IMPROVEMENTS IN CISTERN FLOAT VALVES
Year: 1884

page_text: COMPLETE SPECIFICATION.
Í ALFRED WATERS of The Paragon Works Vicarage Road Croyden in the
County of Surrey Sanitary Engineer do hereby declare the nature of my Invention
for "IMPROVEMENTS IN CISTERN FLOAT VALVES" and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement :-
My invention has for its object to obviate the necessity and expense of the long
levers and large sized 'balls or floats hitherto used for cistern float valves and by
ensuring greater certainty in the action of such valves to prevent waste of water
by leakage or imperfect closing.
In this class of valve as usually constructed the valve is opened on the falling
of the float lever by the pressure from the main which necessitates a great length
of lever combined with a large sized ball or float for ensuring sufficient leverage or
power on the rising of the water in the cistern to close the valve against the
pressure.
Now my invention consists in opening the valve against the pressure from the
main on the falling of the float lever by means of an eccentric (or lever) which is
formed on or attached to a spindle on the fulcrum end of the float lever, and works
in a yoke or strap on the valve spindle.
And in order that my said invention may be well understood I shall now proceed
particularly to describe the same reference being made to the accompanying
sheet of drawings like letters of reference indicating corresponding parts in both
figures.
Figure 1 is a longitudinal section of my improved cistern float valve and figure 2.
a plan thereof.
a represents a valve box containing the valve b which is formed with a triangular
shaped guide spindle c working through the cylindrical valve seating d and formed
at its outer end or other convenient part with a yoke or strap e In this yoke or
strap e works an eccentric f formed on or fitted to a spindle g one end of which
has its bearing in one side of the valve box a whilst its other end passes through
a cover h at the other side of the valve box a and is attached on the outside of
the latter to the fulcrum end of the float lever i at right angles thereto as shewn
in figure 2.

page_text: (Or in lieu of an eccentric working in a yoke or strap on the valve spindle cas
shewn, I may use a lever attached to the spindle g on the fulcrum end of the
flont lever i and working in a slot on the valve spindle c.)
By this arrangement on the falling of the water in the cistern the weight of the
float (which is weighted internally or otherwise) acting through its lever i causes
the eccentric fto force or open the valve 6 from its seating d against the pressure
from the main k.
On the rising of the water in the cistern the weighted float; has little or no
resistance to overcome beyond the friction of the parts owing to the pressure from
the main k, closing the valve b as the weighted float j is lifted by the water into
the position shown in figure .1. whereby a very short float lever and small sized
float will suffice besides ensuring the perfect closing of the valve b and so preventing
waste of water by leakage as now constantly occurring.
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 :-
In cistern float valves opening the valve against the pressure from the main by
an eccentric in combination with the float lever and weighted float substantially as
and for the purpose hereinbefore described and shown by the accompanying
drawing.
Dated this 19th day of February 1884.
1
ALFRED WATERS.
Edward W. Furrell, M. Inst. M. E.,
Agent,
Bank Buildings,
124, Chancery Lane, W.C.