Improvements in Double Flush Water Waste Preventing Valves.
Year: 1887

page_text: Date of Application, 21st Nov., 1887
Complete Specification Left. 20th Aug.. 1888
Complete Specification Accepted, 21st Sept., 1888
Improvements in Double Flush Water Waste Preventing Valves.
I, JOHN EARSDON, Engineer, of 5 Grafton Mews, Prince of Wales Road Kentish
Town in the County of Middlesex, do hereby declare the nature of my invention for
IMPROVEMENTS IN WATER WASTE PREVENTING VALVES to be as follows:-
The object of present improvements is to construct a double flush waste preventing
valve with fewer working parts and less complication than those in use at present. This
invention consists in its simplest form of a circular or other shaped chamber into which
the inlet opens and in the centre of this chamber there is a nozzle or opening which
constitutes the outlet, this outlet is closed by means of a flexable diaphragm or piston
which seats itself on this nozzle, over the lower diaphragm there is a partition and
above this there is another flexable diapragm or piston which is fixed to a spindle
working through a stuffing box and the upper diaphragm or piston is actuated by
means of a lever attached to this spindle.
Suitable passages are provided in the walls of this valve and these passages are
provided with little valves which open or close according to the direction in which the
lever is worked, and the action is such that if the upper piston or diaphragm be moved
either up or down, the lower one will be sucked up off its seating and will allow the
water to flow through.
A small channel is formed opening into the space between the lower diaphragm and
the partition so that when the lever is held up water will flow in and allow the valve
to close itself.
In another construction of the same thing instead of placing one diaphragm over
the other with a partition between, I use two separate chambers connected together
by a similar arrangement of passages and valves but in both cases the principle of
working is the same.
Dated this 21st day of November 1887.

page_text: I, JOHN EARSDON Engineer of 5 Grafton Mews Prince of Wales Road Kentish
Town in the County of Midlesex do hereby declare the nature of my invention &
in what manner the same is to be performed to be particularly described in and by
the following statement:-
.
The objects of present improvment is to construct a Double flush wast pre-
venting valves with fewer working parts & less complication than those in use at
present this invention consist in its simpliest form of a circular or other shap
chamber into which the inlet opens & in the centre of this chamber there is a nosle
or opening which constitute the outlet; this outlet is closed by a flexible diafpham
which seats itself on this nosle over the lower diafpham there is a partition & above 1
this there is another fexible diafpham which is fixed to a spindle working through a
stuffing Box.
The upper diafpham is actuated by means of a lever attacked to this spinde.
Suitable passages are provided in the walls of the valve & these passages are fitted
with little valves which open or close acording to the direction the lever is worked
& the action is such that if the upper diafpham be moved up or down the lower
one will be sucked up off its seating & will allow the water to flow through. A
small channel is formed opening in the space between the lower diafpham & the
partition so when the lever is helded up the water will flow in & allow the valve to
close itself. In another construction of the same thing instead of placing one diafpham
over the other with a partition between I use two separate chambers connected
together by a similar arrangment of passages & valves but in both cases the principle
of working is the same.
I will now proceed to describe my invention by the aid of Drawings Fig. 1 is a
sectional elevation Fig. 2 is a plan showing the arrangment of the four little valves
used for enabling the upper diafpham to suck up the lower diafpham on either the up
or down stroke & Fig. 3. is a section across the inlet.
A Figs. & 3. is the inlet for the water B is the lower diafpham which closes the
outlet, & C is the solid partition between the upper & lower diafphain D is the
diafphain which is fixed to the spindle.
The action is as follows:-
On lifting up the lever a vacuum will be formed in F which will cause the Ball H
to rise & the pressure of the water will lift the diafpham B off its seating & allow the
water to flow out through J until such time as the lower diafpham B shall close itself
by means of the water flowing into E through the channel K Fig. 4 & the quantity a
delivered will be regulated by the means of the regulating screw L Figs. 2 & 4.
When the lever is dropped a vacuum will be formed in G which will cause the
Ball I to lift & again suck up the lower diafpham B which will then cause the valve to
deliver its after flush until B shall-again. close by the same means as in the up
stroke.

page_text: It will obvise that when the lever noves either up or down it will be necessary to
expell the water contained in the spaces F on the down stroke & G on the up stroke
which is affected by means of the two little valves M & N showing in plan Fig. 2 on
the down stroke the water contained in F will cause the little valve M to rise & allow
the water to flow over the Ball & down again through O into the main supply A by
means of a little channel similar to K, & on the up stroke the water contained in G
will be expelled down a passage P which communicates with the underneath side of
the Ball N & will lift the Ball N & will flow over & down Q back again in the main
by means of another channel similar to K it will thus be seen that by this arrange-
ment all the four Balls act vertically, & whether the Closet Handle be pulled up or
down a certain quantity of water will be delivered.
This valve is suitable for fixing underneath the closet seat or any other position
where the water can be brought into it by the means of a pipe from the main or from a
suitable tank & I wish it to be understood that I do not claim the arrangment of
2 diafpham & four valves in a closet valve intended to be submerged in a Tank as such
a valve is old & has been patented before.
Having now particularly described & ascertained the nature of my said inven-
tion & in what manner the same is to be performed I declare that what I
claim is
In a waste preventing valve substantially is described the combination of the two
diafpham & the four valves wit. the lever as & for the purpose described.
In a waste preventing valve substantially as described, the Combination of the two
Diaphragms with the four valves as & for the purpose set forth.
In a waste preventing valve substantially as set forth, the use of the four balis with
a vertical action.
In a waste preventing valve substantially as described the use of the partition (or its
equivalent) between the two Diaphragms for the purpose described.