Year: 1886

page_text: I ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Engineer, do hereby declare the nature of this invention (a communication from
J. A. Kumberg of St. Petersburg Russia Manufacturer) and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement:-
The automatic petroleum gas lamp can be used wherever illumination by gas is
considered as detrimental to health or too expensive. Because of the simplicity of
construction and absolute absence of danger and smell it is especially adapted for
the illumination of railway-carriages ships-cabins, factories, warehouses, schools
and lighthouses.
”
The different parts of the lamp may be of any construction and it is immaterial
whether it be a round or flat burner, or whether it be a standing or hanging
lamp.
To illustrate the principle of the invention a lamp of the most simple construction
is represented in the drawings.
In the accompanying drawings:-
Figure 1 represents a vertical section of the lamp and Figure 2 a section of
Figure 1 on line a-b.
A is the reservoir of the lamp which contains the petroleum, pyronaphtha or
vegetable oil and the wick is introduced through the tube, a.
This reservoir A is
covered by a mantle B in such a manner that a current of air can pass between
the reservoir A and the mantle B. The device for the introduction of the reservoir
into the mantle may be of any description. On the upper end of the mantle B and
above the wick-tube of the reservoir A a cap C is fastened through which the
flame must pass in case the lamp is lit and therefore the opening in C is determined
by the shape of the burner. When the lamp is lit the shade I will catch the warm
air which has absorbed fresh oxygen in its way from the burner to the screen, and
passes into the tube E until it reaches in the direction of the arrows, in a cooled
state again the burner and feeds the flame.

page_text: In this manner no air can reach the burner from outside; in consequence a
smoking of the lamp is avoided and the air of the room where the lamp burns will
not be warmed or deteriorated. Danger in capsizing the lamp is avoided because
the circulation of air through the tube E would cease and the flame in consequence
be extinguished.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to.
me by my foreign correspondent I declare that what I claim is :-
1. In lamps for burning mineral or vegetable oil the method of catching the
warm air from the burner by a shade or screen which air has again absorbed
sufficient oxygen on its way. from the burner to the shade, and leading this air in
a cooled state again to the burner. so that each lamp forms in itself without the
usual ventilation glass chimney or other apparatus a portable gas lamp substantially
as specified.
2. In lamps for burning mineral or vegetable oils the method substantially as
specified of creating an air current by the heat of the flame the said air current
taking up the vapours of the oil so that an approximately complete combustion
thereof is obtained.
3. The complete lamp consisting essentially of the combination with a reservoir
and burner of a shade or collector D which collects the air heated by the flame a
tube E which conveys the said heated air from the collector a casing B connected
with E and surrounding the reservoir and a cap C surrounding the burner the
whole constructed and operating substantially as and.for the purpose specified.
' 1000