Improvements in Cupolas.
Year: 1891

page_text: Date of Application, 9th Apr., 1891
Complete Specification Left, 9th June, 1891-Accepted,. 11th July, 1891
UYIONAL DE MOITICATION.
Improvements in Cupolas.
I, JAMES DAVIES WILSON, of Stands House, Distington, near Whitehaven,
Blast Furnace Manager, do hereby declare the nature of this invention to be as
follows:-
This invention relates to cupolas for melting iron and it consists of the application
to such cupolas of an improved construction of heater by means of which the air
blast is heated in its course to the tuyeres by the flame and waste heat from the fuel
used in melting the metal.
Under the invention the cupola is built with an arched or other crown or cover
having one or more openings over which is erected a double cased funnel. The
inner casing of the funnel which serves as the outlet for the flame and gaseous
products of combustion is made preferably of cast iron, and the outer casing is or
may be made of wrought iron plates having a lining of brickwork or like material
on the inside to diminish radiation of heat. To the annular space formed between
the casings the air blast is admitted by an inlet pipe preferably at or near the top
and after being heated it passes off' near the lower end of the casing by an outlet
pipe leading to the tuyeres.
One or more such air blast heaters may be applied to a single cupola or a single
heater may be connected to two or more cupolas.
Dated this the Eighth day of April 1891.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION..
Improvements in Cupolas.
I, JAMES DAVIES WILSON, of Stands House, Distington, near Whitehaven,
Blast Furnace Manager, 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 :-
This invention relates to cupolas for melting iron and steel or other metals and it
consists of the application to such cupolas of an improved construction of heater by
means of which the air blast is heated in its course to the tuyeres by the flame and
waste heat from the fuel used in melting the netal.
Under the invention and as represented in vertical section at Figure 1 and in
horizontal section at Figure 2 of the accompanying drawings, the cupola is built
with an arched or other crown or cover A having one or more openings B, over
which is erected a double cased funnel C C¹.
The inner casing C of the funnel which serves as the outlet for the flame and
gaseous products of combustion is made preferably of cast-iron with flanged ends cc,
and the outer casing C', is or may be made of wrought iron plates c¹ having a lining
of brickwork or like material on the inside to diminish radiation of heat.
To the annular space formed between the casings, the air blast is admitted by an
inlet pipe D preferably at or near the top and after being heated, it passes off' near
the lower end of the casing by an outlet pipe E leading to the tuyeres.
One or more such air blast heaters may be applied to a single cupola, or a single
heater may be connected to two or more cupolas.

page_text: 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
The combination with a cupola of an air heater, constructed substantially as
described.
Dated this Eighth day of June 1891.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.