Improvements in Oil Lamps.
Year: 1899

page_text: Date of Application, 10th Aug., 1899
Complete Specification Left, 10th May, 1900-Accepted, 16th June, 1900
Improvements in Oil Lamps.
I, LLEWELYN JONES, of New Inn, Worle, Weston-super-Mare, in the County of
Somerset, do hereby declare the nature of this invention to be as follows:-
:-
This invention for improvements in oil lamps has for its object to provide a
simple and inexpensive device which shall effectually prevent such violent
explosions in oil lamps as frequently occur through the ignition of vaporised
oil, which collects during the burning of the lamp, in the upper part of the oil
reservoir and consists of a short closed tube secured to the lower part of the
burner and enclosing the wick and extending nearly to the bottom of the reservoir
so that the ignition of vapor if it occur is confined to the interior of the enclosing
tube and would allow ample time for the lamp to be extinguished before any
ignition of the vapor in the reservoir could take place.
In carrying out this invention a short tube preferably of metal and of a
suitable diameter for holding the wick of a lamp is screw threaded at both ends,
its lower end being adapted to receive a perforated screw plug or cap through
which oil is admitted to the wick and its upper end being screwed on to the
lower part of the burner which is reduced and screw-threaded for the purpose.
The tube is perforated with small holes near its upper end to allow of the escape
of expanded vapors from the reservoir in case of the oil burning in the tube
and also to ensure the same pressure in the tube as in the surrounding reservoir.
The walls of the tube are made sufficiently strong to resist the effects of an
explosion and of such a thickness as to prevent the flame from passing through
the perforations therein into the reservoir.
The tube when inserted extends to near the bottom of the reservoir and may be
screwed off and on with the burner when filling the lamp with oil.
Dated this 10th day of August 1899
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C.,
Agents.
Improvements in Oil Lamps.
I, LLEWELYN JONES, of New Inn, Worle, Weston-super-Mare, in the County of
Somerset, 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:-
This invention for improvements in oil lamps has for its object to provide a

page_text: simple and inexpensive device which shall effectually prevent the violent
explosions in oil lamps as frequently occur through the ignition of vaporised
oil, which collects during the burning of the lamp, in the upper part of the oil
reservoir and consists of a short closed tube secured to the lower part of the
burner and enclosing the wick and extending nearly to the bottom of the reservoir
so that the ignition of vapor if it occur is confined to the interior of the enclosing
tube.
In carrying out this invention a short tube preferably of metal and of a
suitable diameter for holding the wick of a lamp is screw threaded at both ends,
its lower end being adapted to receive a perforated screw plug or cap through
which oil is admitted to the wick and its upper end being screwed on to the
lower part of the burner which is reduced and screw threaded for the purpose.
The tube is perforated with small holes near its upper end to allow of the escape
of expanded vapors from the reservoir in case of the oil burning in the tube
and also to ensure the same pressure in the tube as in the surrounding reservoir.
The walls of the tube are made sufficiently strong to resist the effects of an
explosion and of such a thickness as to prevent the flame from passing through
the perforations therein into the reservoir. The tube when inserted extends to
near the bottom of the reservoir, and may be removed with the burner when
filling the lamp with oil.
In the accompanying sheet of illustrative drawings, Fig. 1 is a vertical central
section through the reservoir, and burner of an oil lamp constructed according
to this invention, and Fig. 2 is a plan of the fitting.
The burner is provided at its lower end with screw threads b whose diameter
is somewhat less than that of the openings into the reservoir c. A short perforated
tube d is screwed on to the threads b. and a tube c is screwed into the lower end
of the tube and extends nearly to the bottom of the reservoir c, and a cap f is
screwed into the lower end of the tube e. The diameters of the tubes de, and
of the cap f, is such that they will readily pass through the opening into the
reservoir.
It will readily be understood that the closed perforated structure def may be
constructed in any other suitable manner, for example it may be in one piece or
brazed, or soldered up instead of being screwed together, and it may be secured
to the burner by a bayonet catch or other fitting.
The wick of the lamp is entirely contained in the tubes de and the perforations
in the tube d are made very small to obviate all danger of any possible ignition
in the tube passing back into the reservoir. The oil to be consumed passes into
the tube through the perforations in the cap f.
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 an oil lamp, a closed perforated tube extending from the burner to nearly
the bottom of the reservoir.
2. The improved oil lamp substantially as described with reference to the
drawings.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C.,
Agents.