IMPROVEMENTS IN FLUSHING-CISTERNS
Year: 1885

page_text: I RICHARD BROWN EVERED, of 28 Drury Lane, in the County of Middlesex,
Brass-Founder do hereby declare the nature of my invention for "IMPROVEMENTS
IN FLUSHING-CISTERNS "to be as follows:-
My invention relates to cisterns for flushing water-closets and for similar
purposes, and is designed to provide in a simple and efficient manner for ensuring
the trapping or sealing of the pan or other receptacle by what is termed the
"after-flush.'
My improvements are applicable to flushing-cisterns of that class wherein the
supply of water for the after-flush is controlled by the lever which operates the
valve for effecting the first flushing of the pan or receptacle.
In carrying my said invention into practice I make the cistern with a chamber
or compartment designed to be supplied with water when the flushing valve is
opened and to keep this supply of water in reserve for the after-flush.
This chamber is provided with two valves which I will hereinafter term the
inlet and outlet valves and which are connected by the rods with the actuating
lever on opposite sides of its fulcrum.
When the flushing valve is raised or opened to flush the pan or receptacle, the
inlet valve is opened and the outlet valve closes. The opening of the inlet valve
puts the said chamber in communication with the main compartment of the cistern,
so that the water flows therefrom into the said chamber, while it is also flowing
through the flushing valve to effect the first flushing.
When the lever is released the flushing valve and the inlet valve close and the
outlet valve is opened. The water which has accumulated in the said chamber
then flows through a passage and down a pipe into the pan or receptacle, which it
effectually traps or seals. The said passage is formed by fitting a plate within the
tank between the walls or sides thereof, and the said compartment or chamber is
formed in a similar manner by other plates. The said tank may be made either of
galvanized wrought iron or of cast iron.
By constructing the cistern as above described I provide a separate valve and
passage for permitting the flow of water into the reserve chamber for the after-
flush, instead of employing for this purpose the flushing valve and passage. I am

page_text: thus enabled to collect a larger quantity of water for the after-flush than would
otherwise be practicable should the flushing valve not be held open for a sufficient
length of time to permit the reserve chamber to be completely filled.
I am aware that this result has to some extent been obtained by the employment
of a cistern provided with four valves but this form of cistern is costly and does
not work very satisfactorily. By my invention I obtain the desired result with
only three valves. Moreover my apparatus is cheaper and simpler in construction
than those of the same class heretofore usually adopted.

page_text: I, RICHARD BROWN EVERED, of 27 Drury Lane, in the County of Middlesex,
Brass-Founder, do hereby declare the nature of my invention for "IMPROVEMENTS
IN FLUSHING-CISTERNS "and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
My invention relates to cisterns for flushing water-closets and for similar
purposes, and is designed to provide in a simple and efficient manner for ensuring
the trapping or sealing of the pan or other receptacle by what is termed the
"after-flush."
My improvements are applicable to flushing cisterns of that class wherein the
supply of water for the after-flush is controlled by the lever which operates the
valve for effecting the first flushing of the pan or receptacle.
In the accompanying drawing I have shewn a sectional perspective view of a
flushing cistern made in accordance with my invention.
a indicates the tank or receptacle for the water, b the ball-valve for regulating
or controlling the supply of water thereto, c the pipe for conducting the water to
the pan or receptacle to be flushed. d is a lever for actuating the valves herein-
after described. This lever is provided at one end with a chain d' or other suitable
means for operating it. A rod e connects its other end in the ordinary manner
with the flushing valve f.
g is a chamber or compartment designed to keep a supply of water in reserve for
the after-flush. This chamber is provided with a pipe g¹ which extends upward to,
or nearly to, the top of the tank a and permits the passage of air to and from the
chamber g. The said chamber is also provided with a valve h for controlling the
flow of liquid from the tank a into the said chamber, and a valve i for controlling
the flow of liquid from the said chamber into a passage k which communicates with
the pipe c. The valves h, i are connected by the rods l, m with the lever don
opposite sides of its fulcrum d².
When the chain d¹ is pulled downward to open the valve f and flush the pan or
receptacle, the valve h is opened and the valve i closed. The opening of the valve h
puts the chamber g in communication with the tank a, so that the water flows
therefrom into the said chamber. A supply of water for the after flush is thus
permitted to accumulate in the chamber g while the first flushing is taking place.
When the lever d is released, the valves f and h are closed and the valve i is
opened. The water which has accumulated in the chamber g then flows through
the passage and down the pipe c into the pan or receptacle, which it effectually
traps or seals.
The passage k and the chamber or compartment g are formed by means of plates
or partitions cast in one piece with the tank a or fitted and secured between the
walls or sides thereof.
My improved cistern may be made either of galvanized wrought iron, or of cast
iron.
By constructing the cistern as above described I provide a separate valve and

page_text: '
the after-flush, instead of employing for this purpose the flushing valve and passage
as heretofore usually practised. I thus ensure the accumulation of a larger quantity
of water for the after-flush than would accumulate in the case of cisterns as here-
tofore usually constructed, should the flushing valve not be held open for a sufficient
length of time to permit the reserve chamber to be completely filled.
I am aware that this result has to some extent been attained by the employment
of a cistern provided with four valves, but this form of cistern is large and costly.
By my invention I attain the desired result with only three valves. Moreover my
apparatus is cheaper and simpler in construction and more efficient than those of
the same class heretofore usually adopted.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
The improved flushing cistern constructed substantially as described with
reference to the accompanying drawing.