IMPROVEMENTS IN THE MANUFACTURE OF ARTIFICIAL FUEL
Year: 1878

page_text: LETTERS PATENT to Friedrich Hermann Felix Engel, Civil Engineer and
Patent Agent, in the City of Hamburg, Germany, for the Invention of
"IMPROVEMENTS IN THE MANUFACTURE OF ARTIFICIAL FUEL." A communi-
cation from Otto Hassel, of Heidelberg, in the German Empire.
Sealed the 16th May 1879, and dated the 19th November 1878.
PROVISIONAL SPECIFICATION left by the said Friedrich Hermann Felix
Engel at the Office of the Commissioners of Patents on the 19th November
1878.
FRIEDRICH HERMANN FELIX ENGEL, Civil Engineer and Patent Agent, in the
City of Hamburg, Germany. “IMPROVEMENTS IN THE MANUFACTURE OF ARTI-
FICIAL FUEL." A communication from Otto Hassel, of Heidelberg, in the German
Empire.
This Invention consists of the manufacture of artificial fuel in form of bricks or
blocks out of peat, coal dust, and other combustible materials in combination with
sea-grass, sea-weed, sea-fan, or similar vegetable substances, and in combination
with a coating of pitch or other suitable material.
The process of manufacture is as follows:-One or more of the above named
vegetable substances is or are boiled in water to a jelly, which is then carefully
mixed with the combustible material in a powdered state that has to be formed
into artificial fuel until a pasty mass is obtained. The mixture is compressed in
moulds of suitable size into bricks which are dried in the open air. After the
bricks have sufficiently hardened the same are furnished with a coating of pitch or
other suitable material to form a strong protecting surface against atmospheric
influence.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Friedrich Hermann Felix Engel in the Great Seal Patent Office' on
the 19th May 1879.
FRIEDRICH HERMANN FELIX ENGEL, Civil Engineer and Patent Agent, in the
City of Hamburg, Germany. "IMPROVEMENTS IN THE MANUFACTURE OF ARTI-
FICIAL FUEL." A communication from Otto Hassel; of Heidelberg, in the German
Empire.
This Invention consists of the manufacture of artificial fuel in form of bricks or
blocks out of peat, coal-dust, and other combustible materials in combination with
sea-grass, sea. weed, sea-fan, or similar sea-plants, and in combination with a
coating of pitch or other suitable material.
The process of manufacture is as follows:-One or several of the above named
sorts of sea-plants is or are boiled in water to a jelly, which is then carefully mixed
with the combustible material in a powdered state that has to be formed into
artificial fuel until a pasty mass is obtained. The mixture is compressed in moulds
of suitable size into bricks which are dried in the open air. After the bricks have
sufficiently hardened the same are furnished with a coating of pitch or other
suitable material to form a strong protecting surface against atmospheric influence.
In case the said plants which shall be used for forming these fuel blocks are in a
fresh state, the same can only be softened in water after they have been crushed
through rollers or in stamps, and be used without being boiled.
Having now described the nature and particulars of the said Invention, I
claim,―
The manufacture of artificial fuel blocks out of powdered combustible material
in combination with sea-grass, sea-weed, sea-fan, or similar sea plants, and the
coating of such fuel blocks with pitch or similar material in the manner and for the
purpose herein set forth.
In witness whereof, I, the said Friedrich Hermann Felix Engel, have hereunto
set my hand and seal, this Twelfth day of May, in the year of our Lord
One thousand eight hundred and seventy nine.