube is indicated conventionally at 24 and is coupled to the threaded connection 22 by a coupling member 25 of the usual construction. 4

The tube 18 is provided witha paint controlling valve 26 externally of the closure 12 and terminates in a\T coupling 27. Located between the T couplings -21 and 27 is a branch 28 having an air controlling valve 29 therein. Another branch 31 is con- Patna 0a. 20', 1914;

nected to the opposite end of the T member 27, and carries a flexible tube 32 which forms a conduit for the paint which is led thence to a suitable brush device, the latternot being shownas it forms no part of the present invention.

When the improved device isto be employed the closure 12 together with the attached tube-s 18-19 are removed and the receptacle l5 deposited within the tank, The

closure12. is' then replaced upon the tank with the pipe 18 extending into the receptacle '15 and terminating relatively close to the bottom of the same, and the clamp devices 13 applied to render the tank air tight. The valves 26-29 are, then closed and air pressure supplied through the tube 21, the

pressure of air displacing the valve 23 and passing thence through the tube 19 into the tank and forcing a portion of the paint into the tube 18 until it is stopped by the closed valve 26.

A suitable air gage, indicated conventionally at 33, is preferably attached to the tank to denote the pressure, and when the gage denotes the requisite pressure the air pres sure is temporarily shut off from the tube 24, the air valve being automatically closed. The, valve 26 is then slowly opened to permit'the paint to escape into the tube 32, the pressure in the tank forcing the paint through the tube 18 to the brush. As the pressure in the tank decreases the supply is replenished by opening the controllmg valve of the tube 21 and the pressure in the tank is thereafter maintained at a uniform degree until the paint is exhausted from the' receptacle 15. When this takes place the air pressure is shut off and the closure 12 again removed and a new canof paint deposited in the tank, and the operation repeated. After the painting operation is completed the valve 26 is closed and the valve 29opened to permit a blast of compressed air to flow through the hose 32 and drive out any surplus paiut which may remain therein, and thus cleanse-thewhose and brush and prevent the'lclogg-ingof the same-by dried paint.

The tank 10 andthe receptacle 15 may be of any requiredsize and capacity. The de vice is adapted for the use of any required liquid, but vWilLgenerally be employed for supplying paint to a pneumatic brush, as before stated.' By this arrangement the paint is discharged directly from the original packages or receptacles, and does not come in contact with the tank, so that the same tank and its connections may be employed for paints of various colors or shades, without the necessity for cleansing the tank. This is an important advantage and materially increases the efliciency and utility.

Particular attention is directed to the arrangement of the check valve 23 with reference to the branch pipe 28, the branch pipe 28 being interposed inand communicating with the air intake tube 19 intermediate the check valve 23 and the compression tank 10. By this construction, the air intake pipe 24 may be disconnected and the air contained within the tank 10 under compression, may be forced through the branch pipe 28 and out through the hose 32 to cleanse the hose and the brush connected thereto of any res idue of paint, the check valve 23, in this operation, preventing the escape of the air through the exterior open end of the coupling 25. It will also be noted that, in the operative position of the closure 12 upon the tank 10, the free extremity of the discharge tube 18 is disposed to rest against the bottom of the bucket 15, thus holding the bucket in-a relatively stationary position within the tank. Furthermore, in thus arranging'the discharge tube 18 to extend adjacent the bottom of the compression tank, the apparatus is capable of emptying paint buckets ofv various heights.

The improved struction, can be inexpensively manufactured and applied, and will be found very useful for the purposes described.

Having thus described the invention, what is claimed is: I

In a device of the character described, a compressed air receiver having side and bottom walls, a removable cover for the receiver, an air inlet pipe carried by the cover, a discharge pipe carried by the cover, said pipes extending downwardly into the receiver when the cover is in assembled position, a check valve interposed inthe air inlet pipe, a branch pipe communicant with both the air inlet pipe and the discharge pipe, one extremity of said branch pipe being connected with the air inlet pipe adjacent the check valve and intermediate said valve apparatus is simple in conand the cover, a valve interposed in the" tainer disposed within the air receiver and,

supported by the bottom wall thereof, said container having side and bottom walls and being arranged to receive the inner extremity of the discharge pipe in the operative position of the cover upon the receiver, theterminal of said discharge pipe being disposed to bear against the bottom wall of the container. i

In testimony whereof I affix my signature in presence of two witnesses:

JOSEPH L. HOOKER.

Images