Improvements in and relating to Furnaces.
Year: 1899

page_text: Improvements in and relating to Furnaces.
We, PAUL CORNELIUS and MORITZ KLUGE, both Manufacturers, of 19, Leipziger-
strasse, Berlin, in the Empire of Germany, do hereby declare the nature of this
invention to be as follows:
-
In furnaces in which forced draught is employed which may be used in con-
nection with vapourised or gasified liquids and in which hollow grate bars are
employed through which the air passes and issues through to the fire it is found
that the air is not uniformly distributed throughout the fire and that the velocity
of the air forced through the hollow grate bars decreases towards one end very
considerably so that an imperfect combustion results at that end of the fire in
consequence of the deficiency of air. According to the invention this defect and
deficiency are avoided in such a manner that the air is not introduced at the front
but at the back of the fire near or at the fire-bridge into the hollow grate bars that
are employed. By such means air is conducted through the hollow spaces of the grate
bars from a chamber situated beneath the fire-bridge or a special air reservoir
which may be arranged for the purpose. A series of orifices are provided in the
grate bars through which currents of air may pass from the hollow interior to the
fire. Such an arrangement results in the important advantage that the greatest
amount of air is present at the back of the grate or furnace and this can be
regulated according to requirements while towards the front part of the furnace.
where a proportionately smaller quantity of air is necessary the amount of air
correspondingly decreases. The hollow grate bars are open at the front end and
may be closed by a stopper, or its equivalent, which may be capable of removal.
On the removal of this stopper, cover, or the like, the air issues out so that thereby
the ashes deposited in the interior of the grate are blown out. The hollow spaces
of the grate bars may be stopped up by ashes, small coal, or the like.
The accompanying drawing illustrates the invention in a perspective sectional
plan of a grate suitable for use in a boiler. The hollow grate bars a issue at their
rear end into an air chamber b which is provided immediately beneath the fire-
bridge c and have openings at their opposite ends which may be closed by stoppers
or covers suitably fitted therein. The air within the hollow spaces in the
grate bars issues out through orifices e into the fire as small jets. The grate bars
or orifices may be either of uniform width or diameter or may be wider towards
the front end of the furnace.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.

page_text: Improvements in and relating to Furnaces.
We, PAUL CORNELIUS and MORITZ KLUGE, both Manufacturers, of 19, Leipziger-
strasse, Berlin, in the Empire of Germany, 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:-
In furnaces in which forced draught is employed which may be used in con-
nection with vaporised or gasified liquids and in which hollow grate bars are
employed through which the air passes and issues through to the hire it is found
that the air is not uniformly distributed throughout the fire and that the velocity
of the air forced through the hollow grate bars decreases towards one end very
considerably so that an imperfect combustion results at that end of the fire in
consequence of the deficiency of air. According to the invention this defect and
deficiency are avoided in such a manner that the air is not introduced at the front
but at the back of the fire near or at the fire bridge into the hollow grate bars that are
employed. By such means air is conducted through the hollow spaces of the grate
bars from a chamber situated beneath the fire-bridge or a special air reservoir
which may be arranged for the purpose. A series of orifices are provided in the
grate bars through which currents of air may pass from the hollow inferior to the
fire. Such an arrangement results in the important advantage that the greatest
amount of air is present at the back of the grate or furnace, and this can be
regulated according to requirements while towards the front part of the furnace
where a proportionately smaller quantity of air is necessary the amount of, air
correspondingly decreases. The hollow grate bars are open at the front end and
may be closed by a stopper, or its equivalent, which may be capable of renewal.
On the removal of this stopper, cover, or the like, the air issues out so that thereby
the ashes deposited in the interior of the grate are blown out. The hollow spaces
of the grate bars may be stopped up by ashes, small coal, or the like.
-
The drawing filed with the Provisional Specification illustrates the invention,
such drawing being a perspective sectional plan of a grate suitable for use in a
boiler. The hollow grate bars a issue at their rear end into an air chamber
which is provided immediately beneath the fire-bridge c, and have openings at
their opposite ends which may be closed by stoppers or covers d suitably fitted
therein. The air within the hollow spaces in the grate bars issues out through
orifices e into the fire as small jets. The grate bars or orifices may be either of
uniform width or diameter or may be wider towards the front end of the furnace.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
(1) The improved arrangement of hollow fire-bars for use in connection with
furnaces in which forced draught is employed, having their inner ends arranged
for receiving the induced air or current, by being connected or attached to an
air chamber which is situated near or beneath the fire-bridge, and having their
outer ends closed by removable cleaning plugs or stoppers substantially as before
described, and as illustrated in the accompanying drawings..
:
i
11
1000
تل
MARKS & CLERK,
18, Southampton Buildings, London, W.C., Agents.