Improvements in Vapour-burners.
Year: 1895

page_text: Date of Application, 1st Aug.. 1895-Accepted, 28th Sept., 1895
Improvements in Vapour-burners.
A communication from GUSTAV BARTHEL, Chemist, of 72 Blisenwitzerstrasse
Dresden, Saxony, Empire of Germany.
I, ALFRED JULIUS BOULT of 323 High Holborn in the Con ity 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:-
This invention relates to improvements in blue-flame or Bunsen burners for
cooking and heating apparatus, fed with gas-oil, petroleum or spirit, and has for
its object to secure a noiseless burning of the flame, with complete security against
any unexpected extinction of the flame by air-currents or the like.
To this end, a closed burner-head is arranged in the form of a flat, disc-shaped
body, provided with a number of radially arranged channels terminating in a central
hollow, there to take up the vapours conducted thither from below, which they
discharge at the periphery of the disc-shaped body, where these vapours are burnt
in separate blue-flames at the outer end of each of the channels.
By the arrangement of a large number of such channels individually of small
sectional area, with proportionately greater length, it results, that the vapours or
gases, entering the highly heated burner-head, are carried away with great vehemence
through these narrow channels, and consequently only, ignite at the outside of the
burner-head, where, they develop a steady and noiseless blue flame.
A sudden draught or air-current, or the like, which, with other burners of thi
kind, causes an extinction of the flame, or drives the same back into the pipe of the
buruer, has, owing to the numerous channels of individually small areas, no power
to extinguish or drive back the forcibly out-streaming vapours or gases, so as to
cause the flame to strike inwards.
Moreover, with the restricted cross-sectional area of the channels, the formation
of flame therein is rendered practically impossible.
As regards the radiation of heat from the highly heated metallic surface of the
burner-head to the metal of the vapour pipes, several columns of copper or other
good conductor of heat are arranged and enclosed in a jacket in the shape of a
brass tube.
In the accompanying drawings:-
Figure 1 is a vertical section of the improved burner;
Figure 2 an elevation of the same;
Figure 3 a horizontal section through the upper part of the burner as seen from
above; and
Figure 4 shows a similar cross-section taken at a lower part of the burner.
As will be seen from Figures 1 and 3, upon the reservoir a for containing the
liquid fuel, is mounted a vapour tube b in which the liquid fuel (petroleum) which
is raised by a wick (not shown in the drawings) is heated and converted into gas or
vapour in which form it streams forth from the nozzle c. The radiant vapour is
caught up in the upright tube d while the air is sucked in through the encircling
tube and is mixed with the gases or vapour in the hollow space above e, just
below the burner-head. This mixture streams through the radial channels, g
provided in one or more rows, in the outer wall of the burner-head, and arrives
at the periphery of the latter. The flat, projecting plate h above, and the dish-
shaped ring i below, protect the canal-mouths g from direct draughts, and the latter

page_text: causes an upward, slanting or bending deviation in the horizontal direction of the
flames issuing from the burner head all round, so as to cause the flame to assume a
cup form.
As stated, the channels g may be arranged in one or more rows; in the latter
case, the channels of the upper row or rows may be either directly above or
arranged to alternate with those of the lower row or rows.
The burner is carried by columns & of copper or other good conductor of heat
which columns for protection against oxidation from the heat are covered over and
enclosed by brass tubes, and secured to a metal disc screwed on the vapour
tube b.
The pan p on the latter serves to hold the liquid fuel (spirit) ignited to warm
the burner until the vapour has begun to form in the pipe b.
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. In a vapour-burner for petroleum heating and cooking apparatus or the like
the combination of a burner head comprising an annular wall such as provided
with one or more rows of radial channels g with concentrically arranged tubes
such as d d¹ for the purpose of conveying mixed air and hydrocarbon vapour into
the hollow space e inside the burner substantially as described and illustrated in the
accompanying drawings.
2. In a vapour-burner for petroleum heating and cooking apparatus or the like
the employment of columns k of copper or other good heat-conducting metal, for the
purpose of conveying the heat from the burner or burner head to a disc or connecting
piece such as m on the vapour-tube such columns being covered or not with
brass tubes / substantially as and for the purpose described and illustrated in the
accompanying drawings."
3. The combination and arrangement of parts constituting the complete vapour
burner substantially as described and illustrated in the accompanying drawings.
Dated this First day of August 1895.
BOULT & WADE,
Agents for the Applicant.