IMPROVEMENTS IN THE PREPARATION OR PRODUCTION OF DISINFECTING, ANTISEPTIC, AND CLEANSING LIQUIDS.” PROVISIONAL SPECIFICATION
Year: 1872

page_text: LETTERS PATENT to Hamilton Brown Barnett and William Bertram
Mitford Slade, of Gracechurch Street, in the City of London, for
the Invention of "IMPROVEMENTS IN THE PREPARATION OR PRODUCTION OF
DISINFECTING, ANTISEPTIC, AND CLEANSING LIQUIDS.”
PROVISIONAL SPECIFICATION left by the said Hamilton Brown
Barnett and William Bertram Mitford Slade at the Office of the
Commissioners of Patents, with their Petition, on the 3rd October
1872.
We, HAMILTON BROWN BARNETT and WILLIAM BERTRAM MITFORD
SLADE, of Gracechurch Street, in the City of London, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN THE PREPARATION
OR PRODUCTION OF DISINFECTING, ANTISEPTIC, AND CLEANSING LIQUIDS," to be as
follows:-
The object of this Invention is the preparation or production of
liquids or fluids containing disinfecting, antiseptic, and cleansing
properties, the process and the proportional parts of the ingredients

page_text: being varied according to circumstances. The nature of the Invention
will be gathered from the following example:-We dissolve good com-
mercial chloride of lime in an appropriate quantity of water in one
vessel, and in another vessel we dissolve a proper quantity of commercial
carbonate of soda. These solutions are mixed together to produce
double decomposition by the lime uniting with the carbonic acid from
the soda and forming a precipitate of carbonate of lime, while the
hydrochloric and hypochlorous acids from the chloride of lime unite
with the soda forming chloride and hyperchloride of soda which remain
in solution. We then allow the precipitate to subside and remove the
liquor into another vessel, into which we pass a current of carbonic acid
gas until we ascertain by appropriate tests that all the free carbonate of
soda, if any remain, is completely changed into a bicarbonate. The
liquor or fluid obtained is an excellent detergent, uniting as it does the
bleaching action of chlorine in its mildest form with the equally mild
alkalinity of the bicarbonate of soda. It can therefore be used for an
immense variety of domestic purposes for removing dirt without in any
way destroying the substance or surface to which it is applied. The
fluid is also an excellent disinfectant on account of the indirect oxy-
dizing action of the chlorine which it contains and slowly evolves in the
air. After its disinfecting action has exerted itself the fluid which
remains forms an excellent antiseptic by its then containing a large
quantity of chloride of sodium.
Where we do not find it convenient to use carbonate of soda we
employ carbonate of potash, proceeding to make the fluid in what is
otherwise in precisely the same manner. Under some circumstances we
also prefer to burn waste vegetable products and employ the ash obtained
therefrom in a similar manner as the carbonate of soda and potash.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Hamilton Brown Barnett and William Bertram 30
Mitford Slade in the Great Seal Patent Office on the 3rd April
1873.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of October, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Hamilton Brown Barnett and William
Bertram Mitford Slade, Her special licence that we, the said Hamilton
Brown Barnett and William Bertram Mitford Slade, our executors, ad-
ministrators, and assigns, or such others as we, the said Hamilton
Brown Barnett and William Bertram Mitford Slade, our exccutors,
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 THE
PREPARATION OR PRODUCTION OF DISINFECTING, ANTISEPTIC, AND CLEANSING
LIQUIDS," upon the condition (amongst others) that we, the said Hamilton
Brown Barnett and William Bertram Mitford Slade, or one of us, our
executors or administrators, by an instrument in writing under our,
or one of our, 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 we, the said Hamilton Brown Barnett and
William Bertram Mitford Slade, do hereby declare the nature of our
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 the preparation or production of liquids
or fluids containing disinfecting, antiseptic, and cleansing properties,
the process and the proportional parts of the ingredients being varied
according to circumstances. The nature of the Invention will be
gathered from the following example:-We dissolve good commercial
chloride of lime in an appropriate quantity of water in one vessel, and
in another vessel we dissolve a proper quantity of commercial carbonate
of soda. These solutions are mixed together to produce double decom-
position by the lime uniting with the carbonic acid from the soda and
forming a precipitate of carbonate of lime, while the bydrochloric and

page_text: hypochlorous acids from the chloride of lime unite with the soda forming
chloride and hyperchloride of soda which remains in solution. We then
allow the precipitate to subside and remove the liquor into another
vessel, into which we pass a current of carbonic acid gas until we ascer-
tain by appropriate tests that all the free carbonate of soda, if any
remains, is completely changed into a bicarbonate. The liquor or fluid
obtained is an excellent detergent, uniting as it does the bleaching action
of chlorine in its mildest form with the equally mild alkalinity of the
bicarbonate of soda. It can therefore be used for an immense variety of
domestic purposes for removing dirt without in any way destroying the
substance or surface to which it is applied. The fluid is also an excellent
disinfectant on account of the indirect oxydizing action of the chlorine
which it contains and slowly evolves in the air. After its disinfecting
action has exerted itself the fluid which remains forms an excellent anti-
septic by its then containing a large quantity of chloride of sodium.
Where we do not find it convenient to use carbonate of soda we employ
carbonate of potash, proceeding to make the fluid in what is otherwise
in precisely the same manner. Under some circumstances we also prefer
to burn waste vegetable products and employ the ash obtained therefrom
in a similar manner as the carbonate of soda and potash.
And having now described the nature of the said Invention and in
what manner the same is to be performed, we declare that we claim the
preparation or production of disinfecting, antiseptic, and cleansing
liquids in the manner and by the ingredients as herein described.
In witness whereof, we, the said Hamilton Brown Barnett and
William Bertram Mitford Slade have hereunto set our hands and
seals, this Third day of April, One thousand eight hundred and
seventy thron