Improvements in Flushing Apparatus for Closets, Urinals, Sinks, and the like.
Year: 1893

page_text: Date of Application, 29th Aug., 1893-Accepted, 14th Oct., 1893
COMPLETE SPECIFICATION.
Improvements in Flushing Apparatus for Closets, Urinals, Sinks,
and the like.
We EDWARD DUNCAN of Cecil Street Williamstown in the Colony of Victoria,
Australia, Carpenter GEORGE HENRY BENNETT of Bridge Road Richmond in the
said Colony Manufacturer and HENRY WILLIAM BRYANT of Douglas Parade
Williamstown aforesaid Doctor of Medicine do hereby declare the nature of our
invention for "IMPROVEMENTS IN FLUSHING APPARATUS FOR CLOSETS,
URINALS, SINKS AND THE LIKE and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement :-
"
The invention is intended for use in connection with water closets, urinals, the
cleansing of sinks and other like purposes.
For concise description the invention is divided into two parts, the first consisting
of the inlet valve for regulating the supply and pressure of the water drawn from
the supply pipes and previous to admission into the cistern hereinafter mentioned
and the second consisting of an automatically worked discharge valve connected
directly the closet pan or urinal intended to be cleansed.
Referring to the drawings
Fig. 1. shews a section of the closet with the cylindrical cistern Z and connections
with discharge valve N leading into the closet pan.
Fig. 2. is a back elevation of the closet shewing the valved cistern Z, also the
inlet and outlet valves P and N with the levers Y and Y' operating the same.
Fig. 3. shews a section drawn on the line C D Figure 5, of the inlet valve P with
the
the operating shaft or piston X, the upper shaft X' with its circling spring W,
dividing rubber disc across the main chamber of the valve, and the inlet and
outlet of the said valve.
Fig. 4. shews a section of the valve P with inlet and outlet ports drawn on the
line F of Figure 3.
Fig. 5. shews a plan of the valve P.
Fig. 6. shews a section drawn on the line G H Figure 7, of the outlet valve N
with its shaft or piston U, the rubber or leather washer T bedded on a metal disc S,
the main chamber R with inlet and outlet openings.
Fig. 7. is a plan of the same valve drawn on the line J. K. Figure 6.
Fig. 8. is a plan of the valve N.
And
Fig. 9. shews a section of the same valve drawn on the line L M, shewing also
the lugs O for screwing the same in position.
The inlet valve P is constructed preferably of brass or gun metal and consists of
a supply pipe J connected with the water supply leading into a lower chamber
which is again connected by a narrow opening with the main chamber as shown in
the drawing. This main chamber has an outlet K leading by a bent U shaped pipe
or syphon trap into a cistern (hereinafter described and into which a supply of
water is forced or compressed every time the valve is used) and is divided across its
widest part by a rubber or other flexible disc or washer V which is tightly held in
position round its outer circumference by the parts of the casing between which the
edges of the disc is held being tightly screwed together as shewn in the drawings.
The connection between the lower and upper chambers is closed by an
india rubber or leather washer Q cushioned on the edges of the opening to the
lower chamber. This washer is fixed on a metal plate by an ordinary washer or
nut and is lowered or raised by the shaft or piston X running up through the india
rubber disc or washer V dividing the main chamber through a water tight slot or
opening and secured thereto on the upper side by a nut. The lower portion of this

page_text: shaft is chambered or grooved so as to allow of the inflow of water when the shaft
is compressed. The end of the shaft X projects somewhat above the nut and
receives the lower end of the spiral spring W. The upper end of this spring is
cushioned against the lower end of the operating piston X'. This last named
piston X is connected by means of a pin or pivot with the hinged lever Y and is
raised or compressed by the seat of the closet.
The outflow valve is also constructed of brass, gun or other metal and consists of
a main chamber R R, with a port opening from the bottom part through which the
water is received, and another opening connected by a bent U shaped pipe or
syphon trap with the pan or vessel, and through which the water is forcibly
discharged. A rubber or leather washer T bedded on a metal disc S, and connected
with the shaft or piston U passing up through a water tight stuffing or packing box,
opens or closes the inlet to this valve. The upper end of the shaft U is connected
with the lever Y₁ by means of a pin and is worked or operated by the lid of the
closet as it is opened or closed. The seat of the closet being compressed or lowered
the inlet valve is thereby opened and the water allowed to flow into the valved
cistern, the outlet valve being then closed, and when the compression is released the
outlet valve is opened and the inlet valve closed.
The inlet and outlet valves are both connected with a closed cistern Z which for
preference is formed of a water tight cylinder or pipe which may be fixed at the
back of the closet as shewn in the drawings or in any other convenient position; the
lower end of such cistern being always kept above the level of the closet seat.
I furnish this cistern with a ball cock slide or clack valve as shewn at Z' for
allowing of the escape of the air up to a certain point on the inrush of water. Lugs
are provided as shewn at O for screwing the valve in position.
The action is as follows:-Pressure being applied to the closet seat the inlet
valve is opened by the lowering of the shaft X and water is thereby admitted through
the opening J into the valve passing up through the smaller opening into the main
chamber and thence through the pipe or port K up into the valved cistern Z. The
air in such cistern is allowed to escape up to the point of connection with the clack
valve Zas shewn on plans, after passing which point all remaining air is
compressed in the cistern. When the cistern is fully charged the pressure operates
on the rubber disc V in the main chamber of the valve and thereby raises same to
its normal position and shuts off and closes the supply. By this means a pressure
of about 20 pounds (or any other pressure that may be required) can be maintained
although the pressure at the source of supply is 100 pounds or over.
The pressure being removed from the seat, the outlet valve is thereby opened by
the shaft U being upraised by the pressure of water on the washer T and the valve
being opened the water rushes into the pan of the closet with great force and
thereby cleanses the same. The bent U shaped pipes or syphon traps to both the
inlet and outlet valves retain sufficient water to effectually stop the escape of any
gases that may accumulate, thereby effectually cutting off all connection between
the pan and the water supply and effectually preventing the contamination of the
water in the supply pipe.
We would have it understood that we do not confine ourselves to the exact details
as hereinbefore set forth as the same may be varied or slightly departed from
without interfering with the principle of our invention and by a very slight
modification in details the invention can be applied to urinals, sinks &c.
Having now particularly described and ascertained the nature of our said inven-
tion and the manner in which the same is to be performed we declare that
what we claim is
1. In an inlet valve consisting of main chamber having a dividing disc of rubber
or flexible material and ports for the admission and ejection of water, the shaft ✗
and operating piston X with the spiral spring W for regulating the pressure and
force of the supply of water substantially as described.
2. An outlet valve (in combination with an inlet valve) for the discharge of
5

page_text: water, consisting of a main chamber with inlet and outlet ports operated by a shaft
and disc or washer for closing such inlet port substantially as and for the purposes
described.
3. The combination of the inlet and outlet valves as described with a valved
cistern whereby water is stored and compressed for flushing purposes such pressure
being thereby maintained at an equable degree substantially as described.
4. A closed cistern having a valve therein closed by a ball slide or clack valve
for the discharge of air up to any given point substantially as and for the purposes
described.
5. The combination of the inlet and outlet valves each fitted with the bent U shaped
pipes or syphon traps for the purpose described by means of which the contamination
of the water supply by contact with foul and injurious gases is effectually prevented
and forming and affording a perfect sanitary means of flushing closets, sinks &c. and
cleansing the same substantially as described.
Dated this
T11000
EDWARD DUNCAN,
GEO. H. BENNETT,
H. W. BRYANT,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.