IMPROVEMENTS IN THE ARRANGEMENT OF THE AIR AND WASTE GAS PASSAGES IN CONNECTION WITH REGENERATOR FURNACES
Year: 1884

page_text: DE BUIFICATION,
I, CHARLES HUNT of Birmingham, in the County of Warwick, Civil Engineer,
do hereby declare the nature of my said Invention for "IMPROVEMENTS IN THE
ARRANGEMENT OF THE AIR AND WASTE GAS PASSAGES IN CONNECTION WITH
REGENERATOR FURNACES," to be as follows:-
This Invention has for its object, the arrangement of the air and waste gas
passages of regenerator furnaces so as to abstract the heat of the waste gases, and
impart it to the air necessary for the secondary combustion, in the most economical
and efficient manner, and this is effected by the use of perforated or hollow bricks
arranged as hereinafter described
The bricks are rectangular, but not confined to any particular size-Some are
made about twenty two and a half inches long by thirteen and a half inches wide,
by five inches thick, each having three longitudinal perforations, or hollows, about
three inches square-Others are made about twenty two and a half inches long by
nine inches wide, by five inches thick, each having two hollows about three inches
square, while some others are also made twenty two and a half inches long by four
and a half inches wide by five inches thick, but with only one hollow extending
through its length.
The Invention consists in constructing regenerators according to several
modifications-Firstly-In this arrangement the last described brick, or that
having but one hollow, but preferably about eighteen inches long, is used, a
number being placed on each side of the generator and underneath the furnace
along its entire length, side by side with intervening spaces. The bricks are also
built up in tiers one above the other, the lengthway of the brick being ranged
longitudinally with the direction of the retorts, each overlapping the other so as to
leave spaces between.-The hot waste gases enter the regenerator from the top,
pass through alternate spaces between the bricks by which the spaces are
connected and impart to the bricks (and consequently to the air within them)
much of their heat and finally make their exit by a main flue near the bottom to
the chimney shaft.-The air is admitted either from the front or back, near the
Price 1 071

page_text: bottom of the regenerator, and passes upwards through the space formed by the
side walls of the gas-flues, and connected to the hollow bricks, such spaces being
intermediate with the gas flues; it is thus heated by the descending waste gases,
and escapes through nostrils into the furnace, where it meets the gases produced in
the generator and induces vivid combustion.
Secondly The bricks first described, or those having three hollows or tubes are
used in preference, although others may be employed-They are laid in flat
longitudinal tiers and are placed upon blocks at each side, with their hollows or
tubes transversely to the length of the retorts. Between each end of each brick
there is a space or channel left between it and the side walls of the regenerator, so
that on each side there is one continuous longitudinal channel to each tier or tiers
of bricks, with which it has communication, the air passing from one channel to the
other through the tubes or hollows in the bricks, and eventually into the furnace.
The waste gases in this case, flow downwards, forwards, and backwards through
the spaces between the tiers, or courses of bricks imparting heat to the said
bricks as they flow to the outlet. In this case, however, the heated air may enter
either at the front and back, or at the front or back half only of the furnace, the
heat in the latter case ascending at the back or front half, and descending the front
or back half of the setting.
Thirdly―The bricks are of the same kind as those mentioned in the previous
paragraph or they may be single bricks. Spaces or continuous longitudinal
channels are formed on each side of the bricks, but in this case the bricks are
ranged in vertical columns with the hollows or tubes placed transversely as in the
previous modifications. The air passes through the bricks and enters the furnace
as in the first case, while the waste gases descend vertically through the spaces
between the bricks..
Fourthly The bricks used are the same as are mentioned in the two previous
paragraphs In this modification a continuous longitudinal channel is formed both
at the top and bottom of the regenerator, and between these channels the bricks
are set in columns, so that the tubes or hollows extend vertically from the lower to
the upper channel. A space exists between each column, so that the waste gases
may descend vertically and impart their heat to the ascending columns of air
within the bricks or tubes.
Fifthly The first described bricks are employed. They are laid in flat courses
with supporting blocks, and a space between each course, the hollows or tubes of
the bricks ranging longitudinally and communicating with those above and below
by a channel or space formed at each end of the course. The air enters the
hollows or tubes of the bricks at the lower part of the regenerator, flows
backwards, upwards, forwards, and so on throughout the courses, and finally
enters the furnace, while the waste gases pass from above forwards, backwards, and
downwards through the spaces between the bricks..
Sixthly The first described bricks are used. In this case the bricks are set
with their hollows placed transversely and at each of their ends there is a space
formed with tiles between them and the walls of the regenerator, and there is
also a space above and below each brick. In this arrangement the air ascends
through central spaces between the bricks and the tiles, while the hot gases
descend through the side channels and through the hollows of the bricks connecting
them. Air flues extending from back to front are thus formed, while the gas flues
also extend longitudinally.
Seventhly The first second or third described bricks may be used. In this
arrangement there is a single vertical wall of hollow bricks, the hollows placed
longitudinally and communicating with each other by channels at each end. This
central wall is flanked on each side by spaces divided at intervals by tiles placed
horizontally so as to form continuous zigzag passages. The air ascends through
the hollows in the bricks, and the gases descend through the passages on each side.

page_text: Although certain bricks are referred to in each of the before mentioned
modifications or arrangements, it is to be understood that any other form of brick
herein described may be substituted for the one particularly alluded to.
These regenerators are adapted for use with a generator designed by me and
placed in advance of and outside the furnace, the generator being fed with fuel
from the top, and the gases evolved in the said generator, being conveyed to the
furnace by a longitudinal flue extending from front to back of the setting, and
having nostrils or openings therein communicating with the furnace.

page_text: I, CHARLES HUNT of Birmingham in the County of Warwick, Civil Engineer do
hereby declare the nature of my said Invention for "IMPROVEMENTS IN THE
ARRANGEMENT OF THE AIR AND WASTE GAS PASSAGES IN CONNECTION WITH
REGENERATOR FURNACES" and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement,
reference being had to the accompanying Drawings and to the letters and Figures
marked thereon :-
This Invention has for its object the arrangement of the air and waste gas
passages of regenerator furnaces so as to abstract the heat of the waste gases and
impart it to the air necessary for the secondary combustion, in the most economical
and efficient manner, and this is effected by the use of perforated or hollow bricks
arranged as hereinafter described.
In order that the description of the Invention may be more easily understood
Drawings are attached hereto, similar letters referring to the same parts in each of
the Figures.
The bricks are rectangular, as shewn in Figs. 1, 2 and 3, but not confined to any
particular size. Some are made about twenty two and a half inches long by
thirteen and a half inches wide, by five inches thick, each having three longitudinal
perforations or hollows about three inches square, others are made about twenty
two and a half inches long by nine inches wide, by five inches thick, each having
two hollows about three inches square, while some others are also made twenty two
and a half inches long, by four and a half inches wide, by five inches thick, but
with only one hollow extending through the length of each brick.
The Invention consists in constructing regenerators according to several
modifications. Firstly. In the arrangement shewn in Fig. 4 the last described brick,
or that having but one hollow, but preferably about eighteen inches long is used,
a number being placed on each side of the generator and underneath the furnace
along its entire length, side by side with intervening spaces. The bricks are also
built up in tiers one above the other, the lengthway of the brick being ranged
longitudinally with the direction of the retorts, each overlapping the other so as to
leave spaces between. The hot waste gases enter the regenerator from the top,
pass through alterate spaces G between the bricks by which the spaces are
connected and impart to the bricks (and consequently to the air within them)
much of their heat, and finally make their exit by a main flue near the bottom to
the chimney shaft. The air is admitted either from the front or back near the
bottom of the regenerator and passes upwards through the space formed by the
side walls of the gas flues, and connected to the hollow bricks A, such spaces being
intermediate with the gas flues, it is thus heated by the descending waste gases,
and escapes through nostrils into the furnace, where it meets the gases produced in
the generator and induces vivid combustion. Fig. 5 is a longitudinal vertical
section of the arrangement through I. J. Fig. 4 in which G. G. represent the spaces
through which the gases flow, and A. A those through which the air passes, the
arrows pointing downwards indicating the direction of the gases, while the arrows
pointing upwards mark the direction of the air.-Fig. 6 is a horizontal section
through P. Q. Fig. 4, and shews the line of the retort setting at W.
Secondly. The arrangement shewn in Fig. 7 is one in which the bricks first
described, or those having three hollows or tubes are used in preference, although
others may be employed. They are laid in flat longitudinal tiers and are placed

page_text: upon blocks at each side, with their hollows or tubes transversely to the length of
the retorts. Between each end of each brick there is a space or channel left
between it and the side walls of the regenerator, so that on each side there is one
continuous longitudinal channel to each tier or tiers of bricks, with which it has
communication, the air passing in the direction of the arrows from one channel to
the other through the tubes or hollows A in the bricks, and eventually into the
furnace. The waste gases in this case flow in the direction of the arrows shewn in
the longitudinal section elevation Fig. 8, downwards, forwards and backwards
through the spaces between the tiers or courses of bricks, imparting heat to the
said bricks as they flow to the outlet. In this case however the heated air may
enter either at the front and back, or at the front or back half only of the furnace,
the heat in the latter case ascending at the back or front half, and descending the
front or back half of the setting as shewn on the Drawing Figs. 8 & 17-In the
event of the air entering the regenerator at both front and back, it will be necessary
to construct a partition wall across the regenerator corresponding with the centre
of the retort bed. Openings for the purpose of allowing communication from one
series of channels to the other must then be formed on each side of the wall just
mentioned. Fig. 9 exhibits a sectional plan through P. Q. Fig. 7.
Thirdly. Referring to Fig. 10 which is a transverse sectional elevation of the
regenerator, the bricks are of the same kind as those mentioned in the previous
paragraph, or they may be single bricks. Spaces or continuous longitudinal
channels A are formed on each side of the bricks, but in this case the bricks are
ranged in vertical columns with the hollows or tubes placed transversely as in the
previous modifications. The air passes in the direction of the arrows through the
bricks and enters the furnace as in the first case, while the waste gases descend
vertically through the spaces between the bricks, as shewn in Fig. 11 which is a
longitudinal section through K L Fig. 10.-Fig. 12 is a section through P, Q,
Fig. 10.
Fourthly. In Fig. 13 the bricks used are the same as are mentioned in the two
previous paragraphs. In this modification a continuous longitudinal channel M is
formed both at the top and bottom of the regenerator, and between these channels
the bricks are set in columns so that the tubes or hollows A extend vertically from
the lower to the upper channel. A space N exists between each column as seen in
Fig. 14, so that the waste gases may descend vertically as shewn by the arrows and
impart their heat to the ascending columns of air within the bricks or tubes.
Fig. 15 is a sectional plan through P. Q. Fig. 13.
Fifthly. In the arrangement as shewn in Fig. 16 the first described bricks are
employed. They are laid in flat courses, with supporting blocks O, and a space
between each course, the hollows or tubes of the bricks ranging longitudinally and
communicating with those above and below by a channel or space formed at each
end of the course. The air enters the hollows or tubes of the bricks at the lower
part of the regenerator, flows backwards, upwards, forwards and so on throughout
the courses, and finally enters the furnace, while the waste gases pass from above
forwards, backwards and downwards through the spaces between the bricks.
5 Fig. 18 is a sectional plan of Fig. 16.
Sixthly. In the section shewn as Fig. 19 the first described bricks are used. In
this case the bricks are set with their hollows placed transversely and at each of
their ends there is a space formed with tiles between them and the walls of the
regenerator, and there is also a space above and below each brick. In this
arrangement the air ascends through central spaces between the bricks and the
tiles, while the hot gases descend through the side channels and through the hollows
of the bricks connecting them. Air flues extending from front to back are thus
formed, while the gas Hues also extend longitudinally.
Seventhly. In the arrangement marked Fig. 20, the first, second, or third
described bricks may be used. In this arrangement there is a single vertical wall
of hollow bricks, the hollows placed longitudinally and communicating with each
other by channels at each end. This central wall is flanked on each side by spaces
.

page_text: divided at intervals by tiles placed horizontally so as to form continuous zig-zag
passages. The air ascends through the hollows in the bricks, and the gases descend
through the passages on each side.
.
Although certain bricks are referred to in each of the before mentioned
modifications or arrangements, it is to be understood that any other form of brick
herein described may be substituted for the one particularly alluded to.
These regenerators are adapted for use with generators designed by me and
placed in advance of and outside the furnaces, as shewn in Fig. 21, the generator
being fed with fuel from the top, and the gases evolved in the said generator, being
conveyed to the furnace by a longitudinal flue extending from front to back of
the setting, and having nostrils or openings therein communicating with the
furnace.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
Improvements in building and in the arrangement of the air and waste gas
passages in connection with regenerator furnaces as herein described and shewn on
the Drawings.

page_text: I, CHARLES HUNT of Birmingham, in the County of Warwick, Civil Engineer,
do hereby declare the nature of my said Invention for "IMPROVEMENTS IN THE
ARRANGEMENT OF THE AIR AND WASTE GAS PASSAGES IN CONNECTION WITH
REGENERATOR FURNACES," to be as follows:-
This Invention has for its object, the arrangement of the air and waste gas
passages of regenerator furnaces so as to abstract the heat of the waste gases, and
impart it to the air necessary for the secondary combustion, in the most economical
and efficient manner, and this is effected by the use of perforated or hollow bricks
arranged as hereinafter described.
The bricks are rectangular, but not confined to any particular size-Some are
made about twenty two and a half inches long by thirteen and a half inches wide,
by five inches thick, each having three longitudinal perforations, or hollows, about
three inches square-Others are made about twenty two and a half inches long by
nine inches wide, by five inches thick, each having two hollows about three inches
square, while some others are also made twenty two and a half inches long by four
and a half inches wide by five inches thick, but with only one bollow extending
through its length.
The Invention consists in constructing regenerators according to several
modifications-Firstly-In this arrangement the last described brick, or that
having but one hollow, but preferably about eighteen inches long, is used, a
number being placed on each side of the generator and underneath the furnace
along its entire length, side by side with intervening spaces. The bricks are also
built up in tiers one above the other, the lengthway of the brick being ranged
longitudinally with the direction of the retorts, each overlapping the other so as to
leave spaces between-The hot waste gases enter the regenerator from the top,
pass through alternate spaces between the bricks by which the spaces are
connected and impart to the bricks (and consequently to the air within them)
much of their heat and finally make their exit by a main flue near the bottom to
the chimney shaft.-The air is admitted either from the front or back, near the

page_text: bottom of the regenerator, and passes upwards through the space formed by the
side walls of the gas-flues, and connected to the hollow bricks, such spaces being
intermediate with the gas flues; it is thus heated by the descending waste gases,
and escapes through nostrils into the furnace, where it meets the gases produced in
the generator and induces vivid combustion.
Secondly The bricks first described, or those having three hollows or tubes are
used in preference, although others may be employed-They are laid in flat
longitudinal tiers and are placed upon blocks at each side, with their hollows or
tubes transversely to the length of the retorts. Between each end of each brick
there is a space or channel left between it and the side walls of the regenerator, so
that on each side there is one continuous longitudinal channel to each tier or tiers
of bricks, with which it has communication, the air passing from one channel to the
other through the tubes or hollows in the bricks, and eventually into the furnace.
The waste gases in this case, flow downwards, forwards, and backwards through
the spaces between the tiers, or courses of bricks imparting heat to the said
bricks as they flow to the outlet. In this case, however, the heated air may enter
either at the front and back, or at the front or back half only of the furnace, the
heat in the latter case ascending at the back or front half, and descending the front
or back half of the setting.
Thirdly The bricks are of the same kind as those mentioned in the previous
paragraph or they may be single bricks. Spaces or continuous longitudinal
channels are formed on each side of the bricks, but in this case the bricks are
ranged in vertical columns with the hollows or tubes placed transversely as in the
previous modifications. The air passes through the bricks and enters the furnace
as in the first case, while the waste, gases descend vertically through the spaces
between the bricks..
Fourthly-The bricks used are the same as are mentioned in the two previous
paragraphs In this modification a continuous longitudinal channel is formed both
at the top and bottom of the regenerator, and between these channels the bricks
are set in columns, so that the tubes or hollows extend vertically from the lower to
the upper channel. A space exists between each column, so that the waste gases
may descend vertically and impart their heat to the ascending columns of air
within the bricks or tubes.
Fifthly The first described bricks are employed. They are laid in flat courses
with supporting blocks, and a space between each course, the hollows or tubes of
the bricks ranging longitudinally and communicating with those above and below
by a channel or space formed at each end of the course. The air enters the
hollows or tubes of the bricks at the lower part of the regenerator, flows
back wards, upwards, forwards, and so on throughout the courses, and finally
enters the furnace, while the waste gases pass from above forwards, backwards, and
downwards through the spaces between the bricks.
Sixthly-The first described bricks are used. In this case the bricks are set
with their hollows placed transversely and at each of their ends there is a space
formed with tiles between them and the walls of the regenerator, and there is
also a space above and below each brick. In this arrangement the air ascends
through central spaces between the bricks and the tiles, while the hot gases
descend through the side channels and through the hollows of the bricks connecting
them. Air flues extending from back to front are thus formed, while the gas flues
also extend longitudinally.
Seventhly The first second or third described bricks may be used. In this
arrangement there is a single vertical wall of hollow bricks, the hollows placed
longitudinally and communicating with each other by channels at each end. This
central wall is flanked on each side by spaces divided at intervals by tiles placed
horizontally so as to form continuous zigzag passages. The air ascends through
the hollows in the bricks, and the gases descend through the passages on each side.

page_text: Although certain bricks are referred to in each of the before mentioned
modifications or arrangements, it is to be understood that any other form of brick
herein described may be substituted for the one particularly alluded to.
These regenerators are adapted for use with a generator designed by me and
placed in advance of and outside the furnace, the generator being fed with fuel
from the top, and the gases evolved in the said generator, being conveyed to the
furnace by a longitudinal flue extending from front to back of the setting, and
having nostrils or openings therein communicating with the furnace.

page_text: I, CHARLES HUNT of Birmingham in the County of Warwick, Civil Engineer do
hereby declare the nature of my said Invention for "IMPROVEMENTS IN THE
ARRANGEMENT OF THE AIR AND WASTE GAS PASSAGES IN CONNECTION WITH
REGENERATOR FURNACES" and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement,
reference being had to the accompanying Drawings and to the letters and Figures
marked thereon :-
This Invention has for its object the arrangement of the air and waste gas
passages of regenerator furnaces so as to abstract the heat of the waste gases and
impart it to the air necessary for the secondary combustion, in the most economical
and efficient manner, and this is effected by the use of perforated or hollow bricks
arranged as hereinafter described.
In order that the description of the Invention may be more easily understood
Drawings are attached hereto, similar letters referring to the same parts in each of
the Figures.
The bricks are rectangular, as shewn in Figs. 1, 2 and 3, but not confined to any
particular size. Some are made about twenty two and a half inches long by
thirteen and a half inches wide, by five inches thick, each having three longitudinal
perforations or hollows about three inches square, others are made about twenty
two and a half inches long by nine inches wide, by five inches thick, each having
two hollows about three inches square, while some others are also made twenty two
and a half inches long, by four and a half inches wide, by five inches thick, but
with only one hollow extending through the length of each brick.
The Invention consists in constructing regenerators according to several
modifications. Firstly. In the arrangement shewn in Fig. 4 the last described brick,
or that having but one hollow, but preferably about eighteen inches long is used,
a number being placed on each side of the generator and underneath the furnace
along its entire length, side by side with intervening spaces. The bricks are also
built up in tiers one above the other, the lengthway of the brick being ranged
longitudinally with the direction of the retorts, each overlapping the other so as to
leave spaces between. The hot waste gases enter the regenerator from the top,
pass through alterate spaces G between the bricks by which the spaces are
connected and impart to the bricks (and consequently to the air within them)
much of their beat, and finally make their exit by a main flue near the bottom to
the chimney shaft. The air is admitted either from the front or back near the
bottom of the regenerator and passes upwards through the space formed by the
side walls of the gas flues, and connected to the hollow bricks A, such spaces being
intermediate with the gas flues, it is thus heated by the desconding waste gases,
and escapes through nostrils into the furnace, where it meets the gases produced in
the generator and induces vivid combustion. Fig. 5 is a longitudinal vertical
section of the arrangement through I. J. Fig. 4 in which G. G. represent the spaces
through which the gases flow, and A. A those through which the air passes, the
arrows pointing downwards indicating the direction of the gases, while the arrows
pointing upwards mark the direction of the air.-Fig. 6 is a horizontal section
through P. Q. Fig. 4, and shews the line of the retort setting at W.
Secondly. The arrangement shewn in Fig. 7 is one in which the bricks first
described, or those having three hollows or tubes are used in preference, although
others may be employed.-They are laid in flat longitudinal tiers and are placed

page_text: upon blocks at each side, with their hollows or tubes transversely to the length of
the retorts. Between each end of each brick there is a space or channel left
between it and the side walls of the regenerator, so that on each side there is one
continuous longitudinal channel to each tier or tiers of bricks, with which it has
communication, the air passing in the direction of the arrows from one channel to
the other through the tubes or hollows A in the bricks, and eventually into the
furnace. The waste gases in this case flow in the direction of the arrows shewn in
the longitudinal section elevation Fig. 8, downwards, forwards and backwards
through the spaces between the tiers or courses of bricks, imparting heat to the
said bricks as they flow to the outlet. In this case however the heated air may
enter either at the front and back, or at the front or back half only of the furnace,
the heat in the latter case ascending at the back or front half, and descending the
front or back half of the setting as shewn on the Drawing Figs. 8 & 17-In the
event of the air entering the regenerator at both front and back, it will be necessary
to construct a partition wall across the regenerator corresponding with the centre
of the retort bed. Openings for the purpose of allowing communication from one
series of channels to the other must then be formed on each side of the wall just
mentioned. Fig. 9 exhibits a sectional plan through P. Q. Fig. 7.
Thirdly. Referring to Fig. 10 which is a transverse sectional elevation of the
regenerator, the bricks are of the same kind as those mentioned in the previous
paragraph, or they may be single bricks. Spaces or continuous longitudinal
channels A are formned on each side of the bricks, but in this case the bricks are
ranged in vertical columns with the hollows or tubes placed transversely as in the
previous modifications. The air passes in the direction of the arrows through the
bricks and enters the furnace as in the first case, while the waste gases descend
vertically through the spaces between the bricks, as shewn in Fig. 11 which is a
Jongitudinal section through K L Fig. 10.-Fig. 12 is a section through P, Q,
Fig. 10.
Fourthly. In Fig. 13 the bricks used are the same as are mentioned in the two
previous paragraphs. In this modification a continuous longitudinal channel M is
formed both at the top and bottom of the regenerator, and between these channels
the bricks are set in columns so that the tubes or hollows A extend vertically from
the lower to the upper channel. A space N exists between each column as seen in
Fig. 14, so that the waste gases may descend vertically as shewn by the arrows and
impart their heat to the ascending columns of air within the bricks or tubes.
Fig. 15 is a sectional plan through P. Q. Fig. 13.
Fifthly. In the arrangement as shewn in Fig. 16 the first described bricks are
employed. They are laid in flat courses, with supporting blocks O, and a space
between each course, the hollows or tubes of the bricks ranging longitudinally and
communicating with those above and below by a channel or space formed at each
end of the course. The air enters the hollows or tubes of the bricks at the lower
part of the regenerator, flows backwards, upwards, forwards and so on throughout
the courses, and finally enters the furnace, while the waste gases pass from above
forwards, backwards and downwards through the spaces between the bricks.
Fig. 18 is a sectional plan of Fig. 16.
Sixthly. In the section shewn as Fig. 19 the first described bricks are used. In
this case the bricks are set with their hollows placed transversely and at each of
their ends there is a space formed with tiles between them and the walls of the
regenerator, and there is also a space above and below each brick. In this
arrangement the air ascends through central spaces between the bricks and the
tiles, while the hot gases descend through the side channels and through the hollows
of the bricks connecting them. Air flues extending from front to back are thus
formed, while the gas flues also extend longitudinally.
Seventhly. In the arrangement marked Fig. 20, the first, second, or third
described bricks may be used. In this arrangement there is a single vertical wall
of hollow bricks, the hollows placed longitudinally and communicating with each
other by channels at each end. This central wall is flanked on each side by spaces

page_text: divided at intervals by tiles placed horizontally so as to form continuous zig-zag
passages. The air ascends through the hollows in the bricks, and the gases descend
through the passages on each side.
Although certain bricks are referred to in each of the before mentioned
modifications or arrangements, it is to be understood that any other form of brick
herein described may be substituted for the one particularly alluded to.
These regenerators are adapted for use with generators designed by me and
placed in advance of and outside the furnaces, as shewn in Fig. 21, the generator
being fed with fuel from the top, and the gases evolved in the said generator, being
conveyed to the furnace by a longitudinal flue extending from front to back of
the setting, and having nostrils or openings therein communicating with the
furnace.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
Improvements in building and in the arrangement of the air and waste gas
passages in connection with regenerator furnaces as herein described and shewn on
the Drawings.