An Improvement in the Construction of Furnaces for Refining Iron, Steel, or other Metals.
Year: 1887

page_text: Date of Application, 8th Aug., 1887
Complete Left, 7th May, 1888
Complete Accepted, 8th June, 1888
An Improvement in the Construction of Furnaces for Refining Iron,
Steel, or other Metals.
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:
1, JOSEPH TOUSSAINT, of Hollywood, near Birmingham in the county of Warwick,
Scientific Chemist do hereby declare the nature of this invention to be as follows:-
This furnace is constructed as follows, namely:-
This furnace is long and horizontal and may either be round or square. The floor
or bottom of this furnace is supported by fire bricks having a chamber underneath
the furnace leading to the chimney, into which space or chamber passes the flame of
fire or flame of gas after passing over the top of the molten metal, the flame of fire or
flame of gas passing through the holes which are in the wall forming the sides of this
furnace.
The metal is thus, so to speak, completely surrounded by this same flame of fire or
flame of gas, the metal being kept in the same degree of heat for not less than six or
seven hours. This same flame that passes underneath the floor giving heat to the
metal all over the furnace alike, afterwards finding its way into the chimney after
passing through the chamber under the floor of the furnace.
The fire place of this furnace is round, square, or other shape; but long and
vertical.
The fire place is constructed with fire bricks and between each brick there is a little
space which form small openings or holes which give the necessary draft or air to the
fire place of this furnace answering the purpose of a blower.
The fire place of this furnace should be lower (about three feet) than the bottom
of the furnace in order to form a good air current or passage, thus giving great heat.
This furnace is specially constructed for receiving molton iron direct from the
converter, blast surface, or cupola.
DU L OL SA 1987
H. GARDNER,
166, Fleet Street, London,
Agent for the said Joseph Toussaint.

page_text: COMPLETE SPECIFICATION.
:
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:
An Improvement in the Construction of Furnaces for Refining Iron,
Steel, or other Metals.
I, JOSEPH TOUSSAINT, of Holmes Hall, near Brigg, Lincolnshire, Scientific Chemist,
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 construct a furnace for refining iron, steel, and
other metals in such a manner that the heat from the furnace proper has full play both
under, over, and around the metal containing bason for maintaining the same degree
of heat at all parts, the furnace being specially constructed for receiving molten metal
direct from the converter, the blast furnace, or cupola.
The following description explains how my novel arrangement of furnace is con-
structed, reference being had to the annexed drawings.
Figure 1 is a longitudinal section, and Figure 2 a half longitudinal plan.
The fire place or heat producing chamber may be of round, square, or other shape.
The floor or bottom is supported by fire bricks so forming a chamber under said,
floor. This fire place is below the level of the bason and the side walls have apertures
for increasing the draught and answers the purpose of a blower.
The heat rises from this furnace and passes over a bridge on to the top of the metal
within the bason, and acts upon the surface of the metal. It then passes over the sides
of the bason into side passages and through a net work of other passages formed.
between the bottom of the bason and the flooring before entering the chimney,
consequently the sides of the bason and the bottom of the bason are kept at the same
heat as the upper part of the chamber above the metal, the heat being all over the
furnace alike.
A is the fire place or heating chamber. B, B, side walls with apertures C. C.
D, D, are bars supporting this fire place in the chamber E, E, below the level of the
refining furnace.
F is the bridge over which the flame and heat must first pass into the upper part G
of the refining chamber, where it reverberates upon the surface of the metal H in the
bason I. The back of the chamber at the upper part is blocked by the wall J..
K, K, are side apertures between the wall L of the bason, down which the heat
descends (as indicated by the arrows Figure 2) and plays under and against the
bottom of the bason, this being supported by piers M, M, at intervals so that every
part of the bason partakes the same amount of heat.
N is the chimney being provided with a damper to regulate the draught.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The construction of furnaces for refining metals, in which the metal container
or bason is supported as to be entirely surrounded by heat for maintaining the same
intensity of temperature at all parts substantially as described and shown.
2. In combination with a metal container or bason of a refining furnace around
which the heat has free play, the fire place proper (or first heating chamber, if gas
flame be used) at a lower level as and for the purpose described and substantially as
shown.
H. GARDNER,
166, Fleet Street, London,
Agent for the said J. Toussaint.