Improvements in Electrical Furnaces for the Manufacture of Phosphorus or other Matters capable of being Volatilized by Heat.
Year: 1891

page_text: Date of Application, 3rd Nov., 1891
Complete Specification Left, 3rd Aug., 1892-Accepted, 3rd Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in Electrical Furnaces for the Manufacture of
Phosphorus or other Matters capable of being Volatilized by
Heat.
I THOMAS PARKER Works Director of the Electric Construction Corporation
Ld. of Wolverhampton in the County of Stafford do hereby declare the nature
of this invention to be as follows :-
The object of this invention is to overcome the objections arising from the
condensation of phosphorus or other volatile matter in the upper part of the charge
of the electrical furnace.
According to this invention the furnace is provided at its upper part with a
portion or addition which constitutes a retort which is heated to retain the upper
portion of the charge at such a temperature as to prevent condensation of the
phosphorus or other volatile matter and by applying heat to the charge at this part
economizing electrical heat in the arc of the furnace. When the charge is fed
through a hopper or the like by which the furnace is sealed there may be at the
upper part of the furnace a hollow chamber formed by a wall outside the retort
like part leading from the hopper to the furnace and in this hollow chamber a flame
or other means of heating may be used to retain the retort like part at the necessary
temperature.
Dated this 3rd day of November 1891.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, Agents.
COMPLETE SPECIFICATION.
Improvements in Electrical Furnaces for the
of
Manufacture
Phosphorus or other Matters capable of being Volatilized by
Heat.
I THOMAS PARKER Works Director of the Electric Construction Corporation
Limited of Wolverhampton in the County of Stafford 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:-
The object of this invention is to overcome the objections arising from the con-
densation of phosphorus or other volatile matter in the upper part of the charge
of the electrical furnace.
Figure 1 of the accompanying drawing illustrates in vertical section and
Figure 2 in horizontal section an arrangement according to my invention which
will serve to illustrate the way in which it may be carried into effect.
According to this invention the furnace is provided at its upper part with a
portion or addition A which constitutes a retort which is heated to retain the upper
portion of the charge at such a temperature as to prevent condensation of the
phosphorus or other volatile matter and by applying heat to the charge at this
part economizing electrical heat in the arc of the furnace. The heat may be
applied to this part in any suitable way either by independent heat by gas flames
or otherwise for instance by heat applied through the encircling flue C or by
conduction of heat from the lower part of the charge. When the charge is fed
through a hopper or the like by which the furnace is sealed the hopper or the like
may terminate the retort-like part A and there may be at the upper part of the
furnace a hollow chamber B formed by an extension of the wall outside the
... od

page_text: retort-like part A leading from the hopper to the furnace and in this hollow
chamber a gas or other flame or other means of heating may be used to retain
the retort-like part A at the necessary temperature to prevent the said objection-
able condensation.
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 :-
1. In electrical furnaces for the manufacture of phosphorus, or other matter
capable of being volatilized by heat, an addition, such as A, for the purpose
described.
2. An electrical furnace provided with an addition, such as A, terminating in a
hopper, and surrounded by a chamber, such as B, for the purpose, and substantially
as, hereinbefore described, and shewn in the accompanying drawings.
Dated this 3rd day of August 1892
J. H. JOHNSON & Co.,
Agents.