Year: 1887

page_text: Date of Application, 11th May, 1887
Complete Left, 10th Feb., 1888
Complete Accepted, 16th Mar., 1888
I JAMES JACKSON, Commercial Traveller, of No. 4 East Bank Terrace, Chorlton-
cum-Hardy in the County of Lancaster do hereby declare the nature of this
invention to be as follows:-
To prevent the waste of water through leakage I carry the top of syphon or outlet
pipe slightly above the top of cistern, so that leakage from the Ball-cock when the
cistern is not in action will flow over the sides of cistern before flowing down the
flushing pipe, and to enable me to discharge the contents of cistern I place over
the upright pipe or syphon a cap or cylinder which goes to the bottom of cistern, and
inside the upright pipo or syphon I place near the bottom a slanting clack valve
which when the cap or cylinder is lifted either by weight or pull prevents the air
getting up the pipe thereby causing a vacuum in the cylinder which at once becomes
filled with water overflowing the flushing pipe and in this way emptying the cistern
of the quantity of water arranged for before stopping.

page_text: COMPLETE SPECIFICATION.
Improvements in Water Waste Preventing Syphon Cisterns.
I, JAMES JACKSON of 4, East Bank Terrace Chorlton-cum-Hardy, do hereby
declare the nature of my invention and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement :-
To prevent the waste of water through leakage I carry the top of syphon or outlet
pipe slightly above the top of Cistern so that any leakage from the Ball Cock when
the Cistern is not in action will flow over the side of Cistern before flowing down the
flushing pipe. And to enable me to discharge the contents of Cistern, I place over
the upright pipe or syphon a cap or cylinder which goes to or near the bottom of
Cistern and inside this upright pipe or syphon I place near the bottom a slanting
clack valve or other valve closing self-actingly so that when the cap or cylinder is
lifted either by weight or pull such closed clack or valve prevents the air getting up
the pipe thereby causing or ensuring a vacuum in the cylinder which at once becomes
filled with water overflowing the flushing pipe and in this way emptying the cistern
of the quantity of water, arranged for before stopping.
On the accompanying drawing Figs. 1. and 2. are side sectional views and Fig. 3.
is a plan view of my improved syphon cistern. Fig. 4. is a perspective view of
the same cistern shown partially broken to disclose the top of the upright pipe or
syphon.
In all the views a is the cistern fitted with the usual ball cock c. d is the upright
or outlet pipe the top of which is by preference enlarged to form a hopper e and the
top of which hopper extends up rather higher than the sides of the cistern as
illustrated so that any leakage from the ball cock will in case of the ordinary over
flow pipe being out of order-flow over the side of the cistern instead of escaping
down the flushing pipe-and thus give a visible indication of the existence of such
leakage. Over the mouth of this hopper or upright pipe d I place a cap or cylinder f
formed of cast or sheet metal or of other suitable material and which extends down to
or near to the bottom of the cistern and thus constitutes the shorter arm of-an annular
syphon pipe the longer arm of which syphon is the upright or outlet pipe d. This
cap f. is pivoted or connected to the arms g of the weighted actuating lever c and in
its normal position as illustrated in Fig. 1. Inside the upright or outlet pipe d I place
by preference near the bottom a slanting clack valve h which forms the essential
feature of my invention. This valve may be formed entirely of metal or may be faced
with leather, india-rubber or other suitable material and being hinged loosely in
position is thus designed to self-actingly close the communication with the outlet
pipe d. In this manner I secure that when by pulling down the operating chain c¹
the cap or cylinder f is lowered into the position illustrated in Fig. 2. and is then
lifted again a vacuum shall be created in the cylinder f and which being unable to
draw air up the closed syphon pipe instantly becomes filled with water from the
cistern-overflowing the hopper e opening the valve h as illustrated in Fig. 2. and in
this way emptying the cistern of the definite quantity of water arranged for before
stopping.

page_text: On sheet 2 of the accompanying drawing-I illustrate several modifications of my
invention, but all depending for their action upon the use of a self-closing valve.
The same letters of reference as herein before described are used to indicate similar
parts in all the Figures.
Fig. 5 represents a syphon cistern upon my improved principle in which the
slanting clack valve is mounted in a valve box j fitted with a cover k capable of
removal to obtain access to the valve.
Figs. 6 and 7 also represent similar syphon cisterns but instead of a hinged clack,
a ball valve is substituted and which falls by its own gravity on to its seating as
illustrated.
In Figs. 8 and 9 1 illustrate two other modifications of my improved syphon cistern
in which the ball valve m is enclosed in a pocket n and which being always left filled
with water after each flushing so floats the buoyant valve m against its seating-and
closes the communication with the outlet pipe.
e
In all these views the ball or other valve is illustrated in the closed position but it
will be readily apparent that in case of water overflowing the hopper é of the cistern
that such valve will form no obstruction to the passage of the water its function
being only to keep the communication closed until the water in the cistern has over-
topped the syphon as hereinbefore described. Although I have only illustrated the
valve as applied to that part of the outlet pipe d, situated inside the cistern and
where I prefer it as forming with the cistern a complete apparatus in itself yet it will
be obvious that such valve may be fixed with more or less useful effect at any point
in the length of the outlet pipe d between the cistern and the closet or other place
required to be supplied.
Having thus particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I wish it to be
distinctly understood that I make no claim to any parts of the several syphon cisterns
hereinbefore described and illustrated on the accompanying drawing separately and
distinctly from my improved valve application-nor do I confino myself to the use of
a clack or ball valve as other forms of valve may be similarly applied without
departing from my invention, but what I do claim is :-
1st. In the construction of a syphon cistern the employment of a clack or other
valve mounted in the outlet pipe and operating substantially as and for the purpose
hereinbefore described.
2nd. The use and application to the outlet pipe of syphon cisterns of a clack or
valve-substantially as and for the purpose hereinbefore described and illustrated on
the accompanying drawing.
3rd. The general construction and arrangement of syphon cisterns when fitted with
a valve in the outlet pipe substantially as hereinbefore described and illustrated on
the accompanying drawing.