AN IMPROVED VAPOUR LAMP FOR USE WITH INCANDESCENT MANTLES
Year: 1886

page_text: I STEFAN SIEMANG of the City of Vienna in the Empire of Austria, First
Lieutenant of Artillery, do hereby declare the nature of my Invention for AN
IMPROVED VAPOUR LAMP FOR USE WITH INCANDESCENT MANTLES," to be as follows:-
My invention relates to a safety gasifying lamp which can be employed in
combination with the incandescent burner invented by Dr. Carl Auer von Wels-
bach and consists in the construction of a gasoline, ligroine or other hydro-
carbon or spirit lamp in which gas or vapor is produced which when ignited
will in itself not serve as illuminating light but which evolves such an inten-
sive heat that the incandescent body invented by Dr. Carl Auer von Welsbach
is caused to glow or become incandescent and give a beautiful white light.
My improved lamp consists substantially of a reservoir or vase for the recep-
tion of the hydrocarbon or other fluid in which latter a wick-sheath projects
for carrying and holding the requisite wick.
This wick sheath passes through a casing with perforations and carries at its
one end a metallic cap which is provided with a conical opening which can be
closed by means of a regulating screw and also with a very fine gas outlet.
The regulating screw is kept out of contact with the wick by means of a
helical spring placed around the said regulating screw. Two tubes branch off
from the perforated casing one of which carries the burner ring and incandes-
cent tip or mantle and each of which is provided with two air inlet ports.
The reservoir or vase is at that part where the regulating screw runs through
the wall of the same provided with a suitable bushing and at the upper surface with
a.charging opening which is closed by a stopper perforated in the centre, the
cap of which is arranged to act as safety valve. The stopper is screwed into the
lateral charging opening of the reservoir or vase so that by freeing the cap
which is provided with two excentrical borings any superfluous gas in the reser-
voir or vase can be allowed to escape or an automatic valve stopper can be
employed the valve of which will be opened when the pressure of the gases
have reached a predetermined height and will be closed by means of a suitable
spiral or helical spring as soon as the pressure in the reservoir is decreased.

page_text: According to this mode of construction I have located the gasifying device
within the reservoir or vase laterally of the centre of the same but I also make
such said lamps with the gasifying device applied centrally to the upper sur-
face of the reservoir or vase and replace the regulating screw by an ordinary
stop cock. I also employ a sheet metal mantle surrounding the spirit cup or
compartment which not only protects the spirits of wine employed for produc-
ing the first gas but avoids all danger of fire.
The sheath or tube which surrounds the wick both inside and outside reaches
nearly to the bottom of the reservoir and is attached to the same by means of
suitable screw threads.
The gases formed in the reservoir are excluded by this sheath and thus ren-
dered harmless whereas the gases produced by the gasification of the fluid in
the wick ascend and are consumed.
A suitable cup or dish serves to receive the spirit or alcohol which is ignited,
so as to warm the tube or wick sheath and produce the gasification of the fluid
in the wick. Instead of screwing the burner into the reservoir the said parts
can be attached by a bayonet catch.
According to a further modification of my invention the tube or sheathing
which surrounds the wick is fixed to the bottom of the reservoir and over which
a second tube is arranged which carries the perforated casing to which latter a
tube which carries the burner and the incandescent body is fixed.
The outer tube surrounding the wick also carries the dish or cup for the
alcohol or spirits of wine and forms at the same time a part of the bayonet catch.
The same is provided exteriorly with two small pieces of metal and two slots
arranged diametrically opposite to the said pieces of metal. The hooks on the
ring of the reservoir gear into these slots so that if the cup or dish is placed on
the reservoir and is given a partial rotation the attachment between burner
and reservoir will be completed.
To the upper ring of the vase or reservoir I also attach a cup like part with a
tube running nearly to the bottom of the reservoir so that all escape of fluid
from the reservoir is rendered. impossible. If the lamp should be upset the
fluid between the tube last mentioned and the wick sheath is prevented from
escaping by a suitable cap and tube. Air is supplied to the burner by a tube
opening up into the burner but can be cut off by means of a suitable device.
Dated this 18th day of June 1886.
ALLISON BROS.,
Agents for the Applicant.

page_text: 1
COMPLETE SPECIFICATION.
An Improved Vapour Lamp for Use with Incandescent Mantles.
1, STEFAN SIEMANG, of the City of Vienna in the Empire of Austria, First
Lieutenant of Artillery, do hereby declare the nature of my invention and in
what manner the same is to be performed, to be particularly described in and
ascertained by the following statement:-
My invention relates to a safety gasifying lamp which can be employed in
combination with the incandescent burner invented by Dr. Carl Auer von
Welsbach and consists in the construction of a gasoline, ligroine or other hydro-
carbon or spirit lamp in which gas or vapour is produced which when ignited
will in itself not serve as illuminating light, but which evolves such an intensive
heat that the incandescent body invented by Dr. Carl Auer von Welsbach is
caused to glow or become incandescent and give a beautiful white light, and
in order to avoid all danger of explosion, which might occur with such said
gasifying apparatus, I provide the same with a safety device.
Figure 1 is the vertical section of my improved lamp with the wick sheath in
horizontal position.
Figure 2 and 3 represent two modifications of my said improved lamp the
wick tube or sheath being arranged vertically.
Figures 4 and 5 are vertical sections of the safety plugs or valves.
Two
My improved lamp consists substantially of a reservoir or vase G for the
reception of the hydro-carbon or other fluid, in which latter a wick sheath R
projects for carrying and holding the requisite wick d. This wick sheath R
passes through a casing or chamber C with very fine perforations and carries
at its one end a metallic cap which is provided with a conical opening o',
which can be closed by means of a regulating screw and also with a very
fine gas outlet o. The regulating screw is kept out of contact with the wick
by means of a helical spring t placed around the said regulating screw r.
tubes y, k, arranged one around the other branch off at n, from the perforated
casing C of which the interior tube y carries the burner ring and tip and the
incandescent cylinder or mantle and each of which is provided with two air
inlet ports o. The reservoir or vase G is at that part, where the regulating
screw runs through the wall of the same provided with a suitable bushing
and at the upper surface with a charging opening C, which is closed by a
stopper perforated in the centre, the cap of which is arranged to act as safety
valve, Figure 4. The stopper is screwed into the lateral charging opening C
of the reservoir or vase G so that by freeing the cap, which is provided with
two excentrical borings a a², any superfluous gas in the reservoir or vase can
3

page_text: be allowed to escape, or an automatic valve stopper can be employed, the
valve of which will be opened when the pressure of the gases have reached
a predetermined height and will be closed by means of a suitable spiral or
helical spring has soon as the pressure in the reservoir is decreased.
According to this mode of construction I have located the gasifying device
within the reservoir or vase, laterally of the centre of the same, but I also
make such said lamps with the gasifying device applied centrally to the upper
surface of the reservoir or vase and replace the regulating screw r by an ordinary
stop cock A; I also employ a sheet metal mantle f surrounding the spirit cup
or compartment Q which not only protects the spirits of wine employed for
producing the first gas but avoids all danger of fire, Figure 2.
The sheath or tube R which surrounds the wick d both inside and outside,
reaches nearly to the bottom of the reservoir G and is attached to the same
by suitable screw threads b. The gases formed in the reservoir G are excluded
by this sheath R and thus rendered harmless whereas the gases produced by the
gasification of the fluid in the wick ascend and are consumed.
A suitable cup
or dish Q serves to receive the spirit or alcohol which is ignited so as to warm
the tube or wick sheath R and produce the gasification of the fluid in the wick d.
Instead of screwing the burner into the reservoir the said parts can be
attached by a bayonet catch.
According to a further modification of my invention, as shown in Figure 3,
the tube which is surrounded by the wick d, is fixed to the bottom of the
reservoir and over which a second tube or sheath R is arranged, which carries
the perforated casing C to which latter a tube y', which carries the burner and
the incandescent body, is fixed. The outer tube surrounding the wick also
carries the dish or cup Q for the alcohol or spirits of wine, and forms, at the
same time, a part of the bayonet catch. The same is provided exteriorly with
two small pieces of metal and two slots ss, arranged diametrically opposite
to each other and the said pieces of metal. The hooks on the ring * of the
reservoir gear into these slots ss so that if the cup or dish is placed on the
reservoir Gand. is given a partial rotation, the attachment between burner and
reservoir will be completed. To the upper ring of the vase or reservoir G,
I also attach a cup-like part E with a tube H running nearly to the bottom
of the reservoir so that all escape of fluid from the reservoir is rendered
impossible, even when the burner is removed.
As aforesaid, the sheath H reaches nearly to the bottom of the vase or reser-
voir G, so as to form a communicating vessel. If the lamp should be upset
the fluid between the tube last mentioned and the wick sheath is prevented
from escaping by means of a suitable cap and tube . Air is supplied to the
burner but can be cut off by means of a suitable device. In Figure 3 a device
is represented, consisting of a sleeve or ring p', which can be pushed so as to
partially or entirely cover the air inlet openings o³. A like device can be
applied to the upper part of the burner tube. If it is desired to put the lamp
in operation a small quantity of spirits of wine is poured into the cup Q and
ignited. The flame penetrates through the holes or perforations of the casing
and heats the tubes R. and the wick so that the fluid in the wick dis gasified.
flows through the conical boring or opening o' and mixes, at its exit, with the
air entering through the borings o³. This mixture of air and gas flows to the
burner B, and when ignited will heat the Dr. Auer von Welsbach incandescent
cylinder and cause the same to glow.
The entire quantity of the mixture of gas and air is not burnt at the burner,
but a small portion of the same flows back between the two pipes leading from
the heating chamber C to the burner B and through the borings or perfora-
tions into the said chamber C where they are 'consumed and thus produce
a coutmuous production of gas as long as there is fluid in the reservoir G.
The flow of the admixture of gas and air to the burner can be regulated or
cut off by means of the conically pointed rod whilst the sleeve or ring 7 serves
to regulate the influx of air through the borings, openings or ports o.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that
what I claim is:-
1. The application, employment and combination of the Dr. Auer von
Welsbach incandescent system, with a gasifying lamp, consisting of the
receptacle G for the fluid to be gasified, a wick for conducting the fluid to be
gasified to the gasifying chamber C where the said fluid is heated and con-
verted into gas, which escapes through a fine nozzle, is mixed with atmospheric
air and then led to the burner, substantially as described in the foregoing speci-
fication and shown in the accompanying drawings.
2. In gasifying lamps, the application and employment of a safety device.
against explosion, consisting of a tube R, surrounding the wick, and reaching
nearly to the bottom of the vase or reservoir, in combination with a cup E,
the sheath or tubular part of which reaches nearly to the bottom of the reservoir
and surrounds the wick tube R, the bayonet catch and the safety valve arranged
in the opening C of the reservoir or vase G, substantially as described in the
foregoing specification and shown in the accompanying drawings.
3. In gasifying lamps the application and employment of a central air con-
ducting tube or pipe, substantially as described in the foregoing specification
and shown in the accompanying drawings.
11/1
100
ALLISON BROS.,
Agents for the Applicant.