Iм- PROVEMENTS IN COMPRESSED OR ARTIFICIAL FUEL
Year: 1867

page_text: LETTERS PATENT to Auguste François Gaidan, of Nimes, Gard, in the
Empire of France, but at present residing at No. 6, Lancaster Terrace,
Regent's Park, in the County of Middlesex, for the Invention of "Iм-
PROVEMENTS IN COMPRESSED OR ARTIFICIAL FUEL."-Partly a communication
CN: Good in the Finning of Franc
Sealed the 28th April 1868, and dated the 18th November 1867.
PROVISIONAL SPECIFICATION left by the said Auguste François Gaidan
at the Office of the Commissioners of Patents, with his Petition, on the
18th November 1867.
I, AUGUSTE FRANÇOIS GAIDAN, of Nimes, Gard, in the Empire of France,
but at present residing at No. 6, Lancaster Terrace, Regent's Park, in the
County of Middlesex, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN COMPRESSED OR ARTIFICIAL FUEL," to be as follows:-
One part of this Invention consists of an improved manufacture of compressed
or artificial fuel without the admixture of pitch as at present. For this purpose
I mix together rosin, glue, and salt in a pulverous state, and I then mix this
compound with coal dust in the proportions of about from forty to fifty pounds
weight of the compound to one ton weight of coal dust, the latter being at the
time warmed sufficiently to render the former adhesive, after which the
compound is compressed in the ordinary manner.
Another part of my Invention has reference to an improved mode of
manufacturing artificial fuel with pitch. Heretofore, the pitch has first been
melted before admixture with the coal dust.

page_text: Now
my improvement consists in pulverizing the pitch and then mixing it
in the pulverous state with the coal dust, the latter being at the time warmed
sufficiently to render the pitch adhesive. After incorporation the compound
is subjected to the requisite pressure.
The advantages of my improved mode of manufacture are, firstly, that a
much less quantity of pitch is required for admixture with the coal dust; and,
secondly, that owing to the dry state of the particles of pitch the compound
may be compressed with much greater force than can be applied under
the ordinary process, and thus the fuel be rendered more compact than at
present.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Auguste François Gaidan in the Great Seal Patent Office on
the 12th May 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, AUGUSTE
FRANÇOIS GAIDAN, of Nimes, Gard, in the Empire of France, but at present
residing at No. 6, Lancaster Terrace, Regent's Park, in. the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of November, in the year of our Lord
One thousand eight hundred. and. sixty-seven, in the thirty-first year, of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Auguste François Gaidan, Her special licence that I, the said Auguste
François Gaidan, my executors, administrators, and assigns, or such others as
I, the said Auguste François Gaidan, 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 COMPRESSED OR ARTIFICIAL FUEL," the result partly of a com-
munication made to me from abroad by Louis Tresgot, of Nimes, Gard; in.the
Empire of France, and partly of an Invention and discovery made by myself,
upon the condition (amongst others) that I, the said Auguste François
Gaidan, 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

page_text: Office within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said Auguste François Gaidan, 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 :-
One part of this Invention consists of an improved manufacture of compressed
or Patent fuel without the admixture of pitch as at present. For this purpose
I mix together rosin, glue, and salt in a pulverous state, and I then mix this
compound with coal dust in the proportions of about from forty to fifty pounds
weight of the compound to one ton weight of coal dust, the latter being at the
time warmed sufficiently to render the former adhesive, after which the
compound is compressed in the ordinary manner.
Another part of this Invention has reference to an improved mode of
manufacturing Patent fuel with pitch. Heretofore the pitch has first been
melted before admixture with the coal dust.
Now my improvement consists in pulverizing the pitch and then mixing
it in the pulverons state with the coal dust, the latter being at the time warmed
sufficiently to render the pitch adhesive. After incorporation the compound is
subjected to the requisite pressure.
The advantages of my improved mode of manufacture are, firstly, that a
much less quantity of pitch is required for admixture with the coal dust; and,
secondly, that owing to the dry state of the particles of pitch the compound
may be compressed with much greater force than can be applied under
the ordinary process, and thus the fuel be rendered more compact than at
present.
In witness whereof, I, the said Auguste François Gaidan, have hereunto
set my hand and seal, this Third day of May, in the year of our
Lord Oe thousand eight hundred and sixty-eight.