IMPROVEMENTS IN WATER WASTE PREVENTERS
Year: 1882

page_text: LETTERS PATENT to Henry Conolly of Hampstead Road in the county of
Middlesex for an Invention of IMPROVEMENTS IN WATER WASTE PREVENTERS
PROVISIONAL SPECIFICATION left by the said Henry Conolly at the Office
of the Commissioners of Patents on the 30th June 1882.
HENRY CONOLLY of Hampstead Road in the county of Middlesex IMPROVE-
MENTS IN WATER WASTE PREVENTERS
The object of my invention is to produce a water waste preventer that shall be
noiseless, leverless, and valve-less, while at the same time it will be very certain in
operation and simple in construction. The cistern is made of a convenient size for
one flush or one discharge of all the water contained therein. It is filled with
water through the operation of a ball valve, but the supply pipe is led to the
bottom of the cistern to prevent any noise from the inrush of water. The water is
discharged from the cistern by the action of a syphon. I prefer to construct this
syphon by extending the discharge pipe upwards through the bottom of the cistern
to a little above the level of the water therein when the cistern is full, and placing
over this pipe a cap, which extends downwards nearly to the bottom of the cistern,
and which is of a larger diameter than the pipe. The closed top of this cap is a
suitable distance above the top of the discharge pipe. The cap therefore forms the
short leg, while the discharge pipe is the long leg of the syphon. I may also
connect to the top of the cap a small pipe which reaches as far down into the
cistern as the cap by which an extra stream of water can be thrown into the top
of the cap when required. I fit a tube which passes, through the bottom of the
cistern and extends upwards above the level of the water therein. A float is
formed round this tube capable of sliding freely up and down the same. It is
made of a suitable size for its purpose.. The pull passes up through the tube and
is connected to the float. As the water enters and fills the cistern, the float is
lifted up the tube by the water; and when the cistern is full and the supply is
stopped by the ball. valve, the pull can draw the float down into the water,
displacing a sufficient quantity of the same to fill the cap above the mouth of the
discharge pipe, and thereby set up the syphonic action which empties the cistern.
.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Conolly in the Great Seal Patent Office on the
30th December 1882.
HENRY CONOLLY of Hampstead Road in the county of Middlesex IMPROVE-
MENTS IN WATER WASTE PREVENTERS
The object of my invention is to produce a water waste preventer that shall be
noiseless leverless and valveless while at the same time it will be very certain in
operation and simple in construction
In order to explain my invention I refer to the accompanying drawing in which
the letters refer to the same parts in all the Figures.
Figure 1 is a vertical section of a cistern containing one form of my apparatus
also partly in section. A is the cistern which holds sufficient water for a single
flush. The water is admitted to this cistern by the ball valve B and the supply
pipe C is led to the bottom of the cistern A to prevent any noise from the inrush
of water. The discharge pipe D passes up through the bottom of the cistern A
and terminates a little above the level of the water therein when the cistern is
sufficiently full and the ball valve B has shut off the supply. A short tube or
cap E closed at the top is placed round the pipe D with its closed top a suitable
distance above the mouth of the said pipe D for the purpose hereinafter described.
This cap E descends nearly to the bottom of the cistern A. It therefore forms the
short leg of a syphon of which the pipe D is the long leg. The top of this cap E
is enlarged by a shoulder F being formed therein a little below the level of the
mouth of the pipe D for the purpose hereinafter explained and from this shoulder F
descends a small pipe G which terminates a little above the level of the bottom of
the cap E the action of which is hereinafter described. A tube H passes through
the bottom of the cistern and extends upwards above the level of the water therein
when the said cistern is full and round this tube H is formed the float or
displacer K which is capable of sliding freely up and down the said tube H. This
float or displacer K can be made of any convenient shape and of a suitable size for
its purpose as hereinafter described. It must also be so made that it is capable of
being upborne by the water. The pull L passes up through the tube H and is
secured to the upper part of the float K. The action therefore of this apparatus as
aforesaid is as follows. As the water fills the cistern A. through the action of the
ball valve B the float K is uplifted by the same until the cistern is sufficiently full
and the supply is shut off. When a flush is required the pull L draws down the
float K into the water displacing a sufficient quantity of the same to fill the top of
the cap E above the mouth of the pipe D. A syphonic action is thereby established
which empties the cistern A. As the level of the water falls in the said cistern the
mouth of the pipe G is uncovered before the bottom of the cap E and the air
thereby drawn into the syphon diminishes the rush of water and as the flush comes
to an end the shoulder F in the cap E catches the water and acts as a breakwater
to prevent the water that has not passed down the pipe D from falling back into
the cistern noisily by holding the said water for a sufficient time to allow it
gradually and quietly so to fall back. The end of the flush is therefore effected
gradually and without noise
Figure 2 shews another form of syphon which in this case consists of a bent
pipe M one end of which is connected to the discharge pipe D while the other end
terminates a little above the bottom of the cistern A. The bend of this pipe M is
a little above the level of the water when the cistern is sufficiently full. To the
long leg of this syphon is attached a small pipe N which is also bent into the form

page_text: of a syphon the bend whereof is at the same level as that of the pipe M. The
float K is fitted as herein before described and when it is drawn down into the
water by the pull L the water thereby displaced fills the bend of the pipe M and
sets up the syphonic action which empties the cistern and as the level of the water
falls the pipe N is first uncovered thereby diminishing the rush of water and
causing the end of the flush to be effected gradually and without noise in manner
as herein before explained.
Figure 3 is a vertical section and Figure 4 is a horizontal section on an enlarged
scale of the float K and the tube H shewing one method of constructing and
fitting the same.
I would wish it however to be clearly understood that I do not limit myself to
the precise shapes or details of construction of the various parts of my apparatus
as shewn in the drawing though I consider the same as shewn to be very suitable
for my purposes as hereinbefore described and declared but the same may be
altered in accordance with the requirements of each apparatus. The shoulder or
enlargement of the cap hereinbefore described may also be used with or without
the small pipe as I may prefer and the cap may be made without this said shoulder
or enlargement and with or without the small pipe
Having thus particularly described and clearly explained my invention and in
what manner the same is to be performed I clain as my invention which is
protected by the bereinbefore in part recited Letters Patent
1. In a water waste preventer the float or displacer which slides freely on a
tube in a cistern the pull of which passes through the bottom of the said cistern
substantially as and for the purpose herein before described and declared.
2. In a water waste preventer the shoulder or enlargement of the top of the
cap which forms the short leg of a syphon in a cistern substantially as and for the
purpose herein before described and declared.
3. The water waste preventer consisting of the combination in a cistern of the
supply pipe which extends to the bottom of the said cistern the syphon and the
Hoat or displacer the pull of which passes through the bottom of the said
cistern substantially as hereinbefore described and declared and shewn in the
accompanying drawing.
In witness whereof I the said Henry Conolly have hereunto set my hand
and seal this thirtieth day of December in the year of our Lord one
thousand eight hundred and eighty two.