US2084621A - Spraying device - Google Patents

Description

E. O. NORRIS SPRAYING DEVICE June 22, 193.7.

2 Sheets- Sheet 1 Filed Sept. 5, 1950 EDwHRn UNUEHIE.

11v V'ENTOK ATTORNEY I June. 22, 1937. E. o. NORRIS SPRAYING DEVICE Filed'Sept. s, 1930 2 Sheets-Sheet 2 A m mm: mm

PAINT EDWHRD HNURRIE.

INVENTOR A T TOR/v5 y Patented June 22, (1937 PATENT OFFICE srasrmc DEVICE Edward 0. Norris, Greenwich, 0111111., assignor m The Norris Painting Machinery Corporation, Inc., New York, N. Y., a corporation of New York Application September 5, 1930, Serial No. 479,900

22 Claims.

This invention relates to apparatus for spraying liquids and particularly for spraying such liquids as paints, lacquers, stains and varnishes.

In g'eneral it is an object of the invention to provide a device of the character described, which is simple of construction, economical to manufacture, which can be expeditiously, safely and conveniently manipulated, and which will efllciently perform the purposes for which it'is intended.

. A'further object of this invention is to 1110 vide a sprayingv device wherein the fluid to be sprayed is controlled so that the fluid leaves on tangential planes through an opening adjustable by means of slides circularly arranged. I

A further object of this invention is to provide a spraying device having a conical rotatable distributor and a plurality of feeding nozzles of various diameter, any one of which may be used in supplying the fluid against the inner surface of the conical distributor and in projecting the fluid in the direction of rotation of the distributor.

A further object of this invention is to provide a spraying device with adjustable guides so thatlnarrow stripes can 'be sprayed without difficulty.

A further object of this invention is to provid a spraying device wherein the fluid is supplied to a conical distributor which is kept under vac-v uum through centrifugal force and kept sealed by means of washers or fan action or both;

A further object of this invention is to provide a spraying device whereby the entire spray elected falls onto a surface which is to be treated Other objects of the invention will in part be obvious and will in part appear hereinafter.

To these and other ends, the invention consists.

in certain improvements and combinations and 50 arrangements of parts all as will be hereinafter more, fully described, the novel features being pointed out particularly in the claims at the end of the specification.

For a fuller understanding of the nature 55 and obiects of the invention reference should be had to the following detailed description taken in connection with the accompanying drawings, which illustrate a practical embodiment of my present invention, and in which the same reference numerals indicate similar parts in the different figures.

Figure 1 is a side view of the device. Figure 2 is a view partly in section of the device with movable gate closed. 1

Figure 3 is a view taken on 33 of Figure 2.

Figure 4 is adetail of the nozzles.

Figure 5 is a view taken on 5-5 of Figure 2.

Figure 6 is an end view of the device.

Figure 7 is a diagrammatic view showing the variable areas covered on openingof shutter.

Figure 8 is a digrammatic view showing flow of fluid to slots.

Figure 9 is a view of the fan.

Figure 10 is a detail of the valve structure.-

.The centrifugal ejectment of liquid has a variety of advantages over the use of air guns for many purposes. Among these advantages are the avoidance of condensed moisture in the shot, when non-aqueous liquids are sprayed, and

a marked lessening of the tendency for mist-like particles of the liquid to wander in undesired directions. Indeed, the presence of air is disadvantageous from a number of standpoints.

' certain harmful effects and that the absence of air may be beneficial: If a paint, for example. is applied without an air blast, the amount of the constituent which acts as a carrier for the other constituents may be reduced. A portion of the cost of the oil may be eliminated. The other elements are found to deposit themselves upon the surface with greater force and smoothness, necessitating less of the temporary adhesive element.

Furthermore, with no added-air inthe paint stream, or spray, there is less chance for air blisters to be formed on the painted surface. The absence of added air also does away with paint mist which spoils the sharp edge of an The portion I! is provided at its center with a bowl-shaped hollow portion is, having an upstanding plate or rim M. The end of the bowl terminates in a threaded opening it.

The portion i2 may also-be provided with a hollow stem It which functions as a handle for the casing and as a reservoir in a manner which will be explained later.

The portion Ii encloses a revolving coneshaped distributor ll which may be attached to a disc I. by means of bolts is. The disc I8, is attached to a motor shaft 20, of a motor III, by

any suitable means such as a nut 22;

The distributor ll revolves close to the rim or plate I4 01' the hollow portion l3 and has its bottom out out in alignment with the threaded opening ll.

v The distributor ll comprises a hollow coneshaped casting with its interior wall made of steps 23 and a number of slots 24 extending from the steps l'l to the disc l8 and formed at an angle with the vertical and at same time at an angle with the radial-direction as shown in Figure 3.

The slots 24 extend through the body of the distributor l1 and its outer wall il' which may be cylindrical in this portion. Thewall l'l' may be provided with a Ian 28. cast with the distributor in one operation.

The conical end 21, of the distributor I1 is in contact with a washer 281, which rests on a spring II adapted for forcing the washer upwards. Both washer 28 and spring 29 have openlugs 01 diameter equal to the opening i5.

Within the threaded opening ii, there is inserted a flxture 30, which projects through the spring 29, washer 2' and opening in the: distributor end 2.1.

The portion II. of the casing is provided with a drainage channel II, which receives all deopenings a, 34, SI, and 30 to receive the excess fluid. Two of these openings 36, and 38, directly beneath the point of fluid ejection are controlled ed and fitting over the neck ti, is provided with a set screw M to hold the cap in position when in use.

The cap at is provided with a series oi nestles oi varying dieter, the largest diameter being equal to aperture so, as shown in d. The nozzles 44, and 46 have their openings 3 3",, 4!, 4i, placed on the side of. the nozzle so that the fluidprojects in the direction 91 revo u io of distributor i'l.

The other end l. of the flxture 30, is threaded and receives a pipe 49 which for convenienceis placed in the stem l8, and is connectedto a valve to.

The valve 50 has anintake pipe ii leadingirom travels through opening 52 which is controlled by stem valve 53 operated byhandle 66 through link 55 and rod 56. The fluid then travels into pipe 59. v

A ring 51, is placed alongside the distributor so as to guide the waste fluid into the channel ti.

The spraying device is provided with an opening 2.5, which can be controlled at the will of the operator. tionary wall 58, and a movable circular gate 59, operated by handle 60, situated on outer plate ti, and connected to movable gate 59, through filler 62.

To the inside of the stationary wall 58 adjacent The opening is formed by a staa tank under pressure (not shown) and the fluid the opening 25 there is attached a plate 63 upon which there are situated a multiplicity of flanges 64 and 64' adapted .to catch the swirl of the fluid as it hits the inside of the casing or stationary wall 58 and to deflect the fluid into bottom of casing. The flange 66, is placed to catch a slight drip of the edges and deflect the drip into the casing l2. The flange 66 catches all excess fluid I 4 outer plate N, of the movable gate 69, and is held in place by means oi. wedge it, placed between the top car 16, and the guide l2.

In operation the fluid to be sprayed enters the pipe 5! under pressure and, governed by means of valve Ill, it passes through pipe 49 into the 11xture 30. There it leaves through one of the nozzles M, 45 or 46 to impinge against the mid-section of the distributor ll.

Owing to the velocityoi' rotation of the distributor aided by the directed flow from the nozzle the fluid rises by centriiugal force and tends to escape through the slots 24 and escapes in the form of a succession of thin sheets which break up into fine particles.

The distributor is kept relatively free from air by means oi the tight washer 28, or the fan 26, or both.

When a floor is sprayed the device is tilted and by shutting the valves 31 theopenings 35 and 38 are closed and all excess fluid must be drained through openings and 34.

m Figure 2 the distributor is shown with inclined slots 26. This inclination is for the purpose of receiving the rising fluid at an angle as shown in Figure 8 This arrangement has been found more efllcient than vertical slots.

The fluid in leaving the device is compelled by means oi the flanges $8, dd, and to leave in a tangential plane and the area to be sprayed depends on the amount the movable gate is opened as indicated in Figure 7.

The various slots and inter-slot distributor portions pass successively past the opening 25 as the distributor rotates and pass, for example, from leit to right as viewed. through said opening.

'tering the machine.

Those portions which pass any given point of said opening at a point of time just earlier than certain other portions are designated as being ahead of said portions or forward of said other portions. Said other portions are designated as rearward of said first-mentioned portions. At any given instant a forward portion may be adjacent one edge of the opening when a rearward portion is adjacent the other edge, the said edges being substantially parallel to the axis of rotation. The first-mentioned edge is termed the forward edge of the opening. The second-mentioned edge is termed the rearward edge of the opening.-

It is also a function of the flanges 63, M, and GI dependent upon their proximity to the distributor to keep the inside air from emerging to the outside.

The function of flange I. which also fits close to the distributor is to prevent the air from en- This is necessary as the machine due to the swirling action of the distributor produces a partial vacuum and there would be a tendency to suck air at that point.

Wherever strips are to be sprayed the guide ll-l2 can be used, the edge of the guides running along the extreme edges of area to be sprayed; 1

The quantity of fluid may be regulated by using the proper nozzle.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it isv intended that all matter contained in the above description or shown in the accompanying drawings, shall be interpreted as 'an illustrativeand not in a limiting sense.

It is also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention herein described.

Certain subject matter not claimed or only specifically claimed .herein has been claimed. or claimed more broadly in my copending application, Serial Number647,896, filed December 19, 1932, which is a continuation in part of the'present case. i t

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

1. In a spraying device of the class described a revolvable distributing device from which the fluid leaves in fine sheets, a stationary wall partly surrounding said distributing device and an arcuate movable wall adapted to cover the remainder of said distributing device, said movable wall adapted to be regulated for uncovering any desired area from which the fluid is sprayed, a guide on the stationary wall, and a guide on the movable wall.

2. In a spraying device of the class described,

a revolvable distributing. device from which the fluid leaves in fine sheets. a stationary wall partly surrounding said distributing device, and an arcuate movable wall adapted to cover the remainder of' said distributing device, said movable wall adapted to be regulated for uncovering an! desired area from which the fluid is sprayed. a guide surrounding'said distributingdevioe andamovable to cover the remainder of said distributing device, a set of flanges arranged at the end of each wall where the fluid is ejected,

said flanges being so arranged as to be in close I proximity to the revolving distributing device to catch the swirl of the fluid and other flanges to catch the.drip from the fluid as'it leaves the device, and means for deflecting the swirl and drip to the base of the spraying device.

5. Inv a spraying device of the class described the combination comprising distributing means providing a chamber, a casing surrounding said means; collection means formed at one end of 4 said casing adapted to catch the excess fluid, a

plurality ;.of inlets to said collection means controlled by valves, certain of'said inlets being positioned to be submerged when said device is in one position and others of said inlets being positioned to be submerged when said device is in another position, and an outlet from said collection means.

6. In a spraying device of the class described the combination comprising distributing'means providing a chamber, a casing surrounding said means, said means and said casing providing an enclosed space formed between said means and said casing where the excess fluid is deflected, a reservoir for the excess fluid and a plurality of valves controlling the flow from said space to said reservoir, certain of said valves being adapted to be closed when the position of the device is such as to prevent proper operation if the passage of said fluid past said certain valves is permitted.

7. In a device of the class described a revolving circular distributor, a circular casing enclosing the distributor said casing having an opening for fluid ejection, an arcuate gate operative at the opening, said gate being provided with a flange which is in close contact to the distributor to prevent air suction into the device.

proximity with the periphery of the distributor for preventing egress of thefluid moving with the distributor between the distributor and said surrounding member, and forwardly extending means just at the rear of said opening for preventing'the discharge of any liquid caught by the portion of said member beyond said flange means.

9. A spraying device, comprising an inner centrifugal element having a frusto-conical inner surface, means to supply liquid to said surface,

. and an outer centrifugal element positioned to receive liquid from the wide edge of said surface and comprising a multiplicity of spaced revoluble members having inner edge surfaces sloping with respect to'the axis of rotation whereby liquid delivered to the revoluble members will be spread out on their forward surfaces and discharged fromthe outer ends thereof, said inner edge surfaces andsaid conical surface being substan- 4 tially contiguous and the slope of the inner edge surfaces being in the same direction as the slope of the conical inner surface.

'10. A. spraying device, comprising a casing, a

centrifugal distributor within the casing, liquid supply means extending centrally intothe distributor from within the casing, and fan means between the distributor and the bottom of the casing for preventing the entry of air into the casing.

-11. A spraying device comprising a centrifugal distributor, means to limit the eiieetive spray to the liquid discharged from a limited portion or the-peripheralarea of the distributor, a ring of generally transverse spaced elements forming a part of the distributor, said distributor being formed w'ith'an interiorly disposed conical surface arranged to discharge liquid upon the interior of said ring during the rotation of the distributor, said generally transverse elements being disposed at an acute angle to a plane perpend icular to the axis of the distributor.

12. A spraying device comprising a centrifugal distributor, means to conduct fluid to the interioz' oi the distributor, means spaced irom the periphery of the distributor and, surrounding the major portion of the periphery thereoi for pre-- venting the ejection of spray except in a given direction, a chamber communilating with the space between the distributor and'the surrounding member and extending about said conducting means, and-means "providing a seal between said conducting means andsaid distributor to prevent the distributor from sucking in air from said chamber. v

13. A spraying device comprising a centrifugal distributor, means to limit the. effective spray to the liquid discharged from a limited portion of theperipheral area of the distributor, a ring. of

1 generally transverse spaced elements forming a part of the distributor, said distributor bein formed with an interiorly disposed conical surface arranged to discharge liquid upon the interior of said ring during the rotation of the distributor, said generally transverse elements be- 1 ing disposed at an acute angle ;to a plane perpendicular to-the axis the distributor, the inner suriaceof said ring forming substantially a condistributor, stationary means surrounding the tinuation of said conical surface. 1

it. A spraying device comprising a centrifugal major portion of the periphery of the distributor and formed with a discharge opening'at one side of the device. and an outwardly-extending member carried by said stationary means at. the rear edge of" said opening in the direction of rotation of thedistributor and extending in the direction of the discharge spray, and providing a guide for the-rear edge of the spray.

15. A spraying device comprising a centrifugal distributor, means surrounding the major poraosgear tatable distributing device within the casing,

means for supplying fluid to be distributed to the v interior of the distributing device, means in the distributing device for enabling the device to swirl the fluid against the said wall of the casing,

' a drainage channel at the bottom of the said casing, a hollow stem supporting the casing and a pipe connecting the said hollow stem with the said drainage channel, the said pipe being adapted to drain fluid collected in the drainage channel into the hollow stem.

1'7. A spraying device comprising the combination with a casing provided with an aperture for allowing passage of fluid therethrough, of a motor positioned on the said casing, a rotating distributing device driven by the said motor and adapted to eject fluid against the casing as the distributing device rotates, means for supplying fluid to the interior of the distributing device, a drainage channel in a lower portion of the casing for receiving fluid ejected from the distributing device, a hollow stem connected to the drainage channel for receiving fluid passing from the drainage channel, an'oif-take pipe leading from the said stem for draining the fluid from the stem, the said stem enclosing the fluid supply rneansand defining a supporting handle for the casing, and a nozzle within the distributing device pointing in the direction of rotation of the distributing device for discharging fluid against the inner surface of the distributing device in the direction of rotation thereof to facilitate unbroken adhesion oi the fluid to the surface under centrifugal energy imparted to the fluid by rotation of the device, the said fluid-supplying means including a fixture set in the casing, the said fixture supporting the said nozzle and being in communication therewith for supplying fluid thereto.

1'8. A spraying device comprising the combination with a casing having a wall, of a hollow rotatable distributing device within thecasing, means for supplying fluid to be distributed to the interior of the distributing device, means in the distributing device for enabling the device to swirl the 1 fluid against the said wall of the casing, a collec- 7 tion chamber for the fluid beneath the distributor, an arcuate drainage channel for the fluid in the casing, a plurality ofopenings between the collection chamber and the channel, and valve means for closing at least one of the said openings for regulating passage of the fluid from the collection chamber tothe drainage channel.

1 v 19. Aspraying device comprising the combination with a casing defining a housing, of a hollow rotatable distributing device within the housing and enclosedthereby, the distributing device defining a fluid-receiving chamber, instrumentali- I ties for supplying liquid to the interior of the said distributing device, openings in the distributing device for. ejecting liquid through the said device, an opening in the casing permitting the centrii ugai ejection of spray from the casing onto a surface to be sprayed, and guide means extending outwardly from the casing for confining the 1 ejected spray to a limited area and defining the extreme edges of the area to be sprayed.

2s. A spraying device comprising the combination with a casing deflninga' housing, of a hollow 1 rotatable distributing device within the housing and enclosed thereby, the distributing device defining a fluid-receiving chamber, instrumental ities f or supplying liquid to the interior of the said distributing device, openings in the distributing device for electing fluid through the devi an opening in the casing permitting the centrif-' particles of spray withina limited area, the said guide means defining the extreme edges'of the area to be sprayed.

21. A spraying device comprising the combination with a casing defining a housing, of a centrif ugai distributor within the housing adapted to v a spray fluid therefrom, an opening in the casing permitting the centrifugal ejection of spray from the casing onto a surface to be sprayed, and relative'ly adjustable, guide means mounted on the housing and extending outwardly therefrom beyond the normal course of the spray ejected 20 through the said opening to confine wandering particles of spray within a limited area, the said variable area to be sprayed. I

22. A spraying device comprising the combination with a casing having awall, of a hollow rotatable distributing device within the casing, means for supplying fluid to be distributed to the interior of the distributing device, means for enabling the distributing device toswirl the fluid against the said wall of the casing, a drainage 1 channel within the said casing, a hollow stem supporting the casing and connected to' the drainage channel, an off-take pipe leading from the said stem whereby fluid entering the' stem from the drainage channel may be withdrawn from the stem, instrumentali'ties within the distributing device for supplying fluid to the interior thereof, and intake means set in the casing supporting and in communication with the said instrumentalities and passing through the said hollow stem.

EDWARDO. NORRIS.

Images