Improvements in or relating to syphons
Year: 1894

page_text: Improvements in or relating to syphons.
JOHN DAVEY Engineer Water Works Hitchin Herts. I do hereby declare the
nature of this invention to be as follows:-
This invention is applicable to most syphons but I will describe it as applied to
a flushing cistern for water closets &c.
I find that considerable difficulty exists with syphons as generaly constructed in
getting them to stop at the proper moment owing to the cistern filling by the ball
cock, they sometimes go on dribbling for hours after being used.
Also by a partial pull they are started dribbling and wasting water until
effectualy started.
In my improved syphon cistern in conjunction with the syphon and flushing pipe,
I employ a seperate compartment which is in communication with the syphon and
flushing pipe, into which a suitable quantity of water is lifted or forced to start the
syphon to work. The following is a discription of its action.
In the accompanying drawings in which I have represented as examples my
invention carried into practice
Fig. 1 is a plan. Fig. 2 and 3 are longitudinal sections. Fig. 4 a transverse
section.
A is the cistern containing the charge of water for flushing. B is n box
communicating with cistern A. in which is a plate or piston C. actuated by
levers D and E. By pulling down lever D the water in box B is lifted over the
partition F into the seperated compartment G. and flows on to well G¹. The
water automaticaly lifts the ball or valve H and charge the flushing pipe I which
starts the syphon to work in emptying the cistern.
A noust. 20+k_1801
Improvements in or relating to Syphons.
JOHN DAVEY Engineer Queen Street Hitchin, Herts do hereby declare the
nature of this invention and in what mauner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
This invention is applicable to most syphons, but I will describe it as applied to
a flushing cistern for water closets &c.
I find that considerable difficulty exists with syphons as generally constructed, in
getting them to stop at the proper moment, owing to the cistern filling by the
ball cock, they sometimes go on dribbling for hours after being used. Also by a
partial pull they are started dribbling and wasting water until effectively started.
In my improved syphon cistern in conjunction with the syphon and flushing pipe,
1 employ a separate compartment, which is in communication with the syphon and
flushing pipe, into which a suitable quantity of water is lifted, or forced, to start
the syphon to work. The following is a description of its action.

page_text: In the drawings left with the Provisional Specification, in which I have repre-
sented as examples my invention carried into practice,
Fig. 1 is a plan, figs. 2 and 3 are longitudinal sections, Fig. 4 a transverse
section.
A is the cistern containing the charge of water for flushing, B is a box
communicating with cistern A, in which is a plate, or piston C, actuated by
levers D and E. By pulling down lever D, the water in box B is lifted over the
partition F, into the separated compartment G, and flows on to well G. The
water automatically lifts the ball, or valve H, and charges the flushing pipe I,
which starts the syphon to work in emptying the cistern.
The valve I, may be made in and of any suitable form and material, so as to be
lifted by the water that starts the syphon to work, and automatically closes when
the syphon is started, or the valve H, may be mechanically opened and shut. The
valve H drops on to its seating as shewn in Figs. 1, 2 and 3, before, the water is all
emptied out of the well G'.
To empty the well G₁ I make a hole, or aperture through the valve H, or
through its seating, so that the well G¹ empties itself by the time the syphon has
discharged any given quantity of water from the cistern. As soon as the water is
all emptied out of the well G', the air enters through the same opening, and stops
the syphon from discharging any more water.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
The combination with a syphon of a separate compartment as shewn by letters G,
and G', and a valve H, as herein described and illustrated.