US1887416A

US1887416A - Spraying device

Info

Publication number: US1887416A
Application number: US480760A
Authority: US
Inventors: Robert K Matlack
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-09-09
Filing date: 1930-09-09
Publication date: 1932-11-08
Anticipated expiration: 1949-11-08

Description

Nov. 8, 1932. R; KIMATLACK 1,837,415

SPRAYING DEVICE Filed Sept. 9, 193C? 2 Sheets-Sheet 1 iEvQfff/M %&

Nov. 8, 1932. MA LA 1,887,416

SPRAYING DEVICE Filed Sept. 9, 30 2 Sheets-Sheet 2 Patented Nov. 8, 1932 1 Application filed September 9,1930. Serial-No. 480,760; The present invention relates to methodsof the more. even will be its pressure and appliand devices for spraying material, and is parcation to the article bein'gcoated. V ticularly adapted to the distribution of fluids The above objects and: featurcsof my'in-. ona'paper surface or a similar article. Such vention, as Well asthe details of construction 3- fluids may constitute vany coating material, of a single embodiment thereof, will be readi- V such as coloring, gumming, wax, glue, and ly understoodfrom the following detailed other materials. The method and device of description 'takenxinconnection with the acthe invention'are, however, not limited to companying drawings.= thedistribution of fluids, since they are apw In the drawings I 51 plicable also to the distribution of any mate- Fig. 1 is alview showing the' specific em- .00

rial which can be sprayed, suchfor example bodiment ofthe'device of my invention in as material in a finely divided or powdered side elevation, aportion of the containers bestate. I ing broken away to enable a clearer under- It is the general object of my invention to standing of the detailsof the device. a

1 .1 provide a device of the class indicated which I Fig. 2 is a sectional view along line II. II ,66

1s simplein construction but highly efficient of Fig. 1; g EV g ,7 in operation, attaining results heretoforeim- Fig. dis a view partly in section of one end possible with devices-of the prior art; of mydevice showing the details ofconstruc- A further object of the invention is to protion thereof, especially the details of the, ad

vide a device which operates in accordance justable feature of the outer concentric chamwith anovel method to obtainan extremely-her; and 4 even coating of any desired thickness of ma- Fig; 4; is a sectional view along line H terial on the article to be coated. This: obof Fig; J f I ject is attained by a method which comprises "Referring to the several views of thedraw- 11-31 the expansion of compressed gaseous matter, ings, there is shown a horizontally disposed such for example as compressed air, .to hollow shaft 1 which is fixedly mounted in equalize its pressure throughout, and the supporting 'standards3 and 4; 1 The shaft-l 7 "emission oftheexpanded gaseous matter from is provided, with nozzles 2-which extend F an elongated slot nozzle which extends the arounda' substantial part of 'its periphery 3:5 full width of-the article being coated. In this in any desired arrangement- '(see' Fig; 2)

manner, a stream of gaseous matter of even- These nozzles may be formed as anintegral pressure throughout the entire stream is 'obpart A of the" shaft, or they may comprise tained and may be directedagainst particles threaded members which are adaptedto be of the material to be sprayed or distributed, screwed into threaded holes in the shaft.

forcing them on to the article being coated. 11 End Of Shaft 1 is provided with, a. cap 35 A device constructed in accordance with my member W 111E311 may ke fIII f a hre ded invention and which operates in accordance w QR h r dj f h f with the aboveoutlined method, comprises a T p po fi Q ll l ZQ pro d JO plurality of concentrically arranged chambers fi e flq 9 fin f ,shaft h having expanding noZZles therebetween, the other i d f h shaft dttaqhed to l outermost chamber having an elongated slot m b 9f deslred and nozzle for emitting the exp nded gaseous gg: 3 5 393? g ;;g:i2 m%% A :31: g t gi d g device. Shaft 1 is provided adjacent support .35 t" a S ng l em n 3 with aroller bearinv 7 which may comprise of my device which comprises 9 K two a suitable'housi'ng oi race members 8 and 9 concentncany anged m s, W be see Fig. 3) and suitable roller members 10. pp h y n of expandlng The'purpose of this bearing is to provide a F Chambers ay be pr n of ur e, the rotatable mounting for gear 11 on the hollow greater the expansion of the emitted matter, shaft.- Gear 11 comprises a spider portion 9 40 i a V 1 7 Inside the screen member and adjacent the bearings which support the screen member,

having the desired speed and speed control means.

The peripheral portion of gear 11 hasan" extending flange 16 with spaced holes there about.- A screenmember 18, which in the present instance takes a cylindrical or squirrel cage form, has one end attachedto the flange 16 by means of suitable bolts 17 The end of the screen member fits snugly over the flange, and as many bolts as is necessary to provide asecure connection may be used. The other end of the screen member is attached to a spider member :19, which has an extending flange 20 similar to flange 16 of the gear. In this case also the end of the screen fits snugly over the flange, and aplurality of bolts comprise the attaching or securing means. The spider 19 is mounted upon the hollow shaftl by means of a suitable roller bearing 21, in the same manner as gear 11 is mounted thereon. In this instance also, suitable spacers 'or collars may be used if necessary. From the description thus far, it will a be apparent that pinion 15 being driven by some external source of power will drive the medium of gear 11, the screen member rotatmg on its bearings about the stationary shaft 1.

shaft 1 has mounted thereon a pair'of eccentric members'22. Reference may be had, to Figs. 3 and 4 and a clearer understanding of the details of construction 1 now to be described. The details'of one'end only of the device are shown since the other end is identical. The eccentric member 22 has an enlarged portion adjacent shaft -1 which is provided with a pair of diametrically opposite threaded holes. A packing gland member 23 surrounds shaft 1 and is attached to eccentric 22 by means of a pair of threadedbolts'23 and 27 which are provided in extending ears 24 and 25 of member 23. Any suitable packing material may be used to provide a gastight joint. It will be understood that this feature of the device is a conventional one which is well known in mechanical arts. Co-

operating with eccentric 22 is an eccentric ring 28. Aap-lurality of lugs 29, which are adapted to be secured or attached to ring 28 by means of bolts 30 and nuts '31, adjustably attach the eccentric to its co-operating ring.

It will be apparent that by loosening bolts 26 and 27, the eccentric is loosened so that it may be rotated about shaft 1. By loosening bolts 30, the eccentric is detached from its ring member 28, so that the eccentric may be rotated, thereby varying the position of its co-operating ring. While the details of only one eccentric and its ring member are shown in Fig. 3, it will be understood that the construction at the other end of shaft 1 isidentical therewith. Eccentric ring 28 is formed to have a peripheral flange 32, which has holes thereabout for the reception of screws 33. cylindricalmember 34 has peripherally arranged threaded holes at each end for the reception of thescrews 33. In this manner,

member 34 may be securely attached to the eccentric ring members 28 at each end. This structure constitutes the out-er expansion 'member of thedevice- :Member 34 is prolength.

It will be apparent that while the screen orsquirrel cage rotates about the stationary shaftl, the cylindrical member 34 within the screen member'is stationarya..By means of the adjustable feature shown, the position :of member 34 may be varied with respect to the hollow shaft. This also varies the position of member 34 and its nozzle 35 with respect to the rotating screen. A container 36 is provided, as-shown in Fig. 2, for the material to be sprayed or distributed. This container is disposed underneath the rotating screen *member, and may be provided if desired with S(1U.1IIGl cage or screen member through the Y '36 and will carry themadjacent the slot nozzle 35, where they will be blownofl the screen onto the article being coated. It will be un- ..derstood, of course, that the article being coated, such for examplea's paper, may be mounted on rotating rolls arranged and driven in anysuitable manner so as to cause the paper to pass ad acent the nozzle and screen ata constant speed. The compressed gas,

air for example, will pass through. the stationary shaft 1 and from there into the outer chamber through the nozzles. In doing so the gas is expanded to such a degree that its pressure is uniform throughout.

A. device constructed in accordance with my invention possesses many desirable features. It will be noted that the thickness of the coating being distributed or sprayed on the particular article maybe regulated in several ways. The speed of the rotating screen member may be adjusted by suitable regulating means. The speed of this member will partly determine the thickness of the coating being applied. Furthermore. the

speed of-the screen member maybe adjusted to'suit coating materials of different consistencies. For example, a material of light con sistency would be more readily projected from the screen onto the paper than a material ent speeds of the rotating screen member would be required to give coatings 1n each case oftne same thickness. apparent that the coating of the material will'depend upon the distance of nozzle 35' By means of the from the screen member. ad ustable feature shown, the outer cylindrical chamber may be ad usted both horizonthe screen. The coating may also bevaried I by varying the pressure of the incoming gas.

It is to be understood that any number of expansion chambers may be provided. While I have shown a single embodiment having expanding nozzles for conveying the com-- pressed gaseous matter from an inner chamber to an outer expansion chamber, it will be apparent that a greater number of concentric members having expanding nozzles for conveying the compressed gas from one chamber to the next may be provided. In this instance, of course, only the outermost chamber would be adjustable. My invention contemplates broadly the idea of expanding the gas in a series of concentric chambers before finally emitting it from an elongated nozzle provided on the outer member. It is also to be understood that various other ways than that shown may be used for'conveying the material to be sprayed from its container to a point ad acent the nozzle. Forexample, 1nstead of using a squirrel cage member, a

screen conveyor could be mounted for rota-' tion about a plurality of rotating rollers so that it would pass the nozzle. Another modification would be to have a plurality of tangentially arranged rollers for picking up the material from its container, and have the noz zle blow the material from the surface of such rollers.

It is, therefore, to be understood that my invention is not limited to the single embodiment disclosed and described herein.- The above-indicated and other modifications of the device will be readily apparent to those skilled in the art without departing from the spirit and scope of the invention. I desire it to be understood, therefore, that my invention is not to be limited by the specific. disclosure herein contained but only as is necessary in view of the prior art as indicated in the scope of the appended claims.

I claim:

1. In a spraying device for coating paper or the like, means for supplying compressed gaseous matter to said device, means for expanding said matter to obtain uniform pressure thereof, means for carrying the material to be sprayed, means for directing an even stream of said matter against said carrying coated. I

means to project said material in a finely divided'state'on to thearticle to-be coated and ward and away from said carrying means. P 2; Ina spraying device forcoating paper gaseousmatter to said device, pressure-expandingmeans for said matter comprising a plurality of intercommunicating expansion chambers, means for carrying the maternal to be sprayed, and means'for directin'ga wide and even.- stream-of said matter against said tally and vertically, thereby varying the position of the emitting nozzle with respect to carrying means to project said material in a finely divided 3. Ina spraying device for coating paper =means for moving said directing meansl'td of heavler consistency, and, therefore, difierstate onto the articlei to be; 7

or the like, means for supplying-compressed v gaseous matter to said device, pressure expanding means for said matter comprising a plurality of concentrically arranged chambers having pressure expansion nozzles for the passage of said matter 'therebetween, the outermost chamber having an elongated slot nozzle for the emission of said matter in a wide and even stream, and means for carryingparticles of thematerial to be sprayed to a point'adjacent said nozzle, whereby the emitted matter blows said material of]? said carrying means on tothe article to be coated. 4. In a spraying device for coating paper orthe like, a hollow shaft serving as a conduit for compressed gaseous matter, a .plurality of nozzles spaced about a substantial portion of the cylindrical surface of said I shaft, a cylindrical member adjustably mounted on said shaft and enclosing said nozzles to form an expansion chamber for said matter, said member having an axially disposed elongated slot nozzle for the emis I sion of said matter, a container disposed bet neath said nozzle, and rotatable means for lifting particles. of material from saidcontainer to a point adjacent saidnozzle, whereby said material may be blown on to the article to be coated. V i 5. In a spraying device for coating paper or the like, a hollow shaft serving as a conduit for compressed gaseous matter, a plurality of nozzles spaced about a substantial adapted to lift particles of material from said container to a point adjacent said nozzle, whereby said material may be blown on to the article to be coated. I 6. In a spraying dev ce for coating paper or the like, a hollow shaft serving as a conduit. for compressed gaseous matter, a plurality of nozzles spaced about a substantial portion fol thecylindrical surface of said shaft, ec-

centric members carried by said, shaft, a cylindrical member enclosing said nozzles to form an expansion chamber for said matter, eccentric rings carried by said cyllndrlcal member and cooperating witli said eccentric members, whereby said cylindrical member is vertically and horizontally adjustable rela- 'tive to said shaft, said cylindrical member having an axially disposed elongated. slot nozzle for the emission of said matter, a con- I tamer disposed beneath said nozzle, and rotatable means for lifting particles of the material from said container to a point adjacent said nozzle, whereby said materialmay be blown on to the article to be coated.

ROBERT K. MATLACK.