Improvements in and relating to Funnels of Furnaces and Stoves.
Year: 1894

page_text: Date of Application, 10th Sept., 1894
Complete Specification Left, 6th July, 1895-Accepted, 7th Sept., 1895
PROVISIONAL SPECIFICATION.
Improvements in and relating to Funnels of Furnaces and Stoves.
I, LUDOVICUS GERARDUS KOк, Manufacturer, Delft, Holland, do hereby
declare the nature of this invention to be as follows, reference being had to the
accompanying drawings and to the letters and figures marked thereon, that is to
Say
This invention has reference to and comprises a new and improved arrangement
of the funnels of furnaces in order to obtain a combustion and draught superior to
the appliances heretofore in use for this purpose.
And in order that our said invention may be properly understood, I have here-.
unto appended an explanatory drawing in which the same reference letters are used
to indicate corresponding parts in the figures where shown.
Figure 1 is a sectional elevation of the arrangement of the funnel, as it may be
applied to the flue leading to the chimney.
Figure 2 is a sectional elevation of the arrangement as it may be applied to the
chimney itself.
Figure 3 is a sectional elevation of the arrangement, as it may be applied to the
funnel of an ordinary stove, hearth, fire-place, or the like.
Figure 4 is a sectional elevation of the arrangement as it may be applied to heat
two or more rooms by only one stove, hearth, fire-place or the like.
Figure 5 is a sectional elevation of the apparatus, that may be applied in
combination with the above arrangement in several cases as in those indicated by
the Figures 3 and 4.
The new and improved arrangement of the funnel consists of putting (placing) a
channel C sideways of the ordinary funnel A. or of the chimney B of the furnace.
This sideway-channel C issues at its two ends a and b in the funnel or chimney and
is provided with a valve or cock c to regulate the free opening. The funnel or
chimney is closed wholly between the ends a and b of the channel C by a wall or
plate d, so that the sinoke or gases are obliged (forced) to flow through the side-
way-channel C. Moreover it must be possible to regulate exactly the quantity of
air flowing in the furnace under the grate.
The sideway-channel may be made of one or more parts, and though it will be
preferable to give it a circular set section, any other section may be applied. It
will further be desirable to round the corners of the channels, as is shown in the
figures.
Instead of one sideway-channel two or more may be applied one after another to
the funnel or chimney.
In combination with the sideway-channel C a box D, Figures 3, 4, 5 may be
applied, provided with one or more screens e f g which do not extend over the
whole length of the box and which are so placed that alternately at the two ends
openings are formed, as is indicated in Fig. 5. The gases are thus obliged to flow
in a serpentine way along the screens.
This box D with one or more screens e f g may be applied in the funnels of
stoves, hearths or other fire-places, before or after the said sideway-channel C, as is
shown in Fig. 3. It may also be applied to heat two or more rooms with one stove
or hearth. In that case the first room is heated by the stove, or hearth, and the
second, third and following by the box or boxes with screens, as is shown for two

page_text: rooms in Figure 4. The sideway-channel is then applied to the funnel of the stove
or hearth.
Sideway-channel C in combination or not with one or more boxes with screens
may be applied to all kinds of furnaces, thus also to the funnel or chimney of
marine-engines, locomotives and the like.
Coke is preferably burnt instead of coal.
Improvements in and relating to Funnels of Furnaces and Stoves.
I LUDOVICUS GERARDUS KOк, Manufacturer, Delft, Holland, do hereby
declare the nature of my invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement in writing, that is to say :-
My invention has reference to and comprises a new and improved arrangement
of the funnels of furnaces, in order to obtain combustion and draught superior to
the appliances heretofore in use for this purpose.
And in order that my said invention may be properly understood I have here-
unto appended an explanatory drawing in which the same reference letters are
used to indicate corresponding parts in the figures where shown.
Figure 1 is a sectional elevation of the arrangement of the funnel, as it may be
applied to the flue leading to the chimney B.
Figure 2 is a sectional elevation of the arrangement, as it may be applied to
the chimney B itself.
Figure 3 is a sectional elevation of the arrangement, as it may be applied to the
funnel of an ordinary stove K, or a hearth, fire-place, or the like.
The new and improved arrangement of the funnel consists in placing a channel C
sideways of the ordinary funnel A or of the chimney of the furnace. This side-
way channel C issues at its two ends a and b into the funnel or chimney and is
provided with a valve or cock c to regulate the free opening. The funnel or
chimney is provided between the ends a and b of the channel C with a valve d or
it may be closed wholly by a wall or plate. The smoke is thus obliged to flow
through the sideway channel C and this arrangement has proved to give a great
saving of fuel. The arrangement of the furnace must be so that it is possible to
regulate exactly the quantity of air flowing into the furnace under the grate. In
beginning the heating of a furnace the valve d may be opened to give less resistance
to the smoke. Afterwards when the fire is normal this valve can be closed and
the draught may then be regulated by the valve c.
The sideway channel C may be applied to all kinds of furnaces as also to the
funnels or chimneys of marine-engines, locomotives and the like, and it may be
used in combination with all other kinds of arrangements to regulate the draught
or improve the economy of combustion.
It may be applied to furnaces for all kinds of fuel but it gives the greatest
economy by burning coke.
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 :-
The construction or arrangement of a sideway channel placed against the funnel
or chimney of furnaces and provided with a cock or valve to regulate the free-
opening, the funnel or chimney being provided between the ends of the sideway

page_text: channel with a valve or it may be wholly closed by a wall or plate, so that the
smoke or gases are forced to flow through the sideway channel in order to get a
more economical burning of the fuel substantially as herein described in
reference to and by way of application shown in the accompanying drawings.
Dated the 5th day of July 1895.
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.