Lawn Sprinklers.
Year: 1892

page_text: Date claimed for Patent under Sect. 103 of Act,
being date of first Foreign Application (in
United States of America),
}
28th Apr., 1892
Date of Application (in United Kingdom), 11th Nov., 1892
Complete Specification Left, 11th Nov., 1892-Accepted, 18th Feb., 1893
COMPLETE SPECIFICATION.
Lawn Sprinklers.
I, DANIEL COOK WILGUS, of Los Angeles City, in the County of Los Angeles
and State of California, Manufacturer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
in and by the following statement :-
My invention relates to that class of sprinklers in which the water is introduced
tangentially into a circular chamber and is discharged from an orifice in the top
of such chamber.
The object of my invention is to produce a sprinkler of this class, which may be
attached directly to an upright pipe or stand and will discharge the water in an
even circular sheet or spray.
A further object of my invention is to so arrange and construct the sprinkler
that a central jet will be discharged upward from the central portion of the sprinkler,
thus producing an ornamental effect in addition to wetting the ground in close
proximity to the sprinkler and between the sprinkler and the water which reaches
the earth from the main discharge of the sprinkler.
My invention comprises a sprinkler provided with a flat circular vortex chamber
and a centrally arranged outlet or discharge orifice in its top; a water supply
chamber beneath such vortex chamber and arranged for attachment to the supply
pipe; one or more induct passages leading from the supply chamber to the vortex
chamber through the floor thereof, arranged to discharge into such vortex chamber
in reverse directions and upon opposite sides of such chamber tangential to its
periphery.
My invention also comprises the combination of a sprinkler provided with the
above features, and with a jet passage arranged in line with the axis of the vortex
chamber, and leading from the supply chamber to the vortex chamber.
The accompanying drawings illustrate my invention.
Fig. 1 is a vertical mid-section of my improved sprinkler in operation.
Fig. 2 is a plan view of one of my improved sprinklers, the top being removed
to show the arrangement of the inlets into the vortex chamber.
Fig. 3 is a plan view with the top in place.
Fig. 4 is a plain elevation of the sprinkler mounted upon a fragment of a supply
pipe.
A is a flat vortex chamber which as illustrated is circular with concave top A¹
and bottom a. B is a supply chamber which is located beneath the vortex
chamber and is separated therefrom by the bottom a of the vortex chamber, and
is provided with the screw-threaded supply passage which is arranged to screw
upon the stand- or supply-pipe C which is connected with the water supply.
D D' are two inlet passages or ducts leading from the supply chamber into the
vortex chamber, and which are arranged to discharge into the vortex chamber
tangential to its periphery, and upon opposite sides of the center of such chamber.
D

page_text: a is the central discharge orifice or outlet opening from the vortex chamber
and arranged in line with the axis of such chamber.
In practice the head E is cast integral, the passages b, D D' and chamber B
being formed by a core, and to economize metal and make the sprinklers as light
as possible, the lugs e are cast upon the head to allow the passages D D' to be
formed therein. The concave top A' is screwed into the head E, as illustrated
in Fig. 1.
In practice the water is turned on through the supply pipe C, and enters the
chamber B, from which it is discharged through the passages D D¹ tangentially
into the vortex chamber A which fills with a body of rapidly gyrating or rotating
water and thus forms a vortex in the center of the chamber, as illustrated in
Fig. 1, and because of centrifugal force the water is discharged from the inner
wall of the vortex as soon as it reaches the outlet opening a" and as it nears the
center of the chamber the gyratory motion is more rapid and the centrifugal force
greater, and the water is thrown outward in a circular sheet H to a considerable
distance from the sprinkler.
The stream discharged through the opening a¹ passes upward through the center
of the vortex in a jet I which rises above the sheet discharged from the outlet a",
and, falling to the ground, in passing through the sheet H is broken and scattered
and thoroughly wets the ground in the immediate vicinity of the sprinkler.
The two inlets or passages leading into the vortex chamber through the floor
thereof upon opposite sides of its center cause a uniform vortex to be formed in such
chamber, and consequent uniformity in the sheet of water discharged from the
orifice a¹¹.
These inlets may be arranged to open into the vortex chamber through the side
walls of the chamber, without departing from the spirit of my invention, but the
sprinklers are more easily manufactured when made as illustrated in the drawings.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is,
A lawn sprinkler provided with a flat circular vortex chamber and a centrally
arranged discharge orifice in its top; a water supply chamber beneath such vortex
chamber and arranged for attachment to the supply pipe; two induct passages
leading from the supply chamber to the vortex chamber and arranged to discharge
into such vortex chamber in reverse directions upon opposite sides of such chamber,
tangential to its periphery, and the jet passage arranged in line with the axis of
the vortex chamber, and leading from the supply chamber to the vortex chamber.
Dated this Fifteenth day of October 1892.
DANIEL COOK WILGUS.
W. P. Thompson & Boult,
Agents for the Applicant.