Improvements in Smoke Consuming Furnaces and Stoves.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Smoke Consuming Furnaces and Stoves.
I, ROBERT ZEILER, of Theresienstrasse 83/II, Munich, in the Empire of Germany,
Sculptor, do hereby declare the nature of this invention to be as follows:-
The present invention is a smoke consuming furnace suitable for small fires,
such as stoves open chimneys and the like and for larger furnaces, for steam'
boilers, central heating furnaces and the like.
The combustibles reduced to gas upon the formost part of an oblique lying
grate, this part being covered with a plate. The carbonic oxide gases arising
here can not directly escape but in consequence of a downwardly directed tongue.
nearly separating the foremost part of the combustion chamber from that lying
behind (forming the outlet) with the exception of a small opening, they are forced
to pass close upon the hinder lying combustibles which burn more intensely by
the greater introduction of air. The gases are there lighted and mixed with
the secondary draft coming in through the second or hinder lying door in order
to be entirely consumed.
The single grate bars from the front rearwards either taper gradually or are
reduced from time to time in order that the intermediate spaces may become
larger rearwardly.
The air introduction is thus regulated by itself since at the front part only
little but at the back part a large introduction of air is obtained.
The hinder part lying close to the outlet having the greatest fresh air intro-
duction, the carbonic oxide gases, produced on the front part of the grate
from the combustibles in their first state of burning also consume as much as
possible the combustibles coming by and by to the rear part & cause them to
burn completely leaving behind as little refuse as possible.
By the oblique arrangement of the grate and also by the next throw of fresh
fuel, the former fuel moves always nearer to the chief burning place (the widest
part of the grate) to compensate for the fuel burned.
From such a grate there drop down with the ashes scoria and so on, some unburnt
or partially burnt fuel, a second horizontal grate called a sifting grate is therefore
placed between the first grate and the ash box in order that the products dropping
down through the upper grate fall first upon the sifting grate provided with
narrower intermediate spaces.
The ash being not so large drops through into the ash box whilst unburnt fuel
by introduction of fresh air through the undermost door will burn completely
on the sifting grate.
Instead the tongue close to the grate an issue opening can be arranged further
on, which has the same effect.
In different arrangements of the grate, the air introduction can be effected by
a vertical grate closing the combustible chamber in front, whilst the horizontal or
likewise oblique lying grate is destined only for the ashes.
The next throw of fresh fuel is effected either through the damper above or
through an intermediate passage in the shell for the stove or furnace.

page_text: In applying this invention to a room stove with open fire the combustion
column is carried a little further on in order to be then divided in two to touch
all the walls of the stove and the inner space of the radiator thereon.
By the arrangement of horizontal intermediate walls and a vertical wall dividing
the stove into two parts, the fire gases are forced to pass in serpentine turnings
through the radiator before escaping through the outlet, and in this manner the
utmost possible utilization of the fire gases is obtained..
Dated this 18th day of July 1808
HERBERT HADDAN & Co.,
Agents to Applicant.
Improvements in Smoke Consuming Furnaces and Stoves.
I, ROBERT ZEILER, of Theresienstrasse 83/II Munich, in the Empire of Germany,
Sculptor, 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:-
The present invention is a smoke consuming furnace suitable for small fires,
such as stoves, open chimneys, and the like, and for larger furnaces, for steam
boilers, central heating furnaces, and the like.
The annexed drawing shows different forms of this new furnace or stove.
Fig. 1 shows a furnace for steam boilers in longitudinal section.
Fig. 2 shows a furnace for steam boilers in sectional plan.
Figs. 3 and 4 show an open chimney stove in front elevation and vertical section
respectively.
Figs. 5 and 6 show a further open chimney stove in elevation and section, and
Fig. 7a stove for a room with open grate.
The combustibles are reduced to gas upon the foremost part of an oblique
lying grate, this part being covered with a plate s. The carbonic oxide gases
arising here cannot directly escape but in consequence of a downwardly directed
tongue or tongues (Fig. 1) nearly separating the foremost part of the com-
bustion chamber from that lying behind (forming the outlet) with the exception
of a small opening, they are forced to pass close upon the hinder lying com-
bustibles, which burn more intensely by the greater introduction of air.
gases are there lighted and mixed with the secondary draft coming in through
the second or hinder lying door e in order to be entirely consumed.
The
As shown in Fig. 2 the single grate-bars from the front rearwards either taper
gradually as at or are reduced from time to time by graduations as at 2
in order that the intermediate space may become larger rearwardly.
The air introduction is thus regulated by itself since at the front part only
little, but at the back part a large introduction of air is obtained.
The hinder part lying close to the outlet a having the greatest fresh air intro-
duction, the carbonic oxide gases, produced on the front part of the grate
from the combustibles in their first state of burning also consume as much as
possible the combustibles coming subsequently to the rear part and cause them
to burn completely leaving behind as little refuse as possible.
By the oblique arrangement of the grate and also by the next throw of fresh
fuel, the former fuel moves always nearer to the chief burning place (the widest
part of the grate) to compensate for the fuel burned.
From such a grate there drop down with the ashes scoria and so on, some
unburnt or partially burnt fuel, so a second horizontal grate & called a sifting
grate is therefore placed between the first grate and the ash box e in order

page_text: that the products dropping down through the upper grate rl 2 fall first upon
the sifting grate d provided with narrower intermediate spaces.
The ashes being smaller drop through into the ash box e whilst the unburnt
fuel by introduction of fresh air through the undermost door f will burn completely
on the sifting grate d.
Instead of the tongue b (Fig. 1) close to the grate an issue opening b¹ can be
arranged further on, as shown in Fig. 5, which has the same effect.
Figs. 34, 5 and 6 show different arrangements of the grate, the air introduction
can be effected by a vertical grate u closing the combustion chamber in front,
whilst the horizontal or likewise oblique lying grate is destined for passing
the ashes.
The next throw of fresh fuel is effected either through the lid or cover
above
or through an intermediate passage in the shell of the stove or furnace as
shown in Fig. 7.
It is evident that the sifting grate can here be employed also, but this is not
shown in the drawing.
As seen in Fig. 7 in applying this invention to a room-stove with open fire the
combustion column is carried a little farther on in order to be then divided into
two parts, to touch all the walls of the stove and the inner spaces g of the
radiator thereon.
By the arrangement of horizontal intermediate walls and a vertical wall k
dividing the stove into two parts, the fire gases are forced to pass in a serpentine
course through the radiator before escaping through the outlet, and in this manner
the utmost possible utilization of the fire gases is obtained.
The combustion column being conducted farther on as shown in Figs. 3, 4,
and 5, also effects a greater radiation of heat.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. Smoke consuming furnaces or stoves characterized by the arrangement of
a tongue or tongues of fire proof material and dividing the combustion chamber
(except a small opening close to the grate) into two or more unequal parts in order
to force the carbonic oxide gases, formed with small air introduction upon the
front part, covered by a plates lying obliquely, to act upon material lying farther
along the grate and already burning intensely by further air introduction in order
to burn the combustion gases completely by mixture of fresh air.
2). In a smoke consuming furnace or stove the arrangement of a grate in the
furnace with grate bars reduced in thickness by degrees or by gradations from
the front to the rear in order to enlarge the intermediate spaces, thus enlarging
gradually the spaces for the introduction of fresh air.
3). In a smoke consuming furnace or stove an arrangement in which the tongue b
is replaced by an issue opening 61 in the rear of the combustion chamber near
the grate.
4. In a smoke consuming furnace or stove the arrangement of a second hori
zontal sifting grate d placed between the main oblique lying grate r1 r2 and
the ash box arranged to catch the falling unburnt materials in order to burn them
completely on this grate & whilst the ashes drop into the ash box e.
Dated this 18th day of April 1899
HERBERT HADDAN & Co.,
Agents to Applicant,
18, Buckingham Street, Strand, London, W.C.