Improvements in the Manufacture or Production of Lamp Black.
Year: 1893

page_text: Date of Application, 25th Apr., 1893
Complete Specification Left, 24th Feb., 1894-Accepted, 24th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture or Production of Lamp Black.
I ROBERT IRVINE of Royston Granton near Edinburgh in the County of
Midlothian Chemist do hereby declare the nature of this invention to be as
follows:-
My invention relates to processes wherein lamp black is formed by the impinge-
ment of flames of gas rich in carbon against metallic surfaces or by the burning of
gas rich in carbon in the presence of but a limited quantity of air the carbon
products being collected in the usual manners and my invention has for its object to-
provide means whereby the production of lamp black is effected in a more efficient
and economical manner than hitherto. With this object I employ tars or oils
which are rich in carbon and I pass them in regulated quantity and preferably in a
finely divided condition or spray into retorts or vessels containing coke or other
carbonaceous matter in a state of incandescence by which means the oils or tars so
employed or treated are broken up into permanently gaseous hydrocarbons or
gases and I also pass into the said retorts or vessels air and steam or steam alone
so that the carbonic oxide hydrogen and other gases formed by the decomposition of
the air or steam will combine with the carbon of the tars or oils and produce a gas
which by burning in the manners aforesaid will produce lamp black. The oils or
tars which I may employ are such for example as crude or refined petroleum shale
or like oils, gas or shale tars, or oils obtained by the distillation of these tars and
known as creosate and other like oils rich in carbon. The residuum consisting of
carbon which may remain in the retorts or vessels may constitute or in part
constitute the incandescent material for the decomposition of the gas and air and
the tars or oils.
Dated thin 5th to of Au 1002
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in the Manufacture or Production of Lamp Black.
I, ROBERT IRVINE of Royston Granton near Edinburgh in the County of
Midlothian Chemist, 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 :-
My invention relates to processes wherein lamp black is formed by the impinge-
ment of flames or gas rich in carbon against metallic surfaces or by the imperfect
combustion of gas rich in carbon in the presence of but a limited quantity of air the
carbon produced being collected in the usual manner and my invention has for its
object to provide means whereby the production of lamp black is effected in a
more efficient and economical manner than hitherto. With this object I employ
tars or oils which are rich in carbon and I pass them in regulated quantity and
preferably in a finely divided condition or spray into a retort or vessel or retorts or
vessels such for instance as those commonly known as gas producers containing
coke coal or other carbonaceous matter in a state of incandescence by which means
the oils or tars so employed or treated are broken up into gaseous hydrocarbons or
Price d

page_text: gases and I also pass into the said retorts or vessels air or steam or both so that the
carbonic oxide hydrogen and other gases formed by the decomposition of the air
or steam or both will combine with the carbon of the tars or oils and produce a
gas which by imperfect combustion in the manners aforesaid will produce lamp
black. The oils or tars which I may employ are such for example as crude or
refined petroleum, shale, or like oils, gas tars or shale tars, or oils obtained by the
distillation of these tars and known as creosote and other like oils rich in carbon.
The residuum consisting of carbon which may remain in the retorts or vessels may
contribute to the incandescent material for the formation of the gases.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is :-
In the manufacture of lamp black passing tars or oils (which are rich in carbon)
and preferably in a finely divided condition or spray and together with steam or
air or both steam and air into retorts or vessels containing incandescent
carbonaceous matter thereby producing gas and afterwards producing lamp black
therefrom by imperfect combustion all substantially as hereinbefore described.
Dated this 24th day of February 1894.
JOHNSONS & WILLCOX,
Agents.