An Improved Flushing Valve for the Cisterns of Water Closets, Urinals, and the like.
Year: 1887

page_text: Date of Application, 21st Jan., 1887
Complete Left, 20th Oct., 1887
Complete Accepted, 22nd Nov., 1887
PROVISIONAL SPECIFICATION.
An Improved Flushing Valve for the Cisterns of Water Closets,
Urinals, and the like.
1, JOHN STEWART 5 Dundee Terrace Edinburgh Plumber, do hereby declare the
nature of this invention to be as follows :-
It consists of an ordinary ground valve A to fit in the bottom of a cistern, above
this valve is fixed by means of supports a cup shaped vessel B, inverted, the mouth of
which is covered with a flexible diaphragm. To the centre of this diaphragm is
an attachment for the purpose of raising the valve. There is, a small inlet pipe to
this cup, with a regulating cock C, also a small outlet pipe led down to where the
Hushing is to take place. At this point a cock or valve D is fixed with the necessary
ports to distribute the water flowing through into the two divisions of a receiving
vessel E, and from thence alternately discharged through the waste pipe F as the ports
are changed. This receiving vessel is in the form of two hollow semi-spheres, joined
together with a flexible diaphragm between. Two pipes are led into this vessel one to
each compartment from two of the ports in the aforementioned cock or valve.
This apparatus will be used either for single or double flushing purposes, and the action
of it is as follows-The cistern being filled with water, it enters the vessel B through
the regulating cock C, from which it passes down through the small outlet pipe to the
valve D, passing through the open port of this valve into one of the compartiments of
the receiver E. On reversing the ports of the valve D, the water in this compart-
ment is discharged through the waste pipe while the other compartiment is being
filled. By the weight of the column of water in the pipe leading down from the
vessel B in the cistern, a vacuum is caused therein, and thereby raises the valve A.
As soon as the water ceases to enter the compartment of the receiver E, the vessel B
fills up and lowers the valve A. The amount of flush is regulated by the regulating
cock C. To give a second flush the ports are reversed, and so on vice-versa.
Reference is made in the foregoing description to a plan of the apparatus
accompanying this application.
Dated this Nineteenth day of January Eighteen hundred and eighty sovan
:

page_text: An Improved Flushing Valve for the Cisterns of Water Closets,
Urinals, and the like.
I JOHN STEWART, 5 Dundee Terrace Edinburgh, Plumber, 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:-
It consists of a ground valve A to fit in the bottom of a cistern, above this valve
is fixed by means of supports a cup shaped vessel B inverted, the mouth of which is
covered with a flexible diaphragm. To the centre of this diaphragm is an attachment
for the purpose of raising the valve. There is a small inlet pipe to this cup shaped
vessel with a regulating arrangement, also an outlet pipe led down to where the
flushing is to take place. At this point a cock or valve D is fixed with the necessary
ports to distribute the water flowing through into the two divisions of a receiving
vessel E and from thence alternately discharged through the waste pipe F as the
ports are changed. This receiving vessel is in the form of two hollow semi-spheres
joined together with a flexible diaphragm between. Two pipes are led into this vessel,
one to each compartment from two of the ports in the aforementioned cock or valve.
This apparatus will be used either for single or double flushing purposes. The
action of it is as follows:-The cistern being filled with water, it enters the vessel B
through the inlet pipe with the regulating arrangement marked from which it
passes down through the outlet pipe to the valve D, passing through the open port of
this valve into one of the compartments of the receiver E, on reversing the ports of
the valve D the water in this compartment is discharged through the waste pipe,
while the other compartment is being filled. By the weight of the column of water
in the pipe, leading down from the vessel B in the cistern, a vacuum is caused
therein, and thereby raises the valve A. As soon as the water ceases to enter the com-
partment of the receiver E the vessel B fills up and allows the valve A to close.
The amount of flush is regulated by the arrangement on the inlet pipe, which
increases or diminishes the size of inlet. To give a second flush, the ports are simply
reversed, and so on vice-versa.
Reference in the foregoing description is made to the plan of the apparatus, which
accompanied the application for provisional protection.
Having now particularly described and ascertained the nature of my invention, and
in what manner the same is to be performed, I declare that the features of novelty
I claim are:-
(1) The control exercised over the valve in the cistern caused by the weight of a
column of water in a pipe.
(2) The automatic action which stops the flow of water in the foresaid pipe,
allowing the valve to close when the fixed quantity of water has passed.
(3) The simplicity of construction & in manipulation.
Dated this Nineteenth day of October Eighteen hundred and eighty seven.