A NEW AND IMPROVED METHOD OF AGGREGATING COAL-DUST
Year: 1864

page_text: LETTERS PATENT to Frederick Tolhausen, of 149, Boulevard Magenta,
Paris, Patent Agent, for the Invention of "A NEW AND IMPROVED
METHOD OF AGGREGATING COAL-DUST."-A communication from Charles
Noble of New York. United States of America. Merchant.
Sealed the 16th June 1865, and dated the 21st December 1864.
PROVISIONAL SPECIFICATION left by the said Frederick Tolhausen at.
the Office of the Commissioners of Patents, with his Petition, on
the 21st December 1864.
I, FREDERICK TOLHAUSEN, of 149, Boulevard Magenta, Paris, Patent Agent,
do hereby declare the nature of the said Invention for "A NEW AND IMPROVED
METHOD OF AGGREGATING COAL-DUST," a communication to me from Charles
Noble, of New York, United States of America, Merchant, to be as
follows:-
The object of this Invention is to utilize waste coal-dust derived from
charcoal, anthracite, bituminous, animal, and other coal, and to produce.
therefrom a fuel which is equal in every respect to the best coal.
The Invention consists in a composition of coal-dust or waste coal with..
starch water or a hydrated solution of dextrine, or other adhesive products.
derived from wheat, rye, corn, potatoes, rice, or other organic bodies con--
taining starch or dextrine, in such a manner that by the addition of the
solution of starch or dextrine the coal-dust or waste coal is agglomerated.
without the addition of any non-combustible material, such. as lime or clay,

page_text: and a fuel is produced which gives considerable heat, and leaves a com-
paratively small quantity of ashes.
In order to aggregate the coal-dust or waste coal, I saturate the same with
starch water, or a bydrated solution of dextrine, or other adhesive bodies, as
above stated, of sufficient strength to produce the desired result. When the
coal-dust or waste coal is thoroughly saturated it forms a plastic mass, which
can be readily moulded into cakes of the desired size to suit convenience, and
if desired suitable machinery may be employed similar to brick presses to
mould and press these cakes. When moulded the cakes are dried either in
the open atmosphere or by artificial heat, and then they are ready for con-
sumption. By the starch water or solution of dextrine the coal-dust or waste
coal is cemented together in such a manner that the cakes when properly
dried can be exposed to the changes of the atmosphere without falling to
pieces. They are hard and solid, and by the starch and dextrine the heating
power and the combustibility of the article is increased. No cement of an
incombustible nature is added, which only increases the bulk, and reduces the
heating power of the compound, and a fuel is produced which can be used
with advantage in grates, stoves, furnaces, in fact, whenever and wherever
solid coal is used.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederick Tolhausen in the Great Seal Patent Office on the
19th June 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
TOLHAUSEN, of 149, Boulevart Magenta, Paris, Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-first day of December, in the year of our
Lord One thousand eight hundred and sixty-four, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Frederick Tolhausen, Her special licence that I, the said Frederick
Tolhausen, my executors, administrators, and assigns, or such others as I, the
said Frederick Tolhausen, 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 "A NEW
AND IMPROVED METHOD OF AGGREGATING COAL-DUST," a communication to me from

page_text: Charles Noble, of New York, United States of America, Merchant, upon the
condition (amongst others) that I, the said Frederick Tolhausen, my executors
or administrators, by an instrument in writing under my, or their, or one of
their bands 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 I, the said Frederick Tolhausen, do hereby declare
the nature of the 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:-
The object of this Invention is to utilize waste coal, coal-lust derived from
charcoal, anthracite, bituminous, animal, and other coal, and to produce
therefrom a fuel which is equal in every respect to the best coal.
The Invention consists in a composition of coal-dust or waste coal with
starch water, or a hydrated solution of dextrine, or other adhesive products
derived from wheat, rye, corn, potatoes, rice, or other organic bodies con-
taining starch or dextrin, in such a manner that by the addition of the
solution of starch or dextrine the coal-dust, or waste coal is agglomerated
without the addition of any non-combustible material, such as lime, clay, etc.,
and leaves a comparatively small quantity of ashes.
In order to aggregate the coal-dust or waste coal, I saturate the same with
starch water, or a bydrated solution of dextrine, or other adhesive bodies, as
above stated, of sufficient strength to produce the desired result. When the
coal-dust or waste coal is thoroughly saturated, it forms a plastic mass, which
can be readily moulded in cakes of the desired size to suit convenience, and if
desired suitable machinery may be employed similar to brick presses to mould
and press these cakes. When moulded the cakes are dried, either in the
open atmosphere, or by artificial heat, and then they are ready for con-
sumption. By the starch water or solution of dextrine the coal-dust or waste
coal is cemented together in such a manner that the cakes when properly
dried can be exposed to the changes of the atmosphere without falling to
pieces. They are hard and solid, and by the starch or dextrine the heating
power and the combustibility of the article is increased. No cement of an
iucombustible nature is added which only increases the bulk and reduces the
heating power of the compound, and a fuel is produced which can be used
with advantage in grates, stoves, furnaces, in fact, whenever and whereever
solid coal is used.

page_text: What I claim as new and desire to secure by Letters Patent is, a
compound made substantially as and for the purpose herein set forth.
In witness whereof, I, the said Frederick Tolhausen, have hereunto set
my hand and seal, this Fifteenth day of June, A.D. 1865.