Improvements in Syphon Cisterns.
Year: 1896

page_text: Date of Application, 18th Jan., 1896
Complete Specification Left, 19th Oct., 1896-Accepted, 28th Nov., 1896
Improvements in Syphon Cisterns.
I, HENRY ISIDORE DAKIN of No. 4 Grand Parade, Putney, in the County of
Surrey, Sanitary Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention refers to syphon cisterns for use in water closets and the like and
the object thereof is to produce a syphon cistern which shall be quick in action and
yet not make the usual objectionable noise.
The cistern is made with a well and the bell plunger or the like, actuated by a
weight and lever in the usual manner is made to fit comparatively closely to the
cylinder over which it works.. The syphon consists of two bent pipes the shorter
one of which is so arranged that its lower end is open to the well and near the
bottom thereof while its other end is connected to the other and longer bent pipe near
the junction of the latter with the bell cylinder. The longer bent pipe goes through
the bottom of the cistern and is connected to the flushing pipe in the usual
manner.
When the bell is pushed down it forces water up and over the longer syphon
pipe which starts the syphon action and as soon as the water has started from the
cylinder it is also drawn up the shorter syphon pipe and down into the longer
syphon pipe thus directly after the commencement of the syphon action the water
is drawn from these two sources. There being two sources of supply and thus a
large area for the inlet of the water to the syphon, the action is very rapid. When
the level of the water in the cistern sinks below the level of the bottom of the bell
air enters the cylinder which breaks the column of water and stops the syphon
action without noise. When the cistern is again filling up a small hole in the
top of the bell permits of the escape of air so that the water completely fills the
cylinder.
Dated th: 10th dove of I
OD 1006
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.
I, HENRY ISIDORE DAKIN of No. 4 Grand Parade Putney in the County of
Surrey Sanitary 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 :-
My invention refers to syphon cisterns for use in water closets and the like and
the object thereof is to produce a syphon cistern which shall be quick in action
and yet not make the usual objectionable noise.
Figure 1 of the accompanying sheet of drawings represents a syphon cistern
constructed according to my invention in part sectional elevation.
Figure 2 is a plan thereof.

page_text: is induced by the pushing down of the plunger, the construction may be such that
the syphon action may take place by raising the piston and in this case the
bottom of the cylinder is provided with openings to the cistern and the longer
syphon pipe E is connected to the cylinder near the top.
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 :-
1. A syphon cistern provided with a cylinder having mounted thereon a bell
with a small hole therein actuated by a weighted lever, a long syphon pipe connected
to such cylinder and to the flushing pipe and a shorter syphon pipe connected to
the longer syphon pipe substantially as described and shewn.
2. A syphon cistern provided with a cylinder having mounted thereon a cover and
having mounted therein a plunger with a plunger rod actuated by a weighted
lever, a long syphon pipe connected to such cylinder and to the flushing pipe and
a shorter syphon pipe connected to the longer syphon pipe substantially as described
and shewn.
3. The constructions of syphon cisterns shown on the drawings.
Ctober 1930.
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.