Improvements in and connected with Water Waste Preventers.
Year: 1892

page_text: Date of Application, 11th July, 1892
Complete Specification Left, 11th Apr., 1893-Accepted, 13th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in and connected with Water Waste Preventers.
I, SAMUEL JOHNSON 7 Hillmartin Villas Wood Green Engineer do hereby
declare the nature of this invention to be as follows:-
A cistern the supply to which is regulated by the usual ballcock, the discharge
-Two
being effected by means of a syphon set in action in the following manner :-
valves attached to a lever are used-one valve (called the inner valve) being inside
the discharge arm of the syphon-the other valve (called the outer valve) being in
the cistern at the opposite side of the lever fulcrum.
When the outer valve is opened by means of a pull upon the lever, the inner
valve is closed and the water is conveyed through a duct into the syphon. The
inner valve being raised shuts the outer valve, starts the syphon and the contents
of the cistern are discharged.
Sometimes a single valve is used, to which is attached a "plunger," and when
this valve is raised the water is conveyed to the syphon but the "plunger" prevents
its exit until the valve is closed again.
SAMUEL JOHNSON.
COMPLETE SPECIFICATION.
Improvements in and connected with Water Waste Preventers.
I, SAMUEL JOHNSON of 7 Hill Martin Villas, Wood Green in the County of
Middlesex, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
This invention relates more particularly to a flushing cistern to be used with the
water-closet apparatus described in the Specification of my Patent for improve-
ments in and connected with the flushing of water closets, dated 13th Nov. 1891,
No. 19652, but the invention is equally applicable to any other kind of water-closet
apparatus.
As part of the said apparatus, a double valved cistern is described in the said
Specification, such cistern consisting of a vessel divided into two compartments,
say a, supply compartment and a flushing compartment, each provided with an
outlet valve, the two valves being operated simultaneously, one to close and the
other to open, as the case may be, to let the water run from the supply to the
flushing compartment, or to flush.
This arrangement has its disadvantages, inasmuch as it necessitates a vessel of
double capacity, and too much time is taken up in getting the water from the
supply to the flushing compartment.
Now, the object of this invention is to overcome these disadvantages, which I
effect by employing a single capacity cistern having a double valve arrangement in
combination with a syphon.
The two valves are carried at the opposite ends of a lever, and one valve is placed
inside the discharge arm of the syphon, and the other valve so as to close an
opening to a passage or duct in connection with the syphon.
The syphon valve is below the duct, so that when this valve is closed and the
cistern valve open, water will run from the cistern, and fill the duct and the
discharge arm of the syphon, to the level of the water in the cistern.
When the syphon valve is raised and the cistern valve closed, the water in the

page_text: duct and the discharge arm of the syphon will rush out, causing a vacuum in the
syphon, which is immediately filled by the water from the cistern, and the syphon
is set to work to discharge the contents of the cistern.
In the accompanying drawing,
Fig. 1 shews a flushing cistern constructed according to this invention, in its
normal state.
Fig. 2 shews the position of the parts while the duct and syphon are filling;
and,
Fig. 3 indicates the syphon discharging.
A is the cistern, which is provided with a ball cock in the usual way.
B is the discharge arm of the syphon, and B' is the cap piece forming the inlet
arm, and completing the syphon, which is preferably placed at one end of the
cistern.
C is a duct, which connects the cistern at its lower part with the discharge
arm B, either outside or inside the cistern, as may be desired.
The inlet to this duct C is closed by a valve D attached, by a rod, to one end of
a weighted lever E. At a point below its connection with the duct C, the discharge
arm B is provided with a seat for a second valve D', which is connected by a rod
with the other arm of the lever E.
In this case, the valve rod passes through an opening a, or one of a series of
openings, made in the top of the cap-piece B¹.
This opening a (or openings) answers another purpose, viz., to serve as an outlet
for the air, when the duct C and the discharge arm B are filling with water (see
Fig. 2).
The openings a are closed, when the discharge takes place, by a disc valve b
on the valve rod, as will be seen in Figs. 1 and 3, or in any other convenient
manner.
The lever E is rocked in the manner described in the Specification of Patent
before mentioned, or in any other convenient manner.
One advantage (out of many) of the above described arrangement, is, that the
discharge of the syphon may be arrested at any moment (in case a full flush is not
required) by pulling on the rod or chain c connected with the lever E. The
valve Di would then stop the discharge from the arm B', while the opening of
the valve would break the vacuum in the syphon, and the water enclosed by
the cap-piece will run back until it attains the level of the water in the cistern.
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 :-
1. In a single-capacity flushing-cistern, the combination with a syphon of a duct
or passage open at one end to the cistern, and connected at the other end with the
discharge arm of the syphon, and a double valve arrangement, one valve being
adapted to close the discharge arm of the syphon below the duct, and the other
valve to close the inlet to the duct, as and for the purpose set forth.
2. A flushing cistern for water closets, constructed, arranged, and operating,
substantially as herein shewn and described.
1000