A NEW OR IMPROVED STEAM BOILER TO BE HEATED BY THE WASTE HEAT OF PUDDLING OR MILL FURNACES
Year: 1856

page_text: LETTERS PATENT to George Jackson, of Bilston, in the County of Stafford,
Iron Master, for the Invention of "A NEW OR IMPROVED STEAM BOILER TO
BE HEATED BY THE WASTE HEAT OF PUDDLING OR MILL FURNACES."
Sealed the 12th September 1856, and dated the 11th April 1856.
PROVISIONAL SPECIFICATION left by the said George Jackson at the
Office of the Commissioners of Patents, with his Petition, on the 11th
April 1856.
I, GEORGE JACKSON, of Bilston, in the County of Stafford, Iron Master,
do hereby declare the nature of the said Invention for "A NEW OR IMPROVED
STEAM BOILER TO BE HEATED BY THE WASTE HEAT OF PUDDLING OR MILL'
FURNACES," to be as follows:-
My new or improved boiler is of a cylindrical form, and is terminated by
hemispherical or nearly hemispherical ends. The boiler is set in its casing of
brickwork in a vertical position, and the hot air and the fire are made to
circulate about and through the said boiler in the following manner :--The
fire is conducted from a couple of puddling or mill furnaces through two flues
and delivered near the bottom of the boiler. After being made to circulate
about the vertical sides of the cylindrical boiler, the said fire enters a horizontal

page_text: flue passing through the boiler at a point a little bigher than its middle. The
said fire enters the said horizontal flue at both ends, and passes up a vertical
flue or chimney, which is situated in the axis of the boiler, and opens into the
said horizontal flue. A damper is situated at each end of the horizontal flue,
and by the said dampers the draught may be regulated. That part of the
vertical chimney which is within the boiler is surrounded by an air space, that
is to say, there is an annular layer of air between the chimney and the boiler,
so that the said chimney is isolated, so far as its temperature is concerned, from
the upper part of the boiler. The said isolating air space descends to a point
below the water level of the boiler, and any danger which would otherwise
attend the overheating of the chimney is avoided.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Jackson in the Great Seal Patent Office on the
8th October 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
JACKSON, of Bilston, in the County of Stafford, Iron Master, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Iler Letters
Patent, bearing date the Eleventh day of April, in the year of our Lord
One thousand eight hundred and fifty-six, in the nineteenth year of Iler
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said George Jackson, Her special licence that I, the said George Jackson, my
executors, administrators, and assigns, or such others as I, the said George
Jackson, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "A NEW OR IMPROVED STEAM
BOILER TO BE HEATED BY THE WASTE HEAT OF PUDDLING OR MILL FURNACES,"
the condition (amongst others) that I, the said George Jackson, my executors
or administrators, by an instrument in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent..
upon

page_text: NOW KNOW YE, that I, the said George Jackson, do hereby declare the
nature of the said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement
thereof, that is to say:-
My new or improved steam boiler is represented in elevation in Figure 1,
in vertical section in Figure 2, and in plan in Figure 3; which said Figure 3
also represents in plan a couple of puddling furnaces, from the waste heat of
which, or of a couple of mill furnaces, the boiler is heated. My said boiler
consists of an upright hollow cylinder a, terminated by hemispherical or nearly
hemispherical ends. The said boiler is set in a casing of brickwork 6 in a
vertical position, and the hot air and fire from the puddling furnaces c, c, are
made to circulate about and through the boiler in the following manner:-The
fire is delivered through two flues d, d, near the bottom of the boiler. After
circulating around the boiler through the circular channels e, f, the fire enters
the horizontal flue g, g. The said fire enters the flue g, g, at both ends, and
passes up the vertical flue or chimney h, which is situated in the axis of the
boiler. Dampers i, k, are situated at the ends of the flue g, g, and by the said
dampers the draught through the said chimney or flue h may be regulated.
That part of the said chimney h which is situated within the boiler is surrounded
by an air space, the said air space consisting of an annular casing, opening
into the air, and separating the chimney from the boiler. By means of the
air space the chimney h is isolated, so far as its temperature is concerned,
from the upper part of the boiler. The said isolating air space descends to
a point below the water level m of the boiler, and the danger which might
otherwise attend the overheating of the chimney is avoided.
I do not limit myself to any particular method of circulating the fire about
the sides of the boiler, as the said fire may rise from the flues d, d, passing up
the vertical sides to the horizontal flue g, g. The lower part of the chimney h
may be lined with brick.
Having now described the nature of my said Invention, and the manner of
carrying the same into effect, I wish it to be understood that I do not limit
myself to the precise details herein described, as the same may be varied with-
out departing from the nature of my said Invention; but I claim as my
Invention, the new or improved steam boiler to be heated by the waste heat
of puddling or mill furnaces, herein-before described, and illustrated in the
accompanying Drawing; that is to say, a steam boiler of a cylindrical or nearly
cylindrical figure, set vertically, and having a central chimney into which the
fire and heated air are delivered by a horizontal flue or flues after the said fire

page_text: and heated air have circulated about or impinged upon the vertical sides of the
boiler, the said chimney being isolated from the upper part of the boiler by
means of an annular air space surrounding the said chimney to a depth below
the water line of the boiler.
In witness whereof, I, the said George Jackson, have hereunto set my
hand and seal, this Seventh day of October, in the year of our Lord
One thousand eight hundred and fifty-six.
Witness,
GEORGE SHAW.
GEORGE JACKSON. (L.S.)