Illuminating and Heating Gas and Ooke.
Year: 1887

page_text: Date of Application, 28th. May, 1887 .
Complete Left; 28th Feb:; 1888
Complete Accepted; 20th Apr., 1888
Illuminating and Heating Gas and Ooke.
Í, WILHELM BÄCKER of the town of Budweis, in the Kingdom of Bohémia and
German Empire, Manager of Gas Works do hereby declare the nature of my
invention to be as follows:-
This invention relates to an improved process of treating tar for producing in the
first place; gas specially applicable for illuminating and heating purposes, and in the
the second place, an excellent quality of coke, which latter comprises the residue of
said process.
The tar which is employed to carry out my process, is intimately mixed or
amálgamated in a suitable stirring apparatus, with an appropriate quantity of either
coke, coal, soot or cement, which said substances or materials must however have
previously been ground to a fine powder or flour. This mixture is now fed or introduced
in' to a red hot retort, either continuously or at intervals.
The beforementioned powdered substances or materials can be added to the tar
either separately or intermixed with each other according to the judgment or discretion
of the operator.
The herein described process is carried out or effected, in a general sense, similar
to those at present in vogue in the well known oilgas works, the only difference being
that in my process great care must be taken that the aforementioned amalgamated
mass which is to be evaporised, is poured or otherwise introduced direct into the hottest
part of the glowing retort.
The heat in' said glowing retort causes the tar to develope certain vapours which
combine with the ingredients of the substances or materials added to or intermixed
with the tár, and so produce permanent gases, which then escape through a suitable
discharge pipe. The residue remaining in the retort; consists of an excellent quality
of coke: The spirits of tar or coal oil separated from the vapours while passing
through the outlet pipes and condensing devices of the retort, are re-operated on in
the same manner as the tar itself.

page_text: WAS
343
I, WILHELM BAECKER of the Town of Budweis, in the Kingdon of Bohemia and
German Empire, do hereby declare the nature of my said invention and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement :-
This invention relates to an improved process of treating tar for producing, in the
first place, gas, which is specially applicable for illuminating and heating purposes,
and in the second place, an excellent quality of coke, which latter comprises the
residue of said process.
The tar which is employed to carry out my said process is intimately mixed or
amalgamated in a suitable stirring apparatus, with an appropriate quantity of either
coke, coal, soot or cement, which said substances or materials must, however, have
previously been ground to a fine powder or flour, whereupon this mixture is fed or
introduced into a red hot retort, either continuously or at intervals. These substances
or materials can be added to the tar either separately or intermixed with each other
according to the judgment or discretion of the operator.
My said improved process is carried into effect, in a general sense, similar to those
at present in vogue in the well known oil-gas works, the only difference being that in
my process great care must be taken that the aforementioned amalgamated mass,
which is to be evaporised, is poured or otherwise introduced direct into the hottest
part of the glowing retort. The heat in said retort causes the tar to develope certain
vapours, which combine with the ingredients of the substances or materials added to
or intermixed with the tar and in this manner produces permanent gases, which then
escape through a suitable discharge pipe. The residue remaining in the said retort
consists of an excellent quality of coke, and the spirits of tar or coal oil separated from the
vapours while passing through the outlet pipes and condensing devices of the retort,
are re-operated on in the same manner as the tar itself.
After having made numerous experiments I find that in order to attain the most
favorable results with my improved process, it is advisable to intimately mix or
amalgamate the tar with a suitable quantity of wood shavings or powdered oak bark,
that is, tan, but I desire it to be understood that a mass of this kind can be employed
alone or in combination with the aforementioned mixture of finely powdered coal, coke
or cement, and it will be evident that when either of the last mentioned materials are
employed, the quantity of each to be added to the tar varies and will always be
determined according to the illuminating power of the gas it is intended to attain and
also according to the kind of retort in which the process is carried out.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I claim is :
1. In the herein before described process for producing illuminating and other gas
and coke, the use of powdered coke, for itself alone or in combination with powdered
coal, cement or soot, substantially in manner and for the purpose set forth.
2. In the hereinbefore described process, the use or employment of a mixture of
wood shavings or oak bark, i.e., tan, in a finely powdered state, for itself alone or in
combination with an amalgamated mass of coke, coal cement or soot, substantially in
manner and for the purpose set forth.
Dated this 28th day of Feb 1888
GEO. DOWNING,
Agent for Applicant.