IMPROVEMENTS IN APPARATUS FOR CONTROLLING THE SUPPLY OF WATER TO DWELLING HOUSES AND OTHER BUILDINGS
Year: 1872

page_text: LETTERS PATENT to Frederick George Underhay, of Crawford Passage,
Clerkenwell, in the County of Middlesex, for the Invention of
"IMPROVEMENTS IN APPARATUS FOR CONTROLLING THE SUPPLY OF WATER TO
DWELLING HOUSES AND OTHER BUILDINGS."
Sealed the 22nd May 1872, and dated the 5th March 1872.
PROVISIONAL SPECIFICATION left by the said Frederick George
Underhay at the Office of the Commissioners of Patents, with
his Petition, on the 5th March 1872.
I, FREDERICK GEORGE UNDERHAY, of Crawford Passage, Clerkenwell,
in the County of Middlesex, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN APPARATUS FOR CONTROLLING THE SUPPLY
OF WATER TO DWELLING HOUSES AND OTHER BUILDINGS," to be as follows:-
The object of this Invention is to control the quantity of water supplied
to a dwelling house, or factory, or other building when a constant water
supply is maintained in the supply main, so that the quantity of water

page_text: delivered from the main to a dwelling house or other building shall never
exceed a given maximum, even though the delivery taps in such dwelling
be left constantly open; and also so that the quantity delivered shall
be uniform and shall not be dependent upon the pressure in the water
main. For this purpose I employ a box or cistern divided by a partition
into two chambers. The water from the supply pipe is admitted by a
ballcock to one of these chambers, and from it flows through a small
orifice into the other chamber; from this second chamber passes an
outlet pipe either to a cistern for containing a large supply, or if no
large quantity of water is ever required to be drawn off at one time
this cistern need not be used. By this arrangement the amount of water
delivered to the dwelling house will be dependent on the size of the
orifice between the two chambers before mentioned, and the head of
water above this orifice will always be uniform whatever may be the
pressure of water in the supply main.
The orifice before mentioned I by preference form in a screw plug
which can be screwed into the division between the two chambers, and
by the use of plugs having different sized holes bored through them the
apparatus may be adapted for delivering any desired number of gallons
per day. The box or cistern, after being adjusted to deliver the maximum
amount desired, is covered over with a suitable cover which may be
secured by a seal affixed to it so that the adjustment of the apparatus
may not be tampered with.
By the use of apparatus arranged as above described the water
companies could not be defrauded by waste of water, as the consumer
would be required to pay according to the maximum amount of water
he could draw off each day, and the consumer would have a uniform
supply delivered, whatever might be the pressure of water in the water
main.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 3
filed by the said Frederick George Underhay in the Great Seal
Patent Office on the 5th September 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
GEORGE UNDERHAY, of Crawford Passage, Clerkenwell, in the County
of Middlesex, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Fifth day of March, in the year
hundred and seventy-two, in the
Letters Patent, bearing date the
of our Lord One thousand eight
thirty-fifth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Frederick George Underhay,
Her special license that I, the said Frederick George Underhay, my
executors, administrators, and assigns, or such others as I, the said
Frederick George Underhay, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and
at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle
of Man, an Invention for "IMPROVEMENTS IN APPARATUS FOR CONTROLLING
THE SUPPLY OF WATER TO DWELLING HOUSES AND OTHER BUILDINGS," upon
the condition (amongst others) that I, the said Frederick George
Underhay, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Frederick George Underhay, do
hereby declare the nature of the said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement thereof, that is to say :-
.
The object of this Invention is to control the quantity of water
supplied to a dwelling house, or factory, or other building when a
constant water supply is maintained in the supply main, so that the
O quantity of water delivered from the main to a dwelling house or other
building shall never exceed a given maximum, even though the delivery
taps in such dwelling be left constantly open, and also so that the
quantity delivered shall be uniform and shall not be dependent upon the
pressure in the water main. For this purpose I employ a box or cistern
5 divided by a partition into two chambers. The water from the supply
pipe is admitted by a ballcock to one of these chambers, and from it
flows through a small orifice into the other chamber; from this second
chamber passes an outlet pipe either to a cistern for containing a large