An Improved Method of and Means for the Manufacture of Lamp Black and other Carbon of Great Density.
Year: 1898

page_text: Date of Application, 28th May, 1898-Accepted, 2nd July, 1898
COLLEIN DI MOITIATION.
An Improved Method of and Means for the Manufacture of Lamp
Black and other Carbon of Great Density.
I, GOTTFRIED WEGELIN, of Rondorf, near Cologne, in the German Empire,
Engineer, 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.
In the manufacture of the lamp black or other carbon used for are lamp carbons,
battery plates etc., as carried on at present there are a great many disadvantages
and an excessive amount of material is required for combustion, because the
peculiar dense form of lamp black or carbon which is absolutely necessary for the
above purposes, can only be obtained by forced feeding of the furnace with
materials of combustion. It very often happens that heavy flames and gases of
combustion rich in oil cannot pass quickly enough into the rear chamber which is
generally made of brick work or masonry, on account of the narrow section of the
furnace and exit flue. In consequence the flames and gases are liable to rush out-
wards through the feed orifice with great force and thus endanger the attendants.
This invention is designed to remedy the above disadvantages and relates to the
manufacture of lamp black and other carbon of great density in such a manner
that the object in view is attained with greater certainty, and with less consumption
of material for combustion than hitherto. The essence of the invention is that
a uniform pressure is exerted on all parts of the flame either by the application of
compressed air, or by a suitable annular feed of air, the effect of which is the
narrowing or compression of the flame, and consequent compression of the light
atoms of carbon into the dense form, so that the dense carbon is easily and quickly
separated in the chambers.
In order that this invention may be the better understood I now proceed to
describe the same, reference being had to the accompanying drawings and to the
letters and figures marked thereon.
Figures 1 to 3 show three different forms of construction, as examples as to how
the invention may be carried into effect.
The material for combustion to be used, is fed continuously or intermittently
into a receiver (, if it be solid or liquid, or to a suitable burner, if it be gaseous.
In order to exert pressure on the flame of combustion by a suitable feed of air,
a narrow annular space for the admission of air is provided immediately above the
receiver a and between the latter and the furnace b, in immediate proximity to
the base of the flame. Air enters through the annular space with great rapidity
and strikes the flame in a nearly horizontal direction compressing the latter so
that a double conical formation is produced as shown in Figures 1 and 2.
The section of the flame may be narrowed by the extension of the wall c of the
furnace directly over the air space as shown in Figure 1 or by the reduced cross
section of the furnace as shown in Figure 2.
In a similar manner the pressure on the flame of combustion may be effected
from the centre as shown in Figure 3, instead of from the circumference as shown
in Figures 1 and 2. This is conveniently effected by an air admission tube extend-