Improvements in and Connected with Steam Boiler and other Heating, Melting, and Smelting Furnaces, Muffles, and the like, for Various Purposes.
Year: 1887

page_text: Date of Application, 26th May, 1887.
Complete Left, 27th Feb., 1888
Complete Accepted, 11th May, 1888
Improvements in and Connected with Steam Boiler and other
Heating, Melting, and Smelting Furnaces, Muffles, and the like,
for Various Purposes.
I, HENRY WALKER of Saint Mary's Row Birmingham in the County of Warwick,
Combustion Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to certain improvements on the well known divisioned, and
perforated slabs, bricks or segmental blocks, employed for promoting combustion in
steam boiler and other heating furnaces, and patented by the present applicant, on
the 20th day of February 1885 and numbered 2318.
My improvements relate 1st, to an improved construction of furnace, or parts of a
furnace, principally for steam boiler purposes. 2ndly, in an improved construction
of the slabs, bricks or segmental blocks, employed in the said furnaces, for promoting
and attaining efficient and complete combustion of the smoke and products of
combustion, given off or evolved from a fire-place or fire-places; 3rdly, in a new or
improved slab or slabs (preferably made up of segments) for locomotive, traction
engine, or marine boiler furnaces. 4thly, in segmental blocks, slabs or the like, for
metallurgical or other heating or reducing furnaces. 5thly, in an improved means
for automatically and regularly closing the dampers of steam boiler and other furnaces,
as herein-before referred to, after the introduction of fuel to a fire-place.
The construction and arrangement of the steam boiler furnace, and the perforated
hollow divisional blocks or slabs used therewith, is as follows
"
At a short distance from the back of the bridge, and resting upon a supplementary
plate or plates, supported upon the bottom of an internal flue, or an internal space,
within a Cornish or other boiler, is a regenerater arch, whose segmental blocks or
slabs have divisioned internal passages passing upwardly through their middles, and
with underside holes or piercings leading from the said passages.
The bases of the said blocks or slabs, are open at their bottoms, and are in
communication with a hot-air channel or flue leading from a divisioned or semi-
divided off bridge, which comes just in front of the regenerater arch before named.

page_text: I
This bridge is made in the form of an upright tunnel or passage, thicker at the front
than at the back part, and having a vertical division plate coming within a short
distance from the inside top of the said bridge.
The front division of the bridge is open to the ash-pit, or underside of the fire-
place, while holes or perforations are made through the back wall, to within a short
distance from the plate upon which it rests, to the crown thereof.
The bridge is made up of a series of open ended blocks, placed end to end, to the
extent of the breadth of a fire-place.
By constructing hollow bridges, in connection with regenerater arches as described,
complete combustion is thereby attained, in consequence of the air thus supplied, being
highly heated, before it is made to converge or be projected and intermingled with
the products of combustion passing fiercely over the bridge. Thus, the air
to be supplied, passes from the ash-pit, and is from thence conducted up the front
inside part of the divided arch, then over the metallic division plate, down the back
side, into the air-flue or passage leading to the base of the arch, then upwardly
conducted through the division passages of the arch, and lastly directed outwardly
through the underside piercings or reticulations, to the products having passed the
bridge.
The heated air as well as passing to the regenerater arch, also passes out through
the piercings in the back wall of the bridge as before described.
The partitions instead of being made separate, may be made with the blocks
themselves.
The improved segmental and division blocks, when applied to marine boilers, are
constructed as follows-
Proceeding upwards from the dead-plate of the furnace, hollow and divisioned
pillar blocks, or continuous hollow division blocks are situated; and starting from
the tops of these base or pillar blocks, arch segments are arranged, springing from
the top or tops of the said base blocks, to the fronts of the tube plates, to a little
below the multitubular system; and which said springing arch pieces have outwardly
closed ends, and opposite side piercings or perforations.
These springing arch segments are arranged at suitable distances apart, at the lower
end of the combustion chamber, and partly over the fire in the fire-grate, and between
which said springing arch pieces, the products of combustion of the fire passes, in
getting to the multitubular system.
The junctions of the tops of the bases with the arch pieces are mitred and shaped,
so that a good joint may be thereby produced.
The springing arch pieces may be arranged in double order; that is, they may be
made to spring from the two outsides of a middle hollow buttress.
The segments are preferably arranged, with a cruciform shaped division through
their middles, thus making four passages, with their outer opposite sides pierced with
holes or reticulations, through which pure heated air for supplying combustion
(taken from the ash-pit) passes.
In applying my improved regenerative and combustion slabs for locomotive or
traction engines,.I proceed as follows-
I make the slab preferably in transverse, and bow shaped segments, connected
together by dovetails or otherwise.
The slab when made up, resembles somewhat the form of a grating, with transverse
bars and gapped parts; and it is through the gapped parts of the said grating form of
combustion slab, that the products of combustion evolved from the fire-grate, passes,
in getting to the multitubular system of the boiler.
The transverse bar like portions of the slab are pierced on their upper and
undersides, with holes or reticulations, through which heated air for promoting
combustion, passes.
The slab is cellular liko in construction, and rests upon pillars or feet at two
opposite sides, which have shafts through them, leading from the underside of the
fire-grate or otherwise, and which said slab when in position, is disposed obliquely,
sloping from back to front of the fire-place over the fire.

page_text: In applying my improvements to heating furnaces, for the melting or reducing of
metals, I proceed as follows-
To construct a circular furnace, I make the parts in semi-circular segments,
preferably four in number, with vertical up and down passages; which from the
latter, horizontal holes or outlets proceed, to the hollow inside of the furnace; that is,
the segments when combined together, form the outer wall of the furnace, whose
inside is scolloped, or undulated, so as to prevent the combustible matters contained
therein, from choking up the series of holes or outlets leading from the down
passages. The undulatory inside of the furnace also has the property of radiating
inwardly their heat taken up from the burning fuel. These holes are arranged in
a series, one above another, and through them, hot air is supplied, which has been
compelled to take a circuitous course, through the honey-combings of the segments.
Communication between the up and down passages is made, by only allowing
the partitions or divisions to come within a short distance of the top of the segment
or block.
My improved appliance for regulating the closing of the dampers consists as
follows-
°
Situated in front of the furnace, is an axis or shaft, mounted within suitable
bracket bearings, so as to be capable of a partial rotation; and mounted or carried by
the said axis, is a short arm, against which the furnace door comes, on being opened;
and carried also upon the said. axis, is a short lever, to which a rod which works the
damper plate, is connected; so that the opening of the door (when the damper is
closed, for re-coaling) presses the arm forward, rotates the axis, and fully opens the
damper, which is allowed to gradually close, by an automatic hydraulic expedient, as
herein-after described. Or the said arrangement may be made to open the damper,
instead of close it.
This expedient consists of an outer and an inner vessel, and within the former,
water is first placed, which is partially transferred therefrom, into the inner vessel, on
the same being lowered, below the water level in the outer one.
After the inner vessol has been filled, it then rises, so as to make its water level a
little higher than that of the outer one, and which height is maintained by the said
inner vessel being pressed upwardly by a balance weight, which counterpoises the
said inner vessel; by which means, the liquid contained therein, is allowed to slowly
pass therefrom into that of the outer one. This inner vessel is connected with a
central rod or axis, which passes through a pillar or tube which is connected with the
outer vessel, and which said rod is provided at or about its middle with an adjustment
expedient, consisting either of screw nuts, or an inclined plane, upon the top edge of
the latter of which, the lower end of the adjusting rod which carries the valve
connection, comes.
The inner vessel is perforated at its bottom with holes, which are closed by a valve,
operated by the valve connections. Thus, when the damper is required to be timed,
the rod connected with the valve connections is adjusted accordingly, by the opening
and closing of the valvo orifices more or less, thereby allowing only a determinate
quantity of water to pass from the inner to the outer vessel in a given time.
The balance or counterpoise weight is preferably placed upon an arm in connection
with the axis which works the damper rod.
Or the counterpoising of the charge inner vessel may be effected, or its position
changed, by a coiled or other spring.
Dated this Twenty-fourth day of May 1887.

page_text: COMPLETE SPECIFICATION.
Improvements in and Connected with Steam Boiler and other
Heating, Melting, and Smelting Furnaces, Muffles, and the like,
for Various Purposes.
1, HENRY WALKER of Saint Mary's Row, Birmingham, in the County of Warwick,
Combustion Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :—
My invention relates to certain improvements on the well known divisioned, and
perforated slabs, bricks or segmental blocks, employed for promoting combustion in
steam boiler, and other heating furnaces, and patented by the present applicant, on the
20th day of the February 1885 and numbered 2318.
My improvements relate 1st to the construction of steam boiler furnaces, or parts of
steam boiler furnaces, in which chambered blocks or slabs are employed. 2ndly in
an improved construction of the slabs, bricks or segmental blocks, for promoting and
attaining efficient and complete combustion of the smoke, and products of combustion,
given off, or evolved from a furnace fire place, or fire places, 3rdly, in the construction
of slabs, (preferably made up of segments) for locomotive, traction engine, or marine
boiler furnaces. 4thly in segmental blocks, slabs or the like, for metallurgical, or other
heating, or reducing furnaces.
In carrying out this invention, 1 proceed as follows.
At a short distance from the back of the bridge, and resting upon a supplementary
plate or plates, supported upon the bottom of an internal flue, or an enclosed space
(within a Cornish or other boiler), is a regenerator arch, whose segmental blocks
or slabs, have divisional and upwardly directed passages, through their middles, and
with side holes directed outwardly from the rear of the said passages.
The bases of the said blocks or slabs, are open at their bottoms, and are in com-
munication with a hot air channel or flue leading from a divisioned or semi-divided off
bridge, which comes just in front of the regenerator arch before named. This bridge
is made in the form of an upright tunnel or passage, thicker at the front than at the
back part, and having a vertical division plate, coming within a short distance from the
inside top of the said bridge.
The front division of the bridge, is open to the ashpit, or underside of the
fire place, while holes or perforations are made through the back wall, to within a
short distance from the plate, upon which it rests, to the crown thereof.
The bridge is made up of a series of open ended or closed ended blocks, placed end to
end, to the extent of the breadth of a fire place.
By constructing hollow bridges, in connection with regenerator arches as described,
complete combustion is thereby attained, in consequence of the air thus supplied, being
highly heated, before it is made to converge, or be projected and intermingled with the
products of combustion, passing fiercely over the bridge. Thus, the air to be supplied,

page_text: passes from the ashpit, and is from thence conducted up the front inside part of the
divided arch, then over the metallic division plate, down the back side, into the air flue.
or passage, leading to the base of the arch, then upwardly conducted through the
division passages of the arch, and lastly, directed outwardly, through the underside.
piercings, or reticulations, to the products of combustion, having passed the bridge.
The heated air, as well as passing to the regenerator arch, also passes out through
the piercings in the back wall of the bridge as before described.
The partitions, instead of being made separate, may be made with the blocks.
themselves.
The improved segmental, and division blocks, when applied to marine boilers, are
constructed as follows.
Proceeding upwards from the dead plate of the furnace, hollow and cross partitioned
pillar blocks, are situated; and starting from the tops of these base or pillar blocks,
arch segments are arranged, springing from the top or tops of the said base blocks, to
near the fronts of the tube plates, a little below the multitubular system; and which
said springing arch pieces, have outwardly closed ends, and opposite side piercings or
perforations.
These springing arch segments, are arranged at suitable distances apart, at the lower
end of the combustion chamber, and partly over the fire in the fire grate, and between
which said springing arch pieces, the products of combustion, of the fire, passes, in
getting to the multitubular system.
The junctions of the tops of the tops of the bases with the arch pieces, are mitred off,
while the said springing arch pieces may be arranged in double order; that is, they
may be made to spring, from the two outsides of a middle hollow buttress.
The segments are preferably arranged, with a cruciform shaped division through.
their middles, thus making four passages, with their outer opposite sides, pierced with
holes or reticulations, through which, newly conducted heated air for supplying
combustion, (taken from the ash-pit) passes.
In applying my improved regenerative and combustion slabs, for locomotive or traction
engines, I proceed as follows.
I make the slab preferably in transverse, and bow shaped segments, connected
together by dovetails or otherwise.
The slab when made up, resembles somewhat the form of a grating, with transverse
bars and gapped parts; and it is through the gapped parts of the said grating form of
combustion slab, that the products of combustion evolved from the fire grate, passes, in
getting to the multitubular system of the boiler.
The transverse bar like portions of the slab, are pierced on their upper and under-
sides, with holes or reticulations, through which, heated air for promoting combustion,
passes.
The slab is cellular like in construction, and rests upon pillars or feet at two opposite
sides, which have shafts through them, leading from the underside of the fire grate or
otherwise, and which said slab when in position, is disposed obliquely, sloping from
back to front of the fire place over the fire.
In applying my improvements to heating furnaces, for the melting or reducing of
metals, I proceed as follows.
To construct a circular furnace, I make the parts in semi-circular segments, preferably
four in number, with vertical up and down passages; while from the latter, horizontal.
holes or outlets proceed, to the hollow inside of the furnace; that is, the segments
when combined together, form the outer wall of the furnace, whose inside is scolloped
or undulated, so as to prevent the combustible matters contained therein, from choking
up the series of holes or outlets leading from the down passages. The undulatory
inside of the furnace also has the property of radiating inwardly, their heat taken up
from the burning fuel. The holes are arranged in a series, one above another, and
through them, hot air is supplied, which has been compelled to take a circuitous course,
through the honey-combings of the segments.
Communication between the up and down passages is made, by only allowing the
partitions or divisions to come within a short distance of the top of the segment or block..

page_text: I will now proceed to describe with reference to the accompanying drawings, the
manner in which the same is to be performed.
Figure 1 represents in longitudinal vertical section, and partly in elevation, a
"Cornish" boiler, provided with improvements, and burner blocks or slabs, made
according to one form of this invention.
a is the boiler, b is the fire-place, c are the fire bars, d is the bridge, and d² is the
back thereof, resting upon a supplementary plate e, forming the top to an internal
flue f, which leads to the underside of a regenerator arch burner g, which is fully
described, and claimed in my former Letters Patent, herein before cited.
The bridge d, is preferably built up of segmental blocks, open at their bottoms,
through which, heated air, from a hot air chamber or flue, passes. Thus, the bridge d,
which is hollow, has a divisional plate d³, up its middle, with its upper end extending
to near the inside crown of the said bridge, and with the back d², pierced with
outwardly directed holes d, wherethrough the heated air, passing from a heating
chamber, passes, and mingles with the products of combustion, as the same passes
under the regenerator arch burner. Thus, the hollow of the arch is divided off into
chambers, which makes upward and downward passages, through which the heated
air is conducted, both outwardly through the holes d', in front of the regenerator arch,
and to the internal flue f, and from thence to the inside of the regenerator arch,
through its open or pierced bottom.
The air thus made to circulate through the passages as aforesaid, becomes highly
heated, and on being mixed with the unconsumed products of combustion given off
from the fire place, the whole bursts into a blaze.
h is the ash-pit, under the fire bars, and from whence the air, which circuitiously
passes through the passages aforesaid, is derived.
In the said figure 1, the bridge is built up of ordinary blocks, and with the inlet
opening to the chamber, which leads to its internal passages, regulated by a damper
plate.
Figure 2 represents another form of my invention, in which the bridge is made up
of a series of open ended, and cross division blocks or slabs, which are placed end to
end, of the breadth of a fire place.
Figure 3 is a transverse vertical section of one of the cross division blocks. Figure 4
is a back elevation, showing the outwardly directed piercings, wherethrough heated air
outwardly passes, after circulating through the divided off passages of the hollow
blocks.
Figure 5 is an underside view of figure-4, showing the cross internal partitioning;
that is, the inside or hollow of the block or slab, is divided off longitudinally and
transversely, into up and down passages.
a is the boiler, b is the fire-place, c the fire bars, d is the bridge, made up of a series
of blocks or segments, placed end to end, but of the entire breadth of the bridge, e, e³,
the supporting plates, the internal flue, and g the regenerator arch burner.
.
Each bridge burner block as represented in figures 3, 4 and 5, consists of an outer
wall d¹, an inner wall, with outwardly directed piercings d, open bottom d³, up and
down passages do, d', longitudinal internal divisional walls d³, whose tops come within
a short distance of the crown or inside top of the hollow of the said block, and trans-
verse divisional walls d³, which make with the other partitions as aforesaid, the upward
and downward passages or chambers do, d'. dare sunken parts wherein the top edge
of the plate do lies.
Figure 6 represents a perspective view of a boiler provided with improvements made
according to another form of my invention.
a is a Cornish" boiler, the fire place, c the fire bars, and d is the bridge, with
open bottomed burner blocks d², consisting of hollow and internally partitioned off
blocks, as represented in figures 3, 4 and 5, but with piercings d', at both the rear and
top sides, instead of only at the rear side as aforesaid.
The bridge burner blocks d, d' are supported upon bearer plate e, carried by the
regenerator arch burner supporting plate e². g is the regenerator arch burner, built
up of arched segments, as aforesaid:

page_text: The plate e², and regenerator arch g, is supported at its rear end upon a plate e³,
whilst coming under the middle longitudinal partition of the bridge burner blocks d is
a secondary plate e. The space enclosed between the two inside faces of the
plates es, e, is an air chamber 2; and between the inside of the face of the plate e¹,
and the lower part of the back of the bridge wall d, is a secondary air chamber or
space, into which air upwardly passes to the hollow structural inside part of the
bridge burner d². Thus, air is admitted to space f, through an aperture, or through
apertures in the lower part of the bridge wall, just below the bars; and which supply
of air, is regulated by a damper shutter.
In supplying air, for effecting the combustion of the unconsumed products given off
from the fire place, air passes from the ash pit h, through apertures in the bridge wall,
to the air space or chamber f; the air then ascends up and through the front
partitions of the burner block d, then over the top of the divisional walls, both through
the top and back piercings d*, and desending down the rear passages, into the
chamber, from whence the said air is conducted to the regenerator arch burner,
whose bases are open to the said chamber. The passage and direction of the air, is
indicated by the arrows.
By combining and arranging the parts as represented in the said figure 6, efficient
and perfect combustion of the unconsumed products given off from the fire-place is
thereby attained.
Figure 7 represents another form of my invention, in which the regenerator arch
burner, is dispensed with, and an internally chambered pillar burner substituted
therefor. This pillar burner is shown placed in front of a Galloway" water
circulating tube.
«
The pillar consists of a rectangular shaped block i, of the same construction as
figures 3, 4 and 5, but with the lower end open, and the upper end closed, with the
opposite sides pierced, and with the front chamfered off.
Figure 8 represents my invention applied to the furnace of an egg ended boiler, of
which figure 9, is a transverse vertical section.
a is the boiler, b the fire-place, c the fire-bars, and h the ash-pit. i is a pillar
burner, whose open underside rests upon a plate e, between the underside of which,
and the wall e2, bottom e³, and partition plate e, an air chamber is made. e is the
primary air chamber, into which, air first passes from the ash-pit h, through the
damper passage j. Thus, air is conveyed as indicated by the arrows, from the ash-
pit, through damper passage j, to primary air chamber e, thence through the hollow
of the bridge block, through the outwardly directed piercings therein, and also into
the chamber e, and from thence into the pillar burner.
Figure 10 represents my improvements applied to the fire-place of a locomotive.
Figure 11 represents an end elevation of my new or improved slab, for the fire-
places of the said engines upon an enlarged scale. Figure 12 shows a side elevation
of the slab, whose lower end is supported at two opposite points, upon supplementary
dead plates.
Figure 13 represents a front elevation of the said slab, showing the grating like
openings therethrough, and with the piercings directed outwardly into the said
openings.
Figure 14 represents the segments composing the top of the said slab.
Figure 15 represents a transverse vertical section of the fire box of a locomotive
steam engine, provided with my new or improved burner slab.
b
a is a multitubular boiler, 6 is the fire-place, and c is the fire-bars.
d is the burner slab, composed of a series of hollow cross partitioned blocks 1ª, 1b,
1, 1, 18, 1, 1. The segments 1° and 1°, have closed tops, which are perforated with
holes 2, while their lower undersides are open, and form upward passages 3.
The middle blocks 1° 1° and 1 have horizontal passages 3 best seen in the dotted
lines figure 15; and top and bottom piercings 2ª leading from the said passages 3b.
The outside blocks 1ª, 1, 18 and 1', have upright passages 3*, like those above them,
and also top and bottom piercings 2ª, leading into the transverse passages 3b; as it

page_text: will be seen in figures 13 and 15, that the whole of the passages 3* and 3b, in the
segments when put together become coincident, form continuous air flues, for carrying
heated air through the slab, and from thence through the outwardly directed
piercings 2, and which said inner piercings, are directed into gaps or grating parts 3°.
These slabs which are disposed in an oblique direction, as represented in figure 10,
rest upon hollow pillars d², whose bases are supported upon supplementary dead plates
at the inside of the furnace next to the tube plate. The hollows of the said pillars
coincide with the vertical passages 3* of the blocks, and upwardly through which,
heated air from the ash-pit, or from an air chamber, passes.
.
The slabs are supported in their slanting forward positions by snugs d³.
Thus, air for promoting combustion, of the unconsumed products given off from
the fire-place, passes through the ash-pit, up the hollow of the pillars, from thence
into the air flues 3º, and along the horizontal passages 3b, which having now become
highly heated, passes through the piercings 2, and then intermingles with the products
of combustion, when the whole bursts into flame.
In consequence of the air being so highly heated in its circuitous passage through
the air flues less air is required in promoting perfect combustion.
Figure 16 represents a marine boiler furnace, provided with improvements made
according to another form of my invention.
Figure 17 represents a side elevation of one of the springing arch burners.
Figure 18 is a cross section on the dotted lines A B figure 17.
Figure 19 is an underside plan, and it will be seen from the end, which is chamfered,
that the inside is partitioned off into four compartments.
Figure 20 is a vertical section upon the dotted lines CD figure 19. Figure 21 is
a plan, showing a series of the said springing arched burners, arranged side by side,
with intermediate spaces between them.
Figure 22 represents a transverse vertical section of a marine boiler, provided with
twin springing arched burners, directed from a central hollow buttress, provided with
upright flues, directed from air chambers beneath.
The junctions of the springing arched burners, with the mitred top of the buttress,
are made by sinking recesses in the tops of the said buttresses, wherein the adjacent
open ends of the springing arches, lie, thereby preventing the displacement of the
parts, by the rolling of a ship.
a is the multitubular system, b is the fire place, c are the fire bars, d is a springing
arch burner, with the opposite sides, pierced with holes d², and with the inside part d³,
V shaped, as best seen in the section figure 18.
The inside of the springing arch burner, has passages d', directed through it, but
with the upper or inner end sealed, whilst the outer or lower end de is mitred, and
rests within a sunken part at the summit of the fluid pillar d', whose lower end d³,
is open to the ash-pit.
In figure 22, the flues of the pillar, which are marked d°, are opened into air
chambers do, with partition plates d", dividing each of them off into two
chambers dos, into which latter, air passes from the ash-pit h, through the throttled
valve passage h².
d is a cross partitioned-off bridge, as fully described. Thus air from the ash-pit,
enters the primary air chamber ds, up and down the air passages of the bridge d',
into the secondary air chamber do, and from thence, upwards into the springing arch
burners d, and through the piercings d' of the said burners, mingling with the products
of combustion as aforesaid.
It will be understood that the bridges have piercings both at top and rear sides, as
before described; and further, the said bridges may be dispensed with, and the
air to be heated and supplied as aforesaid, directed from an ash-pit, or air
chamber.
⚫Figure 23 represents a transverse vertical section of a metallurgical furnace, con-
structed and arranged according to my invention.
Figure 24 is a vertical section. Figure 25 shows one of the segments composing

page_text: the said furnace, while figure 26 is an inside view of the said segment showing its
inside ribbed or structural character. Figure 27 is a horizontal section of one of
the segments, while figure 28 is a section upon the dotted lines E F figure 25.
a are segments, which when joined together form a complete furnace, with an inside
space corrugated, and marked a. b, 61, are vertical passages with partitions 6' between
them. is the up passage, while b is the down passage; and communication between
the up and down passage, is made by a top passage 63, when the furnace is covered by
a slab, or other cover. The down passages b, have inwardly directed passages b³,
wherethrough air which is highly heated, passes to the interior of the furnace.
Thus, air passes up the passage 6', through, or over the sunken part 6³, into the
downward passage b, and thence conveyed to the middle of the furnace, through the
horizontal passages or piercings b₁.
The fuel employed may be coal, coke or gaseous substances.
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 -
First: In a steam boiler furnace-a hollow bridge, or a hollow built bridge, with
a middle partition plate, directed vertically up its middle, and with its top edge
coming within a short distance of the inside top, or crown part. The walls of the said
bridge, are provided with, outwardly directed holes, or piercings, through the rear,
or both through rear and crown or top, substantially as described and set forth in
figure 1 of the drawings.
Secondly-The combination with a bridge constructed as in the preceding claim
of an arch regenerator burner, disposed at its rear or back part, substantially as, and
for the purpose as herein described and set forth, whereby the unconsumed products
of combustion are consumed and the heat both regenerated and radiated.
Thirdly: In a cross partitioned hollow block or slab, with the longitudinal parti-
tions coming within a short distance of the inside top, or crown part of the said block,
thus forming as it were, a bridge, over which the heated air is made to pass internally
first upwardly and then downwardly; and which said blocks, have closed or open
ends, and rear piercings, or rear and top piercings, as set forth in figures 2, 3, 4 and 5
of the drawings.
Fourthly: The combination with the regenerator arch burner g, and a regenerator
bridge burner d, of a flue or air chamber f, and the auxiliary parts employed in
connection therewith, substantially as described and set forth in figure 2 of the
drawings.
Fifthly The construction, and arrangement of the parts of the air chambers and
flues, and the auxiliary parts in connection with a regenerator arch burner g, and
bridge d, substantially as described and set forth in figure 6.
Sixthly The divisional diaphragm or plate e, in connection with the hollow
burner bridge d and arch burner g, which are constructed, and arranged, with respect
to the air chambers, substantially as described and set forth.
Seventhly-In combination with a partitioned-off hollow burner bridge d, of a
pillar regenerator burner i, as set forth in figure 7.
Eighthly The combination with a bridge burner d, and pillar burner i, of air
chambers e, e, with the divisional plates and air entrances and outlets, substantially
as described, and set forth in figures 8 and 9 of the drawings.
Ninthly:A smoke consumer, and radiating regenerator burner slab d; (for
locomotive, and other fire places and furnaces) and which is made grating like, pierced
and constructed and arranged, substantially as described and set forth in figures 10,
11, 12, 13, 14 and 15 of the drawings.
:-
Tenthly A radiating regenerator burner slab d, in connection, or in combination
with supporting pillars, and snugs d', as set forth in figures 10, 11, 12, 13, 14 and 15
of the drawings.
Eleventhly The combination with the fire place of a locomotive engine, of a
:-

page_text: forwardly inclined smoke consumer, radiator and regenerator slab, as set forth in 10,
12 and 15 of the drawings.
Twelfthly In a marine steam boiler furnace-The smoke consuming springing
arched burner d, constructed and arranged, substantially as described and set forth
in figures 16, 17, 18, 19, 20, 21 and 22 of the drawings.
Thirteenthly Arranging spring arched burners for double boilers, and fire grates,
as represented in figure 22 of the drawings.
Fourteenthly-Combining with springing arched burners d, of hollow buttresses d'
having upwardly directed air passages through them, and whose lower open
ends, are open to air chambers situated thereunder, as set forth in figure 22 of the
drawings.
Fifteenthly-The combination with a marine boiler furnace, of springing arched
burners, with air chambers, or springing arched burners with bridge burners, and
air chambers; and which said parts are constructed and arranged, and the air
heated and conducted, substantially as described and set forth in figure 22 of the
drawings.
Sixteenthly: In a metallurgical furnace-Vertically fluting or corrugating the
inside surface of the said furnaces, for effecting radiation of heat, and preventing
the attachment of clinkers and the like to the inlet air passages, substantially as
described and set forth in figures 23 to 28.
Lastly-The general segmental construction and arrangement of the parts of the
said furnace; also the arrangement and direction of the air passages, as set forth
and specified in figures 23 to 28 both inclusive of the accompanying drawings.
Dated this Twenty fourth day of February 1888.

page_text: 11
F16. 24.
a

page_text: FIG. 26.