Improvements in or relating to Petroleum Lamps.
Year: 1898

page_text: Date of Application, 7th Jan., 1898-Accepted, 12th Mar., 1898
COMPLETE SPECIFICATION.
Improvements in or relating to Petroleum Lamps.
I, MAX BERNSTEIN, Proprietor of the Firm of Joh. Friedr. Wallmann and
Company, of Blumen Strasse 74, in the City of Berlin, in the German Empire,
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 subject of the present invention is a petroleum glow light lamp in which in
the same manner as with gas glow light lamps a mixture of petroleum vapor and
atmospheric air is utilised in order, by the aid of the head part of a Bunsen burner, to
produce the blue heating flame necessary to render the mantle incandescent.
The invention consists in the arrangement of the head of a Bunsen burner,
vertically adjustable, at the mouth of the burner of an ordinary petroleum lamp,
in such manner that the petroleum vapor enters it and there mixes with the atmo-
spheric air. The arrangement further permits of the regulation of the blue heat-
ing flame produced by this mixture according to the intensity required without
its being necessary, in order to effect this adjustment or to light the lamp, to take
off the lamp cylinder. Furthermore, by reason of the burner head in its lowest
position completely shutting off the wick, no disagreeable vapors are emitted when
the lamp is extinguished.
The accompanying drawing shows two forms of carrying out the invention:
Fig. 1 is a vertical section of a petroleum burner according to one form of con-
struction, on the line -, Fig. 2.
Fig. 2 is an elevation of the burner, the Bunsen burner head being shown in
section.
Fig. 3 is a vertical section through the burner of a second construction with
modified form of Bunsen burner head on the line y-y, Fig. 4; whilst
Fig. 4 shows an elevation of the same.
Fig. 5 is a plan view and
Fig. 6 a side view of the arrangement for raising the burner gallery.
Fig. 7 is an elevation of this gallery, and
Fig. 8 an elevation of the lower part of the petroleum burner.
The wick tube a of the petroleum lamp in the arrangement shown in Figs. 1
and 2, has on the inner wall of the upper part several rows of holes at which allow
of the vaporized petroleum entering the interior of the wick tube.
At the mouth of the wick tube a is the head 6 of a Bunsen burner, which at its
base has a short tubular projection c of the same diameter as the inner wall of the
wick tube a.
In this tubular projection c are likewise several rows of holes a corresponding
to those of the wick tube a.
The burner head 6 is provided with a rack d, operated by a toothed wheel d¹

page_text: mounted on a pin d³, by means of which it can be raised or lowered in a vertical
direction i.e. brought out of and into the wick tube.
In the latter position the holes a² come over the holes a', so that the petroleum
vapor obtains access to the burner head b and there mixes with the air entering
through the lateral opening f in the wick tube a. The air opening f, seen from
without, has the form of a spade with the handle pointing upwards, this narrower
opening promoting warming of the atmospheric air inside the wick tube.
On extinguishing the lamp the burner head b is lowered until the horizontal
flange of the tubular projection c lies over the wick, so preventing further
vaporization of the petroleum which would be accompanied by an obnoxious smell.
At the same time the lateral openings a¹ are closed by the sides of the tubular
projection c.
In the construction shown in Figs. 3 and 4, the tubular projection c is not per-
forated and likewise the holes at in the inside wall of the wick tube a are dispensed
with. The vaporisation of the petroleum here takes place wholly in the upper
part of the flame tube. The petroleum vapor is sucked up by the stream of air
entering through the air opening f and drawn into the burner head b, so that
here also the mixture of gas and petroleum vapor takes place.
is the pin for regulating the screw of the wick in the ordinary manner.
In the lower part of the burner is mounted a pin which may be turned by
its head o'. On the pin o are rigidly fixed two arms o², on the ends of which are
arranged the two guide pins m, taking into the guide slots m¹ (Fig. 6) of the lateral
arms m² of the bridge n. The arms m² lie against the burner tube, so that on turn-
ing the pin o the guide pins m slide along in the slots m¹ and raise the bridge n.
This bridge has a small ring » formed at its centre, into which latter takes the
downwardly projecting pin 1 of the burner gallery h (Fig. 7), the little cross
pin of the pin presting on the surface of the bridge. On turning the pin o the
bridge with the burner gallery can thus be raised so far that the lower edge
of the latter comes above the Bunsen burner head and can be laterally retreated
from it, so that the lamp may be thus lighted without its being necessary to remove
the cylinder.
The operation of the lamp is as follows:
To light the lamp the burner gallery is raised and turned round laterally through
180° and the wick lit, the burner head of the Bunsen burner having been first
raised by means of the gear d. After the head has been sufficiently warmed, i.e.
for about half a minute, it is lowered by means of the gear d', the size of the wick
flame thus being diminished so that the unused part of the gaseous petroleum can
>nter the wick tube from the inner wall of the flame tube a and be sucked up by
the stream of air entering through the opening f, in order to form inside the burner
head the gaseous mixture of air and petroleum vapor, which burns with a blue
flame on the outside of the burner head.
On extinguishing the lamp the burner head b is still further lowered until the
flange rests on the wick and prevents further vaporizing of the petroleum.
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. In a petroleum lamp, the arrangement at the mouth of the wick tube (a) of
a vertically adjustable head (b) of a Bunsen burner, having at its base a short
tubular projection (e) with horizontal flange (i), in such manner that by lowering
the head (b) previously warmed while in its raised position, the entrance of vaporized
petroleum streaming into it and there mixing with the atmospheric air, can be
regulated, and finally by further lowering the head, wholly cut off, all substantially
as set forth.
2. In a petroleum lamp as above described, the combination of the arrangement
claimed in Claim 1, with a pino having rigid arms (02), in the lower part (k) of
the burner, which arms, on the pin being turned, lift horizontally a bridge-piece (n),

page_text: carrying the burner gallery whereby the lamp may be lit without the cylinder
having to be removed, all substantially as set forth."
Dotad this 7th day of January 1898
BOULT & WADE,
Agents for the Applicant.