Delivery of Measured Quantities of Liquid.
Year: 1886

page_text: Date of Application, 28th Apr., 1886.
Complete Left, 13th Jan., 1887.
Complete Accepted, 15th Feb., 1887
RESERVE
Delivery of Measured Quantities of Liquid.
I CHARLES WILLIAM FARQUHAR of Holly Cottage Trafalgar Road Mosely near
Birmingham Warwick Commercial Traveller do hereby declare the nature of this
invention to be as follows:-
My invention relates to flushing tanks in which the water to he automatically
delivered in measured quantities flows into a tank containing a bell open at the bottom.
In the arrangement at present in use the bell covers a rising pipe which is open at the
top and at its lower end passes through the bottom of the cistern. into a deep trap
beyond which is the outfall. Within the rising pipe there is a small inner or relief
pipe independently trapped and passing into the outfall beyond the main trap. When
the water rises in the cistern the air in the bell is compressed and the water stand in
the cistern at a higher level on the outside of the bell than within it. When the
pressure is sufficient the water is blown out from the trap on the inner pipe, the
compressed air escapes thereby from the bell and is quickly replaced by water from
the cistern which quickly over flows the mouth of the rising pipe and descending it
sets up a siphon like action which continues until the cistern is empty.
; the
In some situations difficulties are experienced with these flushing tanks
compressed air is delivered from the bell into the outfall and should be able to find free
vent but when the flushing tank is improperly set this may not be the case and
failure ensures.
Again in some situations the suction of the water running away by the outfall is
sufficient to draw the water out from the trap of the relief pipe after it has been
refilled by the water passing out of the tank and then on the tank refilling no com-
pressed air is stored in the bell and from this cause the apparatus will fail to act when
muranorhe st

page_text: According to this invention these causes of possible failure are avoided by dispensing
with the inner pipe and its trap delivery to the outfalli and substituting for these a
trapped pipe open at both ends one end terminating within the upper part of the bell
above the water level and the other in a mouth on the outer side of the bell. A stream
of water is directed into the mouth and thence passes into the bell or in part overflowing
the mouth it falls direct in to the cistern. So the cistern fills and the pressure of air
in the hell increases until the trap on the inlet pipe is blown out; then the compressed
air escapes, water from the cistern rushes into the bell and escapes down the rising
pipe and the siphon like action which empties the cistern is set up.
A floating ball or other arrangement prevents the entrance of air into the bell by the
passage through which the compressed air escapes so that the siphon like action may
not be prematurely checked.
CARPMAEL & Co.,
Agents for the Applicant.
Delivery of Measured Quantities of Liquid.
I, CHARLES WILLIAM FARQUHAR of Holly Cottage, Trafalgar Road, Mosely near
Birmingham, Warwick, Commercial Traveller, 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 relates to flushing tanks in which the water to be automatically
delivered in measured quantities flows into a tank containing a bell open at the bottom.
In the arrangement at present in use the bell covers a rising pipe which is open at the top
and at its lower end passes through the bottom of the cistern into a deep trap beyond
which is the outfall. Within the rising pipe there is a small inner or relief pipe
independently trapped and passing into the outfall beyond the main trap. When the
water rises in the cistern the air in the bell is compressed and the water stands in the
.. cistern at a higher level on the outside of the bell than within it. When the pressure
is sufficient the water is blown out from the trap on the inner pipe, the compressed air
escapes from the bell and is quickly replaced by water from the cistern which quickly
overflows the mouth of the rising pipe and descending it sets up a 'siphon like action
which continues until the cistern is empty.

page_text: Figure 1 is a vertical section partly in elevation of the apparatus.
Figure 2 shows to a larger scale a section of a portion of the same.
A, A, is a bell, which by means of supports A' A', and screws and nuts A² A², is held
at a short distance above the bottom of a tank from which the delivery of the
measured quantity of water takes place, the quantity delivered at each operation
depends on the capacity of the tank. The single line X represents the bottom
of this tank. B is a delivery pipe having flanges B' upon it; this pipe passes
through a hole in the bottom of the tank and the screws and nuts A² A³, secure it in
such manner that the joint is watertight. The same screws and nuts also secure
against the bottom of the tank the deep trap Cinto which the lower end of the delivery
pipe B dips. D is an air pipe which, as the tank fills, allows air to escape freely from
the bell A, whilst water enters the same at the lower end. This goes on until the
water rises sufficiently high to cover the lower end of the air pipe D which then
becomes inoperative. E is the apparatus which 1 substitute for the inner relief pipe
hitherto employed. It consists of a U form pipe e entering the bell A, at the upper
part at e. This pipe at its other end is open or unenclosed and here a seat is provided
for a floating ball valve e preferably of india rubber. Above the hall a connection
is made with the pipe which supplies water to the apparatus. The water flows in
past the cone valve et which can be set to admit the water at any desired speed. The
water so entering fills the bent pipe e and then overflows into the tank, either within
the bell or exteriorally it matters not which. The tank so fills until the lower end of
the pipe D becomes immersed and then the air which remains confined in the upper
part of the bell A and in the delivery pipe B becomes compressed. Before the water
within the bell reaches to the top of the delivery pipe D (although it stands at a higher
level in the tank outside) the pressure of the air in the bell becomes sufficient to force
the water out of the bent pipe e. The air then freely escapes from the bell and from
the delivery pipe and the water rushes into the bell to equalize the level within and
without. The water rises above the top of the delivery pipe B and descends by it, and
in this way a siphon like flow is established. The water passes from the tank beneath
the underside of the bell A, then up between the bell and the exterior of the delivery
pipe, down through this pipe into the trap and thence to the outlet at G. This

page_text: continues until the tank is
lower edge.
emptied and air then reenters the hell beneath its
In place of the ball valve e valves. of. other descriptions may be employed, but a
floating valve I believe to be the most suitable. The valve serves to prevent air
entering the bell by the pipe e
In this arrangement it is impossible that the working of the apparatus should be
deranged by any undue pressure resisting the free escape of the air from the bell,
as may happen where a relief pipe opening to the outfall is employed. My
arrangement also ensures that the bend or trap of the relief pipe shall always be
properly filled as the water rises in the tank. The parts A and B it will be seen
constitute a delivering siphon; this can be made in other forms.
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
In a flush tank or apparatus for the automatic delivery of measured quantities of
liquid, the relief apparatus E in combination with the hell A, delivery pipe B and trap
Cor other equivalent parts constituting a siphon and trap substantially as described.
Witness,
WILLIAM EDWARD FARRER.
CHARLES WILLIAM FARQUHAR.
Carpmael & Co.,
Agents for the Applicant.