Year: 1896

page_text: Date of Application, 29th Dec., 1896
Complete Specification Left, 29th Sept., 1897-Accepted, 13th Nov., 1897
45 Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
My invention has for its object to provide an upright boiler and a smoke consuming'
furnace therefor which shall be of high efficiency, safe, compact in construction, and
relatively inexpensive.
In the following description reference is made to the accompanying drawings, in
which latter
Fig. 1 is a view in vertical central section of a boiler and furnace embodying my
invention, some of the parts being shown in elevation.
Fig. 2 is a front elevation thereof, one-half in section on line 2-2 of Fig. 1.
Fig. 3 is a plan view thereof with one-half of the top-plate removed.
Figs. 4 5 and 6 show my invention as embodied in a modified form of furnace.
Figs. 7 and 8 show another modification.
For many purposes, as for example, in heating buildings and the like, a relatively
inexpensive, safe and compact boiler furnace which may be either portable, or may
be set in a brick setting or the like, is desired. I have shown my present invention
in the accompanying drawings as embodied in such a boiler furnace.
At A is shown the boiler, which is formed with an upper central' portion shown
more clearly in Fig. 1, it being provided also with water walls or side portions
projecting downwardly below the upper central portion above referred to, around the
combustion chamber 13, which is located beneath said central portion of the boiler,
and also forwardly on opposite sides of the fuel-chambers 11 and 12. The flue-tubes
are shown at 2. They extend preferably between the upper tube-sheet. 3 and the
lower tube-sheet 4. The flue or stack is shown at 5. The shell of the boiler is
shown at 6, it being. protected by an outer shell 7. The parts above mentioned' rest
on a base 8, which, in the case of a portable furnace, preferably, is of cast metal. If
a brick setting were employed the base 8 might be dispensed with. A top plate,
preferably of cast iron is shown at 9, and a front plate at 10. The furnace proper
comprises an upper fuel chamber 11, a lower fuel-chamber 12, and a combustion
chamber 13, and below the furnace, within the base 8, is the ash-pit 14. The grates
employed are tubular water-grates. The upper grate comprises a series of tubular:
grate-bars 15, the rear ends of which enter the front side or shell of the main water.
space of the boiler near the lower edge thereof, as will be clear from Fig. 1. These

page_text: tubular grate-bars preferably are slightly inclined from the rear downwardly to the
front, their forward ends entering the upper portion 16 of a water-box or manifold.
The upper portion of said water-box or manifold is connected with the lower
portion 17 thereof by vertical side connections 18, one of which is shown in Fig. 2,
so that the parts 16, 17 and 18 constitute one manifold or water-box. Below the
upper, grate-bars 15 and substantially parallel therewith, I provide a lower grate
composed of a series of tubular water-grate bars 19, the forward ends of which enter
the lower portion 17 of the water box or manifold. The rear ends of the lower grate
bars 19 are provided with elbows or bent connections 20, by means of which they
are connected with the lower ends of the vertical connections 21. The upper ends
of said vertical connections 21 enter the lower tube-sheet 4 near the front edge
thereof. If the vertical connections 21 were all set in the same transverse plane,
there would not be sufficient space between them to permit the drafts from the upper
and lower grates to pass. To avoid this difficulty, I inake each alternate-lower, grate-
bar somewhat longer than the others, so that the vertical connections 21 are set in
two lines or planes, those in one line or plane being slightly behind those in the
other line. By this arrangement sufficient space is obtained between
the connections 21 to permit the drafts of the upper and lower grates to pass. The
lower portion 17 of the water box or manifold is connected at the ends thereof
directly with the forwardly projenting side water-walls of the boiler as shown. The
water in the boiler is therefore allowed to circulate freely, the movement being from
the lower portions of the forwardly-projecting side water-walls where the water is
coolest, into the manifold or water-box, part of the water passing thence through
the lower grate-bars 19 and vertical connections 21 to the inain water-space of the
boiler. The other part of the water passes through the upper-grate bars 16 to
the main water-space of the boiler. As the vertical connections 21 are subject to the
fiercest heat of the fire, a very rapid circulation is ensured. Instead of the elbows
or bent connections 20, a manifold.or water-box miglit be employed, into which the
lower ends of the lower grate tubes would enter. This manifold would, however,
require to be of sufficient size to accommodate the staggered arrangement of the
vertical connections 21. I prefer to use the bent connections or elbows, since
sediment is less likely to accumulate therein than in a water-box and for other
reasons.
It will be noted that in the form shown in Figs. 1, 2 and 3, there is no crown
sheet having a water-space above. it, and that the main water-space is entirely at
the rear of the main fuel-chamber 11, and thus all danger of explosion resulting from
the water rising in the boiler and suddenly overflowing a hot crown sheet is obviated.
The combustion chamber 13 is immediately beneath the said main water-space
while the water-walls extend around the said combustion chamber and laterally on
opposite sides of both the fuel-chambers 11 and 12. Thus the highest possible
efficiency in heating and steam-producing with a great economy of fuel are secured;
while the emission of smoke is prevented, all the smoke, or practically all, being
consumed.
The aeh-pit door is shown at 30, and the forward portion of the ash-pit floor is
inclined, as shown at 31, to permit the easy withdrawal of the ashes. The door
through which fuel is supplied to the lower grate is shown at 32, and the fuel-door
of the upper grate at 33.
For the purpose of supplying air to the fire in the upper fuel chamber 11, I
provide a circular damper 34, which is provided with a handle 35 extending to
the front of the furnace and by means of which the damper may be opened or
closed. By locating this damper on the top-plate, as shown, the damper in the
fuel-door 33 may be closed and the supply of air which is required may be obtained
through the said damper 34. In this way there is no opening in front of and in
close proximity to the fire and the danger of hot coal getting out of the fuel
chamber 11 accidentally is reduced to a minimum. This is important, especially
in the use of the furnace in private houses. As will be clear, the draft passes
downwardly through the upper grate, and rearwardly between the vertical

page_text: connections 21 to the flue-tubes 2. The draft of the lower grate passes upwardly
therethrough, and rearwardly between the vertical connections 21 to the flue-
tubes 2. To prevent the draft on the lower grate from passing rearwardly below and
behind the said grate, I provide a supporting-piece 10, which extends across the
furnace from side to side thereof, and is rigidly secured in place. The supporting
piece 40 is of the cross-sectional shape shown in Fig. 1, and on the rear horizontal
portion of this supporting piece I place a series of bricks 41, or a mass of other
suitable non-conducting material, which will serve to protect the supporting-piece
from the direct heat of the fire. The bricks form a partition, extending across
the furnace, and filling the space below the elbowa 20 and the lower horizontal
portion of the supporting piece. Directly below the supporting-piece I provide a
damper 42, of sheet iron or the like, which extends from side to side of the furnace,
and also rearwardly from the front of the supporting-piece 40 to the rear wall of the
furnace, that is to the front shell of the rear portion of the downwardly projecting:
water-wall. The damper 42 is arranged to slide forwardly and rearwardly. By
this arrangement, the draft of the lower grate is prevented from passing below and,
behind' the same, and is compelled to pass upwardly through said grate and thence
rearwardly between the vertical connections to the flue-tubes 2. By forming the
damper 42 so that it may be slid forwardly, any accumulation of ashes or the like'
which forms thereon may be easily removed, it being necessary only to draw the
damper 42 forward by means of a poker, when the ashes thereon will be forced'
off and allowed to drop into the ash pit. The arrangement of this boiler is
particularly advantageous for house-heating and the like, in that the pipes which
pass to the various portions of the building may be so connected with the boiler
as to ensure a very perfect circulation therethrough. The ends of the systems
of pipes which would be employed in a building are indicated in the drawings. The
end through which the steam passes out from the boiler (or water, if the system
of heating is one employing hot water) is shown at 45. This it will be observed
is directly above the point at which the hottest water in the boiler is to be found.
The return end of the system of pipes is shown at 46, and this enters the boiler.
directly opposite the point at which the coolest water passes into the manifold or water
box. As the water rushes into the manitold or water box from the water-walls
constantly when the boiler is in use, the circulation being necessarily very rapid,
the movement of the water into the manifold or water box and past the end of the
return pipe 46 serves to draw the water out of the return-pipe, as will be clear, and
thus ensures a comparatively rapid circulation through the system of pipes in the
building.
In the modification shown in Figs. 4, 5, and 6, Fig. 4 is a vertical section, Fig. 5
is a horizontal section on the line 5-5 of Fig. 4, and Fig. 6 is a front elevation,
one-half in section. In this modification the damper 51 which extends across the
furnace froin side to side beneath the partition wall 52 is hinged instead of sliding,
affording better facilities for access to the rear chamber.
In the modification shown in Figs. 7 and 8, Fig. 7 is a top plan, and Fig. 8 is a
front elevation. 61 represents the upright boiler, 62 the top plate of the furnace
and 63 the fuel opening in the top-plate which is kept constantly open, no cover
or door being required. 64 are the tubular grate bars.
In the modifications shown in Figs. 4 and 8, the water walls 54 and. 65
respectively are carried over above the fuel chamber.
Dated this with defi
1009

page_text: Improvements in the Construction of Boilers, and in Smoke
Consuming Furnaces therefor.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents, 45
Southampton Buildings, in the County of Middlesex, 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 has for its object to provide an upright boiler and furnace which shall
be of high efficiency, safe, compact in construction, and relatively inexpensive.
The novel features of my invention are particularly pointed out and clearly defined
in the claims at the end of this specification.
In the following description reference is made to the drawings left with my.
provisional specification, in which latter Fig. 1 is a view in vertical central section of a
boiler and furnace embodying my invention, some of the parts being shown in
elevation.
Fig. 2 is a front elevation thereof, one half in section on line 2-2 of Fig. 1..
Fig. 3 is a plan view thereof with one-half of the top plate removed. Figs. 4 and 5.
show my invention as embodied in a modified form of furnace. Figs. 7 and 8 show
another modification.
For many purposes, as for example, in heating buildings, and the like, a relatively
inexpensive, safe and compact boiler furnace which may be either portable, or inay
be set in a brick setting, or the like is desired. I have shown my present invention.
in the accompanying drawings as embodied in such a boiler furnace.
At A is shown the boiler, which is formed with an upper central portion shown
more clearly in Fig. 1, it being provided also with water walls or side portions
projecting downwardly below the upper central portion above referred to, around the
combustion chamber 13, which is located beneath said central portion of the
boiler, and also forwardly on opposite sides of the fuel chambers 11 and 12. The flue
tubes are shown at 2. They extend preferably between the upper tube-sheet 3 and
the lower tube sheet 4. The flue or stack is shown at 5. The shell of the boiler is
shown at 6, it being protected by an outer shell 7. The parts above mentioned rest
on a base 8, which, in the case of a portable furnace, preferably is of cast metal. If a
brick setting were employed the base 8 might be dispensed with. A top plate,
preferably of cast iron, is shown at 9, and a front plate at 10. The furnace proper
comprises an upper fuel chamber 11, a lower fuel chamber 12, and a combustion
chamber 13, and below the furnace, within the base 8, is the ash-pit 14. The grates]
employed are tubular water grates. The upper grate comprises a series of tubular
grate bars 15, the rear ends of which enter the front side or shell of the main
water-space of the boiler near the lower edge thereof, as will be clear from Fig. 1.
These tubular grate bars preferably are slightly inclined from the rear downwardly
to the front, their forward ends entering the upper portion 16 of a water box or
manifold. The upper portion of said water-box or manifold is connected with the
lower portion 17 thereof by vertical side connections 18, one of which is shown in
Fig. 2, so that the parts 16, 17 and 18 constitute one manifold or water box. Below
the upper grate bars 15 and substantially parallel therewith I provide a lower grate
composed of a series of tubular water grate bars 19, the forward ends of which enter
the lower portion 17 of the water box or manifold. The rear ends of the lower grate
bars 19 are provided with elbows or bent connections 20, by means of which they are
connected with the lower ends of the vertical connections 21. The upper ends of said
vertical connections 21 enter the lower tube-sheet 4 near the front edge thereof. If
the vertical connections 21 were all set in the same transverse plane, there would not

page_text: be sufficient space between them to permit the drafts from the upper and lower grates
to pass. To avoid this difficulty I make each alternato lower grate bar somewhat longer
than the others, so that the vertical connections. 21 are set in two lines or planes,
those in one line or plane being slightly behind those in the other line. By this
arrangement sufficient space is obtained between the connections 21 to permit the
drafts of the upper and lower grates to pass. The lower portion 17 of the water box
or manifold is connected at the ends thereof directly with the forwardly projecting
side water walls of the boiler as shown. The water in the boiler is therefore allowed
to circulate freely, the movement being from the lower portions of the forwardly.
projecting side water-walls where the water is coolest into the manifold or water-box,
part of the water passing thence through the lower grate-bars 19 and vertical
connections 21 to the main water-space of the boiler. The other part of the water
passes through the upper grate bars 15 to the main water-space of the boiler. As the
vertical connections 21 are subject to the fiercest heat of the fire, a very rapid
circulation is ensured. Instead of the elbows or bent connections 20, a manifold or,
water box might be employed, into which the lower ends of the lower grate tubes
would enter. This manifold would, however, require to be of sufficient size to
accommodate the staggered arrangement of the vertical connections 21. I prefer to
use the bent connections or elbows, since sediment is less likely to accumulate therein
than in a water box, and for other reasons.
It will be noted that in the form shown in Figs. 1 2 and 3, there is no crown sheet
having a water-space above it, and that the main water-space is entirely at the rear.
of the main fuol chainber 11, and thus all danger of explosion resulting from the
water rising in the boiler and suddenly overflowing a hot crown sheet is obviated. The
combustion chamber 13 is immediately beneath the said main water-space while
the water walls extend around the said combustion chamber and laterally on opposite
sides of both the fuel chambers 11 and 12. Thus the highest possible efficiency in
heating and steam-producing with a great economy of fuel are secured, while the
emission of smoke is prevented, all the smoke, or practically all, being consumed.
The ash pit door is shown at 30, and the forward portion of the ash-pit floor is
inclined, as shown at 31, to permit the easy withdrawal of the ashes. The door
through which fuel is supplied to the lower grate is shown at 32, and the fuel door of
the upper grate at 33.
For the purpose of supplying air to the fire in the upper fuel chamber 11, I provide
a circular damper 34, which is provided with a handle 35 extending to the front of
the furnace and by means of which the damper may be opened or closed. By
locating this damper on the top-plate, as shown the damper in the fuel door 33 may
be closed and the supply of air which is required may be obtained through the said
damper 34. In-this way there is no opening in front of and in close proximity to the
fire and the danger of hot coal getting out of the fuel chamber 11 accidentally is
reduced to a minimum. This is important, especially in the use of the furance in
private houses. As will be clear, the draft passes downwardly through the upper
grate, and rearwardly between the vertical connections 21 to the flue-tubes 2. The
draft of the lower great passes upwardly therethrough; and rearwardly between the
vertical connections 21 to the flue-tubes 2. To prevent the draft on the lower grate
from passing rearwardly below and behind the said grate, I provide a supporting-
piece 40, which extends across the furnace from side to side thereof, and is rigidly
secured in place. The supporting piece 40 is of the cross-sectional shape shown in
Fig. 1, and on the rear horizontal portion of this supporting piece I place a series of
bricks 41, or a mass of other sititable non-conducting material, which will serve to
protect the supporting-piece from the direct heat of the fire. The bricks forin a
partition, extending across the furnace, and filling the space below the olbows 20
and the lower horizontal portion of the supporting piece. Directly below the
supporting piece I provide a damper 42 of sheet iron or the like, which extends from
side to side of the furnace, and also rearwardly from the front of the supporting
piece 40 to the rear wall of the furnace, that is to the front shell of the rear portion
of the downwardly projecting water wall. The damper 42 is arranged to slide

page_text: forwardly and rearwardly. By this arrangement, the draft of the lower grate is
prevented from passing below and behind the same, and is compelled to pass
upwardly through said grate and thence rearwardly between the vertical connections
to the flue-tubes 2. By forming the damper 42 so that it may be slid forwardly any
accumulation of ashes or the like which forms thereon may be easily removed, it.
being necessary only to draw the damper 42 forward by means of a poker, when the
ashes thereon will be forced off and allowed to drop into the ash-pit. The arrange-
ment of this boiler is particularly advantageous for house heating and the like, in
that the pipes which pass to the various portions of the building may be so
connected with the boiler as to ensure a very perfect circulation therethrough. The
ends of the system of pipes which would be employed in a building are indicated in
the drawings. The end through which the steam passes out from the boiler (or
water, if the system of heating is one employing hot water) is shown at 45. This it
will be observed is directly above the point at which the hottest water in the boiler is
to be found. The return end of the system of pipes is shown at 46, and this enters
the boiler directly opposite the point at which the coolest water passes into the manifold
or water box. As the water rushes into the mainifold or water box from the water
walls constantly when the boiler is in use, the circulation being necessarily very
rapid, the movement of the water into the manifold or water box and past the end of
the return pipe 46 serves to draw the water out of the return pipe, as will be clear,
and thus ensures a comparatively rapid circulation through the system of pipes in the
building.
In the modification shown Figs. 4, 5 and 6,. Fig. 4 is a vertical section, Fig. 5 is a
horizontal section on the line 5-5 of Fig. 4, and Fig. 6 is a front elevation, one half
in section. In this modification the damper 51 which extends across the furnace
from side to side beneath the partition wall 52 is hinged instead of sliding, affording
better facilities for access to the rear chamber.
In the modification shown in Figs. 7, and 8, Fig. 7 is a top plan, and Fig. 8 is a
front elevation. 61 represents the upright boiler, 62 the top plate of the furnace and
63 the fuel opening in the top-plate which is kept constantly open, no cover or door
being required. 64 are the tubular grate bars. In the modifications shown in Figs. 4
and 8 the water walls 54 and 65 respectively are carried over above the fuel chamber.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, as cominunicated to
me by my foreign correspondent, I declare that what I claim is:-
An upright boiler having the main water-space thereof entirely at the rear of the
main fuel chamber, and the combustion chamber beneath the said water space, and
also having vertical water walls extending down around the said combustion chamber
and forward on opposite sides of the fuel chambers, an upper series of water grate
bars entering the front side or shell of the said main water space near the lower edge
of the said front side, a lower series of water grate bars having their rear ends joined
to vertical connections entering the lower tube sheet, and a water box or manifold
having upper and lower portions which are connected with each other and also with
the front ends of the water grate bars of the two series, respectively, the said water
box or manifold also communicating with the water walls, substantially as described
Dated this 29th day of September 1897.
HASELTINE, LAKE & Co.,
15 Southampton Buildings, London, W.C., Agents for the Applicant.