US1784416A - Agitator - Google Patents

Description

Dec. 9, 1930. H. F. w. BROCKMANN 1,784,416

AGITATOR Filed Nov. 15, l 1926 INVENTOR ATTORNEYS Patented Dec. 9, 1930 UNITED STATES PATENT OFFICE? A HENRY F. W. BROCKMANN, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE-HALF i TO HARRY C. SCOTT, OF SAN FRANCISCO, CALIFORNIA 1 AGITATOR Application led November 15, 1926. Serial No. 148,485.

This invention relates to agitators for use in connection with the spraying of paints, bronzes, etc.

An object of my invention is the provision of an agitator operated by air pressure.

Vith the foregoing object in view, together with such other objects and advantages as may subsequently appear, this invention resides in the construction and arrangement of parts hereinafter described and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a perspective view of a paint spraying apparatus'with which is combined the device of my invention;

Figure 2 is a view, partly in section and partly in elevation, of the device of my invention;

Figure 3 is a bottom plan view of Figure 2;

Figure 4 is a plan view of a vaned-Wheel employed in my device as illustrated, and

Figure 5 isl an enlarged elevational View of a part of my invention shown on smaller scale in Figure 1.

Referring to the drawings for a more detailed description thereof, the numeral 7 indicates a spraying gun which however is no part of my invention and since the type is well known, no detailed description is nec- 30 essary.

Briefly, however, compressed air enters the gun at Qandthe resulting effect is to cause paint or other mixture to be drawn up thru the tube 12 within the jar 13 and to be eX- 35 pelled from the nozzle 14; of the gun.

The paint or other mixtures placed within the j ar or receptacle 13 settle quickly unless they are constantly stirred. An agitator must therefore be provided to keep the mix- 40 ture homogeneous in order to secure good results on a surface painted by means of the apparatus illustrated.

According to my invention, a pipe 15 is connected at 17 with the paint gun 7 so that 45 air Which'is employed to get the paint out of the jar 13 may pass thru the pipe 15. The pipe 15 is connected with a cap or cover 18, so that air coming thru this pipe will enter the inside of the cap and turn a wheel 20 shown in Figure 4 as having vanes 22. The wheel 20 rides on ball bearings 25 shown in Figure 2 and is secured by means of a nut 27, also shown in Figure 2, to the stem 28 of an agitator 29. The ball-bearings 25 are set in the bottom 30 of a member 31, which forms with the cap 18 a casing for the vaned wheel 20.

The member 30 is supported by a cover 13a of the jar 13, as clearly shown in Figure 2, while the cap 18, shown in Figure 2, is held to its cooperating member 30 by means of the pin which fits into the bayonet slot 36 of the cap 18.

The agitator 29 comprises blades 38, 39 and which at their centers practically touch the bottom of the receptacle 13 and these blades are formed at different angles whereby any matter tending to settle at thev bottom of the receptacle is successively lifted higher by each succeeding blade.

In the operation of the device, air is released thru the gun when the trigger 7a is pulled, and thru the pipe 15 when a controlable valve 17a is open. The air which passes thru the pipe 15 hits the vanes 22 of the wheel 2O whereby the agitator is rotated and this air then passes to the atmosphere thru an aperture 30a formed in the bottom 30 of the member 31.

While' I have described one embodiment of my invention, modifications thereof may be readily devised without departing from the spirit of my invention, and it is to be under stood that such modifications come within the scope of the appended claims.

I claim:

1. In a device of the type described, a propeller having a plurality of blades, one of said blades being inclined at a slight degree, andeach succeeding blade thereafter being inclined at a greater degree, whereby each blade of the propeller will move the fluid ay greater distance than the precedin blade when starting withY the blade havlng the y smallest angle.

2. An agitator comprising a rotatable shaft, an impeller mounted on said shaft, means Lfor rotating said impeller, a propeller disposed at the other end of the shaft and having a plurality of blades, each blade bein inclined at a different angle for graduleast-angle to they 'blade with the greatest angle; HENRY W. BRooKMANN. Y

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