An Improved Incandescent Wick Burner for Liquid Fuel.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
An Improved Incandescent Wick Burner for Liquid Fuel.
I, JOHANNES SPIEL, of Thurmstrasse 85, Berlin, in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to a wick burner for liquid fuel for the purpose of pro-
ducing a Bunsen flame appropriate for incandescent light and especially com-
prises arrangements for effecting a thorough mixing of the air for combustion
with the combustible vapors, regulation of the admission of the air for combustion
and easy ignition of the Bunsen flame.
An exterior burner cap is connected with the fixed burner crown or gallery,
which lets the combustion air enter; this cap projects inwards on the top so far,
that it extends over the wick surface nearly to the central wick tube, so that the
combustion air rising outwardly of the wick tube, is forced to pass entirely over
the wick, in order to arrive at the narrow passage between the burner disk and the
cap during which passage the air meets the vapors passing vertically to this
passage and is mixed thoroughly with these vapors.
In order to guide the horizontal air current more securely over the wick surface
the outer wick tube is made a little higher at its upper enlarged part, or at this
place there is used a prolongation piece slid thereover, which part reaches nearer
to the burner cap in order to give to the combustion air the above mentioned
horizontal direction.
In order to be able to adjust the distance between the upper edge of the
exterior wick tube or of its prolongation piece from the inner surface of the burner
cap to close the exterior air outlet completely or nearly so and for putting out the
Bunsen flame, there may be used one of the known lifting devices, for raising
either the exterior wick tube from its position or the prolongation piece thereon
For
s that this part reaches with its upper edge to or nearly to the burner cap.
the first named purpose these parts can be lifted correspondingly far, in order to
regulate the passage space for the combustion air between the wick surface and the
burner cap.
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An Improved Incandescent Wick Burner for Liquid Fuel.
I, JOHANNES SPIEL, of 85, Thurmstrasse, Berlin, in the Empire of Germany,
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 a wick burner for liquid fuel for the purpose of pro-

page_text: ducing a Bunsen flame appropriate for incandescent light in which there is effected
a thorough mixture of the vaporized fuel with the air admitted between an
exteriorly placed burner cap and the exterior wick tube in such a manner, that by
means of the adjustable arrangement of this exterior wick tube or of an adjustable
ring provided at the upper end of the same the air current is guided across the
developed fuel vapor and wherein the upper border of the wick tube or of the
ing on the latter projects above the wick and the border of the cap is carried
inwards so far that it extends to a position about in alignment with the inner
wick tube. The air current is thus guided inwards at the upper part in a rect-
angular manner and caused to penetrate the gas current, whilst the gas and air
mixture producing the blue flame escapes through the narrow annular space
between the drawn in burner cap and the burner disk.
The annexed drawing shows the cross sections of two forms of construction of
such burner, Figs. 1 and 2 showing a prolonged exterior wick tube and Figs. 3
and 4 a ring arranged around the upper end of the wick tube.
The exterior burner cap c is not displaceable in direction of its height, its upper
border is turned in so far, that the width of the hole formed by it corresponds
about with the open width of the wick ar inner wick tube.
The exterior wick tube a in Figs. 1 and 2 is adjustable in direction of its height
and widened a little at the upper end. By displacing the tube a the space
between the upper edge of the widening e and the inner surface of the cap c can
be adjusted in such a manner that the air current passing upwards between the
wick tube a and the cap c is abruptly deflected over the edge of the part cand
mingles with the combustible gases developed by the wick forcing itself into
intimate mixture by means of the tension produced in consequence of the narrowing
of the annular chamber and thus producing a pure blue flame.
In order to facilitate the lighting of the wick and the formation of the Bunsen,
flame, the wick tube a (Fig. 2) can be lifted so far, that the upper border of the
wick tube widening e nearly touches the cap c after which by readjusting the
wick tube the passage for the air, and thus also the flame can be regulated.
Figs. 3 and 4 show a form of construction, in which not the whole exterior
wick tube, but only a ring arranged at the upper end of the same is adjustable
in direction of its height.
The wick tube or the ring on the latter can be adjusted in any suitable
manner, for instance by providing screw threads, a lever gear or the like.
Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed I declare that what
I claim is:
1. An improved Bunsen flame wick burner for liquid fuel wherein the exterior
wick tube is adjustable in regard to the exterior burner cap c the latter being
contracted to a width equivalent to the open width of the wick, so that the air
drawn in between the wick tube a and the cap c is carried crosswise into the
rising combustible gas current.
2. A form of construction of the wick burner described in Claim 1, in which
instead of rendering the exterior wick tube a displaceable a ring b is displaceable
vertically on the latter and is adjustable with regard to the exterior burner cap c
which is contracted above the wick substantially as described.
Dated this 18th ex of Walum 1000
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, London.