IMPROVEMENTS IN REGENERATIVE GAS FURNACES
Year: 1882

page_text: LETTERS PATENT to William Hackney of 2 Bryn Villas Bryn Road Swansea
in the County of Glamorgan Engineer and John William Wailes of
Wednesbury in the County of Stafford Manager of a Joint Stock Company,
for an Invention of "IMPROVEMENTS IN REGENERATIVE GAS FURNACES."
PROVISIONAL SPECIFICATION left by the said William Hackney and John
William Wailes at the Office of the Commissioners of Patents on the
9th November 1882.
WILLIAM HACKNEY of 3 Bryn Villas Bryn Road, Swansea, in the County of
Glamorgan, Civil Engineer, and JOHN WILLIAM WAILES of Wednesbury in the
"IMPROVEMENTS IN
County of Stafford Manager of a Joint Stock Company
REGENERATIVE GAS FURNACES
"
This Invention relates principally to improvements in that class of regenerative
gas furnaces for which a patent was granted to William Hackney N° 4097, of A.D.
1878, but is also applicable to other forms of gas furnace.
In such furnaces as ordinarily constructed the flues through which air and gas
are led from the regenerator chambers into the combustion or working chamber of
the furnace, and those through which the burned gases are again conducted from
the combustion or working chamber into those regenerator chambers which are
(for the time) being heated, are built in one block of brick work or masonry with
the combustion or working chamber.
According to this Invention the combustion or working chamber is built inde-
pendent of and unconnected with the regenerator chambers which communicate
with it through comparatively light and portable pipes or Blues formed of plate or
sheet iron, cast iron, or other suitable material and lined with some fire resisting
and badly conducting substance.
Among the advantages of this mode of construction are that the furnace is
more cheaply built and more readily and quickly repaired, and in the case of open
bearth steel melting furnaces are rendered more readily applicable to the basic
process of steel making

page_text: The principal difficulty in the way of adapting an open hearth regenerative gas
steel making furnace, as ordinarily constructed, to this basic process, is that the
junction between that part of the furnace which is constructed of basic material
and that built of ordinary or silica fire bricks is rapidly melted away. In a furnace
constructed according to this invention the whole of the melting chamber may be
built of basic bricks, and the basic work may end in the gas and air pipes the lining
of which is so thin that its rapid melting will be prevented by the cooling action
of the external air.
The gas and air pipes may be made and connected to the combustion chamber
and to the regenerators in any convenient way but it is preferred to make them of
light plate or sheet iron, or of cast iron, with their ends lined with fire bricks and
to protect the intermediate portions from heat by a layer of loam, such as that
with which the ladles for holding melted steel aro lined. The loam may be rammed
in round a wooden core which may then be withdrawn. At the ends of the pipes
I make the brick lining project beyond the casing, so that this may not be exposed
to heat, and I make all joints on which sand will lie gas tight or nearly so by means
of dry sand
Leakage is prevented at these joints between the gas pipes and the ends of the
combustion chamber which cannot be made with sand, by ramming in clay between
the ends of the gas pipes and cast-iron flanges fixed-to the wall of the combustion...
chamber:
The air pipes or flues may be either directly behind the gas pipes, or may be set
alternately with them, or arranged in any other convenient manner and either the
air pipes or the gas pipes, or both, may be more or less numerous than the corre-
sponding ports for admitting the gas -and-air into the combustion chamber_of_tho
furnace.
The gas pipes may be held up against the ends of the combustion chamber and
both the gas and air pipes may be kept upright and held together if necessary by
one of tio modo arin--other-convenient way

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed,
by the said Williain Hackney and John William Wailes in the Great Seal
Patent Office on the 9th May 1883.
WILLIAM HACKNEY of 2 Bryn Villas Bryn Road. Swansea in the County of
Glamorgan Engineer and JOHN WILLIAM WAILES of Wednesbury in the County
of Stafford. Manager of a joint stock Company. "IMPROVEMENTS IN REGENERATIVE
GAS FURNACES
"
This invention relates principally to improvements in that class of regenerative
gas furnaces for which a patent was granted to William Hackney N° 4097 of AD
1878 but is also applicable to other forms of regenerative gas furnace.
In such furnaces, as ordinarily constructed, the flues through which air and gas
are led from the regenerator chambers into the combustion or working chamber
of the furnace, and those through which the burned gases are again conducted
from the combustion or working chamber into thoso regenerator chambers which
are (for the time) being heated, are built in one block of brickwork or masonry
with the combustion or working chamber.
According to this invention, the combustion or working chamber is built inde-
pendent of and unconnected with tho regenerator chambers which communicato
with it through comparatively light and portable pipes or flues, formed of plate or
sheet iron, cast iron, or other suitable material, and lined with some firo resisting
and badly conducting substance.
Among the advantages of this mode of construction are that the furnaces aro
more cheaply built and more readily and quickly repaired, and in the case of open-
hearth steel melting furnaces, are rendered more readily applicable to the basic
process of steel making.
The principal difficulty in the way of adapting an open hearth regenerativo gas
steel making furnace, as ordinarily constructed, to this basic process is that the
junction between that part of the furnaco which is constructed of basic material
and that built of ordinary or silica fire bricks is rapidly melted away.
In a furnace constructed according to this invention the whole of the melting
chamber may be built of basic bricks, and the basic work may end in the gas and
air pipes, the lining of which is so thin that its rapid melting will be provented by
the cooling action of the external air.
In order that the nature of the invention may be more clearly understood a
Siemens regenerative gas furnace for open hearth steel melting, designed in
accordance with it is shewn in the accompanying drawing. In this A A are the
air regenerator chambers B. B the air flues from the regenerator chambers to the
combustion or melting chamber of the furnace, and CC the ports or openings
through which the air is introduced into the combustion chambers. DD are the
gas regenerator chambers E. E. the gas flues from the regenerator chambers and
FF the ports or openings through which the gas is introduced into the melting
chamber of the furnace. In other points of construction and in the mode of
working of the furnace, it is similar to the Siemens regenerative open hearth steel
melting furnaces already in use.
The gas and air pipes may be made and connected to the combustion chamber
and to the regenerators in any convenient way, but it is preferred to make them
of light plate or sheet iron as shewn, or of cast iron with their ends lined with firo
bricks, and to protect the intermediate portions from heat by a layer of loam, such
as that with which the ladles for holding melted steel are lined. The loam may be
rammed in round a wooden core which may then be withdrawn.

page_text: At the ends of the pipes we make the brick lining project beyond the casing, so
that this may not be exposed to the heat and we make all joints on which sand
will lie gas tight or nearly so by means of dry sand.
Leakage is prevented at those joints between the gas pipes and the ends of the
combustion chamber which cannot be made with sand, by ramming in clay
between the ends of the gas pipes and cast iron flanges fixed to the wall of the
combustion chamber.
The air pipes or Blues may be either directly behind the gas pipes, or, may be set
alternately with them or arranged in any other convenient manner, and either the
air pipes or the gas pipes, or both may be moro or less numerous than the corre-
sponding ports for admitting the gas and air into the combustion chamber of the
furnace.
The gas pipes may be held up against the ends of the combustion chamber, and
both the gas and air pipes may be kept upright and held together if necessary by
means of tie rods or in any other convenient way
Having thus set forth the nature of our invention and explained the best method
with which we are acquainted in which it may be carried out We wish it to be
understood that what we claim is ;-
Constructing the combustion or working chamber of a regenerative gas furnace
detached from and independent of the regenerator chambers and connecting it to
these by means of comparatively light and portable gas and air pipes as is described
in the above specification and shown in the accompanying drawing.
In Witness Whereof we the said William Hackney and John William Wailes
have hereunto set our hands-and-seals the seventh day of May one thousand
cicht hundred and eighty three