Improvements in the Construction of Flushing Cisterns.
Year: 1891

page_text: Date of Application, 11th June, 1891
Complete Specification Left, 10th Mar., 1892-4ccepted, 16th Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Flushing Cisterns.
We, SAMUEL GRATRIX JUNIOR AND BROTHER LIMITED, Lead Merchants
and HENRY BROCKLESBY, Foreman both of Alport Town Mauchester in the
County of Lancaster do hereby declare the nature of this invention to be as
follows:-
This invention relates to the construction of flushing cisterns such as are used in
connection with water closets and urinals and for other similar purposes where it is
required to allow of the sudden escape or flow of a definite amount of water.
The object of the invention is so to construct and arrange a single cistern or
chamber of the required capacity with the necessary valves and levers that the
same movement of the lever which opens the outlet valve shall previously close
the inlet valve so that upon simply pulling down the lever the whole contents of
the cistern or vessel will be discharged and that no more water can be admitted
to the cistern until the lever is released, so that no waste of water can take
place.
For this purpose I arrange a cistern or chamber with an outlet or discharge
vaive acted upon by the lever and an inlet valve acted upon by a ball lever.
In connection with this ball valve or cock I have another admission valve which
acts between the supply pipe and the ball valve and is jointed to the pull down
lever.
The latter passes through a forked bracket fixed to the body of the inlet valve,
and from its inner end is hung a weight, through a hole in which passes the
spindle of the weighted discharge valve which spindle is provided with a collar
above the weight.
The action of the apparatus is as follows:-Upon pulling down the lever it first
closes the admission valve which is linked to it outside the forked bracket the bottom
of which latter acts as a fulcrum to the lever.
As soon as this valve is fully closed the pin of the link becomes the fulcrum of
the lever, the inner end of which rises until the weight comes against the collar on
the spindle of the discharge valve which it then lifts, and opens the valve so as to
discharge the contents of the cistern.
Upon releasing the pull down lever the weight first descends so as to allow the
discharge valve to close and then sliding further down the spindle, it raises the other
end of the lever and opens the admission valve so as to admit water to the ball
cock which is now open.
A syphon pipe may be provided in connection with the discharge pipe to insure
the complete discharge of the contents of the cistern, otherwise the lever would
have to be held down to obtain the full discharge of water until the cistern is
completely emptied.
T
1001
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction of Flushing Cisterns.
We, SAMUEL GRATRIX JUNIOR AND BROTHER LIMITED Lead Merchants
and HENRY BROCKLESBY Foreman both of Alport Town Manchester in the
County of Lancaster, 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 :-
This invention relates to the construction of flushing cisterns such as are used in
connection with water closets and urinals and for other similar purposes where it is
required to allow of the sudden escape or flow of a definite amount of water.
The object of the invention is so to construct and arrange a single cistern or
chamber of the required capacity with the necessary valves and levers that the
same movement of the lever which opens the outlet valve shall previously close
the inlet valve so that upon simply pulling down the lever nearly the whole
contents of the cistern or vessel will be discharged and that no more water can be
admitted to the cistern until the lever is released, so that no waste of water can
take place.
The invention will be readily understood on reference to the accompanying
drawings and from the following description thereof.
On the drawings Figs. 1 and 2 illustrate respectively in longitudinal and
transverse section a flushing cistern constructed according to our invention
Fig. 3 is a plan view thereof and
Fig. 4 a detached view of the admission valve hereafter more particularly
described.
We arrange a cistern or chamber a with an outlet or discharge valve 6 acted
upon by the lever e and an inlet valve d acted upon by a ball lever e. In connection
with this ball valve or cock d we have another admission valve f which acts
between the supply pipe g and the ball valve d and is jointed to the pull down
lever c.
The latter passes through a forked bracket fixed to the body of the admission
valve fand from its inner end is hung a weight c¹ through a hole in which passes
the spindle of the weighted discharge valve which spindle is provided with a
collar 62 above the weight.
The action of the apparatus is as follows:-Upon pulling down the lever cit
first closes the admission valve f which is linked to it at the point outside the
forked bracket h the bottom of which latter acts as a fulcrum to the lever c.
As soon as this valve f is fully closed the pin * of the link or rod f' becomes the
fulcrum of the lever c the inner end of which rises until the weight comes against
the collar 2 on the spindle b' of the discharge valve b which it then lifts and opens
the valve so as to discharge the contents of the cistern.
Upon releasing the pull down lever c the weight c¹ first descends so as to allow
the discharge valve b to close and then leaving the collar and sliding further
down the spindle it raises the other end of the lever c and opens the admission
valve so as to admit water to the ball cock d which is now open.
A syphon pipe i (see Figs. 1 and 3) may be provided in connection with the
flushing chamber a which being of a large capacity with regard to the inlet and
outlet will cause an immediate suction in the syphon pipe and thus ensure the
complete discharge of the contents of the cistern a otherwise the lever c would
have to be held down (to obtain the full discharge of water) until the cistern a is
completely emptied.
In order to prevent leakage through the stuffing box f2 through which the rod
or spindle f¹ of the admission valve f passes we provide the said rod or spindle
with a washer 3 of india rubber or other suitable material which (when the valvef
is raised to admit water under pressure to the ball cock d) comes against the under
side of the stuffing box f and forms a watertight joint at that point.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what we
claim is-
1. The combination, with the discharge valve and pull down lever of a flushing-
cistern, of a valve, admitting water to the ball cock and so connected to the said
lever that it will be closed before the discharge valve is opened substantially as
hereinbefore described and illustrated by the annexed drawings.
2. The improved flushing cistern constructed and operating substantially as
hereinbefore described with reference to the annexed drawings.
Dated this 9th day of March 1892.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.