An Improved Setting for Lancashire Steam Boilers.
Year: 1890

page_text: Date of Application, 11th Dec., 1840
Complete Specification Left, 16th Jan., 1891-Accepted, 24th Jan., 1891
PROVISIONAL SPECIFICATION.
An Improved Setting for Lancashire Steam Boilers.
FOUNTAIN LIVET, of 67 Finsbury Pavement, London, E.C., in the County of
Middlesex, England, Civil Engineer, do hereby declare the nature of this invention to
be as follows:-
My improvements consist in the disposition of two separate and continuous flues of
successive expanding sectional area, through brickwork setting, in continuation of
those of the boiler proper, with a grit chamber at the turning of each flue; the
special damper for each separate flue and specially designed iron stools for supporting
the boiler, and back metal plates over the flue exits.
Having described the nature of my improvements, the following will more clearly
show how a Lancashire steam boilor is to be erected upon this improved method
The special stools are placed upon a solid base, of a sufficient number for the size
of boiler to be set, they have fitted upon their top parts a series of supports as
chipping pieces cast upon them, longitudinally to the boiler and of the same radius
at their tops as that of the boiler.
The brickwork setting proceeds by building a longitudinal wall between the
stools commencing from the front wall of the setting, and finishing at the other end,
in the collecting flue if several steam boilers are upon the same shaft. This division
wall is closed at top by a coping so as to avoid as much as possible brick surface
touching the boiler shell for preventing corrosion of the plates; then two side walls
are built longitudinally to the boiler (one on each side of the division wall)
commencing at about two feet from the front wall of the setting and finishing at the
dampers, the tops of these two walls are, like the former one, finishing by brick coping
against the shell of boiler to separate the side flues from the lower flues.
At the back of boiler, the two lower flues are covered by an horizontal metal plate
attached to end of boiler and covered with brickwork, which separates the side flues
from the lower flues.
The exits of the flue tubes of the boiler are also separated from each other by a
metal plate, so as to lead separately the currents of gases into the side flues of the
setting.
At the exit of the flue tubes of the boiler and at their junction with the side flues
is a grit or expansion chamber, the pits of which finish below the inverted arches of
the side flues. The two side flues commence from this grit chamber and extend
towards the front of boiler, stopping at a distance of about two feet from the
termination of the side walls of the lower flues, so that at the junction of the side
flues with the lower flues a second grit chamber is formed.
The tops of both grit chambers and side flues are closed against the boiler shell
below the water line.
The principle of the two separate flues from the boiler, independent of their special
construction and form is of successive expanding sectional area for every
course when changing their direction, for reducing the velocity of the gases and
maintaining the regularity of the introduction of air through the furnace grate.
The two dampers are on the pivotting principle actuated by levers and rods from
an handle at the front of boiler setting, both dampers being worked by the same
handle, they are placed at the back end of the under flues at the point of entrance
into collecting flue.
Dated this 10th dox of December 189n

page_text: COMPLETE SPECIFICATION.
An Improved Setting for Lancashire Steam Boilers.
1, FOUNTAIN LIVET, 67 Finsbury Pavement, London, E.C., in the County of
Middlesex, England, Civil 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 improvements consist in the disposition of two separate and continuous flues of
successive expanding sectional area, through brickwork setting and in continuation of
those of the boiler proper, with a grit chamber at the turning of each flue, specially
designed iron stools for supporting the boiler and back metal plates over the flue
exits.
c
Having described the nature of my improvements, the following will more clearly
show how a Lancashire steam boiler is to be erected upon this improved method:
Fig. 1, longitudinal section through side flue of boiler setting.
Fig. 2, sectional plan of setting, showing flues and stools with boiler removed from
position.
Fig. 3, plan at top of boiler, showing the arrangement of levers to work dampers.
Fig. 4, front elevation of boiler showing soot-doors and front spindle for handle
working dampers and levers.
Fig. 5, section through front expansion chamber.
Fig. 6, section through back expansion chamber.
The special stools A Figs. 1, 2, 5 & 6 are each placed upon a soli 1 base of concrete B
Figs. 1, 5 & 6 and of a sufficient number for the size of boiler to be set. They have
fitted upon their top parts a series of supports or chipping pieces C Figs. 2, 5 & 6
cast upon them longitudinally to the boiler, and of the same radius at their tops as
that of the boiler.
The brickwork setting proceeds by building a longitudinal division wall D Figs. 2,
5 & 6 between the stools A Figs. 1, 2, 5 & 6, commencing from the front wall of the
setting E Figs. 1 & 2 and finishing at the other end, in the collecting flue F,
Figs. 1 & 2, if several steam boilers are upon the same shaft. This division wall is
closed at top by a coping so as to avoid as much as possible brick surface touching
the boiler shell which prevents the plates corroding. Two side walls G Figs. 2, 5 & 6
are then built longitudinally to the boiler (one on each side of the division wall D)
commencing at about two feet from the front wall E Figs. 1 & 2 of the boiler setting
and finishing at the dampers H Fig. 3, the tops of these two walls G Figs. 2, 5 & 6
like the former one-finish by a brick coping against the shell of boiler so as to separate
the flues K Figs. 2, 5 & 6, from the side flues L Figs. 2, 5 & 6.
At the back of boiler, the two under flues K Figs. 2, 5 & 6, are covered with an
horizontal metal plate 1 Figs. 1 & 6 attached to the end of boiler; this iron plate is
covered with a fire-brick lining J Figs. 1, 2 & 6.
The exit of the flue tubes of the boiler are also separated from each other by a
metal plate M Figs. 2 & 6 so as to lead the current of gases separately into the side
flues L Figs. 2, 5 & 6 of the setting. At the exit of the boiler flues and at their
junction with the side flues L Figs. 2, 5 & 6 is a grit or expansion chamber N
Figs. 2 & 6, the pits of which finish below the inverted arches of the side flues L
Figs. 2, 5, & 6, these two side flues commence at the grit chamber N and extend
toward the front of boiler, stopping at a distance of about two feet from the
termination of the side walls G of the under flues K, so that at the point where the
side flues L are connected with the under flues K a second grit or expansion
chamber Figs. 1, 2 & 5 is formed. The tops of the side flues L and expansion
chambers N & O are closed against the boiler shell below the water line.
The direction of the draught is therefore from the boiler tubes or flues into the side
flues L, from thence into the under flues K, along boiler, through dampers H to the
collecting flue F.

page_text: The principle of the two separate series of flues from the boiler to the dampers H,
independent of their special construction and form, is of successive expanding area
for every flue when changing its direction, this is for reducing the velocity of the
gases in the flues and maintaining the regularity of introduction of air through the
furnace grate.
The two dampers H Fig. 3 are on the pivotting principle, actuated by suitable
levers and rods from an handle at the front of boiler setting (both dampers being
worked by the same handle) which places the dampers under the complete control of
the stoker. The dampers H Fig. 3, are placed at the back end of the under flues K,
at the point of entrance into the collecting flue F.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is :-
1. As part of my improved setting for Lancashire steam boilers, the special metal
stools, each fitted with a series of separate high chipping pieces, adjusted longitudinally,
for supporting the boiler.
2. As part of my improved setting for Lancashire steam boilers the division wall
with coping at top between the metal stools for dividing the portion of flue.
3. As part of my improved setting for Lancashire steam boilers the double
continuous and separate expanding flues of special construction and form through
brickwork setting, in continuation of the furnace flues of the boiler, in combination
with intervening expansion chambers to each flue.
4. As part of my improved setting for Lancashire steam boilers the special arrange-
ment of metal plates for covering and dividing the portion of flue at the back end of
boiler.
5. As part of my improved setting for Lancashire steam boilers the arrangement of
double door dampers united by cranks and rods, for a simultaneous action from the
front of boiler setting.
6. The whole as aforesaid 'generally described and for the purpose set forth.
Dated this 16th
11001
FOUNTAIN LIVET