Improvements in Treating and Utilizing Certain Gases resulting from Carbonization of Coal.
Year: 1894

page_text: Date of Application, 3rd Mar., 1894
Complete Specification Left, 30th Nov., 1894-Accepted, 26th Jan., 1895
Improvements in Treating and Utilizing Certain Gases resulting
from Carbonization of Coal.
I, ROBERT DUNLOP, Manager of Stanrigg Oil Company, Airdrie in the
County of Lanark do hereby declare the nature of this invention to be as
follows:-
It has been found that in compressing ordinary gas obtained from coal, shale
or mineral oils it is thereby deprived of a considerable portion of its illuminating
power and in order to retain a good illuminating power in such gas after com-
pression it is necessary to produce it from oils or other materials yielding a gas of
very high illuminating power but such gas is thus rendered much more expensive
than ordinary coal gas.
In this and other countries great quantities of gas are now produced at what are
known as coal carbonizing works and at coal coking works where by scrubbing
or washing it with creosote oil or by other methods it is wholly or to a great
extent deprived of its illuminating power. Such gas is of little or no value as an
illuminant and can be produced or purchased very cheaply whilst it does not lose
in value by compression.
The object of my invention is to utilize such gas for illuminating purposes more
especially for use in railway trains, tramcars and other vehicles where it is
necessary or advantageous to carry gas in small tanks or vessels under high
pressure. For this purpose I compress this non illuminating gas by any ordinary
method of compressing into the vessel which is to hold it and from such vessel I
lead the gas at its full pressure or through a pressure regulator at reduced pressure
by pipes or otherwise to the point at which it is to be used for lighting as at a
burning jet or burner the gas being caused to pass on its way thereto through a
chamber containing benzole, benzine, gasoline or other similar products capable of
enriching the gas. In passing through this chamber the gas absorbs as much of
the benzole or other enriching substance as gives it a high illuminating power, and
a good lighting gas is thus obtained at a very moderate cost.
Dated 2nd March 1894.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in Treating and Utilizing Certain Gases resulting
from Carbonization of Coal.
I, ROBERT DUNLOP, Manager of Stanrigg Oil Company, Airdrie, in the
County of Lanark, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
It has been found that in compressing ordinary gas obtained from coal shale or
mineral oils it is thereby deprived of a considerable portion of its illuminating

page_text: power and in order to retain a good illuminating power in such gas after com-
pression it is necessary to produce it from oils or other materials yielding a gas of
very high illuminating power but such gas is thus rendered much more expensive
than ordinary coal gas.
In this and other countries great quantities of gas are now produced at what are
known as coal carbonizing works and at coal coking works where, by scrubbing
or washing it with creosote oil or by other methods, it is wholly or to a great
extent deprived of its illuminating power. Such gas is of little or of no value as
an illuminant and can be produced or purchased very cheaply whilst it does not
lose in value by compression.
The object of my invention is to utilize such gas for illuminating purposes more
especially for use in railway trains, tram cars and other vehicles where it is
necessary or advantageous to have gas in tanks or vessels under pressure. For
this purpose as illustrated in diagramatic form by the accompanying drawing I
compress this non-illuminating gas by any ordinary method of compressing into a
vessel A which is to hold it and from such vessel A I lead the gas at its full
pressure or through a pressure regulator B at reduced pressure by pipes Cor
otherwise to the point at which it is to be used for lighting as at a burning jet or
burner D the gas being caused to pass on its way thereto through a chamber E
containing benzole, benzine, gasoline or other similar products capable of enriching
the gas.
In passing through this chamber or saturator E the gas absorbs as much
of the benzole or other enriching substance as gives it a high illuminating power,
and a good lighting gas is thus obtained at a very moderate cost..
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 :-
The treatment and utilization of gases resulting from the carbonization of coal
substantially in the manner and for the purpose set forth.
Dated this 29th day of November 1894.
WALLACE FAIRWEATHER,
Chartered Patent Agent,
62, St. Vincent Street, Glasgow, Agent for the Applicant.