A New or Improved Heating Stove or Furnace with Air Supply from Above.
Year: 1895

page_text: Date of Application, 9th Apr., 1895-Accepted, 11th May, 1895
COMPLETE SPECIFICATION.
A New or Improved Heating Stove or Furnace with Air Supply
from Above.
I, JOHANN LIEB of Bonn on the Rhine, Germany, Director, 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 relates to a heating stove or furnace with air supply from
above which is designed to consume the smoke gases produced therein during
combustion and effect a much more favourable utilization of the fuel.
The improved furnace is illustrated in the accompanying drawings in which :-
Fig. 1 is an elevation thereof.
Fig. 2 is a vertical section through the centre of the furnace, and
Fig. 3 is a section on the line x-r of Fig. 2.
In furnaces hitherto known the requisite air for combustion has usually been
supplied to the fire from below through the grate with the result that the unburned
smoke or gases and a portion of the heat have escaped through the flue provided
above the fire and through the chimney.
Now in a furnace constructed according to the present invention the air is
supplied to the fire from above and the unburnt smoke or gases are then completely
burned (or more completely burned than heretofore in such stoves) in their passage
through the hot grate. For the purpose of enabling the requisite air to be
supplied quickly and readily to all parts of the fire towards the upper part of the
stove a number of holes such as (advantageously downwardly inclined) are
provided through its inner wall a.
The grate c consists (as shown also in Fig. 3) of a number of tubes k arranged
side by side through which air is constantly circulating.
The outlet pipe d arranged under the fire serves to convey away only the hot
air or products of complete combustion because the generated gases have been
already all burned in passing through the grate and the lower part of the furnace.
The fuel is supplied to the fire from above as usual in a closed stove or in any
other suitable manner.
The heating efficiency of this furnace with proper firing or stoking is immensely
bigher than in an ordinary furnace of equal dimensions.
When a furnace of this kind is put in use for the first time and there is no
draught in the chimney a draught may be started by opening the throttle or
damper g which is provided in the pipe in the upper part of the furnace above
the fire and closing the throttle or damper e in the chimney flue d.
As soon as there is a sufficient draught and the fire is burning up well the
damper g is closed and the damper e is opened.
In the upper part of the stove or furnace there is a provided a door which is
slotted in its upper half; these slots are adapted to be closed to a greater or less
extent by means of a slide or damper so as to thereby allow of regulating the air
supply.
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
claim is :-
1. A furnace or stove to which the air necessary for combustion is supplied from
above through perforations such as substantially in the manner and for the

page_text: 2. A furnace or stove to which the air necessary for combustion is supplied
from above through perforations such as b and the grate c of which is composed of
tubes arranged side by side through which air is constantly circulating
substantially in the manner and for the purposes herein before described and
illustrated in the drawings-hereunto annexed."
3. The improved construction of stoves arranged combined and acting sub-
stantially in the manner and for the purposes herein before described and illustrated
in the drawings hereunto annexed.
Dated this 9th day of April 1895.
TONGUE & BIRKBECK,
Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.