Improvements in Domestic Heating Stoves.
Year: 1896

page_text: Date of Application, 17th Feb., 1896
Complete Specification Left, 7th Nov., 1896-Accepted, 2nd Jan., 1897
PROVISIONAL SPECIFICATION.
Improvements in Domestic Heating Stoves.
I, PETER JENSEN of 77 Chancery Lane, London Chartered Patent Agent, do
hereby declare the nature of this invention, a communication from Emil Harzer
of Almahütte near the Ilse Mine 7 Niederlausitz Silecia, Germany, Blast Furnace
Manager, to be as follows:-
This invention refers to domestic heating stoves in which the gaseous products
of combustion are rekindled or ignited before escaping from the stove to the
chimney flue. This is effected by admitting the said products into a hollow vessel
closed at its further end and provided with outlet perforations which increase in
size from the other or inlet end. This vessel is surrounded by an outer mantle
with an intermediate annular space between the two and the mantle near said inlet
communicates with the chimney flue so that the escaping gases are compelled to
sweep past the narrowest perforations whereby a sucking action is produced upon
these latter. Provided that the grate is sufficiently near the inlet opening of the
hollow inner vessel, narrow flames will issue from the narrowest perforations and
rekindle the escaping gases which sweep past them.
In one form the grate is arranged in the lower part of the stove. The space
immediately above it is of part sperical form and is continued up into a hollow
cylindrical vessel closed half spherically at the top and provided with a number
of small holes which increase in size, towards the top of the vessel. This vessel is
surrounded by an outer mantle with an intermediate annular space between the
two and the outer mantle with its bottom edge rests on the sheet metal covering of
the lower brickwork part of the stove. The mantle is closed at the top and may
be made in ring parts fitting into intermediate H shaped ring sockets or into each
other. From the annular space between the inner vessel and the mantle small
flues lead down to the chimney flue.
Dated this 17th day of February 1906
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.
Improvements in Domestic Heating Stoves.
1, PETER JENSEN of 77 Chancery Lane, London, Chartered Patent Agent do
hereby declare the nature of this invention a communication to me from abroad
by Emil Harzer of Almahütte near the Ilse Mine 7 Niederlausitz Silecia
Germany, Blast Furnace Manager, and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement :-
This invention refers to domestic heating stoves in which the gaseous products
of combustion are rekindled or ignited before escaping from the stove to the

page_text: chimney flue. This is effected by admitting the said products into a hollow vessel
closed at its further end and provided with outlet perforations which increase in
size from the other or inlet end. This vessel is surrounded by an outer mantle
with an intermediate annular space between the two and the mantle near said inlet
communicates with the chimney flue so that the escaping gases are compelled to
sweep past the narrowest perforations whereby a sucking action is produced upon
these latter. Provided that the grate is sufficiently near the inlet opening of the
hollow inner vessel, narrow flames will issue from the narrowest perforations and
rekindle the escaping gases which sweep past them.
In one form illustrated by a vertical sectional view, the grate a is arranged in
the lower brickwork part or foundation pier A of the stove. The space b
immediately above it is of part spherical form and is continued up into a hollow
cylindrical vessel d closed half spherically at the top and provided with a number
of small holes c which increase in size towards the top of the vessel. This vessel d
is surrounded by an outer mantle e with an intermediate annular space between
the two. The outer mantle e with its bottom edge d¹ rests on the sheet metal
covering of the lower brickwork part A of the stove. The mantle is closed
at the top and may as shown be made in ring parts fitting into intermediate
H shaped rings e' or into each other by spigot and faucet joints. The cylinder d
may sometimes be made with gradually reduced diameter towards the top. From
the annular space between the inner vessel d and the mantle e small flues g lead
down to the space h and chimney flue i.
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondent and in what manner
the same is to be performed I declare that what I claim is.
1. Domestic heating stove in which a vessel closed at top communicating with
the space over the grate and having perforations c increasing in size towards the
top, is surrounded at a little distance by a mantle which at or near the lowest
perforations communicates with a flue for the escaping gases all so arranged that
the gases are rekindled in passing the lowest perforations by flames issuing there-
from substantially as set forth.
2. The construction of domestic heating stove shown on the drawing.
Dated this Seventh day of November 1906
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.