Improvements in Flushing Cisterns.
Year: 1896

page_text: Date of Application, 20th Aug., 1896
Complete Specification Left, 20th May, 1897-Accepted, 26th June, 1897
Improvements in Flushing Cisterns.
I, RICHARD BROWN EVERED, of 27 to 31 Drury Lane, in the County of
Loudon, Brass Founder, do hereby declare the nature of this invention to be as
follows:-
My improvements are more especially intended for use with flushing cisterns of
the kind set forth in the Specifications of prior Patents No. 22348 dated the
19th day of November 1894 and No. 9330 dated the 11th day of May 1895. The
said improvements are however applicable to other syphonio flushing cisterns.
The chief object of my present invention is to provide flushing cisterns with
means whereby an "after flush" can be obtained in a more effectual manner than
heretofore and without the liability of continuous flushing and consequent waste of
water taking place.
As is usual with cisterns provided with an after flush arrangement I form the
cistern with an after flush compartment which is separated from the main body of
water in the cistern by a partition over which the said main body of water overflows
to fill the after flush compartment. Communicating with this compartment and
reaching almost to the bottom thereof is an after flush syphon the longer limb of
which communicates with the descending limb of the main syphon. The float of
the inlet ball valve is located within the after flush compartment so that the inlet
of water to the cistern is not stopped until the said compartment is sufficiently filled
with water.
I provide the inlet end of the after flush syphon, (that is to say the end that dips
into the after flush compartment) with means whereby such end is closed when the
level of the main body of water in the cistern reaches nearly to the upper edge of
the partition, so that the continuance of syphonic action during the filling of the
after flush compartment is prevented.
The aforesaid means may consist of a flap or plate connected to a pivoted arm
having at its free end a flout which is acted upon by the rise and fall of the main
body of water in the cistern so that as the level of the main body of wator rises the
said flap or plate closes the inlet oud of the after flush syphon and opens it as the
level of the main body of water descends.
Instead of employing a flap or plate I may provide the inlet end of the after
flush syphon with an external sliding tube which is connected to the aforesaid
pivoted float arm so that as the latter rises and falls it will cause the said sliding
tube to move up and down to open and close the mouth of the said syphon. Or any
other suitable device controlled by the aforesaid pivoted float arm may be employed
for covering and uncovering the inlet end of the said syphon.
Dated this 20th day of August. 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, W.C., Agents for the Applicant.

page_text: improvements in Flushing Cisterns.
1, RICHARD BROWN EVERED, of 27 to 31 Drury Lane, in the County of
London, Brass Founder, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described aud
ascertained in and by the following statement :-
This invention relates to improvements in flushing cisterns and is applicable
more particularly to flushing cisterns of the kind set forth in the Specifications
of prior British Patents No. 22348 dated the 19th day of November, and No. 9330
dated the 11th day of May 1895. The eaid improvements are however applicable
to other syphonic flushing cisterns.
The chief object of my present invention is to provide for obtaining an "after
flush" in an effectual manner without the liability of continuous flushing and
consequent waste of water.
As is usual with cisterns provided with an after flush arrangement I form the
cistern with an after flush compartment which is separated from the main body of
water in the cistern by a partition over which the water flows to fill the after flush
compartment. Communicating with this compartment and reaching almost to the
bottom thereof is an after flush syphon the longer limb of which communicates with
the descending limb of the main syphou. The float of the inlet ball valve is
located within the after flush compartment so that the inlet of water to the cistern
is not stopped until the said compartment is sufficiently filled with water.
For the purpose of my invention I provide the inlet end of the after flush
syphon, (that is to say the end that dips into the after flush compartment) with
means whereby such end is closed when the level of the main body of water in the
cistern nearly reaches the upper edge of the partition and remains closed as long as
the water in the said main compartment is at the normal level.
In order that the invention may be clearly understood and readily carried into
effect I will proceed to describe the same moro fully by aid of the accompanying
drawings, in which
Figures and 2 are longitudinal vertical sections of two .constructions of
cistern, provided with slightly different arrangements for stopping the syphonic
action according to my invention.
a is the body of the cistern; a' the after flush compartment which is separated
from the main compartment a2 by a partition a over which the said body of water
flows to fill the after-flush compartment. 6 is the after-flush syphon which
communicates with the compartment a' and reaches almost to the bottom thereof.
The longer limb of this syphon communicates with the descending limb c of the
main syphon. d is the float or ball of the inlet valve d'. This ball is situated in
the after-flush compartment so that the inlet of water to the cistern by the valve d¹
is not stopped until the said compartment is sufficiently filled with water.
Referring now more particularly to Figure 1, the arrangement therein shown
for stopping the syphonio action comprises a plate e conuected by a rod e' to an
arme pivoted ate. The free end of this arm extends into the main compartment a
of the cistern, and is provided with a float e', so that as the water level in the main
compartment a' rises the plate e is caused to close the inlet to the alter flush syphon
thereby ensuring the cessation of the syphonic action and preventing its being
re-started until the water level in the niain compartment a of the cistern falls
as this compartment empties by the action of the main syphon when the handle of
:the cistern is pulled.
As the water level in the main compartment descends the float e sinks with it

page_text: and through the intervention of the rod e¹ the plate e is caused to uncover the inlet
of the after flush syphon so that it is free to perform in due course the after
flushing operation.
The movement of the plate e and the rod e' to which it is connected, is guided
by a ring e secured to the said rod and encircling the after flush syphon b.
Referring to the arrangement shown in Figure 2, instead of providing the inlet
end of the after flush syphon with a flap or plate, it is provided with an external
sliding tube or sleeve, ex operated by a separate float e. The said sliding tube is
connected by a rod e to the arm of the float, such arm being pivotally
connected at e to the partition a. The arrangement is such that when the float e
is elevated by the rise of the water in the compartment a', it will depress the sliding
tube ex into the position indicated in dotted lines, wherein it rests upon the bottom
of the cistern and closes the inlet or mouth to the syphon. When however the
float e falls by the emptying of the compartment a' it will cause the said sliding
tube to move up into the position shown in full lines so opening the inlet to
the syphon.
The parts represented in Figure 2 are in the position they occupy when the
handle of the cistern has been pulled and the main syphon set into action by the
elevation of the displacer.
Obviously any suitable device, other than that above described, controlled by the
aforesaid pivoted float arm, may be employed for covering and uncovering the inlet
end of the said after flush syphon.
The various parts shown in the drawings but not lettered or described are well
known and form no part of the present invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what mannor the same is to be performed, I declare that what I
claim is:
1. A flushing cisteru in which the after flush syphon is provided with means for
keeping its inlet ond closed so long as the water in the main compartment of the
cistern is at the normal level, substantially as described.
2. A flushing cistern provided with means for controlling the after flush
substantially as described with reference to Figure 1, or to Figure 2 of the
accompanying drawings, and for the purpose specified.
Dated this 20th day of May 1897.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, W.C., Agente for the Applicant..