IMPROVEMENTS IN REVERBERATORY SMELTING FURNACES
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex, for
an Invention of IMPROVEMENTS IN REVERBERATORY SMELTING FURNACES
communicated to him from abroad by Riley Porter Wilson, of Cleveland,
United States
PROVISIONAL SPECIFICATION left by tne said Herbert John Haddan at
the Office of the Commissioners of Patents on the 26th May 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex, "IMPROVEMENTS IN
REVERBERATORY SMELTING FURNACES," a communication to me from abroad by
Riley Porter Wilson, of Cleveland, United States,
The invention relates to improvements in reverberatory smelting furnaces, and
the object of the invention is to provide a combination of furnaces whereby to
reduce, to a metallic state, ores or minerals, by a single heat, and obtain the metals
contained in said ores or minerals, and thereby cheapen the production of iron,
steel or other metals, and improve the quality of the various metals by subjecting
them to but one melting heat.
For the above purposes I use a combination of two or more reverberatory
furnaces so arranged that the last furnace is adapted to receive fluid metal from
the other furnaces, being common reverberatory and having a depressed hearth as
a receiving furnace.
Also the combination of two or more reverberatory furnaces with inclined
hearths of the feeding furnaces, with an additional reverberatory furnace having a
depressed hearth, whereby the last named furnace is adapted to receive fluid metal
immediately from each of the other furnaces.
The furnaces in themselves are otherwise built in the ordinary way.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Herbert John Haddan in the Great Seal Patent Office. on the
24th November 1883.
IN
HERBERT JOHN HADDAN, of Kensington, Middlesex " IMPROVEMENTS
REVERBERATORY SMELTING FURNACES," a communication to me from abroad by
Riley Porter Wilson, of Cleveland, United States
The object of this invention is to provide a combination of furnaces whereby to
reduce to a metallic state ores or minerals by a single beat, and obtain the metals
contained in said ores or minerals, so as to cheapen the production of iron, steel or
other metals, and improve the quality of the various metals by subjecting them to
but one melting heat.
In the accompanying drawing, which illustrates the invention, Figure 1 is
a vertical section and Figure 2 a horizontal section of combined furnaces. Similar
letters refer to similar parts throughout the several views.
The furnace B in Fig 2 occupies the same relation to C, the receiving furnace,
as does A in Fig 1. The two furnaces A, B have one opening at the rear end of
each for connecting them with the furnace C, which is larger than either A or B,
and the hearth of C is constructed below the inclining hearths of A, B in order to
receive and hold the metal smelted by the furnaces A, B. The contents of the
furnaces can be puddled through the doors a, a; a top hole in the side of the
furnace C is operated as in common reverberatory furnaces.
The gases of combustion from the furnaces escape through flue E and stack D.
Flues b, b are provided in the masonry under the smelting floors, which serve to
cool said floors and to supply hot air or gases for combustion. The air necessary
for combustion enters the flues from the side at c and travelling in the direction of
the arrows under the furnaces, returns through a central flue d and branch flues e
before it escapes through openings f in the fire-bridge into the furnace.
Suitable draught dampers (not shown in the drawing) are provided at the air
inlets, in order to regulate the quantity of air admitted.
The method of operating these furnaces being similar to that used in ordinary
reverberatory furnaces it is not necessary to describe it, except to say that when
iron or steel is being manufactured furnace C can be used as a puddling furnace,
and the metal of the ores of iron may be converted into iron or steel, according to
the elements brought into fusion.
Instead of two furnaces three or more may be arranged in succession and operated
CLATED.
1. The combination of two or more reverberatory furnaces so arranged that the
last furnace has a depressed hearth adapted to receive fluid metal from the other
furnace or furnaces, substantially as and for the purpose described.
2. The combination of two or more reverberatory furnaces having inclined hearths
and serving as feeding furnaces, with an additional reverberatory furnace having
a depressed hearth, and being adapted to receive fluid metal immediately from each
of the other furnaces, substantially as and for the purpose described.

page_text: 3. The combination of two or more reverberatory furnaces constructed and arranged
substantially as described, with air flues heated by the furnace and arranged
substantially as described,
In witness whereof I the said Herbert John Haddan have hereunto set my hand
and seal this 24th day of November A.D. 1883.
H. J. HADDAN (LS.)