IMPROVEMENTS IN FURNACES FOR MELTING IRON
Year: 1871

page_text: LETTERS PATENT to Marvin Wilson, of Coldspring, New York, United
States of America, now of No. 8, Southampton Buildings, London,
for the Invention of "IMPROVEMENTS IN FURNACES FOR MELTING IRON.”
COMPLETE SPECIFICATION filed by the said Marvin Wilson at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 27th November 1871, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MARVIN
WILSON, of Coldspring, New York, United States of America, now of
No. 8, Southampton Buildings, London, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS IN
FURNACES FOR MELTING IRON," and have petitioned Her Majesty to grant
Section of the Patent Law Amendment Act, 1852.
5 TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MARVIN
WILSON, of Coldspring, New York, United States of America, now of
No. 8, Southampton Buildings, London, send greeting.

page_text: introduce the charges of coal and iron is provided with a hood a, which
is constructed with an iron shell a¹ lined with fire-bricks a³. When the
furnace is working this hood occupies the position shewn in Figure 1,
that is to say, it covers the top of the furnace, its open side com-
municating with the chimney through the aperture b, but when the
furnace is to be charged the said hood is removed therefrom. The
removal and replacing of the hood are effected by the crane c.
For very
large furnaces the hood may be formed in two parts, each being removed
separately. Upon the bottom of the furnace I place two rests or bearing
pieces d, which are built up above the level of the bottom to support the
masses of iron and prevent their resting entirely upon the coal. If the
heavy pieces of iron to be melted are laid upon the fire, they will press
down upon it and act to force the coal out from beneath them towards
the sides of the furnace, and thus the fire will have little or no effect
upon them; but by having the rests arranged as shown in the Drawing,
so that the weight of the iron is supported by the said rests, the coal will
not be displaced. The fire will therefore have the desired effect, and will
speedily reduce the charge of iron in the furnace to a molten state. The
bottom of the furnace consists of the hinged plates e, e, f, f, as clearly
shown in Figure 3. These plates are closed and secured when the
furnace is working by the props or posts g, but may be opened. when
desired by removing the said props; they therefore afford a convenient
means for obtaining access to the bottom of the furnace for cleaning and
other purposes.
It will be observed that the furnace shown in the Drawing is oval in
transverse section. This shape is preferable in a furnace for melting
very large masses of iron, but I sometimes, and especially where the
furnaces are used for lighter work, make them circular.
Having thus fully described my said Invention, and shown how the
same may be conveniently and advantageously carried into practice, I
claim,―
First. Providing the furnace with a removeable top portion or hood
constructed and fitted upon the furnace as herein set forth, for the
purpose specified.
'
Second. Providing the bottom of the furnace with rests or bearing
pieces as herein set forth, for the purpose specified.

page_text: Third. The combination with the shell or body of the furnace of the
removeable portion or hood, the rests or bearing pieces, and the hinged
bottom as herein set forth, for the purposes specified.
In witness whereof, I, the said Marvin Wilson, have hereunto set
my hand and seal, this Twenty-fifth day of November, in the 5
year of our Lord One thousand eight hundred and seventy-one.
Witness,
WM. ROBT. LAKE,
8, Southampton Buildings,
London.
MARVIN WILSON. (L.S.)