Improvements in or relating to Vaporising Burners for Soldering- lamps, Soldering-irons, and the like.
Year: 1896

page_text: Date of Application, 23rd May, 1896-Accepted, 5th Sept.. 1896
COMI LULE DI MOITIATION
Improvements in or relating to Vaporising Burners for Soldering-
lamps, Soldering-irons, and the like.
A communication from GUSTAV BARTHEL, of Dresden, Saxony, 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 ascertained
in and by the following statement :-
The object of the present invention is an arrangement for supplying and
vaporising fuel, such as petroleum, benzine and other liquid hydro-carbons in
soldering-lamps, soldering irons and the like.
In such tools there is always present the drawback as is well known that the
wick one end of which serves for vaporising the liquid fuel easily becomes charred
and dirty at that end, whereby the proper working of the apparatus is interrupted.
If instead of ordinary wicks some incombustible material is used, such as wire
gauze or the like, then one drawback is certainly remedied, but its place is taken
by another which is that when during working, the soldering-iron is turned about,
the fuel-reservoir comes at times in such an inclined position, that the supply or
vaporising tube emerges outside the liquid level in consequence of which the
compressed air escapes from the fuel-reservoir into the vaporising part and so
extinguishes the flame.
The present invention relates to an arrangement by which an abundant supply of
fuel from the wick to the vaporising part is effected and the air prevented from
blowing through. For this purpose the upper end of the wick is placed in a neck,
which is reduced in its middle part so that it strongly compresses the wick. In
consequence of the reduced cross-section, the liquid fuel collects in that place and
is injected into the vaporising part by the excess of pressure in the reservoir.
The position of the soldering-irons is of no importance, as the free end of the wick
always falls into the place where the liquid is.
Instead of using a special screwed neck with a "waist" the compression of the
wick can be effected in other ways, as for instance by reducing the section of the
vaporising tube in its lower part or decreasing this section by inserting a ring.
The vaporising part consists of a pipe with double walls, the interior being filled by
a twisted wire-netting or the like (Fig. 2).
In order to be able to heat the inner vaporising chamber highly and to decrease
the heat-transmission to the walls of the fuel-reservoir without being obliged to
place the vaporising chamber too far away from the said reservoir, there is no
direct metallic connection of the inner tube and the contracted neck c with the
fuel-reservoir for said inner tube is enclosed in a jacket or mantle, consisting of
another tube of larger diameter, so that this second outer tube touches the inner
tube only along a narrow annular surface at its two reduced ends an insulating
intermediate space remaining between the walls of the two tubes. The fuel-
reservoir and the other parts are only in metallic connection with the outer tube,
the inner tube being placed into the outer one without being soldered to it.
In the accompanying drawing
hi nonscents a coldering iron according to this invention.

page_text: Fig. 2 shows the neck with the wick pressed in and the vaporising tube with the
insulating mantle and
Fig. 3 shows a soldering-lamp with a similar arrangement.
In the soldering-iron Fig. 1 the handle a serves at the same time as a fuel-
reservoir, into which enters the vaporising tube b with the neck c screwed on to it,
the insulating tube d being connected to the handle a by any suitable device. The
inner vaporising tube filled with the wire netting f carries at one end a conical
nozzle g the flame of which strikes against the iron h, the latter being carried by a
support & secured to the tube by a ring d. The nozzle g is brought by the flame
to red heat and transmits the heat directly to the inner vaporising tube band to
the wire netting f, the outer tube d and the handle a. remaining so cool, that the
latter can be held in the hand without further protection.
The air-pressure may be obtained by delivering air into the reservoir from a
foot-blower through a flexible connection, or may be obtained in any other
convenient way.
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. An arrangement for supplying and vaporising liquid fuel in soldering-irons,
soldering-lamps and the like, characterised by a vaporising tube b reduced in its
lower part in which the wick is strongly compressed in order that the liquid fuel
shall be forced into the upper part of the vaporising tube by the aid of the
pressure in the fuel réservoir without allowing the air to pass through.
Dated this 23rd day of May 1896.
BOULT & WADE,
Agents for the Applicant.