US2029141A - Device for spraying - Google Patents

Description

jam 28, 136 E 5 NE ZfiZQfli-i DEVICE FOR SPRAYING Filed June 11, 1934 2 Sheets$heet l INVENTOR,

c ATTORNEY.

Jan, 28, 1935. E. S. \NARNER ZJQZQJ H DEVICE FOR SPRAYING Filedv June 11, 1934 2 Sheets-Sheet 2 INVENTOI;

Karl J It kiwi;

ATTORNEY.

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DEVICE FOR SPEAYZZING oi Massachusetts Application June 11, 1934,

(Cl. see -es) 8 manna.

This invention relates to improvements in devices for spraying liquid wax, or similar preparations for oiling, or waxing floors, or other surfaces. 4

An object of the present invention is to provide a construction in which the liquid wax is evenly distributed, in a finely divided spray effect on the floor, as the operator moves the spraying nozzle of the device from one side of the room to the other.

At the present time, the waxlike preparations now in use, are so prepared that they will dry quickly and leave a finished and polished surface.

The invention, broadly, comprises a delivery nozzle for the liquid wax, which is preferably formed with a rectangular-shaped opening from which the liquid wax escapes, as a solid. ribbon stream. This nozzle is located a short distance from-the spray delivery end of the combined mixture of air and wax, and. is connected to a pipe that conveys the oil, or liquid wax, from a suitable receptacle. Means is provided for forcing air, under pressure, past the exist end of the rectangular-shaped nozzle carrying the liquid wax, and for simultaneously imparting a rotary motion to the air. The mixture of the air and the liquid wax is thus evenly spread onto the floor, or other surface, by the operator, without leaving any spots that are uncovered.

As a modification, the receptacle, which contains the liquid wax, may be removed from the nozzle end of the device and the liquid drawn by suction effect, from a container that is located on the floor, or other support.

Further objects and nature of my invention will appear in the body of the specification and will be particularly pointed out in the claims.

An important feature of my invention is the rectangular-shaped nozzle for the liquid wax.

Referring to the drawings:-

Fig. 1 shows the complete outfit comprising an electric motor, a fan for producing the desired air pressure, a receptacle in which the liquid wax is stored, with a pipe extending therefrom, which is located adjacent the delivery spray nozzle end.

Fig. 2 is a detail view, showing a receptacle con taining the liquid wax, that is detachably connected adjacent the spraying nozzle.

Fig. 3 is an enlarged; detail, sectional view of the interior construction of the spraying nozzle, showing the means for imparting a rotary motion to the air, under pressure; also illustrating the means for attaching a jar containing the spraying material to the spraying nozzle.

Fig. 4 is an end view of the wax delivery nozzle,

illustrating the rectangular-shaped opening in its end through which the liquid was passes.

Fig. 5 is a sectional view on the line 5- 5 of Fig. 3, looking in the direction oi the arrows.

Fig. is a sectional view on the Fig. 3, looking in the direction of the arrows, showing the curved blades.

Fig. 7 is a detail view of the end of the delivery nozzle for the liquid wax, or other material, li lustrating the rectangular-shaped opening.

Fig. 3 is a longitudinal, sectional view of a modification, in which the pipe that conveys the liquid wax is located the spraying nozzle.

Fig. 9 is a modification in which the helical blades are made shorter and located adjacent the end of the cone-shaped delivery spraying nozzle member.

Fig. ii) is a sectional view on the line iii-it of Fig. 9, showing the four (4) helical-shaped blades and the pipe conveying the wax in section, and

11 illustrates the action of the circular currents of air on the rihhonlike ierrnatlon of the waxlilre substance.

Referring to the drawings detail:---

1% designates a tubular or pipe member having a conicahshaped spraying end portion The member l serves as a handle, when in use. A hose member 3 is connected at one end of the tubular member Toy means of a clamp 73; its opposits end is attaches to the fan casing carrying a fan that is operated by the electric motor 5, or other means. 6 designates a suitable receptacle, in which the liquid wax, or other material to be sprayed, is placed. Attached to its lower end, is a flexible delivery tube i, that is controlled by the valve Tins tube is attached to the tubular preacher i, means of the clips Q and iii.

The interior construction of the conical shaped spraying end portion 2 is shown in Fig. 3, in which are located the three (3) curved, or helicalshaped members ll, 62 and 53. ll one are retained in the conical-shaped member 2, by means of the ring members 68 and it, which are inserted in the member 2 and retained by the bent portion 2'.

It will be noticed that the members ii, iii, and iii are made long, for the purpose of per tting the free passage of air, under pressure, through the conical-shaped spray member 2 and for imparting a rotary, or circular motion, to the air, as it leaves the orifice i5. Located within the member 2, is a tubular member H5, in the outer end of which is secured the liquid wax delivery nozzle member it. The tubular member it is located in the spider ring member it, which is secured in the conical member 2 and provides the air spaces ill. The member i6 is provided with an opening 26, which leads to the passageway 2i of the tubular member 22, which is attached to the pipe 23, that extends downward into the liquid wax, indicated at 2 1, in the jar 25. This jar is formed with a thread at its upper end, whereby it may be attached and removed from the threaded member 26, that is attached to the conical-shaped spray member 2. 2i designates openings through the members 2 and 26, whereby air, under pressure from the member 2, will enter the upper end of the jar 25, as indicated by the arrow, and force the liquid wax up the tube 23, through the nozzle ll.

Referring to Fig. 1, it will be noticed that the jar is omitted and the tubular member 7,

which carries the liquid-wax from the receptacle b to the interior of the nozzle portion 2, is connected to the pipe member 22. it indicates an air inlet opening to the interior of the jar 25. The operation of the apparatus, as shown in Fig. l, is as follows:-The air from the fan t passing through the tubular member l, under pressure, will produce a vacuum effect at the open end of the conical-shaped spray member 2. This: will cause the liquid wax to be drawn through. the pipe 71' and escape through the rectangular-shaped nozzle ll in ribbon shape, where it will come into direct contact with the rotary motion of the air, under pressure, whereby the ribbon of liquid wax will be intimately mixed with the air, as shown by the arrows 29, and a finely divided spray eifect will be produced.

In the construction, shown in Fig. 2, and also in Fig. 3, in which the receptacle t is omitted and the jar 25 is threaded onto the member 25, the air, under pressure, will enter the jar through the opening 2? and create a pressure on top of the liquid war 25, forcing it upward through the pipe 23 and out through the rectangular-shaped nozzle ll, whereby it will be thoroughly mixed with the air from the blower fan for spraying the floor in an even and uniform manner, which is very important.

It will be noticed that the end of the nozzle ll is made rectangular in shape, as indicated by the numeral 36. It has been found, from actual experience, that this nozzle opening must be made rectangular for efi'icient operation, in order to obtain the best spraying results, and that the width of the nozzle opening should be between ten and forty thousandths (.010 and .040) of an inch.

Referring to Fig. 8, in which the interior construction of the conical, tubular, spray member 2 is constructed to receive the pipe 3!, through which the liquid wax from the tubular member l passes to the nozzle member ll, in this construction, the rotary air, under pressure, from the fan t passes through the conical-shaped member 2, where it meets the liquid wax from the delivery end of the nozzle ll, at the point 32. The pipe 36, it will be noticed, is formed as an integral part of the helical blades ii, iii and i3, and in this construction, the blades are attached to the ring members 335 and (i l, permitting the pipe 3! and the blades to be inserted and removed as a unit. 35 is also a ring member, in which the pipe 36 is located.

Referring to Fig. 9, in which the tubular, or pipe member ill, has one end threaded for attachment to the tubular portion 33, which tubular portion is formed as a part of the helical blades 39, ill, ll and '52, these blades, it will be noticed, are made much shorter and serve to impart a aoaaiei rotary motion to the air, under pressure, through the conical member 2. The opposite end of the pipe ii is located in the ring, or spider member at, to which the pipe M is connected that conveys the liquid Wax.

Fig. 5 shows a modification, in which the tubular member 28 opens into the jar 25. 27 indicates an opening which communicates with the interior of the jar 25. When the device is in operation, the user places his finger, or thumb, over the tubular member 28. This creates a pressure in the jar 25 and forces the liquid wax from the jar to the nozzle ll, as described. When the finger is removed, the atmospheric air enters the jar, thus destroying the pressure and stopping the operation of the spraying device. The operator, can, therefore, by merely shutting oil, or admitting the entrance of air into the jar 25, control the operation of the device, when in use.

Fig. 6 illustrates a hook ll to receive the rubber tubing l, which supplies liquid wax, when the jar 25 is not used.

The nozzle ll, it is to be understood, is made in difierent sizes, as shown in Figs. 3, 8, and 9, and located near to, or away from the openings l5 and 32. It may be inserted and removed from the part 38, or tube 3i, with a sliding fit.

Referring to Fig. 11, which shows a section #38 of the ribbonlike liquid Wax, as it leaves the rectangular-shaped opening 3@ of the nozzle member ll, which is moving in the direction of the arrow $9; the circular currents of air, as they leave the openings is or 32, are indicated by the arrows 5t. These air currents as shown, will strike the opposite and fiat sides of the ribbonlike substance and break it up into finely divided particles.

What I claim ls:--

l. A spraying device of the kind described comprising, a tubular member having a conical shaped end portion with an exit opening in the apex thereof, means for forcing air under pressure through the said member, means for imparting circular motion to the air in its passage through the member, means for supplying a liquid waxlike substance near the open end of the tubular member, and means for producing a long, narrow rectangular-shaped formation to the waxlike substance as it leaves the supply means adjacent said open end of the tubular member, whereby the combined effect of the circular currents of air and the long, narrow and rectangularshaped stream of liquid waxlike substance will produce a finely divided spray effect of the waxlike substance and the air, as described.

2. In a spraying apparatus for the purpose described, a tubular member formed with a contracted circular opening in one end, means for forcing air through the member, means in the said member for imparting a circular motion to the air as it leaves the contracted circular opening, means for delivering a liquid waxlike substance to the contracted circular opening and in a ribbonlike formation, whereby the circular currents of air, as they come in contact with the ribbonlike formation of the liquid waxlike substance, will break up said substance into finely divided particles.

3. In a spraying apparatus, a tubular member substance to the interior or the tubular member and adjacent the exit opening, in e ribhonliire formation.

4. In s spraying apparatus, a tubular member having an exit opening axially disposed in an end thereof, means for forcing air through the same, means for imparting circular motion to the uir as it leaves the opening, means for detachably seeming a receptacle containing the substance to be sprayed to the tubular member, means for conveying the said substance to a location in the interior of the tubular member adjacent the exit opening and centrally disposed reletive thereto, in a ribbonlike formation, and air vent means for controlling the delivery of the said substance.

5. A liquid spraying apparatus comprising, in combination, a tubular member having a circular exit opening axially disposed in an end thereof, means for forcing air under pressure through the exit opening, means adjacent the exit opening for importing rotary motion to the air as it leaves the opening, a long, narrow nozzle having s, rectangular-shaped opening located on the axis of said tubular member between the exit opening and the means for imparting circular motion to the sir, and means located in the tubular member for conveying the substance to be sprayed to the nozzle.

6. A spraying apparatus having in combination, is tubular member with a reducing taper-shaped exit end portion formed with a circular exit opening in the extreme end thereof, a plurality of helically-shaped members in the taper-shaped portion, a receptacle containing the substance to be sprayed and secured to the taper-shaped portion, menus for conveying the sold substance to the exit opening, e. removeole nozzle having e. long, nerrow opening through which said substance is conveyed to the and. exit op-enL means for forcing air through the tubular member end communicating means between the taper-shaped portion and the interior of the receptacle.

7. A spraying apparatus for the purpose described, comprising in combination, e. tubular member having a tapered end portion reducing in diameter to a. rounded snout portion, said portion being provided with a circular opening, means for forcing air through said tubular memher, a tapered member in said end portion formed with a plurality of spiral fins for imparting a circular movement to the air when forced through said tapered end portion, said tapered mernioer having an axial bore therein, n nozzle removebly secured in said axial bore and provided with a long, narrow, slotlike discharge opening, said discharge opening being edjustably located adjacent the plane of said circular opening and on the same axis, and means for forcing a liquid through said axial core for discharge through sold nozzle.

8. The method of atomizing a. liquid substance to be sprayed which consists in forcing air under pressure through a tapered nozzle reducing in diameter and terminating in a circular opening and provided with means for importing a. rotary motion to the formed cylinder of air and simultaneously projecting a liquid substance to be sprayed in a ribbonlilre stream in the axis of the revolving cylindrical stream of air and in the direction of flow of the air.

EARL E5. WARNER.

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