CERTAIN IMPROVEDENTS IN FURNACES, AND THE FLUES OF STEAM BOILERS, FOR THE PURPOSES OF CONSULING THE SMOKE AND ECONOMIZING THE FUEL
Year: 1846

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, AMBROSE
LORD, o: Allerton, in the County of Chester, Toll Collector, send greeting
WHEREAS Пlci present most Excellent Majesty Queen Victoria, by Ter
Letters Patent under the Great Seal of Gicat Butain, beaning date at West-
ininster, the Twenty-fourth day of June, in the tenth year of Hei reign, and
in the year of our Lord One thousand eight hundred and forty-six, did, for
Herself, He heus and successors, give and giant unto me, the said Ambrose
Lord, Her especial licence, full power, sole privilege and authority, that
I, the said Ambrose Lord, my executors, administrators, and assigns and such
others as I, the said Ambrose Loid, my executois, administrators, or assigns,
should at any time agice with, and no others, from time to time and at all
times during the term of years therein expressed, should and lawfully might
make, use, exercise, and vend, within England and Wales, and the Town of
Berwick upon Tweed, my Invention of CERTAIN IMPROVEDENTS IN FURNACES,
AND THE FLUES OF STEAM BOILERS, FOR THE PURPOSES OF CONSULING THE SMOKE AND
ECONOMIZING THE FUEL," in which said Letters Patent is contained a proviso,
that I, the said Ambiose Lord, shall cause a particular description of the
nature of my said Invention, and in what manner the same is to be performed,
to be inrolled in Her Majesty's High Court of Chancery within six calendar
months next and immediately after the date of the said in part recited Letters
Patent, as in and by the same, reference being thereunto had, will more fully
and at large appeal
NOW KNOW YE, that in compliance with the said proviso, I, the said
Ambrose Lord, do hereby declare that the nature of my said Invention

page_text: and the manner in which the sa.ne is to be performed, is particularly described
and ascertamed in and by the Drawings hereto annexed, and the following
explanation thereof (that is to say).
My improvements in furnaces and the flues of steam boilers for the purposes
of consuming the smoke and economizing the fuel. consist in the application,
employment or use of two furnaces or sets of fue bars to cach boiler, which are
to be fed or supplied with coal alternately and also in ananging or constructing
the flues and regulating the dampers in such a manner that the smoke gas,
and other unconsumed combustible matter evolved from the fine that has
been last fed shall pass under and through the other fire, which is to be at a
clear red heat, and thus be consumed When the fic which was last fed has
attained a red leat, so as to give out no suoke, the dampers are to be reversed,
which will reverse the draught The other furnace or fine-place may then be
fed or supplied with fuel, and the smoke and gas from it will pass under and
through the clear red fire an so on alternately In order more clearly to
explain my Invention, an'l the method of carving the same into practical effect,
I have attached to these Presents two Sheets of Drawings Sheet 1 showing
my improvements as applied to the boiler of an oidmary stationary steam
engine, having two moveable gates, and Sheet 2 representing a boiler with
two stationary grates In Sheet 1. Figue 1 is an horizontal section. Figure 2,
a vertical longitudinal section, and Figure 3 is an end view of a cylindrical
boiler, with my improvements" applied thereto ,,a,, is the brickwork
supporting the boiler b, b
This boiler has two oval flues c c and d. d,
extending through it from end to end
The lower flue c is provided with
ails upon which the moveable grates and gun, being provided with
wheels h, h h, h, for that purpose It will be seen that the boiler is provided
with a water space ?, about the centic, extending across the upper half of the
flue c, c, and forming a bridge to duect the course of the smoke, &c, on a budge
formed of buckwork may be used, and the flue c, c, is provided with cross bais
k, k, h, h, from which hang swing doors 1777, which when shut serve also to
duect the passage of the smoke and gases, and which may be opened for the
purpose of removing the ashes &c, mand are two upright flues, each leading
to the chimney, and o, o, are the fire doors, which must be provided with air
valves for the purpose of regulating the draft When it is desired to heat
the boiler. both of the moveable grates f and gare brought towards the fie
doors, and the fires lighted, all the dampers are then opened by placing the
leveis P and q (which work the dampers) in a perpendicular position, but as
soon as one file (say g) has attained a clear red heat it is to be pushed along
the oils e, e. as fai backwards as the bridge i, 2, and the lever q pulled

page_text: outwards, which will open the damper r, and close the damper s, and by means
of the rod t, and lever p, open the damper u, and close the damper 2 The
apparatus will then be in the position shown in the Drawing, and the smoke
and other combustible proceeding tion the grate f. being guided by the swing
doors 7, 7, and the budge 22, will pass under the furnace and through the clear
ed fire on the grate g, and thereby be consumed and converted into pure heat,
thus effecting a great economy of the fuel. When the fire in the gratef has
burnt clear, and the furnace requnes a ficsh supply of fuel, the grate y is
drawn forward towards the hie doors and fed with fuel, and the gate fis
pushed backwards close to the budge 22, the dampers are then reversed by
means of either of the levers p, q, thus altering the direction of the current on
diaught through the flues, and causing the smoke. &c evolved from the coal
upon the grate g to pass under the finace and through the clear fine in the
grate f, and so on alternately
When it is desned to check the steam, it may
readily be done by drawing both grates towards the fire doors, and opening on
withdrawing all the dampers Figure 4 is a transverse section shewing the
application of my Invention to a waggon-shaped boiler, which having similai
letters of reference to those on Figures 1, 2, and 3, is so obvious as to need no
further description In Sheet 2, Figure 1 is an houzontal section. and Figure 2
an end view of a evlin cal boiler, showing the application of my Invention,
with two stationary grates a, a, is the buckwork, and b, b, the boiler, which
has two oval flues c, c, and d, d, extending through the same from end to end on
a level with each other The flues c, c, and d, d, contain the two stationary fire
grates e, e and ff, one at each end of the boile It will be seen also that at
cach end of the of the boiler there is a flue g,g*, connecting the ends of the
two flues c and d, and that the he doors h, h*, (which must be furnished with
air valves) are fixed in the flues g, 9* These flues also communicate with the
vents, which lead to the chimney, and these vents 1,2*, are connected
together by a flue (which is not seen in the Diawing) passing under the boiler
Now, supposing the fine grate e to have just received a fresh supply of fuel,
and that upon the fire gate f to be buning at a clear red heat, then the
lampe, in the flue g*, must be opened by means of the lever 1, which at
the same time will close the damper m*, communicating with the vent 2*, and
the damper n in the vent * leading to the chimney must be closed
other end of the boiler the damper m must be opened, and the dampeisk and
n closed
The smoke from the newly fed fire e, will pass through the flue c, c,
along the fluc g*, under and through the clear fire in the giate f, by which it
will be consumed and converted into pure heat, which the draught of the
chimney will cause to pass through the flue d, down the vent i, under the
At the

page_text: boiler to the vent 23, and thence to the chimney. When fiesh fuel is supplied
to the fue f, the dampers must be reversed, and of course the daught and
consequently the passage of the smoke, heated an, &c will be reversed also.
I would here remark that although the flues in which the fire grates are placed
aic described as being oval, and also shewn in the Drawing as such, yet I do
not intend to confine myself to that shape, although I would recommend its
use, as allowing of a greater width of fire bars in the saine cucumference or
area; noi do I claim as my Invention the use of two fie-grates to one boiler,
but I do claim as my Invention, the application, employment, or use of two
separate or distinct fine grates or finaces (whether moveable or stationary) to
one boiler, which are to be fed or supplied with fuel alternately, and which are
to be connected together by flues regulated by dampers in such a manner that
the smoke and other products of combustion evolved from the furnace or fine-
place which was last fed or supplied with fuel, shall be caused to pass under
the other furnace or file-place, and upwards through the fine of the same, for
the purposes of consuming the sınoke and economizing the fuel.
In witness when cof, I have hereunto set my hand and seal, this Twenty-