Improvements in or relating to Oil Stoves.
Year: 1896

page_text: Date of Application, 21st Feb., 189 -Acc pted, 21st Mar., 1896.
COMPLETE SPECIFICATION.
Improvements in or relating to Oil Stoves.
A communication from GUSTAV BARTHEL, Chemist, in Dresden-Striesen, Empire of
Germany.
I ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent, 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:-
The present invention relates to an apparatus for cooking or the like, heated by
petroleum or other hydrocarbon or inflammable liquid, in which apparatus the oil
is placed under pressure by compressing the oil reservoir so that the compressed
air therein forces the oil through a rising" pipe to the place where it is
vaporised or gasified. In this way the air pump used hitherto for producing the
pressure, becomes superfluous and at the sanie time the flame can be regulated by
more or less strong compression of the reservoir.
To enable the oil reservoir to be compressed, it is made in the present case
with two bellows-shaped parts, connected to each other, the walls being corrugated.
At the lower part is fixed a well down into which the rising pipe descends and
which can be raised or lowered by turning a nut, which can rotate but cannot
move longitudinally and engages with a screw on the exterior of the well.
greater convenience of turning the nut, it is provided with a milled washer.
In the accompanying drawings;
For
Fig. I is a side elevation partly in section of an improved stove constructed
according to this invention in a position of rest.
Fig. 2 is a portion of Fig. 1, but showing the parts of the stove in the working
position.
Fig. 3 is a part plan of the stove and
Fig. is a separate vertical central section of the well aforesaid.
a a are the two bellows-shaped parts of the reservoir, the walls of which are
partly or completely corrugated, is the "rising" or delivery pipe passing through
them, which on its top end has the burner c and the heating cup d, whereas its lower
end enters into the well e, which latter is closed at its bottom and fixed in the
part a' of the reservoir.
The well is encircled with and engaged by a nut g, which can turn, but is not
movable, otherwise in the frame and which has on its upper end a washer / milled at
its edge '. In the feet of the frame fare fixed columns which carry at the top the
grid for supporting cooking utensils.
The apparatus is manipulated as follows;-
At first spirit or the like is poured into the heating cup d and ignited, in order
to warm the burner and to start the vaporisation of petroleum. Then by turning the
washer the well e is raised. In consequence of that the parts a a' (of the
reservoir are compressed (Fig. 2) thereby compressing the air over the oil in
consequence of the diminution of the space in the upper part a, and the oil is
forced up the pipe & so that it rises into the vaporising chamber of the burner c.
The gases or vapours developed there burn with a small blue flame without any
perceptible noise, have a great heating power (being blue) and deposit no soot on
the cooking utensils.
By decreasing the air pressure in the reservoir a
by turning the washer / back

page_text: more or less and consequently by lowering the shaft e, the size and therefore the
heating power of the crown of flame at the burner-head can be diminished;
by turning it in the opposite direction the power of the flame can be again
increased.
Having now particularly described and ascertained the nature of the said
invention 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. An apparatus for cooking or heating by means of vaporised oil or some other.
inflammable liquid characterised by the arrangement of a compressible oil reservoir
such as a a' in combination with a screw or other device for compressing the
reservoir, in order to compress the air by decreasing the volume of the oil
reservoir and to force the oil through a pipe such as to the burner substantially
as described.
2. The combination and arrangements of parts constituting a complete oil stove
substantially as and for the purpose described and illustrated in the accompanying
drawings.
Dated this 21st day of February 1896.
BOULT & WADE,
Agents for the Applicant.