Improvements in Stoves.
Year: 1891

page_text: CUMIT DEM DE MULTICATION.
Improvements in Stoves.
A communication from abroad by HUBERT MERZENICH, of Biebrich-on-the-
Rhine, in the Province of Hesse-Nassau and Kingdom of Prussia,
Manufacturer.
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 and 323 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 :-
This invention has for its object (inter alia) an adjustable heating stove, the
special construction of which renders it possible to obtain great heating power, to
avoid any direct radiation of the heat from the fire box, and to communicate to the
room a warmth completely charged with moisture, which is of inestimable value
from a hygienic point of view. Further, by means of the peculiarly constructed
movable grate, the ashes can be easily reinoved and a constant uninterrupted
draught can be produced in the stove. Whilst, in other modes of construction, the
saturation of the warm air with moisture is only a partial one, in this stove, no warm
air can escape from the same without being completely saturated with aqueous
vapour or steam, as it must traverse the chamber wherein the water receptacle is
situated before it can arrive at the exit.
A
As shown on the accompanying drawings, the stove consists of an inner part or
cylinder a (Figures 1, 2 and 3) serving as a fire chamber, which is closed above by
a saucer-like top and is provided with a vent pipe for carrying off the products
of combustion. The lower half of the fire space is provided with an annular
recess d, filled or lined with fire brick in such a way that the fire space is always
completely smooth and equal inside, whereby a rapid wearing away of the fire-brick
is obviated. A front door with a handle is provided, which is placed in an
opening o in the fire chamber a aforesaid. double adjustable grate, Figure 4,
is placed in the bottom part of the fire space.
It consists of a ring-shaped upper
grate with cross bars and guide projections and the lower fork-shaped grate m,
the middle fire-bar m' of which is adjustably mounted in the projectious kk.
drawing out the lower fork-shaped grate m, the ashes can be easily removed from
beneath, and also the draught of the stove can be regulated at will. Further, the
whole double grate which rests in the ring can be easily turned or shaken as
far as the opening o in the fire chamber a allows, thus causing the ashes to fall
through.
By
An outer casing p is placed round the stove and this is closed at the bottom and
is provided at the top with a removable cover pl.
The openings made all round at the bottom serve for admitting cold air, which,
after being heated and charged with moisture from the water, escapes into the room
through the upper openings
On the dish-like top of the fire space, a suitable vessel containing water is
placed, and the rising warm air is compelled, by the baffle plate s shutting off direct
access from the intermediate space to the openings, to pass through the
chamber in which the water vessel is placed, to pass over the water and to absorb
and carry with it the steam developed therefrom.
As the air of the room only enters below through an opening into the stove, the
air next the floor is drawn into motion and a speedier heating of the floor takes
place than is the case with the present stoves with which the lower layers of air
remain much more undisturbed and are therefore not so easily warmed.

page_text: Figure 5 of the drawing shows a similar heating stove. The cold air from the
room, as in the other example, passes through the openings in the outer casing
into the chamber p², rising upwards it is there heated and is forced, by means of the
baffle plates, to make its way over the water receiver, so that it is charged with
moisture and escapes through the openings into the room.
This valve
The short tube of the fire space a which opens into the tube of the outer
case P is closed by a valve al for the purpose of consuming the gases.
which resembles an ordinary throttle valve (Figures 6 and 7) and is provided in
the middle with an opening about 25 millimetres in size, is not made quite circular,
but in one half is of somewhat smaller diameter, corresponding to the inner diameter
of the short tube, and in the other half of somewhat larger diameter than the
outer diameter of this same tube. The spindle k on which the valve a turns, is
mounted in the tube c', in such a way that, on the valve assuming a vertical position,
its larger half tits closely on the face of the tube, more than covering one half of
the same, whilst the smaller half, corresponding exactly to the inner diameter,
completely closes the remaining space.
When the valve a' is turned into a horizontal position, the smaller half of it
projects into the interior of the tube 6, as shown by the dotted lines. Figure 7.
:
When the valve is used, it is first placed in a horizontal position, (see dotted
lines, Figure 7), heated by the direct draught and then closed (Figures 6 and 7).
All the products of combustion which, otherwise, would pass away unconsumed up
the chimney, are now ignited at the heated valve and are completely burnt inside the
stove or in the pipe, so that no inflammable gas, but only products of combustion
escape through the opening e of the valve.
The valve may be of other suitable construction, if desired.
By the use of this valve, the unconsumed products of combustion, escaping from
the stove into the chimney, are ignited and consumed, and a complete utilisation of
the fuel is obtained.
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 correspondent, I declare that what I claim is.
—
1. An adjustable heating stove, having the combination of the fire chamber a
provided with firebrick walls d, the top plate 6, the double revolving and adjustable
grate, the outer casing or shell p with its openings, the baffle plates covering
the chamber and the removable cover p', substantially as described.
2. In combination with adjustable heating stoves with double walls, a valve a
located in the short pipe c' of the outer casing p, having an aperture e to allow of
the escape of the products of combustion, the said valve being capable of closing or
nearly closing the outlet of the inner pipe, whereby the unburnt gases escaping
from the fire space are ignited and consumed, thereby obtaining a complete
utilisation of the fuel, substantially as described.
3. The herein described arrangement of parts forming the improved heating
stove, substantially as set forth.
Dated this 13th day of April 1891.
WM. P. THOMPSON & Co.,
Agent for the Applicant.