CERTAIN IMPROVEMENTS IN RENDERING UNINFLAMMABLE COTTON, SILK, AND OTHER TEXTILE FABRICS
Year: 1865

page_text: LETTERS PATENT to Edouard Hottin, of No. 10, Rue de la Fidélité,
Paris, in the Empire of France, Gentleman, for the Invention of
"CERTAIN IMPROVEMENTS IN RENDERING UNINFLAMMABLE COTTON, SILK, AND
OTHER TEXTILE FABRICS."
Sealed the 21st July 1865, and dated the 4th February 1865.
PROVISIONAL SPECIFICATION left by the said Edouard Hottin at the
Office of the Commissioners of Patents, with his Petition, on the
4th February 1865.
I, EDOUARD HOTTIN, of No. 10, Rue de la Fidélité, Paris, in the Empire
of France, Gentleman, do hereby declare the nature of the said Invention for
"CERTAIN IMPROVEMENTS IN RENDERING UNINFLAMMABLE COTTON, SILK, AND OTHER
TEXTILE FABRICS," to be as follows, that is to say:-
My Invention consists in a chemical composition, which I call hottine, for
rendering non-inflammable white and colored woven fabrics, viz., calico, linen,
cotton, silk, and other textile substances.
I prepare the "hottine" in the following manner:-Imake a solution of phos-
phate of lime, into which I pour by parts an excess of ammonia to precipitate
the phosphoric acid combined with the ammonia; I filter this liquor to separate
it from the phosphate of lime, and the liquor is bleached by means of animal
charcoal; I cause it to evaporate for one hour to concentrate the solution, and
then add to it about five per cent. of silicic acid or silex in a gelatinous state;

page_text: I put the whole to boil till the solution has evaporated to a suitable con-
sistence to form a crystallized mass, which I cause to dry and afterwards
reduce to a powder. I employ gum, starch, and other like substances as a
dressing. To apply the new composition to the articles to be rendered fire-
proof. I form a solution composed of-
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Edouard Hottin in the Great Seal Patent Office on the
29th July 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDOUARD
HOTTIN, of No. 10, Rue de la Fidélité, Paris, in the Empire of France,
Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of February, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-eighth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Edouard Hottin, Her special licence that I, the said Edouard Hottin,
my exccutors, administrators, and assigns, or such others as I, the said
Edouard Hottin, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times there-
after 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 "CERTAIN
IMPROVEMENTS IN RENDERING UNINFLAMMABLE COTTON, SILK, AND OTHER TEXTILE
FABRICS," upon the condition (amongst others) that I, the said Edouard Hottin,
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.

page_text: NOW KNOW YE, that I, the said Edouard Hottin, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, that is to say :-
The Invention consists in a chemical composition, which I call hottine, for
rendering non-inflammable white and colored woven fabrics, videlicet, calico,
linen, cotton, silk, and other textile substances.
I prepare the hottine in the following manner:-I make a solution of phosphate
of lime, into which I pour by parts an excess of ammonia to precipitate the phos-
phoric acid combined with the ammonia; I filter this liquor to separate it from
the phosphate of lime, and the liquor is bleached by means of animal charcoal;
I cause it to evaporate for one hour to concentrate the solution, and then add
to it fifteen per cent. of silicic acid in a gelatinous state; I put the whole to
boil until the solution bas evaporated to a suitable consistence to form a
crystallized mass, which I cause to dry and afterwards reduce to powder. I
employ gum, starch, and other like substances as a dressing. To apply the
new composition to the articles to be rendered fireproof, I form a solution
composed of about thirty parts per hundred of hottine, thirty-five parts per
hundred of gum, and thirty-five parts per hundred of starch.
Having now described the nature of my said Invention, and in what manner
the same is to be performed, I would have it understood that I do not confine
myself to the precise details herein laid down, nor to the proportions specified,
as they may be varied according to the nature of the articles to be operated
upon;
but what I claim is the application of the substance which I call
hottine, prepared as above described, in combination with gum, starch, and
other analogous matters for the purpose of rendering tissues non-inflammable.
In witness whereof, I, the said Edouard Hottin, have hereunto set my
hand and seal, this Twenty-eighth day of July, in the year of our
Lord One thousand eight hundred and sixty-five.
Witness,
H. A. DUFRENE,
Civil Engineer,
10, Rue de la Fidélité, Paris.
28 July 1865.
E. HOTTIN. (L.S.)