An Uninflammable Burner or Wick Cap for Liquid Fuel.
Year: 1896

page_text: Date of Application, 7th Jan., 1896-Accepted, 8th Feb., 1896
COMPLETE SPECIFICATION.
An Uninflammable Burner or Wick Cap for Liquid Fuel.
I, CARL BOURBOTT, of 56 Wilsnackerstrasse, Berlin, in the Empire of Germany,
Former-master, 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 object of the present invention is an uninflammable adjustable burner piece
or wick cap for liquid fuel, which besides economising the suction wick and
facilitating the extinguishing of the lamp, causes also a reduction into gas of the
liquid fuel conducted upwards through the suction wick, this reduction coming to
full effect, as soon as the wick cap and the upper part of the burner are sufficiently
warmed.
In the annexed drawings Figs. 1-4 show the application of this invention to an
annular burner. Figs. 5-7 show its application to a flat burner.
The wick cap A cousists (Figs. 2-3) of an annular metal piece which is
surrounded with asbestos e as thick as the width of space d between burner tube b
and the wick tube c. The connection between burner and wick cap is effected by
a spring which is fixed at one end to a bridge or uave g of the wick cap A,
and at the other side to a bridge in the wick tube c. The fixing is effected in
such a manner that on upward feed of the suction wick i, the latter will meet the
wick cap A which during the combustion is heated by the inner metal core and
will also on further feed lift the wick cap which causes an increase of the light
owing to the larger surface of the wick cap thus exposed.
The operation of the wick cap us far as it produces a reduction into gas of liquid
fuel is as follows:-
When the suction wick i is in the position shown in Fig. 1 in which the suction
wick i touches the asbestos e, the liquid combustible carried upwards through the
suction wick is received by the asbestos ring and comes to direct combustion, the
ring a surrounded with asbestos as well as the upper parts of the wick and
the burner tube bare thus heated and by the heat of the metal ring a the liquid.
fuel is converted into gas.
The extinguishing of the lamp is effected by lowering the suction wick i until
between the asbestos ring e and the suction wick i there exists a space (Fig. 2).
which does not allow a further feeding of fuel to the asbestos ring in consequence
of which the lamp will be automatically extinguished after a short time.
By the use of the new wick cap a regular burning of the lamp is secured
because a trimming of the suction wick which often causes an irregular burning
of a lamp is rendered unnecessary and the wick cap itself is durable and preserves
its regular form.
Figs. 5 and 6 show the application of the invention to a flat burner. Here the
metal piece consists of a T shaped flat rail a' the lugs gl of which are joined with
the lugs of the burner tube 61 by springs. The flat rail a' is also surrounded
with asbestos e' as thick as the width of the inner hollow space of the burner tube b¹
(Fig. 5). The purpose and the effect of this rectangular wick cap is the same as
described hereinbefore for the annular wick.
In both forms the springs for fare not absolutely necessary for the effect of
the burner is the same without it.
The new wick cap of whatever form it is can also be applied in heating lamps
with very great advantage because by the reduction into gas the unpleasant odour
hitherto unavoidable in petroleum burners is obviated.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. An uninflammable wick cap for burning liquid fuel, having an annular metal
core surrounded with asbestos which is fitted in or on the wick tube for the purpose
of combustion of the fuel, transferred through the suction wick to the asbestos and
reduced into gas by the warmth given by the heated metal core and whereby also the
size of the flame is regulated according to the height of the suction wick and its
extinguishing is effected automatically by lowering the suction wick or severing it
from the wick cap.
2. A wick cap as in Claim 1 having a rectangular form adapted for flat
burners, comprising the metal piece consisting of a T shaped rail and its asbestos
covering.
Dated this 7th day of January 1896
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, W.C
Agents to Applicant.