US675840A - Air-brush. - Google Patents

Description

Patantad June 4, mm. C. PHILLIPS.

AIR BRUSH.

(Appliention filed Oct. 10, 1900.

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VII/III 8 Witnesses.

Attorney.

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UNITED STATES PATENT OFFICE.

COLUMBUS PHILLIPS, OF MERIDIAN, MISSISSIPPI, ASSIGNOR OF ONE-HALF TO JAMES E. MINOR, OF NEW HAVEN, CONNECTICUT.

AIR-BRUSH.

SPECIFICATION forming part of Letters Patent No. 675,840, dated June 4, 1901. Application filed October 10, 1900. Serial No. 32,568. (No model) To all 1072 0112, it may concern.-

Be it known that I, COLUMBUS PHILLIPS, a citizen of the United States, residing at Meridian, in the county of Lauderdale and State of Mississippi, have invented certain new and useful Improvements in Paint-Spraying Nozzles, of which the following is a specification, reference being had therein to the accompanying drawing.

IO My invention relates to improvements in paint-spraying nozzles, which are commonly known as automatic painting-machines.

It is the object of my invention, among other things, to provide a simple and inexpensive device for distributing paint upon extended surfaces-such as walls of buildings, cars, &c.that will greatly reduce the time necessary to perform the work and will also distribute the paint with a uniform thickness over the whole surface, and, further, to provide means connected with such a device whereby the quantity of paint which passes through the nozzle can be varied.

To these and other ends myinvention consists in a paint-spraying nozzle having certain details of construction and combination of parts, as will be hereinafter described, and more particularly pointed out in the claims.

Referring to the drawing, which shows a longitudinal sectional elevation of my improved nozzle, the numeral 1 designates the body member, which is cylindrical in form and has a bore 2 throughout its whole length; 3, a socket preferably integral with the body member, within which is inserted a handle 4,

which is used to elevate the device; 5, an airinlet pipe, which is threaded within the body member; 6, a pipe threaded to a cap 7, screwed into a boss 8 upon the body member, the said cap 7 having a recess in its upper end whereby a paint-chamber 0 is formed between the said cap and the body member. Movably mounted within the bore 2 is a dischargenozzle 10, having threaded into its rear end 5 an air-nozzle 11, with a head portion 12 of substantially the same diameter as the bore 2. Through the shell of the discharge-nozzle 10 are a plurality of port-holes 13,0f substantially the same size and shape as the port-holes 14 through the shell of the body member 1, which port-holes when they register with each other connect the chamber 9 with the interior of the discharge-nozzle 10. A longitudinal movement of the discharge-nozzle within the body member is obtained by means of the connection-block 15, which is pivotally secured to the rear end of the nozzle by the pintle 16, and a stem 17, having a head portion 18, the said stem being secured to the connectionblock 15 by means of the nut 19, which is threaded into the said connection block. Closing the rear end of the bore 2 in the body member 1 is a cap 20, through which the stem 17 is threaded, a gland 21, containing suitable packing, as 23, threaded upon the boss 22, preventing the escape of air or paint through the rear end of the body member. The stem 17 is rotated by means of a button 24, which is threaded upon said stem and locked thereon by the jam-nut 25.

The movement of the discharge-nozzle 10 is limited in either direction by a stop 26, which is threaded through the said body member and projects into a groove 27 in the exterior of the nozzle 10. The pipes 5 and 6 are connected, preferably, with flexible hose 28 by any preferred means common to the art, which connect said device with a conveniently-located source of air and paint supply.

In operating the device the air-supply enters the bore 2 of the body member 1 through the air-pipe 5, filling the chamber therein and escaping through the air-nozzle 11, where it creates a partial vacu um in the interior of the nozzle 10, which causes the paint to be drawn through the pipe 0 into the paint-chamber 9 and through the ports 14 and 13 into the interior of the nozzle 10, where it joins with the air and then passes through the mouth of the discharge-nozzle and is thrown in the form of a spray upon the surface against which it is directed. To vary the quantity of paint, the position of the discharge-nozzle 101s adjusted so as to cover or uncover a greater or less area of the ports 11, which adjustment is obtained by rotating the stem 17 through the button 21. It is apparent that the fullest and largest quantity of paint possible is obtained when the ports 13 are in register with the ports 14, as shown, and by shifting the discharge-noz- I00 zle 1O endwise within the body member 1 a portion of the ports 14: are covered, which thereby reduces the area thereof and as a consequence decreases the amount of paint that can be passed therethrough.

This device can be used for an air-duster by simply disconnecting the paint connections.

There are minor changes and alterations that can be made within my invention, and I would therefore have it understood that I do not limit myself to the exact construction herein shown and described, but claim all that falls fairly within the spirit and scope of my invention.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a device of the character described, the combination with the body member having separate inlet-openings for the admission of air and paint, respectively; of an adjustable discharge-nozzle within said body member having valve-ports therethrough of similar form to the paint-inlet openings and adapted to register therewith, to regulate the flow of paint; of an air-nozzle within said discharge-nozzle and movable therewith; and threaded means rotatably secured to said nozzles for moving the same within the said body member.

2. In a device of the character described, the combination with the body member I having an opening therethrough for the admission of air and inlet-openings 14 for the admission of paint; of a discharge-nozzle 10 within said body member having valve-ports 13 th'erethrough similar in form to the said inletopenings ll and adapted to register therewith by an adjustment of the dischargenozzle 10; nozzle 11 fixed to said dischargenozzle; stem 17 rotatably connected with said nozzle; and a cap 20 secured to and closing the open end of said body member and through which the said stem is threaded.

3. In a device of the character described, the combination with the body member I having the inlet-openings 1i therethrough; of the discharge-nozzle 10 having valve-ports 13 therethrough of similar form to said inletopenings; air nozzle 11 fixed to said discharge-nozzle; stem 17 rotatably connected with said nozzles; cap 20 closing one end of said body member; and a cap 7 secured to said body member and covering the said inletopenings H so as to leave a chamber between the said cap and the said body member, substantially as described.

In testimony whereof I aftix my signature in presence of two witnesses.

COLUMBUS PHILLIPS.

Witnesses:

L. 1;. FERGUSON, Rrcno. G. P. Mv'r'rox.

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