Year: 1896

page_text: Date of Application, 1st Dec., 1896-Accepted, 20th Feb., 1897
A communication by EDOUARD WILHELM MESSMER and GEORG STEPHAN
REINHARDT, both of Flensburg, in the Empire of Germany, Manufacturers.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool and 6, Bank Street,
Manchester both in the County of Lancaster, 118, New Street, Birmingham
in the County of Warwick and 322, High Holborn in the County of Middlesex,
Civil Engineer, 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 the slow combustion or so-called American stoves hitherto employed, the
circulation passages or flues were arranged at the rear side of the stove by means
of a strongly projecting attachment, so that the stove stood forward some
considerable distance from the wall, and therefore required much floor space.
This drawback is removed by the stove which forms the object of the present
invention, as it requires as small a floor space as possible.
In the accompanying drawings:-
Figure 1 is
front vertical section of the improved stove showing the new
arrangement of the circulation passages;
Figure 2 is a transverse vertical section, whilst
Figures 3, 4, 5 & 6 are horizontal sections showing the register in its different
positions.
The smoke gases formed over the grate a are drawn off through the smoke
passage into a flue c and downwards into another flue d, and from there upwards
again in a flue e, and thence into the chimney h, Fig. 2, between the filling hopper f
and the rear wall g of the stove. It must here be noted that the rear wall 9 and
also the front wall I may be provided with mica doors i when the stove is inserted
directly in the wall in order to heat simultaneously two rooms.
The regulating of the stove takes place by means of a single handle in the upper
part of the stove. Between the top plate m and the cover plate n, Figures 1 and 2,
an air chamber o, Figures 3-6, is formed, into which the air for the combustion
enters through openings p (Figures 14 & 2). From this air chamber o the air
passes into a fluer passing from above downwards and through an opening s into
the basket grate a. The carbonic acid gases forming beneath the grate a when
the stove is burning slowly, pass through an opening t opposite the previously
mentioned opening s into a flue u, and pass from below upwards through the plate m
alongside the air chamber o into the chimney h. The valve v, which closes the
flue cat the plate m, serves when open for directly carrying away the smoke
gases.
The mouths of the flues r and u, as well as the flap v, are opened and closed by
means of a single slide or register w, forming two dampers and working on the
plate m. The register
is operated by means of a button and stud guided in a
slot y and projecting to the outside, and the position of the register w can be
always seen on a scale formed on the front plate of the stove, (Figure 1A).
In the position 6 of the register, as shown in Figure 6 in black lines, the air
fluer is entirely closed by means of the register w, and the vapour flue u entirely

page_text: -opened. The carbonic acid gases formed above the grate a pass through the smoke
passage b into the flues c, d, e and finally into the chimney h. The carbonic acid
vapour forming underneath the grate a passes through the opening t and flue u into
the chimney h.
In position 5 of the register (medium draught), as shown in Figure 5, the air
passage is partially opened by means of the register w, and the vapour flue u
-closed. The air for combustion-passes through the Hue.rand openings into the
grate a. A moderately burning fire results therefrom. The gases pass through
the smoke passage b into the flues c, d, e and finally into the chimney h.
In position 4 of the slide, Figure 4, (for a strong draught) the air fluer is
entirely opened by means of thei register w. The circulation of the gas is the
same as in position 5 only to a stronger extent.
In position 3 of the slide, Figures 3 & 1, (a very strong draught) the flap » is
opened by the register.w, in addition to that shown in Figure 4, by a projection k
formed on the régister w engaging under an arm mounted on the spindle of the
valve v, and thus opens the flap. The gases then pass out of the. smoke passage b
through the open flap v directly into the chimney h, and a very strong draught
results.
If the register w be then again moved by means of the knob a towards the
right, the flap falls back by its own weight. If, for instance, too much gas
accumulates above the grate a said flap opens and closes automatically so that any
puffing out or smoking is entirely avoided.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is :-
1. A slow combustion stove having air and vapour passages or flues (r & u)
lying at the sides, and circulation flues (c, d, e) adjacent thereto, characterised by
the opening and closing of the air passage (r) which opens into an air chamber (o),
and of the vapour passage (u) which opens beneath the air chamber, and of a
direct discharge flap (v) arranged in the top plate, being all effected by means of a
single flat-lying slide or register (w), adapted to be moved into different positions
whereby any desired strength of draught may be obtained, which is shown on a
scale arranged in proximity to the handle (x) of the slide (w), substantially as
.herein before set forth.
2. The improved construction of stove taken as a whole, substantially as
described and illustrated.
Date 201
1000
WM. P. THOMPSON & Co.,
Agents.