Improvements in Settings for Steam-boilers
Year: 1898

page_text: Date of Application, 26th Sept., 1898-Accepted, 10th Dec., 1898
of America, Manufacturer.]
Diace
LUIK, United States
Improvements in Settings for Steam-boilers."
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buidings, in the County of Middlesex, do hereby declare the
mature 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:-
The invention relates to certain new and useful improvements in steam boiler
settings, and has for its object to provide a compact, stable, economical, and
durable construction, affording a considerable saving in the floor space required,
enabling the brick-work of the fuel chamber to be readily renewed when out of
repair, or replaced by other brick-work adapted to a different fuel, providing for
expansion without injury to the furnace casing, protecting the casing against air
cracks and consequent accidental indraughts of air, rendering the superstructure
independent of the expansion of the brick-work of the fuel chamber, and, .
particularly, permitting a number of furnaces to be arranged as a battery side
by side, in close contact, in such manner as to present a uniform and symmetrical
appearance.
In the accompanying drawings,
Figure 1 represents a front elevation of a steam boiler setting embodying the
invention;
Figure 2 represents a sectional plan view thereof;
Figures 3 and 4 represent, respectively, a side elevation and sectional plan
view of a modification;
Figures 5 and 6 represent respectively a side elevation and sectional plan view
of a further modification;
Figures 7 and 8 represent, respectively a side elevation and sectional plan view.
of a further modification;
Figures 9 and 10 represent respectively a central vertical section and a sectional
plan view of a further modification;
Figures 11 and 12 represent respectively a central vertical section and a
sectional plan view of a still further modification:
Figure 13 represents a plan view of a series of settings of the types shown in
Figs. 3 and 7 arranged close together to form a battery;
Figure 14 represents a plan view of a battery of settings of the types shown in.
Figs. 1 and 5;
Figure 15 represents, partly in section and partly in elevation, one of the arrange-
ments employed for supporting the superstructure;
Figure 16 represents a plan view thereof partly in section;
Figure 17 represents an enlarged section on the line 17-17 of Fig. 16;
Figure 18 represents an enlarged section on the line 18-18 of Fig. 16;

page_text: Figures 19 and 20 represent respectively a sectional elevation and plan view of a
modification of the superstructure supporting devices;
Figures 21 and 22 represent respectively an elevation and cross-section of a
further modification thereof;
Figures 23 and 24 represent sectional elevations of a further modification
thereof;
Figures 25, 26 and 27 represent a side sectional elevation, cross-section, and
vertical sectional elevation of a further modification thereof; and
23
Figures 28, 29 and 30 represent like views of a still further modification
Similar letters of reference indicate similar parts throughout the several views.
Upon referring to the drawings, it will be observed that the settings are illus-
trated as applied to vertical boilers of the water tube type, and particularly
the well-known porcupine boiler, to which they are especially adapted, said
boilers having the vertical main body portion A supported upon its individual
foundation, and extending there from through the deflecting furnace or fuel
chamber B, up into the superstructure C, wherein the gaseous products of com-
bustion ascend through the annular space partially occupied by the water tubes.
The fuel chamber B is called a deflecting furnace for the reason that at its upper
portion it extends inwardly over the fire place and under the lower radiating
tubes of the boiler so as to protect the outer ends of the lower tubes and to cause
the products of combustion to start up centrally and in contact with the vertical
cylinder. I wish it to be understood, however, that I do not limit myself to the
employment of the improvements in connection with this particular boiler, but
contemplate their use wherever they shall be found of utility in the art, regard-
less of the particular type or style of boiler which they enclose.
In boiler settings of the general class wherein a lower fuel chamber or deflect-
ing furnace is employed, together with an upper super-structure for the circula-
tion of the products of combustion, it is sometimes desirable to re-arrange the
brick-work of the lower chamber in order to adapt the furnace to a different kind
of fuel, and it is also necessary at times to reniove and replace the brick-work in
whole or in part when through long continued use it has become out of repair.
This renewal or replacement of the brick-work of the lower furnace is ordinarily
a matter of considerable difficulty and danger, because of the fact that the super-
structure or upper combustion chamber is supported upon the brick-work referred
to, so that the employment of shoring pieces and other temporary supports must
be relied upon to insure the safety of the operation and to protect the workmen
from danger.
One of the characteristic features of the invention consists in supporting the
superstructure independently of the brick-work lining of the fuel chamber, so
that the brick-work may be removed or replaced in whole or in part without
necessitating the employment of auxiliary supporting means for the superstructure
and without imposing any accidental settling strain upon the superstructure
and its own framework. A further advantage of this arrangement is that in the
constructure of the furnace the brick-work of the lower chamber can be so arranged
as to leave room for the expansion incident to its employment, without having such
expansion transmitted to the superstructure.
This leading feature of the invention is capable of embodiment in a variety of
forms, various modifications of which are shown in the accompanying drawings.
In practice, the superstructure may consist (as indicated, for instance, in Figures 5
to 8, 11, 12, 19 and 21) of two concentric walls of brick-work having an inter-
vening space, and secured externally by encircling bands of steel a; or, (as shown.
for instance, in Figures 1 to 4, 9, 10, 15, 23, 25 and 28) of an inner brick wall
and an enclosing casing of steel plates separated, from the inner brick-wall by an
intervening space that may be conveniently occupied by a non-conducting filling
as shown.
In either event, the superstructure is supported by an annular shelf b, which shelf
is in its turn supported independently of the brick-work lining of the lower

page_text: furnace or fuel chamber, and out of contact with said brick lining so that the.
upward expansion of the brick lining shall exercise no lifting strain upon the
shelf.
The support for the shelf upon which the superstructure rests is preferably
derived from a metallic casing of steel plates suitably rivetted together, and either
mainly or entirely from vertical angle bars constituting the strengthening members
of the casing. Thus in the construction shown in Figures 23 and 24, the super-
structure consisting of the steel plate casing D, the courses of brick c and c
together with the interposed lining of non-conducting reverberatory material
rest upon the shelf 6 and are supported mainly by the diagonal bracket member e,.
which is rivetted at its upper end to the shelf and at its lower end to the vertical
upright constituting one of the interior strengthening ribs of the casing E of.
the fuel chamber or deflecting furnace. Auxiliary support is also derived from
an annular rim g, angular in cross-section and rivetted to the casing E and also
to the shelf and a flange of the casing D.
In the construction shown in Figures 25, 26 and 27, the same superstructure is
illustrated as supported upon a shelf to which are rivetted two angle irons e',
said angle irons being in turn rivetted to each other through, the web of a
T-iron bent at its upper end and through the side flange of the strengthening.
web f of the lower casing E; in this instance, to still further strengthen the
structure and produce the necessary stability, metallic cross strips are rivetted.
across and between the members hand f, as shown.
14
In the construction shown in Figures 28, 29 and 30, the same superstructure,
resting upon the shelf b is supported upon angle bars e rivetted to the shelf b.,
and to each other through an intervening plate i, which plate forms a connecting
member between the curved angle bars 2 and the uprights f through the inter-
mediacy of rivets, as shown.
In the preferred construction, hereinafter to be more particularly described,
a superstructure of general circular contour is employed in connection with the
fuel chamber or a deflecting, furnace having a rectangular firing front or two:
rectangular firing fronts. In such instances, the rectangular corners of the
lower casing are separated by a corresponding interval from the wall
of the superstructure. In order to support the superstructure from
said corners, I may, as shown in Figures 15 to 18 employ a vertical angle iron f
at the corner in conjunction with a horizontal bar k rivetted to the vertical angle
bar and to a diagonal angle bar, which diagonal bar is rivetted at one end to the
vertical angle iron f and at the other end to the shelf b. In this instance, also,
I prefer to provide an annular angle bar or ring m rivetted to the shelf and which
is itself in part supported by an horizontal angle bar attached to the casing E,
and in part by a cross-piece n¹ rivetted to the ring m and to the horizontal angle.
bar n.
In the construction shown in Figures 19 and 20 the two brick-work walls of the.
superstructure are supported upon a shelf b, which shelf rests upon a stringer
formed of two I-beams s bolted together and supported at their ends upon pro-
jecting pieces secured to the casing. The support for the compound stringer
described is obtained from a diagonal bar u rivetted to the vertical angle bar /
and to the bases of the I-beams of the stringer, and by a horizontal bar rivetted
at one end to the vertical angle bar f3 and at the other end to the diagonal bar u.
The construction shown in Figures 21 and 22 is. substantially identical with that
shown in Figures 28 to 30, with the exception that instead of the continuous web
shown in the latter figures, a series of cross pieces are employed. The curve.
of the inner angle bars ³ is, however, made more gradual, so as to carry the top
arch of the brick-work of the deflecting furnace further inward, this fuel chamber
being especially appropriate to the burning of bagasse, as is indicated by the
tiles in said figures. As already intimated, the preferred construction embodies.
the feature of providing a setting having in connection with the superstructure

page_text: of general circular contour, a fuel chamber or deflecting furnace directly below it,
and having a square or rectangular firing front or fronts.
Among the prominent advantages of such a combination are that the settings
can be built closely together, in battery form, as indicated in Figures 13 and 14 to
present a composite structure of great symmetry and uniformity; that the grate
surface can be increased in conformity to the larger dimensions of the fuel
chamber, and that, when two firing fronts are provided, the firing can be done
to greater advantage and with more ready facility. It is a further advantage of
the general structure, that the employment of metallic casings for both the
superstructure. and the deflecting furnace permits a correspondingly decreased
thickness of the furnace walls, and thereby not only facilitates the operation of
stoking the furnace and cleaning the tubes, but also enables us to obtain a greater
amount of grate surface for the space occupied by the furnaces.
It will, of course, be understood that the furnace fronts F may be of cast iron,
wrought iron, or steel rivetted to the casing and that they carry the usual stoking
doors, ash pit doors, and other trimmings. The top of the furnace may be provided
with the usual dome G, as indicated.
Between the casing and the brick-work lining of the fuel chamber is provided
an annular space (see, for instance, Figures 9, 11, 18 and 19) which space
provides room for any expansion of the brick-work from the fire outwardly and
thereby protects the casing from injury. I also provide this space w with a
series of inlet openings one or all of which may be closed by plugs w¹, as desired,
80 as to regulate the admission of air from without. The purpose of the air
thus, admitted is to cool the brick-work and also to supply heated air to the fuel
chamber into which it escapes through inlet ports o³, as indicated in Figure 9.
On reference to Figures 15 to 18 it will be noted that the brackets supporting
the superstructure are located in enlarged recesses formed in the brick-work,-
construction having for its object to leave sufficient space for the expansion of
the brick-work without having it exercise any strain upon the bracket members;
in fact, it will be understood, that wherever the brackets are located they will
be contained within enlarged recesses of the brick-work for the purpose described.
-a
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is:
1. A steam boiler setting, provided with a lower or fuel chamber having an
enclosing casing, and having a self-sustaining lining of brick work supported
independently of the casing, and an upper chamber for the circulation of the
products of combustion, said upper chamber being supported independently of
the brick work of the lower chamber and having its walls over the brick lining of
the lower chamber but separated therefrom by an intervening expansion space.
2. A steam boiler setting, provided with a lower or fuel chamber having an
enclosing casing, and having a self-sustaining lining of brick-work supported
independently of the casing, and an upper chamber for the circulation of the
products of combustion, paid upper chamber having inner walls and an outer
envelope or casing enclosing but not supporting said inner walls, said inner walls
being supported from the casing of: the lower chamber independently of the brick
work lining of said lower chamber, and separated therefrom by an intervening
expansion space.
3. A steam boiler setting, provided with a brick-lined lower or fuel chamber, an
upper chamber for the circulation of the products of combustion, said lower chamber
being provided with an enclosing casing, and brackets extending from the said
casing and supporting the upper chamber.
4. A steam boiler setting, provided with a brick lined lower or fuel chamber,
an upper chamber for the circulation of. the products of combustion, said lower
chamber being provided, with an enclosing casing, a shelf upon which the upper

page_text: chamber rests, and brackets extending from said casing and supporting the shelf
and upper chamber.
5. A steam boiler setting, provided with a brick lined lower or fuel chamber,
an upper chamber for the circulation of the products of combustion, said lower
chamber being provided with an enclosing casing, a shelf upon which the upper.
chamber rests, and brackets extending from said casing and supporting the
shelf and upper chamber, said brackets comprising diagonal and horizontal
members and uprights.
6. A steam boiler setting, provided with a brick lined lower or fuel chamber,
an upper chamber for the circulation of the products of combustion, said lower
chamber being provided with an enclosing casing, a shelf upon which the upper
chamber rests, and brackets extending from said casing and supporting the shelf
and upper chamber, said brackets comprising diagonal and horizontal members
and uprights, the diagonal members extending from angles of the casing.
7. A steam boiler setting, provided with a brick-lined lower or fuel chamber,
an upper chamber for the circulation of the products of combustion, said lower
chamber being provided with an enclosing casing, and brackets extending from
the said casing and supporting the upper chamber, said brackets being located
in enlarged recesses of the brick-work, so as to be independent of expansion of the
latter.
8. A steam boiler setting, provided with a brick-lined lower or fuel chamber,
an upper chamber for the circulation of the products of combustion, a shelf upon
which the upper chamber rests and brackets for supporting the shelf independently
of the brick-work of the lower chamber, said brackets comprising diagonal and
horizontal members and uprights, and being located in enlarged recesses of the
brick work, so as to be independent of expansion of the latter.
9. A steam boiler setting, provided with a brick-lined lower or fuel chamber,
provided with an enclosing casing, an upper chamber for the circulation of the
products of combustion, a shelf upon which the upper chamber rests and brackets
for supporting the shelf independently of the brick-work of the lower chamber,
said brackets comprising diagonal and horizontal members and uprights joined to
the enclosing casing of the lower chamber, and being located in enlarged recesses
of the brick work, so as to be independent of expansion of the latter.
10. A steam boiler setting, provided with a brick-lined lower or fuel chamber
said lower chamber being provided with an enclosing casing angular, in cross
section, and an upper chamber for the circulation of the products of combustion,
said upper chamber being of general circular contour, a shelf upon which the
upper chamber rests and diagonal shelf supporting bracket pieces extending
from the angles of the casing of the lower chamber.
11. A steam boiler setting, provided with a brick-lined lower or fuel chamber,
said lower chamber being provided with an enclosing casing angular in cross-
section, and an upper chamber for the circulation of the products of combustion,
said upper chamber being of general circular contour, a shelf upon which the
upper chamber rests and shelf supporting bracket pieces extending from the
angles of the casing of the lower chamber, one of said bracket pieces being
horizontal and one being diagonal, the said bracket pieces being located in
enlarged recesses of the brick work, so as to be independent of expansion of the
latter.
12. A steam boiler setting, provided with a brick-lined lower or fuel chamber,
said lower chamber being provided with an enclosing casing angular in cross
section and an upper chamber for the circulation of the products of combustion
said chamber being of general circular contour, a shelf upon which the upper
chamber rests, diagonal shelf supporting bracket-pieces extending from the angles
of the casing of the lower chamber, and an auxiliary shelf-supporting stringer or
girder member, spanning the angles of the casing, said shelves, supporting
bracket pieces and stringer being located in enlarged recesses of the brick-work
so as to be independent of expansion of the latter,

page_text: 13. A steam boiler setting, having a superstructure of substantially cylindrical
contour, for the circulation of the products of combustion, and a subjacent
deflecting furnace having a substantially rectangular grate surface and
having an enclosing casing and an independently supported brick
lining, the superstructure being supported from the said enclosing casing
independently of the said brick lining, and the deflecting furnace having a
rectangular front.
14. A steam boiler setting, having a superstructure of substantially cylindrical
contour, for the circulation of the products of combustion, and a subjacent
deflecting furnace having a substantially rectangular grate surface and having
an enclosing casing and an independently supported brick lining, the super-
structure being supported from the said enclosing casing independently of the said
brick lining, and the deflecting furnace having a rectangular front and front
and rear firing doors.
Dated this 26th day of September 1898
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents. for the Applicant.