IMPROVEMENTS IN PURIFYING WATER
Year: 1854

page_text: LETTERS PATENT to William Dantec, of 5, New Quay, Liverpool, for the
Invention of "IMPROVEMENTS IN PURIFYING WATER."
Sealed the 15th September 1854, and dated the 18th March 1854.
PROVISIONAL SPECIFICATION left by the said William Dantec at the
Office of the Commissioners of Patents, with his Petition, on the 18th
March 1854.
I, WILLIAM DANTEC, of 5, New Quay, Liverpool, do hereby declare the
nature of the Invention for "IMPROVEMENTS IN PURIFYING WATER" to be as
follows:-
My Invention for the purification of water, for the use of dyers and for
manufacturing and other purposes, consists of the employment of hydrate of
barytes (caustic barytes), or of the hydrate of strontia (caustic strontia), or of
a mixture of the two, which is to be mixed with water contaminated with
sulphates or carbonates of lime or magnesia, or other impurities, in order to
decompose and separate the same from the water, which may be afterwards
filtered or the impurities allowed to subside before use.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Dantec in the Great Seal Patent Office on the
16th September 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
DANTEC, of 5, New Quay, Liverpool, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighteenth day of March, in the year of our Lord
One thousand eight hundred and fifty-four, in the seventeenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
William Dantec, Her special licence that I, the said William Dantec, my
executors, administrators, and assigns, or such others as I, the said William
Dantec, 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 PURIFYING
WATER," upon the condition (amongst others) that I, the said William Dantec,
by an instrument in writing under my hand and seal, 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 William Dantec, 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):-
My Invention consists of the purification of water containing earthy salts in
solution, such as sulphates or carbonates of lime and magnesia, or other
impurities, by mixing with such water a quantity of hydrate of barytes, either
in the solid state or in the state of solution, sufficient to decompose such salts,
which together with the barytes are precipitated; the barytes being added till
no more impurities are thrown down thereby.
The water is allowed to stand for a sufficient time to become clear, and may
afterwards be filtered or not, as may be considered desirable, and can then be
applied to any of the purposes in the arts which require pure or soft water,
such as dyeing, bleaching, washing, and a variety of other purposes. I do
not, however, confine myself to its application to any particular manufacture
or process, as I claim for the use of this mode of purifying water wherever it

page_text: can be applied, whether for my manufacturing or for any cleansing purpose,
or for any purpose whatever where it. is required or desirable to use water free
from such earthy salts or impurities.
In witness whercof, I, the said William Dantec, have hereunto set my
hand and seal; this Fifteenth day of August, in the year of our Lord
One thousand eight hundred and fifty-four.
Witness,
W MCCARTHY.
WILLIAM DANTEC. (L.S.)