US1116536A - Lawn-sprinkler. - Google Patents

Description

G. BALLREIGH.

LAWN SPRINKLER.

APPLICATION FILED 0012s, 1913.

1,116,536. Patented Nov. 10, 1914.

WITNESSES. INVENTOR A41? WWW, MmMiYaM TORNE Y NORRIS PETERS (10.. PHOTO-LlTh WASHINGTON. D I

v UNITED STATES PATENT OFFICE.

CHARLES BALLREICH, 0F PUEBLO, COLORADO.

LAWN-SPRINKLER.

To all whom it may concern:

Be it known that I, CHARLES BALLREICH, a citizen of the United States, residing at Pueblo, in the county of Pueblo and State of Colorado, have invented a certain new and useful Improvement in Lawn-Sprinklers, of which the following a full, clear, and exact description.

This invention is an improvement 111 lawn sprinklers and has for its object the provision of a simple, cheap and easily constructed device which will distribute a spray throughout a truly semi-circular area.

In its preferred form the invention comprises means for connection to a hose combined with a hollow chamber into which the water is delivered, said chamber having a substantially semi circular slot therein through which the water is ejected in the form of a spray. Though I do not wish to limit myself in this regard, I prefer to form the chamber either as a cylinder, a frustum of a cone or a hemisphere with a cylindrical or frusto-conical eXtens1on1n other words as a surface of revolution-and to locate this chamber with its axis at right angles to the direction of the entering water. I also prefer to locate the slot ust below the top of the chamber so that said top may aid in directing the water toward the slot. Ihave found, furthermore, that a more satisfactory spray is delivered if the inner edge of the lower surface of the slot be more'distant from the axis of the chamber than the outer edge of the upper surface of said slot. Such a shaped orifice located as described delivers a stream at an angle of about l5 degrees and the interference pro duced therein by the particles of water ap-. proaching the orifice from slightly different angles and by the slight inevitable roughness of the edges of the slot, wlll spray the water suiliciently to deliver it uniformly over the semi-circular area to be covered.

In order that water may leave a semicircular slot uniformly in quantity and velocity throughout the length of the slot, it

is necessary that the inertia of the water flowing in the feed pipe or hose, that is to say the tendency of this water moving in a given direction to continue moving in that direction, be overcome as nearly as may be and that the discharge shall be such as results from the hydrostatic pressure of the water only. The provision of a chamber which has its axis at substantially right angles to Specification of Letters Patent. I Patented No 10 1914, Application filed October 6, 1913. Serial No. 793,742. i

the direction of the entering water, and preferably of a capacity greater than a similar length of hose, results largely in overcoming the inertia of the entering water. I have found, however, that within practical sizes it is not convenient to entirely neutralize the entering inertia of the water and that to obtain a truly semi-circular discharge it is desirable to make the slot alittle more than a semi-circle in length as indicated in the drawings.

Further and more particular advantages of my invention will later appear in the specification and be pointed out in the appendedclaims.

In the single sheet of drawings accompanying this application and forming a part hereof Figure l is a perspective of one form of sprinkler embodying my invention, this form being capable of being conveniently made by casting; Fig. 52 is a central, vertical cross section of the form shown in Fig. 1; Fig. 3 is a central, vertical cross sec tion of another form of my invention, this form being capable of being readily made by pressing or spinning; and Fig. L is a central, vertical cross section through a still different embodiment of theinvention,

which form can be made either by stamping or casting. a y

In the embodiment shown in Figs. 1 and 2, 5 represents a base, 6 a threaded connection for a hose, and7 a chamber disposed at substantially right angles to the hose connection, which chamber in the form shown is substantially cylindrical though slightly conical toward the upper end, 9. A sub- This slot may be formed in The ground surface makes a substantially 1 equal angle with the horizontal and vertical so that the imaginary vertical and horizontal lines A and B (Fig. 2) clear both the side and the top of the chamber. line C of Fig. 2 indicates the axis of the chamber '7 and points out clearly that the The dotted slot 8 is ground through more than a semicircle. This is for the reason, as previously stated, that within practical limits of size of the chamber 7 the direction imparted to the water by its passage through the hose can not be entirely overcome and in order to obtain a truly semi-circular spray I have found it necessary to make the slot a little greater than a semicircle.

In Fig. 3 I have shown a modification in which the chamber 11 is substantially a hemisphere, a short cylindrical shaped projection 12 being formed thereon in which to make the slot or orifice 13. This slot also may be made by grinding or filing away the metal, which in this form is preferably stamped or spun and therefore thin. The angle of grinding, to give the same relation between the sides and top of the slot, and the circular length of the slot should preferably be the same as those indicated in connection with the modification shown in Fig. 1.

In Fig. i I have illustrated a modification Which may be made either of cast or pressed metal and in which the slot 1th may readily be sawed or cored out and still maintain the inner edge of the lower portion of the slot farther away from the axis of the chamber than the lower edge of the upper part of the slotwhich is the desirable relation as pointed out above. In this form, which is that of a truncated cone, the sides of the chamber are inclined and the inclination to be given thereto is determined by two factors, namely, the thickness of the metal employed and the width of the slot to be made. The thicker the metal is made with the same width of slot, the greater the inclination which must be given to the sides; and the wider the slot, with the same thickness of metal, the less inclination to the vertical need be given to the sides. It will be obvious that only the upper portion of this modification (the part wherein the-slot is to be made) need be given the particular inclina tion whereby a horizontal incision will produce a slot through which the vertical F can be dropped without touching the sides and that the remainder of the chamber may Copies of this patent may be obtained for angles to the axis of said chamber, the top and lateral surfaces meeting for approximately a semi-circle only whereby there is formed a substantially semi-circular slot immediately below said top, the edges of the top and lateral surface adjacent the slot being so beveled that the lower edge of said slot is farther distant from the axis of said chamber than the upper edge thereof. 1

2. In a lawn sprinkler, a chamber having the lateral surface of a solid of revolution and a top and bottom disposed in planes at right angles to the axis of said chamber, the top and lateral surfaces meeting for approximately a semi-circle only whereby there is formed a substantially semi-circular 1 slot immediately below said top, the edges of the top and lateral surface adjacent the slot being so beveled that the lower edge of said slot is farther distant from the axis of said chamber than the upper edge thereof, and means in the lateral surface of said chamber adjacent the bottom thereof and on the side opposite said slot for admitting water to said chamber.

In testimony whereof, I have hereunto signed my name in the presence of two witnesses. v CHARLES BALLREICH. lVitnesses:

EDITH A. WARNER, W'. B. VATES.

five cents each, by addressing the Commissioner of latentl, Washington,- D. C.

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