Improvements in Stoves for Use in the Manufacture of Ceramic and similar Ware.
Year: 1897

page_text: Date of Application, 10th May, 1897-Accepted, 7th Aug., 1897
COMPLETE SPECIFICATION..
Improvements in Stoves for Use in the Manufacture of Ceramic
and similar Ware.
I, LEO OTTO BOEING, of 19 Lindenstrasse, Bad Nauheim Hesse-Darmstadt, in
the German Empire, Manufacturer, 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 ring and chamber stoves for use in the manufacture of
ceramic and similar ware and has for its object the mixing below the grate of
superheated steam, produced in the exit flue of the gases of combustion, with
heated air, escaping from heated chambers, and forcing of such mixture of gases
into the fire, in order to effect better and more complete combustion and to allow
of the rational utilisation of cheap fuel. The invention consists also in the con-
struction of open channels in the direction of the draught instead of the covered
channels used hitherto, the channels being covered by slabs of fire brick, so that
small orifices are formed between the slabs for the passage of the gases. Further,
flues are provided in the dividing walls of the several chambers under the vaulting
and down in the channels below the base of stove which can be closed or divided
up by slides or dampers in order to compel the gases to pass through the several
chambers first in one direction and then in the other direction according to the
condition of the fire.
In order that my invention may be the better understood I now proceed to
describe the same, reference being had to the accompanying drawings and to the
letters and figures marked thereon.
Figure 1 is a plan of a stove constructed according to my invention.
Figure 2 shows a section on the line C-D of Figure 1, and Figure 3 shows a
section on the line of Figure 1.
As shown in Figure 1 the several grates are arranged as in ordinary stoves in
the longitudinal and draught direction of the stove and occupy the whole width
of the "head" side; in the flue « for the exit of the gases of combustion are
arranged one or more water pipes 6 and steam pipes c (connected with one another
by short pipes) which communicate with the steam boilers D situated in the rear
part of the uptake and immediately in front of the place where the latter communi-
cates with the chimney.
Short pipes in the “uptake" connect the pipes b and c.
from the steam pipe c, which are distributed over the whole stove and which at a
Pipes e branch off
certain time effect the superheating of the steam. The pipes c end in nozzles
below the several grates R, through which the steam is forced into the fire, and
the arrangement is preferably so that as shown in the drawings, the end of each
pipe e is provided with several nozzles g, arranged in a small channel e¹, Figure 2,
which directs the hot air from the previously heated chamber, the hot air being
ext mixed with superheated steam and forced under the grate. The hot air is
ucked through the channel from the preceding chamber by means of the super-
eated steam escaping from the nozzles.
The mixture of superheated steam and heated air forced into the fire effects the
D

page_text: complete combustion of the fuel, even though cheap fuel be used. The superheated
steain and heated air form water gas and carbonic oxide gases which burn with
the production of great heat and complete utilisation of the fuel, thus effecting
great economy. The apparatus produces and superheats the steam forced under
the several grates by the gases and heat of the stove, the pipes c being arranged,
as previously mentioned as branches to the grates, so that they pass over the
chamber last heated, and are thus themselves heated. Therefore the arrangement
of a special steam boiler for the production of the steam is superfluous.
The base of the stove is not provided, as is usual, with vaulted channels, but
open channels g¹ are constructed over the whole stove in the direction of the
draught, which are covered by strong slabs of fire brick. . This covering is arranged
according to requirement in such a manner that the necessary orifices for the
draught are formed between the several slabs. In order to close the channels g¹
at each end of each chamber K there is provided a slide i opposite the grate, which
slide closes the channel by being moved a distance corresponding to the width of
the channel. The slides are constructed of T iron and run on rollers embedded
under the base of the stove. The slides are provided with racks or similar
devices which allow of the T irons and the slabs of fire brick thereon being moved
to and fro. By moving the slides outwards a distance corresponding to the width
of the channel g which is about 40-50 cm. these channels may be closed and the
draught arrested. In this manner the gases can be compelled to pass through the
several chambers first in one direction and then in the other direction. However
for this purpose orifices must be provided in the upper part of the dividing
walls of the several chambers which can also be closed by slides m.
Threq
orifices are arranged each of which can be closed separately, so that the gases can
be compelled to pass through the stoves either in one or the other direction, or in
both directions. Therefore the chambers may be heated according to requirement.
The orifices o for feeding the fuel are arranged in the vaulting of the stove as
is usual, but they are distributed over the grate and the steam nozzles below it.
This apparatus thus allows of the rational and complete utilization of the gases,
because without extra expense superheated steam is produced by the arrangement
of the steam pipes over the chambers of the stove, the superheated steam thus
produced affording better utilization of the fuel by being mixed with superheated
air and forced into the grate. Further this construction allows of the even heating
of the several chambers according to requirement, by the arrangement of open
draught channels and of the draught stopping device, whereby the gases are
compelled to: pass through the chambers know in one direction, then in the other'
direction. Finally the arrangement of the grates R on the "head" side of the
chambers in such a manner that they occupy the whole width of the "head" side
effects better combustion and better utilization of the fuel, but the greatest
advantage obtained thereby is the complete and even passage of the flame over the
chambers.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I
claim is:
1st. In ring and chamber-stoves the mixing below the grates of superheated
steam, produced in the channel for the escape of the fire gases, with air from
the heated chambers and the forcing of such mixture into the fire in order to
obtain the most rational combustion.
2nd. In the arrangement claimed in Claim 1 the arrangement of open channels
in the direction of the draught, which are covered by slabs of fire-brick in such a
manner that small orifices are formed between the several plates for the passage
of the gases in order to allow of the even heating of the chambers.
3rd. In the arrangement claimed in Claims 1 and 2 the arrangement of slides i
and m which compel the gases, by opening or closing of channels and orifices
and respectively to pass over the several chambers first in one direction and
then
in the other direction.

page_text: 4th. In the arrangement claimed in Claims 1, 2 and 3 the carrying of the steam
pipe e over the chambers heated under the greatest heat in order to obtain complete
superheating of the steam.
5th. In the arrangement claimed in Claims 1, 2 and 4 the arrangement of
grates Roccupying the whole width of the "head" side in order to obtain better
combustion and even heating of the chambers by the gases.
ש
10.1 1
1003
FELL & JAMES,
Agents for the Applicant.