Improvements in or relating to Boiler and other Furnaces.
Year: 1894

page_text: Date of Application, 2nd Nov., 1834
Complete Specification Left, 2nd Aug., 1895-Accepted, 7th Sept., 1895
PROVISIONAL SPECIFICATION..
Improvements in or relating to Boiler and other Furnaces.
1
I, JOHN SUTTON of Grapes Hotel, Freshfield in the County of Lancaster,
Master Mariner, do hereby declare the nature of this invention to be as follows :-
This invention relates to steam boiler and other furnaces and flues and is designed
to obtain more perfect combustion and augment the heating power. Moreover I
am enabled to obtain absence of smoke.
In carrying my invention into effect, I arrange within the flue of a furnace a
fire-bridge of firebrick, fireclay or the like. This is of any suitable height and
preferably extends from the bottom of the Hue to a point above the firebars. Al
the back of this fire-bridge I locate an air tank or reservoir which is supplied with
an artificial current or supply of air by means of. pipes which lead from the front
of the furnace to the tank, passing under the firebars and through the bridge.
These pipes being thus exposed to the grate where the fire is hottest, the air is
heated during its progress to the tank, and is further heated in the tank. The said
pipes are of sufficient size and number to give an ample supply of air to the tank.
The front of the furnace is preferably closed up and (or) provided with doors for
cleaning and feeding with fuel. Part of the air is delivered from the tank through
the fire-bridge and is discharged underneath the fire bars, or grate, supplying an
artificial current of heated air to the fire, where the fuel is incandescent, aud
supplying the necessary amount of oxygen which is generally lacking. The
remainder of the air current is delivered from the tank at the back of the bridge,
where it meets the flames and any gases that have not been already consumed, and
thus all the smoke and combustible gases will be consumed together, and only the
vitiated air and consumed gases are carried up the chimney flue.
Should a forced draught be required to accelerate the delivery of air, I provide
each air-delivery pipe with steam jets. The air orifice for delivering the air behind
the bridge may consist of a tube with a flaring or spreading mouth, this tube in the
case of a forced draught being provided with a steam jet which forces the hot air
from the tank through this pipe and so baffles and consumes the smoke. The tube
for supplying air to the grate may be provided with a perforated circular steam
pipe, but of course any form of steam pipe will do, and I do not limit myself to
using a perforated circular one. The tank may of course be protected in any
suitable manner from the action of the flames, such as by means of fireclay or
firebricks or by providing an additional or specially stroug plate, or two or more
thicknesses of plates.
I have described one way in which my invention may be carried into effect, but.
it is obvious that having once given the general idea, alterations may be made
without departing from the principle of my invention; thus, for example, I may
lead the air pipes direct to the back of the bridge and then upwards to form a jet
of air to meet the flames and products of combustion and another one to supply air
underneath the grate. By this means the tank will be dispensed with but on the
whole 1 prefer at present the use of a tank, as being the most convenient
Arrangement.
Detalhi-1
AL

page_text: Improvements in or relating to Boller and other Furnaces.
I, JOHN SUTTON of Grapes Hotel, Freshfield in the County of Lancaster,
Master Mariner, 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 :-
This invention relates to steam boiler and other furnaces and flues and is designed
to obtain more perfect combustion and augment the heating power. Moreover I
am enabled to obtain absence of smoke.
The invention will be understood from the following description, reference being
bad to the accompanying drawings, in which,
Figure 1 is a front elevation of a double tubed boiler fitted with my improved
apparatus ;
Figure 2, a longitudinal section; and
Figure 3, a sectional plan.
A, is a fire bridge of fireclay, firebrick or the like arranged within each flue of
the furnace, B an air tank or reservoir which is supplied with an artificial current
of air or supply of air by means of pipes or channels C which lead from the front
of the furnace to this tank passing under the firebars and under the bridge. These
pipes or channels C being thus exposed under the grate, the air is heated during
its progress to the tank B and is further heated in the tank. The said pipes or
channels are of sufficient area to give an ample supply of air to the tank B. The
front of the furnace is preferably closed up at D, and (or) provided with doors for
cleaning and feeding with fuel. Part of the air is delivered from the tank through
the orifice E and is discharged underneath the firebars or grate, supplying an
artificial current of heated air to the fire when the fuel is incandescent, and;
supplying the necessary amount of oxygen which is generally lacking. The
remainder of the air current is delivered from the tank through the orifice F where
it meets the flames and any gases that have not been already consumed, and thus
all the smoke and combustible gases will be consumed together, and only the
vitiated air and consumed gases carried up the chimney flue.
Should a forced draught be required to accelerate the delivery of air, I provide
each air delivery orifice E and F with steam jets E', F. The air orifice F may be
formed with a flaring or spreading mouth, this orifice in the case of a forced draught
being provided with a steam jet which forces or induces a current of hot air
from the tank B through this orifice and so supplies the necessary air for com-
bustion and consumes the smoke. The steam jet E' is preferably a perforated
circular steam pipe, but of course any form of steam pipe will do, and I do not
limit myself to using a perforated circular one. The tank B may of course be
protected in any suitable manner from the action of the flames, such as by means of
fireclay or firebricks, but in most cases I find that it is generally sufficient to form
it at the parts where it is mostly exposed with a thick metal plate of cast iron
or other suitable material. G and Hare the steam pipes for feeding the
jets E' and FI
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'
olaim is :-
1. The improvement in steam boiler or other furnaces or flues, which consists in
forming them inside the flue in proximity to the bridge, with an air tank or
reservoir having an orifice for discharging air under the grate, and another orifice
for discharging air through the bridge, in combination with air supply pipes or

page_text: channels leading through the flues from the front of the furnace to the tank,
substantially as and for the purposes described.
2. In a steam boiler or other furnace, the use in combination therewith of an air
tank or reservoir located in proximity to the bridge, aud provided either with
an orifice or orifices for discharging air through the bridge, or into the space under
the firegrate or with both, in combination with means for inducing a forced
draught substantially as set forth.
3. In a steam boiler or other furnace, the special arrangement of the forced air
supply channels C substantially as describod.
4. In a steam boiler or other furnace, the combination of the air tank or reservoir
arranged in proximity to the bridge, and having orifices for discharging air from
the bridge or into the space under the grate or with both, of steam injector nozzles
adapted to discharge steam through said orifices to create an induced draught
substantially as described.
Dated this 1st der of Awn 1905
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, and London, Patent Agents.