Improvements in Vapour-burners for Cooking Stoves.
Year: 1897

page_text: Date of Application, 5th Jan., 1897-Accepted, 27th Mar.,
1897
COMPLETE SPECIFICATION.
Improvements in Vapour-burners for Cooking Stoves.
I, ARVID BÖHLMARK, of No. 21 Hogbergsgatan Stockholm, in the Kingdom of
Sweden, Manufacturer, 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 relates to an arrangement of burners for such cooking stoves, in
which the oil is vaporized, before it arrives at the burner opening and has for its
purpose to reduce as much as possible the noise or hissing sound, which, as well
known, arises in all the constructions of oil stoves of the said type.
The hissing sound arises when the gas is ignited, the gas then heated but mingled
only with a small quantity of air being suddenly mixed with cold air and thereby
arises, in addition to the above mentioned inconvenience also the inconvenience that
the petroleum gas is not completely burned.
If instead hereof, the gas is, immediately before the ignition of the same, well mixed
with heated air, and the air and gas composition is then still further heated, a complete
combustion is attained without smoke and without the above mentioned disagreeable
sound.
This object is effected with the burner forming the subject of the present invention.
The said invention is illustrated in the accompanying drawing arranged in two
different ways.
Figure 1 shows a burner provided with the new arrangement in vertical section.
Figure 2 is a plan of the same partially in section, and
Figures 3 to 6 show a modification.
a is a cylinder introduced above. the burner tubes, soldered to the inside of the
crown or disc b. The cylinder a has a horizontal partition c, from which projects a
cylindrical tube d open at its lower end, the opening of which is situated somewhat
above the burner opening e. In the cylinder jacket is a number of small openings,
which as shown on the drawing may be made rectangular and be arranged inclined to
the horizontal plane. The upper end of the cylinder is closed by a cover g at the
periphery of which there is a number of small openings h, arranged as shown by the
drawing. Within the cylinder a arranged a conical shell i.
The arrangement operates in the following manner. The gas, flowing out through
the opening e enters immediately the tube d. There the air is already heated, the
vaporizing tubes surrounding the tube, and the gas will thus at the beginning come
into contact with hot air. The gas- and air mixture flows further up in the cylinder
where however it can expand but very little and is conducted further by the conical
shell to the upper cover g and is further heated thereby. The same is during the
combustion heated to a red heat by the small flames, which are passing out through
the openings at its edge. Thus the air- and gas mixture is subjected to a second
heating at the same time the mixture is more intimate, and when it then passes out
through the openings of the cylinder it is burned completely and noiseless. The flame
will then become quite calm and even at the greatest pressure in the oil receiver no
liquid petroleum will spurt out through the burner, but must before it arrives at the
said burner be completely vaporized.
A modification of the above described arrangement is shown in Figures 3–6 of

page_text: the drawings. It is different from the above described arrangement only in that the
cylinder a with tube is removable (Figure 5). For this reason there is arranged a
special partition c¹ soldered to the crown b and on this partition the bottom of the
cylinder a is adapted to rest. The said partition c¹ is provided with a ferrule in which
is fitted the tube d. The operation of this modified arrangement is the same as that
above described.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what
I claim is :-
In burners for oil stoves in which the gas passing out from the vaporizing chamber
enters through the lower bottom to a cylinder, from which it passes through openings
in the cylindrical jacket, the arrangement, in which such openings are also arranged
in the upper cover (g) of the cylinder, while on the lower partition (c) of the cylinder
rests a shell (i), tapering towards the cover, all in order that the flames from the cover
may heat the same, and the gas mixed with air while passing to the cylinder may be
conducted by the shell (i) towards the hot cover (y) so that the composition may be
completely vaporized before passing out and being ignited.
Dated this 5th day of January 1897.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.