An Improved Furnace for the Production of Carbide of Calcium.
Year: 1897

page_text: Date of Application, 10th July, 1897-Accepted, 14th Aug., 1897
COMPLETE SPECIFICATION.
An Improved Furnace for the Production of Carbide of Calcium.
I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., of 18, Buckingham
Street, Strand, London, Patent Agent, do hereby declare the nature of this in-
vention a communication to me from abroad by Hermann Colberg, Adrien
Serret and Felix Amigo, of Ibero, and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:-
This invention which relates to introducing acetylene gas into the fuel burning
chambers of furnaces either by itself or in combination with other combustible
gases thus enabling by the production of an exceedingly high temperature the
production of carbide of calcium.
This introduction of acetylene is independent of the form of furnace used which
can be of any usual construction and contains any number of fuel burning chambers
the essential feature being the method and introduction by means of one or more
injectors arranged in the furnace of acetylene so as to form an auxiliary combus-
tible to the ordinary fuel in process of consumption in the furnace and producing
consequently an increased temperature.
The gas can be introduced into the furnace by means of either one or several
injectors and will serve its purpose either by itself or mixed with other gases
which support combustion such as oxygen or air.
The accompanying drawing represents section of a type of furnace of which AA
is the melting chamber or crucible in which the material to be acted on is shown
as B.
CC is the solid and ordinary fuel which is placed in the space between the
crucible and the exterior wall D) of the furnace. E is a hole with a plug E¹
in the top of the furnace which serves for the introduction of the material into the
crucible. F are two openings provided with plugs F1 F1 for introducing
the fuel C C. G represents the flue. HH are two conducts by means of which the
carbide formed is conveyed to the chamber R from which it is extracted through
the openings I I each conduct being provided with a grating P P of suitable
substance preventing the material falling into the conducts H before it is melted;
the conducts H are also closed by plugs H' H' which can be opened at pleasure.
J is a tube by means of which the acetylene gas is injected. K is also a tube
for the injection of oxygen or air, the gases conveyed by the respective tubes J and K
enter the hollow ball L in which they mix and leave by the outlet entering
the fuel chamber where they ignite R is a chamber in which the tubes J and K
and the ball L are fixed it contains water introduced into it by the tube N and
leaving the tube N¹ in the form of a constant current so as to avoid the fusion
of the injecting apparatus. O is an outlet tube for steam generated in the
chamber R.
It will be readily seen from the description of the invention and the drawing
described that the acetylène passing along the tube J and the air or other gas
passing along the tube K meet in the ball where they mix and are further
12.

page_text: conveyed through the outlet M into the chamber of the furnace containing the
solid burning fuel and in company therewith cause the desired increase of the
pemature.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed we declare that what we claim
is:―
A furnace for employing acetylene gas for the formation of carbide of calcium
having one or more injectors for acetylene gas or for the combination of mixture
of said gas with other gas or gases for supporting combustion, in order that such
gas or mixture of gases may be used in combination with any other combustible
in the furnace for the production of a great heat for the fusion of the carbon
and lime for the formation of carbide of calcium.
W