IMPROVED MANUFACTURE OF FLUIDS FOR DEODORIZING AND DISINFECTING PURPOSES
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 "IMPROVED MANUFACTURE OF FLUIDS FOR DEODORIZING
AND DISINFECTING PURPOSES."
:
Sealed the 28th March 1873, and dated the 4th October 1872.
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 4th 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 “IMPROVED MANUFACTURE OF FLUIDS
FOR DEODORIZING AND DISINFECTING PURPOSES," to be as follows:-'
.
This Invention has for object the manufacture or production of
deodorizing and disinfecting fluids containing within themselves direct
action of nascent oxygen, and indirect action of nascent chlorine, pro-

page_text: perties of importance for attacking septic and malodorous matters in a
state of solution or as solids. The fluids also give off a gaseous ema-
nation, which attacks effluvia in the air by the action of indirect
oxydation.
According to the first process of manufacture we first obtain a crude
manganate of sodium or potassium containing a considerable excess of
caustic alkali. We do this by heating together with constant stirring
during a long series of hours oxide of manganese and alkali and a little
chlorate, or we proceed by any of the ordinary recognized methods for
producing a manganate, taking care always that it contains a large
excess of alkali.. We then dissolve the crude manganate above described
in a proper quantity of water, and pass chlorine gas until the manganate
is converted into permanganate and the free alkali almost entirely into
a mixture of chloride and hypochloride, taking care however to stop the
passage of the chlorine so as to leave a marked amount of alkali uncom-
bined with it. In this manner we produce a solution containing a per-
manganate, a chloride, and a hypochloride of the alkali which we
employ together with a portion of the same in a free state.
According to the second process, having prepared the alkaline man-
ganate as above stated, we dissolve it in water along with a proper
proportion of carbonato of an alkali. In another vessel we at the same
time dissolve a quantity of good commercial chloride of lime. On
mixing the two solutions together in proper proportions a carbonate of.
lime is deposited, and a chloride and a hypochloride of the alkali we
employ is formed. At the same time oxide of manganese is deposited
and permanganate of potash produced, and the united precipitates
having been removed by appropriate means the solution is submitted to
the action of a gentle stream of carbonic acid gas to change any free
alkali into bicarbonate.
Of the two methods we prefer the latter, because the solution although
it keeps as well does not contain any alkali except in a mild form of
bicarbonate. The first might be supplied as the general disinfectant at
a cheap rate, the 2nd is the more elegant preparation for toilet and
remedial purposes.
In both of the fluids we have the direct oxydizing action of the
alkaline permanganate applicable to septic and malodorous matter in a
solid or liquid condition. The indirect oxydizing action of the alkaline

page_text: hypochloride which can be exerted in the same manner, and which in
addition by its slow disengagement of chlorine in contact with the air
will attack and oxydize impurities in a gaseous condition or suspended"
in the atmosphere. After the said oxydizing actions have been exerted
5 there remains a solution which is an excellent antiseptic, because it then
contains a notable proportion of chloride of sodium.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Hamilton Brown Barnett and William Bertram ·
Mitford Slado, in the Great Seal Patent Office on the 4th April
1878.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, HAMILTON
BROWN BARNETT and WILLIAM BERTRAM MITFORD SLADE, of Grace-
church Street, in the City of London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth 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, administrators, and
assigns, or such others as we, the said Hamilton Brown Barnett and
William Bertram Mitford Slade, our 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 "IMPROVED MANUFACTURE OF FLUIDS FOR
DEODORIZING AND DISINFECTING PURPOSES," 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.

page_text: 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 :—
This Invention has for object the manufacture or production of '
deodorizing and disinfecting fluids containing within themselves direct
action of nascent oxygen, and indirect action of nascent chlorine, pro-
perties of importance for attacking septic and malodorous matters in a .
state of solution or as solids. The fluids also give off a gaseous 1
emanation, which attacks effluvia in the air by the action of indirect
oxidation.
E
According to the first process of manufacture we first obtain a crude
manganate of sodium or potassium containing a considerable excess of
caustic alkali. We do this by heating together with considerable 1
stirring during a long series of hours, oxide of manganese, an alkali, and
a little chlorate, or we proceed by any of the ordinary recognized
methods for producing a manganate, taking care always that it contains
a large excess of alkali. We then dissolve the crude manganate as
above described in a proper quantity of water, and pass chlorine gas until 2
the manganate is converted into permanganate, and the free alkali
almost entirely into a mixture of chloride and bypochloride, taking care
however to stop the passage of the chlorine so as to leave a marked
amount of alkali uncombined with it. In this manner we produce a
solution containing a permanganate, a chloride, and a hypochloride of 2
the alkali which we employ together with a portion of the same in a
free state.
According to the second process, having prepared the alkaline man-
ganate as above stated, we dissolve it in water along with a proper
proportion of carbonate of an alkali. In another vessel we at the same 3
time dissolve a quantity of good commercial chloride of lime. On mixing
the two solutions together in proper proportions, carbonate of lime is
deposited, and a chloride and a hypochloride of the alkali we employ is :
formed. At the same time oxide of manganese is deposited and per-
manganate of potash produced, and the united precipitates having been 3
removed by appropriate means the solution is submitted to the action of
a gentle stream of carbonic acid gas to change any free alkali into
bicarbonate.

page_text: Of the two methods we prefer the latter, because the solution although
it keeps as well does not contain any alkali except in a mild form of
bicarbonate. The first might be supplied as the general disinfectant at
a cheap rate, the second is the more elegant preparation for toilet
and remedial purposes..
In both of the fluids we have the direct oxydizing action of the
alkaline permanganate applicable to septic and malodorous matters
in a solid or liquid condition. The indirect oxydizing action of the
alkaline hypochloride which can be exerted in the same manner, and
which in addition by its slow disengagement of chlorine in contact with
the air will attack and oxydize impurities in a gaseous condition or
suspended in the atmosphere. After the said oxydizing actions have
been exerted there remains a solution which is an excellent antiseptic,
because it then contains a notable proportion of chloride of sodium.
And having now described the nature of our said Invention and in
what manner the same is to be performed, we declare that we claim,-
The improved manufacture of fluids for deodorizing and disinfecting
purposes as described in the foregoing description.
Secondly. The combination of the ingredients named in the manner.
and for the purposes set forth, together with the modified combination
thereof as 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
HAMILTON BROWN BARNETT. (L.S.)
W. B. MITFORD SLADE.
(L.S.)