US520766A - Spraying-machine - Google Patents

Description

(No Mdel.) A. BRYGE.

SPRAYING MAGHINE.

. Patented June 5 l NAL LmdoanAPHma coMPANY.

UNITED STATES PATENT OFFICE.

ANDREW BRYGE, OF ALLEGHENY, ASSIGNOR OF NINE-TWENTIETHS TO CHARLES A. OBRIEN, OF PITTSBURG, PENNSYLVANIA.

SPRAYlNG-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 520,766, dated June 5, 1894.

Application filed July 8,1893. Serial No. 479.907- (No model.)

To all whom it may concern..-

Be it known that I, ANDREW BEYCE, a citizen of the United States, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented or discovered a new and useful Spraying-Machine, of which the following is a specification.

In the accompanying drawings which make part of this specification, Figure 1, is a perspective of my invention when used as a sprayer of paint. Fig. 2, is a longitudinal central section through the sprayer proper with the valves controlling the liquid and vapor in elevation. Fig. 3, is a rear view of said valves; Fig. 4, a detail of one of said valves and Figs. 5 and 6, sections respectively on lines ac w, and y-y, of Fig. 2, and Fig. 7, a perspective of plug.

The purpose of my invention generally, is to devise apparatus which will spray iine dry solids, or liquids, or both, by the force of compressed vapor. One of the most obvious applications thereof is'mechanical painting where my machine takes the place of the painters brush in covering large surfaces. It is frequently desirable to mingle with'the paint, sand or other fine and dry solids and my devices make provision for this mixture.

My device can also be used as a sanding tool and a decorators device for making fancy surfaces, by projecting various solids, such as kernels of wheat, oats, dac., in connection with various hues or colors. Or by iirst spraying some adhesive substance on the surface to be covered and afterward applying the solids by my machine.

The apparatus can also be employed to inject under air or other vapor pressure, solid and liquid fuel into a furnace.

My drawings illustrate my construction in connection with a paint reservoir, but I do not intend to be confined to this specific and limited purpose, but desire to claim the same broadly for all purposes to which the apparatus is applicable.

In Fig. l, 1, is a pipe leading to an air or vapor compressor. 2 is a manifold for the division of the compressed vapor into several lines. 3, is an air connection leading from said reservoir to the paint reservoir, 4, and controlled by valves 5, and 6. Extending from said pipe 3, to a point near the bottom of the paint reservoir is pipe 7, where preferably is a small well 8. The paint reservoir itself is an air tight vessel of convenient portable size,

and filled through screwtop opening 9. In said reservoir is a float 10. Projecting above the upper surface of said float is the pipe 11, controlled by valve 12, and leading to the sprayer. The iloat is of such buoyancy that the pull of pipe 11, is just suflcient to sink same slightly beneath the paint level in the reservoir.

13, is aflexible air pipe leading from reservoir 2, to air valve of sprayer.

14, is a blank nipple on reservoir 2, to which another sprayer may be attached, if desired.

The sprayer which may be carried in the hand for many spraying purposes, as seen clearly in Fig. 2, is composed of the following parts: 15, is the exterior portion of the delivery tip. It is flared at its outer end at (L -d, and threaded at its inner end at b-b, to turn in the jam nut or holder, 16. Screwed into said holder 16, is the reducer 17, bell mouthed at both ends as shown. Said reducer 17, is externally threaded for a considerable portion of its length and upon its forward half is screwed the inner -portions 18, `of the delivery tip. 1S is internally screwthreaded as seen clearly in Fig. 7, to be longitudinally adjustable upon the forward half of the reducer 17. Commencing at vpoint c on the inner surface of said part 1S, is the swell 19, which by a curve which is seen clearly in Fig. 2, gradually rises until it leaves only a slot like opening between the outer and inner parts of the delivery tip andfor about Jtwo thirds the periphery of the discharging end of said tip. Concentric with reducer 17 and at the rear of same is the air injector 20 screwed into sleeve 21 screwed into shell 22,v

of mixing chamber 23. Upon same shell is screwed sleeve 24, into which is screwed color inj ector 25. At 26 another color injector may enter if desired.

27 ,.is the color valve and 28, the air valve, practically duplicate in constructionas seen in Fig. 4. In the enlargement 29, I drill a cavity to receive a coiled spring 30, which presses against the inner end of the valve stem 31, normally closing the passage leading to the sprayer, but by pressing on the head 32, the passage can be opened to any desired extent, or the valve can be set at any desired opening by the set screw 33, entering slot 34, on the stem.

3 5, is the pipe leading to the reservoir for sollds and 36 is the injector for solids.

The operation of the apparatus is as follows: compressed air being supplied to the reservoir 2, is led from thence to the paint reservoir. The latter may be of such size as to be swung by a strap from the Workmans shoulder, While the air reservoir may lie upon the floor or in any convenient position. The compressed air entering the paint reservoir 1n the small compartment at the corner tends to create a regular current in the same and keep the paint completely agitated. Under the pressure of the air, the paint enters the mouth of the pipe in the float and as the inlet is only slightly beneath the level of the paint some of the air also passes into the same pipe with the paint, and is carried along to the paint valve, which being opened suffi4 ciently wide by the operator admits the paint mingled to a certain extent with air, to pass into the mixing chamber. Meantime com pressed air is being supplied in suitable amount through the air injector, to the 1nixing chamber. The partial vacuum created 1n that chamber by the blast, acts by suction to draw up sand, solids or desired powdered or pulverized solids through the injector for solids and the combined matter is propelled through the reducer and velocity giver 17, and discharged at the forward end thereof into the inner portion 18, of the delivery tip, where the particles spread and following the lines of the swell 19, are delivered in an arc shaped thin stream from the mouth of the delivery tip, the atomized discharge being regulated by screwing in or ont the outer portion 15 of said tip. But I do not confine myself to the above means of regulating the discharge, as it is evident that may be done by moving longitudinally either one of the members that control the discharge. After leaving the tips, the mingled air and liquid, or solid materials, diverge in a finely atomized state in radiating lines, until they strike the surface where they are delivered and spread out upon it equally and uniformly.

By removing the inner portion 18, of the delivery tip, and cutting olf the paint supply, the apparatus may be used as a sanding machine only, and I desire to claim it as such thus makingan interchangeable painting and sanding device.

Obviously the precise outlines of the stopper 18 may be modified without departing from the principle of my invention. This construction would deliver in a complete circular slot. It is not necessary to deliver compressed air to the paint reservoir to force the paint to the sprayer, but the paint may flow down from the reservoir by gravity or be drawn down by suction bythe partial vacuum made in the mixing chamber by the air blast from the air injector. In these latter methods my invention is conspicuouslyand meritoriously distinguished from other painting apparatus which force the paint by blast through long lines of hose.

My apparatus can be very successfully used as a fuel injector to throw commingled pulverized solid fuel, oil and steam into a furnace, and the operation would be practically similar with that above described, except that the different pipes would lead to fuel reservoirs.

It will be noticed that the delivery tip, rep ducer, air injector, Iiuid injector and solid injector, are all adjustable to give the desired result under different conditions of pressure and use, and that means are provided wherebythe person who directs, or holds the sprayer proper, has entire and complete control,botl1 of the quantity of matter' to be used, aswell as the amount of force to project it, they being subject to his will in a very sensitive manner, through the automatic combined valve and stop-cock.

Having described my invention, I claim- 1. In a spraying device, the combination of a delivery tip exteriorly threaded at one end, a reducer exteriorly threaded, a mixing chamber at the rear of said reducer and a jam nut interiorly threaded at two points to receive said tip and reducer, substantially as set forth.

2. In a spraying device the combination of a delivery tip exteriorly threaded at one end; a reducer exteriorly threaded; a jam nut interiorly threaded at two points to receive said tip and reducer; a mixing chamber at the rear of said reducer and injectors for liquid, vapor and finely divided solids communicating with said chamber, substantially as set forth.

3. In a spraying device the combination of a delivery tip exteriorly threaded at one end; a reducer exteriorly threaded; a jam nut interiorly threaded at two points to receive said tip and reducer; a mixing chamber at the rear of said reducer and injectors for liquid; and vapor communicating with said chamber, substantially as set forth.

4. The combination of a delivery tip, a reducer at the rear of said tip, a mixing chamber, at the rear of said reducer, a compressed vapor injector discharging into said chamber centrally with the rear end of the reducer, and a solid injector discharging at right angles to the vapor injector, substantially as set forth.

5. The combination in a spraying machine of an exterior shell for the delivery tip and a removable inner stopper and an injector for liquids, and an injector for finely divided solids connected with a common mixing chamber behind the tip, substantially as set forth.

6. An improvement in spraying by machine power which consists in conveying compressed vapor to a sprayer; conveying liquid IOO IIO

ing from said liquid reservoir to the sprayer Io and said sprayer, substantially as described.

In testimony whereof I have hereunto set my hand this 28th day of June, A. D. 1893.

ANDREW BRYCE.

Witnesses:

WILLIAM BEAL, WILLIAM L. PIERCE.

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