Improvements, in and relating to Apparatus for Flushing Stenoh. Traps and other Passages and Receptacles, principally applicable to Water Closets and Sinks.
Year: 1894

page_text: Date of Application, 15th May, 1894
Complete Specification Left; 12th Feb:, 1895-Accepted, 23rd Mar., 1895:
PROVISIONAL SPECIFICATION.
Improvements, in and relating to Apparatus for Flushing Stenoh.
Traps and other Passages and Receptacles, principally applicable
to Water Closets and Sinks.
I, DAVID MORGAN, of No: 70. Elizabeth Street, Launceston in the Colony of
Tasmania, Engineer, do hereby declare the nature of this invention to be as
follows:
This invention relates to a certain extent to a prior one for which I obtained
British Letters Patent No. 13440, dated the Eleventh day of July One thousand
eight hundred and ninety-three.
It has been devised principally for the purpose of preventing water in the main
from being contaminated by the backward current of noxious gases from closets etc.,
to which my apparatus is attached whilst at the same time providing means whereby
a supply of water for household purposes can be withdrawn from the pipe which
supplies the water used for flushing purposes.
A further object of this invention is to provide a simple and inexpensive
contrivance which will automatically discharge a quantity of low pressure water
into the closet pan, drain, or other place to be flushed, above the back pressure
valve (which is placed as in my former invention, above the point of entrance of the
high pressure water supply pipe) and which will afterwards automatically open
communication between the high pressure main and the drain beneath said back
pressure valve.
According to this invention, the high pressure water supply pipe is bent so as to
forn water seal, having a back pressure valve at each end, the supply of water
for domestic purposes being withdrawn from between said valves.
Connected with the low pressure flushing pipe is a cistern, the down pipe from
which is fitted with a syphon, alongside the lower end of which is a valve adapted
to be readily opened or closed by a lever, cord and convenient handle, the object
being to start such syphon, and thus deliver water from the tank into the place to
be flushed. Inside this cistern is a smaller float cistern, having one or more small
holes in its lower end, so as to communicate with the main outer flushing cistern.
Inside the float cistern is arranged a float, which is free to slide up and down
upon a hollow valve spindle provided with collars near its upper and lower ends for
said float to act against. The upper end of this hollow spindle is by preference
made conical, and forms a valve which is pressed tightly against a valve seating
within the high pressure water flushing pipe, the object being to cut off the supply
of high pressure water until the float in the float cistern has fallen nearly to the
bottom, that is, until nearly the whole of the low pressure water has been discharged
by the next use of the apparatus.
Above the upper end of this hollow spindle is fitted a back pressure valve, which
normally prevents the possibility of any noxious gases passing from the drain back
into the water supply pipe, and above this back pressure valve an opening into the
atmosphere may be provided for ventilating purposes, said opening being closed by
said back pressure valve when the supply of high pressure water is turned on, as
above described.
The low pressure cisterns are re-filled by the water which passes from the water
supply nine down the hollow spindle of the float.

page_text: If preferred, this float may be arranged in a cylinder or cistern alongside the
pan of the closet or other place to be flushed, and be in open communication with
the drain.
By this means the high pressure supply will be turned into the drain only when
there is an obstruction therein, instead of, as in the former arrangement, being
delivered into it at each operation.
"
It will be easily understood that the invention above described can be readily
adapted for flushing the pans of water closets, sinks and other receptacles as well as
drains and other passages, whilst it can if required be utilised for the purpose of
flushing enclosed cesspits whenever they become filled to a certain height.
Dated this Fourth day of April One thousand eight hundred and ninety-four.
DAVID MORGAN,
By Ernest de Pass,
Chartered Patent Agent,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Apparatus for Flushing Stench
Traps and other Passages and Receptacles, principally applicable
to Water Closets and Sinks.
1, DAVID MORGAN, of No. 70 Elizabeth Street, Launceston, in the Colony of
Tasmania, Engineer, 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 a certain extent to a prior one, for which I obtained
British Letters Patent No. 13440 dated the Eleventh day of July One thousand
eight hundred and ninety-three...
It has been devised principally for the purpose of preventing water in the main
from being contaminated by the backward current of noxious gases from closets etc.
to which my apparatus is attached. ;
A further object of this invention is to provide a simple and inexpensive
contrivance which will discharge a quantity of low pressure water into the closet
pan, drain or other place to be flushed above the back pressure valve (which is
placed as in my former invention abore the point of entrance of the high pressure
water supply pipe) and which will afterwards automatically open communication
between the high pressure main, and the drain beneath said back pressure valve.
According to this invention, the high pressure water supply pipe is bent so as to
form a water seal having a back pressure valve at each end
Connected with the low pressure flushing pipe is a cistern, the down pipe from
which is fitted with a syphon, alongside the lower end of which is a valve adapted
to be readily opened or closed by a lever, cord and convenient handle, the object
being to start such syphon and thus deliver water from the tank into the place to
be flushed.
In open communication and at the same level as the pan of the closet is an open
cistern in which works a float adapted to operate a valve whereby pressure water
can be allowed to flow into the drain below a back pressure valve therein, said open
cistern being in communication with the pan of the closet so that in the event of the
drain becoming choked the water will rise in the pan, overflow into the cistern
alongside it and raise the float therein so as to open the float valve and; thus admit
pressure water into the drain below the back pressure valve before referred to.
In order to prevent all possibility of the foul gas from the sewer or drain

page_text: contaminating the water supply I lead the high pressure water supply pipe up to
the ordinary flushing cistern and connect it to a. Utrap having a ventilating pipe
connected to each leg of the U with a valve which closes the ventilating pipe when
the pressure water is turned on but opens it to the atmosphere when the pressure is
reduced.
In order to ensure this U being kept full of water notwithstanding the.evaporation
which takes place from it I provide a short pipe extending up to the level of the
water in said cistern and provided with a back pressure valve which opens to admit
water from the cistern to pass into the lower part of said U but which prevents the
escape of the high pressure. water.
"
Referring to the accompanying drawings,
A represents the pan of the closet and B the back pressure valve which is fitted
according to my former invention above referred to, just above the entrance into
the drain of the high pressure water supply pipe C preferably between the stench
trap D and the pau A whilst E represents the cistern which is in open
communication with the upper part of the pan A through the passage.e and. with
the drain pipe immediately below the pan through another pipe or passage e¹,
leading from the bottom of said cistern and fitted with a back pressure valve e².
Frepresents the pressure water supply main and g the pipe which supplies the
flushing cistern G in the ordinary manner whilst H H' represents a pipe which
supplies the high pressure water to the drain below the back pressure valve B said
pipe H being fitted with a float valve h the float of which is arranged to work
inside the cistern E so as to rise and turn on said valve when the water overflows
into said cistern from the pan that is whenever there is a stoppage in the drain.
.
The pipe H H is fitted with a U trap H2 in the cistern G each leg of said U
being fitted with a ventilating pipe h² which is closed by a valve h³ when the
pressure water is turned into the pipe H H. This U trap is provided with a short
pipe, opening into the cistern G below the level of the water therein and also
fitted with a valve which prevents the escape of pressure water from the
pipe H H but allows the water from the cistern G to pass into such U trap if
required when the pressure in said trap is withdrawn.
1 represents the usual float valve which is fitted upon the end of the pipe g which
supplies the cistern G with water whilst j, represents a syphon which is used in the
ordinary manner in connection with the flushing pipe J and K represents a
ventilating pipe which is fitted into the drain pipe and is provided with a back
pressure valve k¹. L represents the ordinary flood gate which is provided in the
drain to prevent the return of the sewage in the event of a flood.
After the closet has been used the cord, is drawn. as usual and in the event of
an obstruction being in stench trap D or pipes leading to the sewer, the wash down
water will rise in the pan A to waterway e and will flow through-said-waterway
to the cistern E. The float will then rise and open tap admitting water from
the supply pipe F at the pressure of main through the valves f, g, 43, and 4 which
forces the back pressure-valve B from the position shown until it closes the passage
which leads from the pan A to the stench trap D consequently all obstruction
laying between the lower face of the back pressure valve B and the outlet in the
drain will be subjected to the pressure of the water in the main and by said pressure
will be ultimately expelled from the drain into the sewer. When all obstructions
are removed the back pressure valve B will fall into its normal or open position and
the water in pan A and cistern E will flow to the stench trap D whilst the ball ¹
will close the valve when the valves fg', h³ and he will close against the possibility
of gas, air, or anything passing from the stench trap to the water supply pipe. The
position of the valves hand and the tap h place it beyond a possibility for any
contamination of the water to take place in the supply pipe whilst the valves f9
form an extra stoppage to air or gas entering the main through the pipe For
cistern G when not empty. The valves fg', also prevent any air or gas from
entering the main supply pipe at such times as when water is run off main water
pipes for repairs etc.

page_text: Should it happen that the pressure of main ceased while an obstruction was being
removed valves and f g¹ would at once close and the two ventilators 4³ would
open and allow the water in the pipe H to descend to the same level as in the pan
admitting pure air through the right hand ventilating pipe, filling the upper part
of the pipe H
The cistern E and its connections might be dispensed with and the valve. h be
turned on and off by hand if it is not required to operate the apparatus
automatically.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is,―
First. In apparatus for flushing stench traps and other passages and receptacles
a cistern or other receptacle (such as E) in open communication with the closet pan
or its equivalent combined with a float valve (such as h) adapted to turn on a supply
of pressure water into the drain below a back pressure valve therein the float of
said valve being arranged to work in said cistern substantially as and for the
purposes herein described and explained and as illustrated in the accompanying
drawings.
Second. In apparatus for flushing stench traps and other passages and receptacles
the arrangement of U trap herein described with an inlet from the cistern and back
pressure valves with ventilating pipes at each end the whole, being constructed and
arranged substantially as and for the purposes herein described and explained and
as illustrated in the accompanying drawings.
Third. In apparatus for flushing stench traps and other passages and receptacles
a cistern (such as E) in open communication with the upper part of the pan or
other receptacle and in communication with the drain pipe immediately below
through a passage fitted with a back pressure valve substantially as and for the
purposes herein described and explained and as illustrated in the accompanying
drawing.
Fourth. The general arrangement and combination of parts constituting the
herein described improvements in and relating to apparatus for flushing stench traps
and other passages and receptacles all constructed and combined substantially as
and for the purposes herein described and explained and as illustrated in the
accompanying drawings.
Dated this 12th day of February One thousand eight hundred and ninety-five.