Improvements in or connected with Steam Boiler and other Furnaces.
Year: 1892

page_text: Date of Application, 1st Apr., 1892
Complete Specification Left, 4th June, 1892-Accepted, 9th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Steam Boiler and other
Furnaces.
We JOSEPH BURTON of 11 Smithy Row in the Town of Nottingham Provision
Merchant and HENRY NEALE of 1 Matlock Street, Sherwood Street, Nottingham
aforesaid and FRANK ERNEST BURTON of 11 Smithy Row aforesaid Provision
Merchant do hereby declare the nature of the said invention to be as follows:-
Our invention relates to improved means for heating air and supplying it to the
inner fronts, of steam boiler furnaces. According to our invention we provide a
coil, or coils, of piping extending backwards and forwards along, and on or next
to the outer top, or side, or sides, or top and side, or sides, of the boiler the said
coil, or coils, terminating in the furnace at the front end thereof. The said coil,
or coils, is, or are, enclosed by a casing and, if desired, can be covered by asbestos,
or the like non-conducting material. By means of an air forcing device, preferably
by a fan driven by a small steam or gas engine we force air through the coil, or
coils, the air supply being taken from any suitable place outside, or inside, the
building in which the boiler is placed there being a damper, or dampers or valve
or other suitable device for regulating the air to be discharged from the coil or
coils into the furnace. The coil, or coils, so arranged affords or afford a very
extended backward and forward passage, or passages, for the air which is thus
highly heated before reaching the point of discharge and is, in this highly heated
condition, discharged at the front part of the fire, through a pipe, or the like,
arranged inside the front part of the furnace.
Furnaces to which the arrangement described is applied require much less fuel
in which we effect a great saving and consequently to keep the fire more compact
we reduce the floor of the furnace to about one half the ordinary size and we
obtain a greater intensity of heat from, and a practically complete combustion of,
the fuel combined with an almost entire consumption and consequent avoidance of
smoke. We can
moreover efficiently burn inferior fuel. The arrangement
described may be simply and readily applied to existing steam boiler furnaces,
and can be easily kept in working order. Moreover it can be applied and used
by any ordinary engineman or stoker. We can also apply our invention to the
other furnaces such as for instance those of destructors or other furnaces for
burning and destroying the refuse of towns.
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of Amil 1000
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in or connected with Steam Boller and other
Furnaces.
We, JOSEPH BURTON of 11 Smithy Row, in the Town of Nottingham Provision
Merchant, and HENRY NEALE of 1 Matlock Street, Sherwood Street, Nottingham
aforesaid, and FRANK ERNEST BURTON of 11 Smithy Row, aforesaid, Provision
Merchant, 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:-
Our invention relates to improved means for heating air and supplying it to the
inner fronts of steam boiler or other furnaces. According to our invention we

page_text: provide a coil, or coils, of piping extending backwards and forwards along, and on
or next to the outer top, or side, or sides, or top and side or sides of the boiler or
in the crown of a furnace the said coil, or coils, terminating in the furnace at the
front end thereof. The said coil, or coils, is, or are (when applied to a steam
boiler) enclosed by a casing and if desired can be covered by asbestos or the like
non conducting material. By means of an air forcing device preferably by a fan
driven by a small steam or gas engine we force air through the coil, or coils, the
air supply being taken from any suitable place outside, or inside the building in
which the boiler is placed there being a damper, or dampers or valve or other
suitable device for regulating the air to be discharged from the coil or coils into
the furnace. The coil or coils, so arranged affords or afford a very extended.
backward and forward passage or passages for the air which is thus highly heated
before reaching the point of discharge and is in this highly heated. condition dis-
charged at the front part of the fire through a pipe, or the like arranged inside the
front part of the furnace.
. Furnaces to which the arrangement described is applied require much less fuel
.in which we effect a great saving and consequently to keep the fire more compact
we reduce the floor of the furnace to about one half the ordinary size and we
obtain a greater intensity of heat from and a practically complete combustion of
the fuel combined with an almost entire consumption and consequent avoidance of
smoke. We can moreover efficiently burn inferior fuel. The arrangement
described may be simply and readily applied to existing steam boiler furnaces, and
can be easily kept in working order. Moreover it can be applied and used by any
ordinary engineman or stoker.
We can also apply our invention to other furnaces such as for instance those of
destructors or other furnaces for burning and destroying the refuse of towns and
for heating purposes.
And in order that our invention may be fully understood we shall now proceed
more particularly to describe the same and for that purpose shall refer to the
several figures on the annexed sheets of drawings the same letters of reference
indicating corresponding parts in all the figures.
Figures 1, 2 and 3 represent in end elevation side elevation and plan respectively
a steam boiler and furnace provided with our improved device for heating air
..before it enters the furnaces, the covering or casing of the boiler being shewn in.
section in Figures 1 and 2 and being removed from Figure 3 so as to shew more
. clearly the coils for heating the air.
Figure 4 is a partial transverse section of one of the furnaces or flues drawn to
a larger scale shewing the crescent shaped discharge pipe by which the heated air
is conducted onto the fuel at the front upper end of the furnace and
Figure 5 is a transverse section of the said discharge pipe drawn to a still larger
scale.
Figures 6 and 7 are respectively a front elevation and a longitudinal section of
a destructor furnace shewing the application thereto of our improved air heating
device and
Figure 8 is a detached view of one set of the heating coils..
Referring to Figures 1 to 5 A is the body or shell of the boiler, B the internal
furnaces or flues and C the brick setting. The upper part of the boiler A is
enclosed by a casing or covering D which if desired may be clothed with asbestos
or other suitable non-conducting material d. Between this casing or covering D
and the shell A of the boiler is a space E constituting a chamber in which are
arranged coils of pipes F which extend longitudinally from end to end near the
top of the boiler through which coils air is caused to pass before it is admitted to
the furnace or furnaces B. The air is forced through the coils E which may be
done by means of a fan or other suitable forcing device connected with the pipe G
from which the coils E branch. The delivery end of each coil of pipes F com-
municates with a crescent shaped tube or chamber H arranged at or near the top
and at the front end of the furnace this crescent shaped tube or chamber has

page_text: perforations or a continuous or elongated discharge opening as shewn at h or a
number of nozzles through which the heated air passes into the furnace above the
fuel. The delivery ends of the coils F are provided with valves or dampers as
shewn at a by closing which the air may be retained in the coils so as to cause it
to become highly heated and by opening which the heated air is admitted to the
furnace s required. We are aware that coils of pipes for heating air have been
arranged in smoke box or uptake of steam boiler furnaces but these have been
found to be expensive and difficult to apply, to interfere with the cleansing of the
uptake and to impede the draught of the furnace by absorbing the heat from the
products of combustion passing to the chimney, whereas by arranging coils
according to our invention as shewn in a longitudinal direction in a casing or
chamber on the boiler shell the draught of the furnace is not affected whilst the
said coils offer an extended heating surface and become highly heated by the heat
which would otherwise be radiated from the boiler and lost. In applying our
invention to other than steam boiler furnaces, for example to a destructor furnace
as shewn in Figures 6 and 7 the chamber E containing the coils F may be in the
crown of the furnace B and the coils may be connected to a main air supply pipe G
as shewn communicating with the fan or other air forcing device, any desired
number of chambers may be provided and each chamber may contain one, or more,
than one coil each connected to the pipe G. In the drawings we have shewn three
coils each provided with a discharge nozzle h in place of a slotted tube or chamber H
as in Figures 1 to 5 but if desired a slotted or perforated tube or chamber H may
be employed in place of the nozzles. The pipes may be provided with dampers
such as are described with reference to Figures 1, 2 and 3 and marked a.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is. to be performed we declare that what we
claim is :-
1st. In a steam boiler the combination of a chamber enclosed on the outside of
the boiler and containing a coil or coils arranged as described and means for
forcing air thereinto so that as it passes backwards and forwards along the coil
or coils on its way to the furnace it becomes heated by the heat of the boiler
the said heated air being delivered from the coil or coils to the front end of the
furnace above the fuel by a regulated outlet or outlets all arranged substantially as
hereinbefore described.
2nd. In a furnace for burning refuse or for heating purposes a chamber or
chambers in the crown of the furnace each chamber containing a coil or coils
of pipes arranged as described and means for forcing air therethrough so that
the air is caused to pass backwards and forwards along over the furnace and so
become heated and then be delivered from the coil or coils of pipes into the
front end of the furnace by an outlet or outlets arranged above the fuel or refuse
being burned substantially as hereinbefore described with reference to Figures 6
and 7 of the accompanying drawings.
3rd. The arrangement and combination of parts as a whole as and for the
purpose hereinbefore described and shewn in Figures 1 to 5 of the accompanying
drawings.
4th. The arrangement and combination of parts as a whole as and for the
purpose hereinbefore described and shewn in Figures 6 to 8 of the accompanying
drawings.
Dated this 4th day of June 1892.
JOSEPH BURTON.
HENRY NEALE.
F. E. BURTON.