Improvements in Petroleum and other Lamps.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Petroleum and other Lamps.
I, TÖNNES ANDREASEN, of 567, Commercial Road East, in the County of London,
Commission Agent, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in petroleum and other lamps, the object
of the invention being to so construct such lamps that on their being upset the
supply of oil is cut off to the burner so that the lamp is extinguished.
The
construction of my lamp is also designed to prevent explosions.
In carrying out the invention I construct a lamp having a reservoir
which is divided by a horizontal partition into upper and lower chambers.
The upper chamber is divided into two concentric or approximately concentric
chambers by an upright tube which is connected to the said partition and to the
upper part of the reservoir. Within this central tubular chamber thus formed
I provide a second tube which is connected to the partition but preferably does not
reach quite to the top of the reservoir so as to prevent the heat of the burner.
passing to the oil or which may reach to the top of the reservoir and be connected
to the annular space formed between the two tubes by means of perforations in
its upper part. The portion of the partition between the two tubes, that is to
say, the portion forming the bottom of the annular space is formed with a number
of holes so that communication is made between the said annular space and the
lower chamber of the reservoir. The outer portion of the upper chamber of the
reservoir is connected with the innermost tube by means of a horizontal tube
which may be coiled, and the bottom chamber of the reservoir is provided with
an outlet pipe for the purpose hereinafter described.
The outer portion of the upper chamber is furnished with a filling screw which
has an air hole controlled by a valve arranged to admit air into, but to prevent
its escape from, the said chamber.
To employ a lamp constructed as above described oil is poured into the outer
portion of the upper chamber of the reservoir and flows from this chamber
through the horizontal tube into the central tube which supplies oil to the burner
in the ordinary way. Should, however, the lamp be upset the oil in this said
central tube passes into the annular chamber and thence through the perforations
in the bottom of the said chamber into the bottom empty chamber from which it
can be drawn off by the before mentioned outlet pipe. It will, therefore, be
obvious that the dangerous explosions heretofore common on the upsetting of a
lamp are avoided, for as soon as the lamp is sufficiently tilted to be dangerous
the oil in the central chamber flows away so that the lamp is extinguished.
Instead of the partition I may extend the two tubes down to practically the
bottom of the reservoir, the bottom ends of the tubes being closed. In this case
the annular space between the tubes receives the oil when the lamp is upset. Or
I may dispense with the inner tube and provide the bottom of the single central

page_text: tube with a valve which opens automatically when the lamp upsets so as to allow
the oil to flow away.
Dated this 6th day of May 1899.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Petroleum and other Lamps.
I, TÖNNES ANDREASEN, of 567, Commercial Road East, in the County of London,
Commission 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:-
1-
.
This invention relates to improvements in petroleum and other lamps, the object
of the invention being to so construct such lamps that on their being upset the
supply of oil is cut off to the burner so that the lamp is extinguished. The
construction of my lamp is also designed to prevent explosions.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which:-
Figure 1 is a vertical section of a lamp constructed according to my invention;
anid
Figure 2 is a horizontal section of the same on the line 2-2 Figure 1:
In carrying out the invention 1 construct a lamp having a reservoir A which is
divided by a horizontal partition a into upper and lower chambers. The upper
chamber is divided into two concentric or approximately concentric chambers b
and c by an upright tube d which is connected to the partition a and to the upper
part of the reservoir A. Within the central tubular chamber thus formed I
provide a second tube e which is connected to the partition a but preferably as
shewn, does not reach quite to the top of the reservoir A so as to prevent the
heat of the burner passing to the oil, (or the tube e may reach to the top of the
reservoir and be connected to the annular space f formed between the two tubes
by means of perforations in its upper part). The portion of the partition a
between the two tubes d, e, that is to say, the portion forming the bottom of the
annular space f is formed with a number of holes g so that communication is made
between the annular space f and the lower chamber of the reservoir A. The
outer portion 6 of the upper chamber of the reservoir A. is connected with the
inner tube or chamber e by means of a horizontal tube i which may be coiled
as clearly shewn in Figure 2, and the bottom chamber h of the reservoir A is
provided with an outlet pipe j for the purpose hereinafter described.
The outer portion 6 of the upper chamber is furnished with a filling screw k
which has an air hole controlled by a valve arranged to normally admit air
into the said chamber, but to prevent the escape of the contents of the chamber
through the hole when the lamp is upset.
To employ a lamp constructed as above described oil is poured through the
filling hole into the outer portion of the upper chamber of the reservoir A
and Hows from this chamber through the horizontal tube i into the central tube c
which supplies oil to the burner B in the ordinary way. This tube is coiled
around the inside of the reservoir A as shewn. Should the lamp be upset the oil
in the central tube e passes into the annular chamber f.and thence through the
perforations 9 in the bottom of the said chamber into the bottom empty cham-
ber from which it can be drawn off by the before mentioned outlet, pipe j;

page_text: further supply of oil to the central tube e being cut off in consequence of the
coiled tube being brought above the level of the oil in the reservoir so that
no oil can flow through it. It will, therefore, be obvious that the dangerous
explosions heretofore common on the upsetting of a lamp are avoided, for as
soon as the lamp is sufficiently tilted to be dangerous the oil in the central
tube e flows away so that the lamp is extinguished.
Instead of employing the partition a I may extend the two tubes d and e
down to practically the bottom of the reservoir A, the bottom ends of the tubes
being closed. In this case the annular space between the tubes d and e receives
the oil when the lamp is upset. Or, I may dispense with the inner tube e and
provide the bottom of the single central tube (which is connected to the chamber b
by the coiled tube i in the manner above described) with a valve which opens
automatically when the lamp upsets so as to allow the oil to flow away.
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
1 claim is:-
1. A petroleum or other lamp having a reservoir divided horizontally into
upper and lower chambers, concentric tubes in the upper chamber the space
between which tubes is open to the interior of the inner tube and to the lower
chamber, a tube or equivalent means of communication between the interior
of the inner tube and the exterior of the outer tube and an outlet pipe for the
said lower chamber, substantially as, and for the purpose, herein before described.
2. In a lamp of the kind described in Claim I connecting the interior of the
inner tube and the exterior of the outer tube by a coiled tube such as i, sub-
stantially as, and for the purpose, herein before described.
3. The modified construction herein before described, in which the tubes d
and e extend down to the bottom of the reservoir, the bottom ends of the tubes
being closed, substantially as set forth.
4. The modified construction hereinbefore described in which the inner tube e
is dispensed with and the bottom of the single central tube is provided with a
valve, substantially as, and for the purpose set forth.
5. In a lamp, providing the reservoir with a central tube which does not
reach to the top of the reservoir in order to prevent the heat of the burner pass-
ing to the oil, substantially as herein before described.
6. The combination with the reservoir of a lamp, of a filling screw having an
air hole controlled by a valve which closes the said hole when the lamp is upset,
substantially as herein before described.
7. A lamp having the herein described means for cutting off the supply of
oil to the burner so that the lamp is extinguished in the case of its being upset,
substantially as set forth and illustrated in the accompanying drawing.
Dated the fith day of Fabory 1000
G. F. REDFERN
Co.,
4, South Street, Finsbury, London, Agents for the Applicant.