IMPROVEMENTS IN HOT BLAST STOVES OR FURNACES USED IN THE MANUFACTURE OF IRON
Year: 1871

page_text: LETTERS PATENT to George Jones, of Dudley, in the County of
Worcester, Iron Master, and Edward Griffin Jones, of Dudley,
aforesaid, Iron Master, for the Invention of ** IMPROVEMENTS IN HOT
PROVISIONAL SPECIFICATION left by the said George Jones and
Edward Griffin Jones at the Office of the Commissioners of
Patents, with their Petition, on the 20th November 1871.
We, GEORGE JONES, of Dudley, in the County of Worcester, Iron
Master, and Edward Griffin Jones, of Dudley, aforesaid, Iron Master,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN HOT BLAST STOVES OR FURNACES USED IN THE MANUFACTURE OF IRON," to be
as follows:-
Our Invention relates to the stoves or furnaces employed for heating
the blast of blast furnaces used in the manufacture of iron, and consists

page_text: of the improvements herein-after described, in constructing and arranging
the parts of the said stoves or furnaces.
Our Invention is applicable to hot blast stoves or furnaces heated by
the waste heat of the blast furnace, or heated by independent fires.
We arrange the vertical pipes through which the blast passes, and by
which it is heated, either in the form of a circle or other figure, around one
or more vertical hollow columns or flues. The space between the hollow
column or flue and the outer brickwork of the stove constitutes a vertical,
annular, or tubular chamber in which the blast pipes are fixed. The
waste heat from the blast furnace or the heat from the independent fires
ascends into the said annular space or chamber at or near its bottom,
the inner portion of the said space having an arch containing openings,
through which openings the waste heat or fire passes. The object of
this arch is to protect the lower ends of the blast pipes from the too
violent action of the fire. The flame and heated air ascending pass
around and about the blast pipes, that portion of the flame passing
through the arch described striking obliquely against the pipes, and
giving a rotatory or circulating motion to the flame and heated air around
the said pipes. The waste heat or fire passes out of the said annular
chamber near its top on its outer side; it is then conducted by flues over
the tops of the blast pipes, the said flues converging towards and opening
into the central hollow column or flue described. The said column or
flue becomes intensely heated by the descending flame and the heated air,
and its heat radiates on to the blast pipes, and contributes largely to the
heating of the blast. The descending current of flame and heated air is
conducted by a horizontal flue to a shaft or chimney stack by a damper,
in which flue the draught through the stove may be regulated.
By our Invention fuel is economized, the blast pipes are protected
from injury, and the stove is not so liable to explosions as hot blast stoves
of the ordinary construction.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Jones and Edward Griffin Jones in the
Great Seal Patent Office on the 15th May 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, GEORGE
5 JONES, of Dudley, in the County of Worcester, Iron Master, and EDWARD
GRIFFIN JONES, of Dudley, aforesaid, Iron Master, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twentieth day of November, in the
year of our Lord One thousand eight hundred and seventy-one, in the
thirty-fifth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said George Jones and Edward Griffin
Jones, Her special licence that we, the said George Jones and Edward
Griffin Jones, our executors, administrators, and assigns, or such others
as we, the said George Jones and Edward Griffin Jones, our 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 IMPROVEMENTS IN HOT BLAST STOVES
OR FURNACES USED IN THE MANUFACTURE OF IRON," upon the condition
(amongst others) that we, the said George Jones and Edward Griffin
Jones, our executors or administrators, by an instrument in writing
under our or their hands and seals, or under the hand and seal of one
of us or them, 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.
"
NOW KNOW YE, that I, the said George Jones, on behalf of myself
and the said Edward Griffin Jones, 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 :-
Our Invention relates to the stoves or furnaces employed for heating

page_text: of the improvements herein-after described, in constructing and arranging
the parts of the said stoves or furnaces.
Our Invention is applicable to hot blast stoves or furnaces heated by
the waste heat of the blast furnace, or heated by independent fires.
We arrange the vertical pipes through which the blast passes, and by
which it is heated, either in the form of a circle or other figure, around
one or more vertical hollow columns or flues. The space between the
hollow column or flue and the outer brickwork of the stove constitutes a
vertical, annular, or tubular chamber in which the blast pipes are fixed.
The waste heat from the blast furnace or the heat from the independent
fires ascends into the said annular space or chamber at or near its bottom,
the inner portion of the said space having an arch containing openings,
through which openings the waste heat or fire passes. The object of this
arch is to protect the lower ends of the blast pipes from the too violent
action of the fire. The flame and heated air ascending pass around and
about the blast pipes, that portion of the flame passing through the
arch described striking obliquely against the pipes, and giving a rotatory
or circulating motion to the flame and beated air around the said pipes.
The waste heat or fire passes out of the said annular chamber near its
top on its outer side; it is then conducted by flues over the tops of the
blast pipes, the said flues converging towards and opening into the
central hollow column or flue described. The said column or flue
becomes intensely heated by the descending flame and heated air, and its
heat radiates on to the blast pipes, and contributes largely to the heating
of the blast. The descending current of flame and heated air is conducted
by a horizontal flue to a shaft or chimney stack by a damper, in which
flue the draught through the stove may be regulated.
By our Invention fuel is economized, the blast pipes are protected
from injury, and the stove is not so liable to explosions as hot blast stoves
of the ordinary construction.
Having explained the nature of our Invention, we will proceed to
describe, with reference to the accompanying Drawings, the manner in
which the same is to be performed.
Figure 1 represents a side elevation; Figures 2 and 3, vertical sections;
Figure 4, a plan; and Figures 5 and 6, horizontal sections of a hot blast
stove or furnace, the parts of which are constructed and arranged
according to our Invention. The vertical section, Figure 2, is taken on

page_text: line D, Figure 3. The same letters indicate the same parts in the several
Figures of the Drawing.
The hot blast stove represented is arranged to be heated by the waste
heat from the blast furnace. a is the outer brickwork of the stove, and
b is the hollow vertical column or flue in the axis of the stove. The
space between the said hollow column or flue 6 and the outer brickwork a
constitutes a vertical, annular, or tubular chamber c, in which the
vertical blast pipes d, d, are fixed. The said blast pipes d, d, are arranged
in a circle around the vertical hollow stem or flue b. One-half of the
blast pipes are fed with cold blast by means of the inlet pipe e, and the
other half of the blast pipes by the inlet pipef; g, h, are the outlet pipes
for the heated blast. The said inlet and outlet pipes e, f, g, h, are in
communication with the hollow belt or annular channel i, into which
the bottoms of the blast pipes d, d, open. The vertical blast pipes d, d,
and the belt or channel i, are supported on the internal foundation k, k;
I is the pipe by which the waste heat from the blast furnace is supplied
to the stove for the purpose of heating the same.
This pipe opens into
an annular chamber m near the bottom of the stove, and below the
blast pipes d, d. The said annular chamber m communicates by two
series of passages n, n, p, p, with the annular chamber c, in which the
blast pipes d, d, are situated. The passages n, n, are made in the arch q
situated over the top of the chamber m, the said arch serving to protect
the lower ends of the blast pipes d, d, from the too violent action of the
heat. The series of passages p, p, proceed horizontally through the
foundation k, and open by vertical spaces into the chamber c. The
waste heat supplied by the pipe to the bottom annular chamber m is
conducted by the two series of passages described to the upper annular
chamber c, in which it ascends around and about the blast pipes d, d,
that portion of the heated air passing through the passages or flues n, n,
in the arch q, striking obliquely against the blast pipes d, d, and giving
a rotatory or circulating motion to the said air around the said blast
pipes. The waste heat is conducted from the annular chamber c of the
stove in the following manner :-Over the tops of the blast pipes d, d, is
an arch r, between the sides and top of which arch and the sides a and
top 8 of the stove a series of vertical and horizontal flues is made. The

page_text: vertical flues are marked t, t, and open at bottom by the passages v in
the arch into the chamber c; the horizontal flues are marked u, u.
These flues open at one end into the vertical flues t, t, and converging
to the centre of the stove open into the central hollow column b. By
means of the said flues t, t, and u, u, the waste heat, after it has done its
work in the blast pipe chamber c, passes into the central hollow column
b, down which it descends. The hollow column or flue b is thereby
intensely heated, and its heat is radiated on to the blast pipes d, d, and
contributes largely to the heating of the blast. The descending current
of heated air is conducted from the central flue 6 by a horizontal flue
below the stove to a shaft or chimney stack by a damper, in which
horizontal flue the draught through the stove may be regulated. The
course of the heated air through the stove is indicated by the arrows.
In order to remove soot and dirt from the bottom of the chamber c, and
flues p, p, openings 10, x, are made or left in the outer wall a of the
stove, and openings y¹ are also left at the top and near the top of the
stove for the purpose of removing soot and dirt from the flues t, u.
These openings are closed by fire-brick when the stove is being used for
heating the blast.
When the stove is to be heated by independent fires instead of by the
waste heat from the blast furnace, three or more fire-places are made at
the bottom of the stove, the said fire-places opening into the bottom
annular chamber m, the flame and heated air from the said fire-places
being conducted into the body of the stove in the manner described with
respect to the waste heat conveyed by the pipe 7.
Instead of arranging the vertical blast pipes around a single vertical
hollow column or flue as represented in the Drawing, the said blast pipes
may be arranged around two or more of the said bollow columns or flues,
and the blast pipes may be arranged about the hollow column or columns
in a rectangular or other figure instead of a circular figure.
Having now described the nature of our Invention and the manner
in which the same is to be performed, we wish it to be understood that
we do not limit ourselves to the precise details herein described and
illustrated, as the same may be varied without departing from the nature
of our Invention; but we claim as our Invention the improvements in a
hot blast stoves or furnaces used in the manufacture of iron, herein-
before described and illustrated in the accompanying Drawing, that is
to say, arranging the vertical blast pipes of the stove around one or more

page_text: vertical hollow columns or flues, the said blast pipes being situated in
a tubular chamber formed by the said hollow column or columns and the
outer brickwork of the stove; the waste heat from the blast furnace or
heat from independent fires entering near the bottom of the chamber,
ascending around and about the blast pipes, and passing out at the top
of the chamber into the central hollow column or columns, down which
it descends to the stack or chimney, the several parts of the stove being
constructed and combined substantially in the manner described and
illustrated.
In witness whereof, I, the said George Jones, have hereunto set
my hand and seal, this Thirteenth day of May, in the year of
our Lord One thousand eight hundred and seventy-two.
Witness,
RICHARD SKERRETT,
Clerk to George Shaw,
Birmingham.
GEORGE JONES. (L.S.)