Improvements in the Manufacture of Carburet of Calcium.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Carburet of Calcium.
JOHN BILBIE, of 80, Queen Victoria Street, E.C., London, Mechanical Engineer;
and JAMES ALFRED WANKLYN, of New Malden, Surrey, Chemist, do hereby
declare the nature of this invention to be as follows:-
In carrying our invention into practice we make a mixture of equal parts of
powdered quick lime and of carbon the latter in the form of pulverized coal or
anthracite or in any other suitable form.
This mixture which may be moistened with liquid gas tar in order to impart
sufficient cohesion thereto is placed in any convenient vessel or crucible lined with
a layer of quick lime. A glowing lump of coke is subsequently placed on the
top of the mixture in the crucible and a fine jet of oxygen under high pressure
is directed down upon it, whereupon carbonic oxide and carbonic acid are pro-
duced and disengaged and a residuum of carburet of calcium is left in the
crucible.
Dated this 20th day of April 1899.
DE KATOW & Co.,
Agents for the Applicants.
Improvements in the Manufacture of Carburet of Calcium.
JOHN BILBIE, of 80, Queen Victoria Street, in the City and County of London,
Mechanical Engineer, and JAMES ALFRED WANKLYN, of "The Laboratory," New
Malden, in the County of Surrey, England, Professor of Chemistry, 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:-
Our invention which has for its object to prepare carburet of calcium by
means of a special mixture treated in a furnace or crucible of suitable con-
struction is illustrated in the accompanying drawings wherein Fig. 1 is a vertical
central section and Fig. 2 a horizontal section on line at of Fig. 1. This furnace
consists of an outer casing c preferably of iron provided with a thick lining 7 of
quick lime and two openings closed by doors d, one of which opening can be
used as a feed opening while the other serves as a discharge opening. In the
centre of this furnace which as shown in Fig. 2 has an elliptical form stands a
quadrangular pyramid or pedestal of quick lime p supporting a central vertical
and removable pipe ¹ made entirely of quick lime and the upper and outer part
of which is enclosed in an iron casing o. s are suitable iron stays: Oxygen

page_text: is fed into this furnace through the bent blast pipe which enters the lime pipe i¹
at the top. The glowing lumps of coke are introduced through the opening
close by the door o. We place in the furnace a mixture F of equal parts of pow-
dered quick lime and of carbon which may be moistened with liquid gas tar to
impart sufficient cohesion thereto. Lumpse of glowing coke are subsequently
placed on the top of such mixture and the oxygen blast is allowed to play thereon
through the pipes when a tremendous heat is raised and the mixture F is
gradually converted into carbide of calcium which is subsequently removed
through the discharge opening; carbonic oxide and carbonic acid being dis-
engaged and escaping at a through the pipe and through the vents
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
..
1.—The process for manufacturing carburet of calcium by partly filling a fur-
nace or crucible with a mixture of powdered quick lime and pulverized carbon,
then placing thereon glowing coke and finally directing a blast of oxygen down
upon such coke, substantially as herein described.
2. The furnace for carrying out the above process consisting of an outer casing
of iron and an inner lining of quick lime and containing a pedestal or block
of the same material and a central gas pipe supported by this block and entirely
made of quick lime but partly enclosed in an iron casing, substantially as herein
described and shown.