IMPROVEMENTS IN FURNACES FOR HEATING IRON OR FOR OTHER PURPOSES "
Year: 1882

page_text: LETTERS PATENT to William Felton of Wilden near Stourport in the County
of Worcester for an Invention of "IMPROVEMENTS IN FURNACES FOR HEATING
IRON OR FOR OTHER PURPOSES "
PROVISIONAL SPECIFICATION left by the said William Felton at the Office
of the Commissioners of Patents on the 13th November 1882.
WILLIAM FELTON of Wilden near Stourport in the County of Worcester
"IMPROVEMENTS IN FURNACES FOR HEATING IRON OR FOR OTHER PURPOSES."
My Invention which relates to furnaces for heating iron which is to be rolled
into sheets or plates or for other heating purposes consists in providing for the
generation of the gas in the actual working furnace and the immediate stoppage
of combustion at any moment. The furnace is provided with a steam nozzle
leading into a blust box situated in the furnace for the generation there of the gas.
The supply is regulated as required by a suitably placed tap. A clinkering door is
provided above the bars which will only be used for taking the Clinkers out from
the top part of the producer after the fire has been let down to the bottom of the
producer In this door there is a stoking hole by which the fire may be broken up
when necessary and beneath is a bar frame and stopper for the purpose of holding
the top fire when ashes have to be removed from the lower part of the producer.
Beneath this again is a clearing out door having therein the lower stoking hole
The air for the combustion of the gas is supplied through an air flue opened and
closed by a regulating slide the said flue being in a bridge and the air passes there-
from by passages opening at the top of the said bridge where the air comes into
contact with the gases.
An arched wall separates the combustion chamber from the fire door and also
serves to support the hopper when the stoking is done from the top of the furnace.
By means of the aforesaid slide in the air fue the combustion may be stopped
when desired. When the slide is closed a jet of blast is introduced to supply
Oxygen

page_text: blast box B provided with an iulet nozzle C by which steam and air are admitted
into the said blast box for the generation of gas in the furnace-Over the opening
of the inlet nozzle C opens a steam jet d the said. jet being at the end of a steam
pipe d² furnished with a tap or cock at for regulating the quantity of steam
supplied-to-the-furnace-E-is-a-clinkering-door-provided-above-the-place at which
the bars are inserted as hereinafter mentioned the said clinkering door being for
the purpose of removing the Clinkers from the top pait of the producer. e is a
stoking hole in the said door by which a tool may be inserted to break up the fuel
when necessary. F is a stopper which closes an opening in a bar frame f set in an
opening in the Furnace just beneath the level of the clinkering door E-By
removing this stopper F bars can be inserted by the opening in the frame f
and be supported by the said frame at the one end and by the wall fat the other
end G is a clearing out door for removing the spent ashes and in the said door is
the lower stoking hole g. The air for the combustion of the gas is supplied through
an air flue opened and closed by a regulating slide or damper ². The said
flue is in the bridge or wall H and the air received thercinto is heated therein and
delivered therefrom by passages h³ (opening at the top of the said bridge) and comes
into contact with the gas passing from the passages or openings k over the said
bridge An arched wall I separates the combustion Chamber from the fire door and
serves to support the hopper when the stoking is done from the top of the furnace-
The said wall I also enables flat bricks or slabs i to be used for the top of the
furnace and these can be easily taken off to admit of inspection of the interior of the
furnace The passage for air to the bridge H may open at the side as in Figure 1 or
it may be led under the sole (or at the side) of the furnace if desired as shewn
in dotted lines at in Figure 2. The regulating slide or the damper being applied
at its outer end ns at h² are openings opposite the internal outlets b from the
blast box B. These openings are closed when the furnace is in work but opened
for removing any clinkers or obstructions from the passages b³. In the drawing I
have shewn a charging door at L but it may be in any other suitable position or
n hopper at the top may be employed if desired-The nozzle C is provided with a
lid or shutter c by which its mouth may be closed.
When the furnace is put into operation the fire is built in the producer portion
of the furnace and steam is turned on at the jet d and passes into the nozzle c

page_text: drawing with it a supply of atmospheric air. The steam and air then pass into the
blast box B and then by the openings 6³ into the producer and the gas is generated
therein The gas as it passes through the openings and over the bridge H is met
by the heated air passing from the interior of the said bridge through the
openings 3 and the complete combustion thereof then takes place in the furnace
itself When ashes are to be removed the steam is turned off and the stopper F is
removed and bars are inserted through the opening in the frame f and pushed
through the contents of the producer until their inner ends rest on the end wall ƒ
their front ends resting on the said frame -The cleaning out door G is then
opened and the ashes removed-Tho said door G is then closed and the bars
removed when the fuel which was supported upon them falls into the lower part of
the Producer-The stopper F is then put in place and any clinkers which may be
left in the upper part of the Producer are removed by the Clinkering door E which
is again closed and fresh fuel is put into the producer by the charging door Lor
the hopper if such be used. The steam is then turned on again and the generation
of the gas and its combustion proceed as before-By adjusting the regulating slide
or damper 2 or 3 the air for the combustion of the gas may be admitted in the
necessary quantity. When it is desired to stop the generation of gas in the pro-
ducer this may be done by stopping the supply of stean by closing the steam tap ³
and the supply of air by closing the slide or damper 2 (or h5) the nozzle C being
closed at top by means of its cover c.-There may be one or more than one
nozzle C.
The air channels are made as deep as possible to prevent the escape of gas.
When the said channels are high up and but of small capacity a jet of blast may
be introduced thereunto.
The drawing illustrates the Invention as applied to a Tin Mill furnace. The
blast box B instead of discharging immediately into the fuel may be situated at a
lower level so as to discharge beneath an arrangement of bars permanently fixed
in the lower part of the chamber A.
The Invention is not limited to heating furnaces for heating iron to be rolled but
may be used for smelting furnaces or for puddling or other reverberatory furnaces
or for furnaces for other purposes such as for heating steam boilers the producer
being connected or formed with the part at which the heat is to be utilized in any
convenient manner.
Having now described and particularly ascertained the nature of my said
Invention and the manner in which the same is or may be used or carried into
effect I would observe in conclusion that what I consider to be novel and original
and therefore claim as tho Invention secured to me by the herein before in part
recited Letters Patent is :-
The Improvements in furnaces for heating iron or for other heating purposes
consisting in the arrangement and combination of parts constituting the furnace
substantially as herein before described and illustrated in the accompanying
drawings.
In witness whereof I the said Willian Felton have to this my Specification
set my hand and seal this twenty sixth day of April One thousand eight
hundred and eighty throe