US 2607625 A
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A 19, 1952 L. sAL'MoNEsE 2,607,625
LAWN SPRINKLER Filed Jan. 13, 1951 4 INVENTOR. LUI SALMONESE ATTORNEY Patented Aug. 19, 1952 Lui Salmonese, Portland, Oreg.
Application January 13, 1951, Serial No. 205,884
This invention relates to a lawn'sprinkler that revolves under reaction forces that result from several generally tangential lots, as d practically all of the similar sprinklers of which there are a great number.
The principal object of the invention is a sprinkler that is not topheavy and can be easily moved from area to area in sprinkling a lawn or the like by pulling the hose around, without upsetting the device, or which can be immediately straightened if it does upset without the usual alternative of shutting ofi the water pressure or taking an unwanted Wetting.
Another object is to make the revolving part in the form of a small hollow ball of soft metal such as cast aluminum and with small outlet holes for the reason that such a ball, if properly mounted for practically frictionless revolution without packing will break up the issuing streams into fine droplets having little carrying power in the air and therefore sprinkling a lawn with an adjacent sidewalk can be done without forcing pedestrians to leave that portion of the thoroughfare to the exclusive use of the sprinkler.
A further object is to construct the rotative bearing portion of the sprinkler so that it is largely counterbalanced as to hydraulic thrust,
to lessen the friction of the rotating bearing to a minimum.
Another object of the invention is to use two kinds of openings in the ball, to be explained infra, for the purpose of producing a relatively higher reaction force of issuing jets, where hydraulic reaction is important by initiating the spray tendency before the water emerges into the atmosphere, cutting down the sprinkling range very considerably but more than compensating for that by more accurate control as mentioned supra.
I achieve the results by the structure shown in three views of my new sprinkler, in which:
Fig. l is a vertical section of the best form that I can make, as presently experienced;
Fig. 2 is a section of Fig. 1, taken on the plane 2-2, Fig. 1; and
Fig. 3 is a general organization view in perspective, at smaller scale than the other figures.
Describing the drawings in greater detail, numeral l represents a base that will be. as shown, larger in proportion to the sprinkler head, to afford great proportional stability, which is a matter of design only.
Centrally mounted on the base I and integral therewith is a boss that incorporates a, bearing member 3, within which is revolubly mounted a tube 4 having a head 4' that revolves under influence of turning force within the member 3. The tube 4 is shown as being threadably engaged with a bushing 5 that is screwed into the integral boss of the revoluble hollow ball 2. It is especially to be noted that the ball 2 is cast, preferably from aluminum, with a relatively thick internal rib 1 through which, from the outside inwardly, four angularly and downwardly slantin emisson outlets for imparting a whirl to the ball 2, are drilled.
These whirl jets should have the ability to break the issuing streams into spray, and making the inlet and outlet ends elliptical, which is implicit in drilling an angular hole through an annular structure from outside to inside, serves better than an inset thin plate orifice and is much less expensive.
It is to be noted that these holes are relatively small as mentioned, supra, and it has been found that a number 44 drill makes the most satisfactory sized opening, if the tube 4 is made from a short piece of (.281" ID) pipe, brass with a head afiixed. It will be noted from the drawings that the compound angle of the drill holes through the spherical wall of the ball 2 and the inside of the rib 1 produces a decided elliptical inlet and outlet, which starts breaking up the issuing spray into droplets before it has left the ball, which, taken with the high speed, a result of the small diameter (2%" is recommended). will achieve the objective in a very satisfactory manner.
The remaining holes indicated by numeral 8 should be smaller than the double angle holes and by their reaction thrust tend in part to counterbalance the load on the flange 4, which contributes to free running. A hose connection 9 completes the description of the sprinkler and it may be remarked that the effect of rotative speed of the small diameter ball type sprinkler head is so marked that throttling a sillcock supply for the hose 9 will clearly lessen the rotative speed without perceptibly changing the diameter of the area watered until it is reduced to three quarters or less of full pressure and supply.
Having fully disclosed my invention, what I claim as new and desire to secure by Letters Patent, is:
A lawn sprinkler of the hydraulic reaction revolving type, comprising a base formed with a flat bottom and an upwardly projecting centrally disposed bearing member, means for supplying water under pressure through the base and through said bearing member, a, tube revolubly e 4 2,607,625 I 3 v 4 mounted in said bearing member, a hollow metal REFERENCES CITED ball attached to said tube to revolve therewith, The following references are of record in the said ball including an inner integral equatorial me of this patent: rib of relatively substantial thickness, said rib provided with a. plurality of equally spaced drilled 5 UNITED STATES PATENTS water ejection conduits so positioned that their Number Name Date inner ends are within the inner surface of said 203,069 Pennington Apr. 30, 1878 rib, said conduits drilled at a compound angle to 207,756 Maguire Sept. 3, 1878 eject water upwardly and outwardly, both ends 1,088,446 Powers Feb. 24, 1914 of said drilledl'conduits' having elliptically formed 10 1 1;135,495 Briggs Apr, 13, 1915 waterways." 1,448,876 SIadden' Mar. 20, 1923 2,526,265 Nulph s Oct. 17, 19-50 1m SALMONESE; 2, 31, 23 Smith Nov. 28, 1950