US 1613336 A
Description (OCR text may contain errors)
W. VAN E. THQMPSON LAWN SPRINKLER Jan 4, 1927. fi 336 Filed August 7, 1924 I N VEN TOR.
8 By 97 wwgm Patented Jen. 4, 1927.
UNITED STATES WALTER VAN E. THOMPSON, OF LOS ANGELES, CALIFORNIA.
Application filed August 7, 1924. Serial No. 730,564.
My invention relates to that class of lawn sprinklers which have a cast body with a slitted orifice attached to the end of a hose' plication Fig. 1, is a side elevation of mysprinkler. Fig. 2 is a top plan. Fig. 3 is a section on the line 3-3 of Fig. 1.
Fig. 4 is an enlarged central longitudinal section.
Referring to the drawings the body 5 is formed by casting it from suitable metal with slot 6 and distribution chamber and threaded attaching chamber 7 therein. The lawn attaching spike 8 is secured to the body at thetime it is' cast in the well known manner as best illustrated in Fig. 4. In
the sprinklers manufactured by me I use zinc and in order to achieve the result of an even distribution of the water which issues from slot 6 I punch and form up from sheet brass what I term a slot plate 9 which is placed in the mould and the metal cast around the outside as shown in the draw ings. The slot 10 of plate 9 is a little shorter than slot 6, as best shown in Fig. 3, being in the sprinklersmanufactured by me 21/64 of an inch at each side for a sprinkler for a inch hose. The slots are preferably at an angle of 60 to the longitudinal diameter of the body and are 6/64 of an inch wide at the top and 5/64 of an inch at the bottom.
The diameter of the body at the top of the a slot is 1 inches and the inside diameter at the slot is of an inch.
These dimensions I have found from practical tests give an even distribution of the water issuing from theslot under a pressure of five pounds and up. By slanting the slot downwardly to a like extent, Icould pro-' duce a like result from a body cast from brass or other metal.
For distinction I will call the slot formed by plate 9 and body 5 a slot with a stepped bottom. By a slot with a'stepped bottom is meant one at which the inner edges are in a plane' above the plane that passes through the-outer edges. I have foundby experiment that by making the inner ed es of the slot higher than the outer edges, t e higher innerfedges cut off the flow of water sharpl and the distribution is uniform from a 1 portions of the slot.
Having described my invention I claim:
A lawn sprinkler comprising a tubularbody having at one end hose attaching. means and closed at the other end and hav- 7 ing a water outlet slot extending angularly to the longitudinal axial line of the body substantially 60 and intersecting the bore of said body, a curved plate secured in said body inthe region of said slot and defining a part of said bore, said plate having a slot therein which registers with the slot in the body, the bottom of the plate slot being in a plane spaced above that of'the bottom of 70 the body slot.
In witness that I claim the foregoing I hare hereunto subscribed my name this 2nd day of August 1924.
WALTER VAN E. THOMPSON.