US1899711A - Self-cleaning spray head - Google Patents

Description

Feb. 28, 1933.

E. G. MUNZ SELF CLEANING SPRAY HEAD Filed NOV. 18, 1929 Xiwel G. M509 ATTORNEY/8' Patented Feb. 28, 1933 umflilafovL STAfT ES? off:

Application meuf lNmfembr 18, 192'92 serial Nb? 4085er?? This'invention relates generally to sprayV headszadapted for use'in sprinkling systems Jfor lawns and the like, and is particularly V`applicable in "systems where the spray headsV tare permanently installedin the ground to'be normally flush Vwith the' surfacejtfhereof.

One of `the' essential objects `of Ithe invention'lis to'provide a self-cleaning spray head; in which the' spray forming velements of -the 04inozzle are washed and cleansed by the waf- 5" tling f'element's is rigid withthe. nozzle and the other spray formingelement 1s separable" 204'lin which'the movable spray forming element is normally spacedxfrom thecooperating ele.I ment and is movable'to andfrom'the said" elementbyfluid under pressure and by grav ter'fsupply l-looth before :and after a spray has beenprojected.therefrom;A

Another obJeot ris to yprovide Va spray head fof-this type in which` one of the sprayfformfromthe first-mentioned element andi's movable fre'ely with'respect to the 1vnozzle. Y

A further Objectis to provide a spray headI `ity.' f y lVithvthe above andother objects in viewtheinvent'ion consists of certain novel eaf Figure yl is: a vertical sectionalview` througlil'a `spray l'head Vembodying my inven- `tion and showingthenozzleyplug and cover in raisedfposition;

Figure 2is a view similar to Figure 1 with the nozzle5plug and cover 1n 4normallowered position; 4

Figur-e3 is a `view sinnlar to Figure y1 but showing'a slightly modified construction;

Figure 4 is a. section on the linefl---fl1 of Figure '2.V Y

Referring now to the drawing, 1 is a cas-A 5 ing of tubular formation, 'preferably buried 'in the ground and havinga lateral 'flange l2 v' tt' 11 f1 'hrw'th-the e .i il at lts upper'end Subs an la y usl f 6 are flushed yfree fromanyfd1rt` thatmayif= upper surface of theground, 3 is a pipe con'L necte'dto theI casing lat the `lower end there# 50 of and-adaptedto supply/water under pres` sure' from a suitable source' l t@ the vcasing;v 4.

operates with the serrations" 513" to form `Va serls of small ho1es1throug'h`whichthe 'waterr valso preventsithe plugfrompassing upwardly through the Vvorifice'.VV Normally 'the'nozzle 4 is in ythercasing" 1 adjacentfitsfflowe yfend'v .is al noZfZle slidable longitudinally ofthe'cas- 'I ingaandfhavingiawater Vdischarge'orifice 5 in 1t s*fupperfendf;v6 is a plugfrinovablelongituf' din-ally ;of thnozzle 4 and adapted* to be lrefy ceived' in rthe?orifice,7 isv alecovei' for the casi553? mgl and'noz'zle;andl 8 isvan intermediate stem extendingthrough'-thelorifioe 5 and ter` mii-rally-` :onnectedtolthe plug 6 and =cover7. p As showr1,*the` easing vl is provided at'its 5 upper end'with aninwardly extendingvanf'ol" Vnularwflangef or shoulder9 and is provided just above fthis'flange'with an annular up-y 4wardlyA :opening reces`s"10.' The' 4nozzle -4 is 'tubular ini form Land has 'a ylateraliian'geor slioulder, 11 'at 'its lower end zforengagement"655 with'trheA {ia-nge 9 ofthe vcasing to limit vup wardmiovement offthe nozzle. 4I The orifice* 5 is substantially frustroe-conical'inform and` has "its restrictedvend 12 iupperst. H 'Prefs extending longitudinallyxof its 'sidewalls' and` is adaptedtoreceive thexplg. Y

When -forced upwardly by .rwate'r pressure the plug 6A seats withinV fthe' orifice .5 `and Vois sprayed'. Thisengagementof the'rustr-xl conical-'plug 6l with theserrations `onthe inclined walls of the frustro-conical orifice and "thecover 7 is in ftherecess' 10." Howeverf .relative to thenozzl'el 4 1 d u Y A s When the water isp` turnedfoffl'the `plu"`g6"1 5v drops down, and the vseri"ations13 and have collected f thereon while nozzle't` in operation.l Thus the. oriliee andplug 6` constituting the spray forming elements '-f" 100 the nozzle are cleaned both before and after a spray is projected therefrom.

In Figure 3 I have illustrated a slight modification in which thecasing 20 serves as the nozzle and is provided at its upper when the water is turned on it will Vunseat thecover 24 and in doing so will flow over and wash theserrations 25 and the Walls of the"orifice 22. When the pressure is sufiiciente ly strong'to force theplug 26 within theorifice 22 water will then be projected in spray form from between vsaid parts, and when the Wateris turned off'theplug 26 will drop andlthezserrations 25 and vwalls'of the Lorifice will be flushed free of dirt that may have collected thereon while the nozzlewas in operation.

Likewise the saine. effect may be accome Bozplished, even though the walls of the orifice.

were cylindrical in shape. The plug then, of course, would be cylindrical too and some other. .means for. preventing theplug. from passing through the orifice would have to be c provided.V AThis might be accomplished by means of lugsorrsome other similar devicesv on thev inner 'portion ofthe nozzle.v

IVhile it is believed that from the foregoing description the'natureand advantages .of the inventionwill be readily apparent, I desire to have'it understood that I do not limitfmyself to what is `herein shown and described and 'that such changes may be resortedlto when desired as fall Within `th 45 Iscope of what is claimed. r Y l What I claim as myinvention is.:

l. A spray head comprising two relatively movable spray-forming elements, one of said elements v having an orifice and the other of said elementsl having a plug adapted to fit. ywithin said orifice, the walls of said orifice andl plug being substantially parallel,

one of said walls having serrations formed: therein to cooperate withnthe` other wall to c sub-dividel the fluid, into a series of finelyV dividedstrea'ms land means for closing said orifice vrwhen the water pressure'is removed,

said ineansbeing out of the path` of said fina' l`elements are in` ly vdivided streams when sprayforming position. y y

-'2.ji5f'devicefor irrigating large areas comprising fa kcasing having a conical discharge orifice, a plugwithconical walls parallell to the walls ofv said orificesaid plug being arranged within'said'casing and adapted to bev moved from a position remote froms'aid ori# fice into a position within said orifice by fiuid pressure and serrations in one of said conical elements at the point of discharge from said device for subdividing the discharged fluid into a series of finely divided streams.

3. A device for'irrigating large areas comprising a casing having a conical discharge orifice, a plug with kconical Walls parallel to the walls of said orifice arranged within said casing and adapted to be moved into said orifice by fluid pressure, said plug having a series of closely spaced serrations therein at the point of' discharge from said device cooperating With said orifice to sub-divide the discharged fluid into a series of finely divided streams, said plug being movable out of said orificeto exposes-the serrations thereon to lflushing action.

4. A device for irrigating large areas comprising a casing having a conical discharge orifice, a plug with conical walls arranged parallel to the walls of said orifice, said conical discharge orifice having a series of closely spaced serrations formed therein, saidk plug being normally spaced from said serratedorifice to permit the flushing of said serrations but its conical walls being movable into closely spaced relation with said serrated orifice by fluid pressure, thereby cooperating with said serrations to laterally discharge ya series of finely divided streams.

5. A device for irrigating large areas-comprising a casing having a conical discharge orifice, aplug with conical walls parallel to the walls of said orifice, said plug being arranged w'ithin said casing and adapted to be moved from a position remote from said ori fice intoa'position within said orifice by Vfluid pressure and closely spaced helicallyiinclined lserrations in one of said conical elements at the point of discharge from said device for sub-dividing the discharged fiuid into a series ofvfinely divided streams. e

6. A' devicefor irrigating large areas comprisinga casing'having a conical discharge orifice, a plug with conical walls parallel to thewalls of said orifice arranged Within said casing and adapted to be moved into said orifice by fluid pressure, said plug having a series of closely spaced helically inclined serrations vtherein at. the point of discharge from said device cooperating with said orifice to subdivide the discharged fluid into a series of finely dividedstreams, said plug being movable out ofsaid orifice to expose the serrations thereon vto flushingA action.

7. A device for irrigating large areas comprising aY casing having a conical discharge orifice, a plug with conical walls arranged parallel Ito the walls ofsaid orifice, said conical discharge orifice having a series of closely spaced, Vhelically inclined rations formed therein, said plugL being normallyspaced from said lserrated orifice to permitl the flushing vof said serrations but'y serf being movable into closely spaced relation with said serrated orifice by fluid pressure, thereby cooperating with said seri-ations to laterally discharge a series of finely divided streams.

8. A spray head comprising a vertical casing, a nozzle head axially movable within said casing and having a vertical discharge orifice with an inwardly and upwardly tapering conical wall, a second axially movable member within said nozzle head having a pluO' adapted to seat within sai-d conical orifice by water pressure and to withdraw therefrom by gravity, said plug having a conical wall substantially parallel to said conical orifice, and helically inclined closely spaced serrations on one of said conical walls.

9. A spray head comprising` a vertical casing, a nozzle head axialiy movable within said casing and having a vertical discharge orifice with an inwardly and upwardly tapering conical wall, a second axially movable member within said nozzle head having a plug adapted to seat within said conical orifice by water pressure and to withdraw therefrom by gravity, said plug having a wall substantially parallel to said conical y orifice wall and helieally inclined closely spaced serrations on the wall of said conical orifice cooperating with the wall of said plug to form a series of finely divided streams.

l0. A spray head comprising a vertical casing, a nozzle head axially movable within said casing and having a vertical discharge orifice with an inwardly and upwardly tapering conical wall, a second axially movable member within said nozzle head having a plug adapted to seat within said conical orifice by water pressure and to withdraw therefrom by gravity, said plug having a wall substantially parallel to said conical orifice wall, helically inclined closely spaced serrations on one of said conical walls, a stem extending from said plug through said orifice and a cap carried by said stem adapted to seat in said vertical casing and arranged to be out of the path of the fluid when said conical elements are in spray-forming position.

1l. A device for irrigating large areas comprising a casing having a conical discharge orifice, a plug arranged within said casing and adapted to be moved from a position remote from said orifice into a position within said orifice by fiuid pressure, said plug having a wall cooperating with the wall of said conical discharge orifice, one of said walls having a series of closely spaced helically inclined serrations at the point of discharge of the fluid from said device, said serrations being adapted to sub-divide the discharged fiuid into a series of finely divided streams. Y

12. A device for irrigating large areas comprising a casing having a discharge orifice, a plug arranged within said casing and adapted to be moved from a position remote from said orifice into a position within said orifice by fluid pressure, said plug having a wall cooperating with the wall of saiddis-`

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