IMPROVEMENTS IN APPARATUS
Year: 1863

page_text: LETTERS PATENT to William Henry Gauntlett, of the South Bank
Iron Works, Middlesbro'-on-Tees, in the North Riding of the County of
York, Engineer, for the Invention of "IMPROVEMENTS IN APPARATUS FOR
Sealed the 14th July 1863, and dated the 23rd February 1863.
PROVISIONAL SPECIFICATION left by the said William Henry Gauntlet
at the Office of the Commissioners of Patents, with his Petition, on
the 23rd February 1863.
I, WILLIAM HENRY GAUNTLETT, of the South Bank Iron Works, Middlesbro'-
on-Tees, in the North Riding of the County of York, Engineer, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN APPARATUS
FOR HEATING THE BLAST IN THE MANUFACTURE OF IRON," to be as follows:-
This Invention has for its object the more effectually heating the blast in
pipes before passing into the blast furnace in the smelting of iron ores, and is
applicable either with the ordinary fuel or with the waste gases generated in
the furnace.
I construct a double stove with internal pipes having a division wall
separating it longitudinally into two single and distinct stoves, each having a
separate fire-grate or combustion chamber. There is an aperture in the
division wall which is opened or closed by any convenient means. I make the
heating pipes with portions of their substance to project from the internal
surface, or the internal surface may be corrugated, or I put stays across the

page_text: interior of the pipes from side to side. These projections, stays, or corrugated
surfaces will have the effect of splitting up or disturbing the blast and pre-
venting it from passing through the pipes in a body, and will consequently
cause the heat to be more intimately conveyed to the air which it is intended
to heat, and the stays will also tend to preserve the shape of the pipes when
heated. I prefer to place a pair of these stoves opposite each tuyere house of
the furnace so as to deliver the blast direct or nearly so to the tuyeres, the
two outlet pipes from a pair of stoves having previously been allowed to
converge into one pipe by preference outside of such pair of stoves.
The manner in which I prefer to work these stoves when burning ordinary
fuel is as follows:-The two single stoves are fired alternately before one is
fired, its flue is closed by means of a damper, and the passage through the
division wall into the adjoining stove, which was previously shut, is opened; the
smoke and gases arising from the firing will now pass through this opening
into the adjoining stove, and meeting with a hot clear fire or flame and atmo-
spheric air will be consumed. When no more smoke is evolved the damper in
the division wall is closed, when more fuel is required this process is reversed,
the other stove being then fired, its flue being previously closed, and the
passage in the division again opened, the smoke and gases will then pass over
into the former stove, and meeting with a hot clear fire or flame will be
consumed in like manner as before described.
By this arrangement and mode of firing the whole of the smoke may be
consumed, and great economy in the consumption of fuel be effected. When
the gases are used for heating the blast they may be conveyed to the com-
bustion chambers of the stoves in any convenient manner, and the two stoves
may be worked either concurrently or alternately.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Henry Gauntlett in the Great Seal Patent Office
on the 21st August 1863..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM 3
HENRY GAUNTLETT, of the South Bank Iron Works, Middlesbro'-on-Tees, in
the North Riding of the County of York, Engineer, send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of February, in the year of our
Lord One thousand eight hundred and sixty-three, in the twenty-sixth year of 3
Her reign, did, for. Ierself, Her heirs and successors, give and grant unto

page_text: me, the said William Henry Gauntlett, Her special licence that I, the said
William Henry Gauntlett, my executors, administrators, and assigns, or
such others as I, the said William Henry Gauntlett, my executors, adminis-
trators, 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 APPARATUS FOR HEATING THE
BLAST IN THE MANUFACTURE OF IRON," upon the condition (amongst others)
that I, the said William Henry Gauntlett, 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.
..
NOW KNOW YE, that I, the said William Henry Gauntlett, 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 :-
This Invention has for its object the more effectually heating the blast in
pipes before passing into the blast furnace in the smelting of iron ores, and is
applicable either with the ordinary fuel or with the waste gases generated in
the furnace.
I construct a double stove with internal pipes having a division wall
separating it into two single and distinct stoves, each having a separate fire-
grate or combustion chamber. There is an aperture in the division wall
which is opened or closed by any convenient means. I make the heating
pipes with portions of their substance to project from the internal surface, or
the internal surface may be corrugated; I also put studs across the interior of
the pipes from side to side. These projections, studs, or corrugated surfaces
will have the effect of splitting up or disturbing the blast, and preventing it
from passing through the pipes in a body, and will consequently cause the heat
to be more intimately conveyed to the air which it is intended to heat. I
prefer to place a pair of these stoves opposite each tuyere house of the furnace
so as to deliver the blast direct or nearly so to the tuyeres, the two outlet
pipes from a pair of stoves having previously been allowed to converge into
one pipe by preference outside such pair of stoves.
The manner in which I prefer to work these stoves when burning ordinary
fuel is as follows:-The two single stoves are fired alternately. Before one

page_text: is fired its flue is closed by means of a damper, and the passage through the
division wall into the adjoining stove, which was previously shut, is opened.
The smoke and gases arising from the firing will now pass through this opening
into the adjoining stove, and meeting with a hot clear fire, or flame and atmo-
spheric air, will be consumed; when no more smoke is evolved the damper in
the division wall is closed; when more fuel is required this process is reversed,
the other stove being then fired, its flue being previously closed and the passage
in the division wall again opened, the smoke and gases will then pass over into
the former stove, and meeting with a hot clear fire or flame will be consumed
in like manner as before described.
By this arrangement and mode of firing the whole of the smoke may be
consumed and great economy in the consumption of fuel effected. When
the gases are used for heating the blast they may be conveyed to the com-
bustion chambers of the stoves in any convenient manner and the two stoves
may be worked concurrently or alternately..
In witness whereof, I, the said William Henry Gauntlett, have hereunto
set my hand and seal, this Twentieth day of August, in the year of
our Lord One thousand eight hundred and sixty-three.
WILLIAM HENRY GAUNTLETT. (L.S.)