Improvements in Heating Stoves Combining Open and Close Fires.
Year: 1889

page_text: Date of Application, 24th May, 1889
Complete Specification Left, 8th July, 1889-Accepted, 10th Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements in Heating Stoves Combining Open and Close Fires.
A communication to me from abroad by BRUNO HERRMANN, of Goerlitz, in the
Empire of Germany, Merchant.
I, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and Engineers,
of 35 Southampton Buildings, Chancery Lane, in the County of Middlesex do hereby
declare the nature of this invention to be as follows :-
Ordinary heating stoves have an open fire with a direct draught, the products of
combustion being carried directly to the chimney, whilst the close stoves in common
use have a fire which can be closed, and which has a comparatively weak and slow
draught. The present invention combines both these arrangements, in a single
stove, the products of combustion in which are compelled to pass through a
series of passages in which their heat is given out, whilst the comfort and
direct heat of an open fire place are combined with the warmth of a close stove.
Both fireplaces, the open one as well as the closed one, are provided with grates for
coal, the smoke and products of combustion from the open fire passing up through a
passage into a chamber above, the passage being provided with a damper having a
handle by which the passage can be closed when there is no fire in the open fire
place, and the close stove only is being used.
The fireplace for the close fire is situated behind the open fireplace, and has two
folding perforated doors in front of it (at the side of the stove) which can be opened
from both sides.
For lighting the fire, an inner central door is opened communicating with the
grate, and having two similar doors above and below it. When the fire is burning
the central door is closed, and when necessary coal is supplied through the upper
door, whilst the lower door communicates with an ashbox and can be left partly open
for the supply of the necessary air. Behind the grate is arranged a firebrick
back, and above the latter a bent pipe conducts the smoke and products of
combustion into the chamber above already described, which is common to both
fires. The upper end of the pipe may be provided with a moveable damper,
having a handle by which the passage can be opened and closed, so that either one
or both fires can be used as desired.
The smoke and products of combustion pass from the chamber already described
round two horizontal partitions fixed to the opposite ends of the stove, and thence
up and down round two vertical partitions, whence they pass to a chimney
at the upper end of the back of the stove, and by this means the heat
contained in them is very effectually abstracted and an excellent heating effect
produced.
The arrangement combines in a single stove the economical advantages of an
ordinary close fireplace with the comfort and appearance of the open fire. The
simultaneous use of both the open and closed fires, is only required in exceptionally
cold weather, the open fire being ordinarily amply sufficient, in which case the
damper from the other fire is closed.
It should be noted that after the open fire has gone out, its damper should be
closed so that the draught of air through it is prevented, the heat of the stove
being maintained.
تسم
1
A
1000

page_text: COMPLETE
SPECIFICATION.
Improvements in Heating Stoves Combining Open and Close Fires.
A communication to me from abroad by BRUNO HERRMANN, of Goerlitz, in the
Empire of Germany, Merchant.
.
I, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in 'the County of Middlesex,
do hereby declare the nature of the said invention and in what manner the same is
to be performed to be particularly described and ascertained in and by the following
statement, and accompanying drawing that is to say :-
Ordinary heating stoves have an open fire with a direct draught, the products of
combustion being carried directly to the chimney, whilst the close stoves in
common use have a fire, which can be closed and gives a comparatively weakened
and slow heating effect.
The present invention combines both fires in a single stove, the products of
combustion being compelled to pass through a series of passages in which their heat
is given out, whilst the comfort and direct heat of an open fireplace are combined
with the warmth of a close stove.
In the accompanying drawing figure 1 is a front view of a combined stove, figure 2
is a side view of the same, figure 3 a side view with the perforated doors opened,
figure 4 a horizontal section through the stove above the firegrates, figure 5 a
horizontal section through the stove in the lowest smoke chamber.
Both fireplaces, the open one A as well as the closed one B, figure 4, have
grates for coal, the smoke and products of combustion from the open fire A, passing
up through a passage C, into the chamber D, above, figures 1, 2, and 5, the passage
being provided with a damper E, having an outer handle F, by which the passage
can be closed when there is no fire in the open fireplace A and the close stove B
only is being used.
The fireplace for the close fire B which is situated beind the open fireplace A,
has two folding perforated doors in front of it, figure 2, which can be opened from
both sides, figure 3.
For lighting the fire, the middle door G, figure 3, is opened, which communicates
with the grate B and when the fire is burning a small crossbarred grate is placed in
front of it.
For keeping up the fire, coal is supplied through the upper door H, whilst the
lower door communicates with the ashbox and can be left partly open for the
supply of the necessary air.
Behind the grate B is arranged a firebrick back, and above the latter a bent pipe K,
conducts the smoke and products of combustion into the chamber D, figures 1, 2,
and 5, which is common to both fires.
The upper end of the pipe K is provided with a moveable damper L, having an
outer handle R, by which the passage can be opened or closed, so that either one or
both fires can be used, as desired.
The smoke and products of combustion rising into the chamber, D, must, before reaching
the pipe Q which leads to the chimney, pass round the two horizontal partitions M, N,
figure 1 and then round the two vertical partitions O and P, as shewn by the arrows
in the drawing.
By these means, the heat contained in them is accumulated in the stove and an
excellent heating effect produced.
This arrangement combines the close fire B with the open fire A, both fires
affording a most perfect utilization of the heat developed by the combustion of
the fuel.
"
•
The simultaneous use of both the open and close fires is only required in
exceptionally cold weather; the open fire A is commonly amply sufficient in which
case the damper L is closed.

page_text: The great value of this invention is, that by the construction described, when the
open fireplace is supplied with lump-coal (not small coal or nuts) the warming effect
is both quicker and stronger than in an ordinary closed stove, with a duration at
least equal to that of the latter.
It should be noted that after the fire has gone out the damper E should be
closed, so that the draught of air through it, is prevented and the heat retained in
the stove.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim, is :-
In stoves, the arrangement of an open fireplace A, in combination with a closed
fireplace B, arranged behind it, having dampers E and L by which the passages C,
and K, conducting the products of combustion to the common chamber D, can be
opened or closed, such products then passing round the horizontal partitions M N
and the vertical ones O, P, and through the pipe Q to the chimney in order to
combine the close fire B with the comfort of the open fire A, both fires affording the
most perfect utilization of the heat developed.
ated this on day of my 100.
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Patentee.