Improvements in or relating to Bunsen Burners for Burning Petroleum and other Hydrocarbons
Year: 1897

page_text: Date of Application, 11th Nov., 1897-Accepted, 11th Dec., 1897
COMPLETE SPECIFICATION.
"Improvements in or relating to Bunsen Burners for Burning
Petroleum and other Hydrocarbons."
(A communication from GUSTAV BARTHEL, of 27 Kyffhäuserstrasse, Dresden-
Striesen, in the Empire of Germany, Chemist).
I, ALFRED JULIUS BOULT, of 111 Hatton Garden, 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 ascer-
tained in and by the following statement:-
--
This invention relates to a device for Bunsen burners, especially for soldering-
lamps which burn petroleum or other hydrocarbons, for the indirect transmission
of heat to the vapourizer and for maintaining a flame in the burner-tube. For
this purpose there are arranged on the inner surface of the annular vapouriser
long projections or teeth at small distances apart projecting so far towards the
reire that a free central opening is left which is very small in comparison with
the inner diameter of the annular vapouriser.
It is a well known drawback that strong deposits of graphite are formed when
petroleum is vapourised, said deposits increasing as the vapouriser becomes hotter,
and that the flame which is formed only at the outer edge or point of the burner-
tube can be easily blown out.
This invention obviates both the above drawbacks and enables petroleum to be
used in soldering and similar lamps of the simplest construction.
In the accompanying drawing a burner is shown in Figure 1 in a horizontal
position in longitudinal section and in Figure 2 in a vertical position in eleva-
tion, Figure 3 being a separate view of the annular vapouriser with its teeth in
front elevation, Figures 4 to 7 being cross-sections of said vapouriser illustrat-
ing different forms of the projections or teeth.
The
The apparatus is substantially arranged in the well known manner.
petroleum in the reservoir is maintained under pressure by means of an air-
pump not shown in the drawing-arranged in the reservoir and forced into the
burner through the pipe b. This supply pipe b is provided with a closing device-
not shown in the drawing-of any well known kind. In the front part of the
burner tube is placed the annular vapourizer d into which the supply-pipe b
enters and from which the gases or vapours generated pass through the tube or
passage e into the rear part of the burner tube c where they escape through a
nozzle and enter the short pipe e after becoming mixed with the air entering
through openings c' in the burner tube c. This gas-mixture flowing with a great speed
strikes at the other end of the pipe e¹ against the inwardly projecting teeth f
of the vapourizer which form a large area and become strongly heated when the
lamp is alight so that the flame is formed inside at this point and is kept at the
centre by the teeth f. As it leaves the conical portion g the flame is so dense
and strong that it cannot be extinguished even by a strong draught.
The projections or teeth f absorb first the radiating heat of the flame and
transmit it to the annular vapouriser d so that in this way although the teeth

page_text: themselves become red-hot, an excessive heating of the annular vapourised and
of the oil vapourized therein is prevented.
The shape and the arrangement of the projections or teeth may vary consider-
ably without departing from the spirit of this invention.
Having now particularly described and ascertained the nature of this 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 bunsen burner for burning petroleum and other hydrocarbons a device
for transmitting the heat to the annular vapourizer and maintaining the flame
within the burner tube characterized by projections or teeth as f arranged on the
inner surface of the vapourizing ring as in the burner tube and projecting
towards the centre said teeth being arranged at short distances apart and leaving
a comparatively small free central passage substantially as described.
2. Vapourising rings for bunsen burners of the character described substanti-
ally as described and illustrated in Figures 3, or 4 or 5 or 6 or 7 of the accompany-
ing drawings.
3. The combination and arrangement of parts constituting the complete bunsen
burner for burning petroleum and other hydrocarbons substantially as described
and illustrated in Figure 1 the accompanying drawings.
Dated this 11th day of Navamber 1807
BOULT & WADE
Agents for the Applicant.