Improvements in Safety on Lamps.
Year: 1894

page_text: Improvements in Safety on Lamps.
BERNARD LIETAR of No. 26 Rasiere Street, Brussels, in the Kingdom of
Belgium, Lamp Maker, do hereby declare the nature of this invention to be as
follows:-
It consists of four tubes, one within the other, running through the body of my
lamp, with three central air-currents given to burner intended to cause all the gas
contained in the oil, or paraffin to burn, thus preventing any smell of unconsumed
gas, which escapes from ordinary lamps, and to produce three times as much light
with the same consumption of oil.
The smallest tube is placed in the centre of the lamp and to same a perforated
sheet-iron tube is adapted, bearing two buttons of same size as the outside of the
wick-from between these two buttons the air escapes.
The two next and larger tubes are at a distance from the first in order to give
air to the flame-they are soldered or otherwise fixed together underneath.
The fourth is soldered to the body, or recipient of the lamp, at a distance from
the two last, in order to give air between the burner and the body of the lamps so
as to prevent the heating of the oil therein-and a small tube, sufficient to feed the
flame, is placed at the bottom of the recipient between the latter and the burner
tubes, for the purpose of supplying oil to the wick, according to the requirements
of consumption, which renders my lamp an inexplosible or safety one.
The size of the tubes depends upon the wicks required to be used in order to
give a more or less powerful light-and their length according to the shapes of the
bodies of the lamps.
As in the case of ordinary lamps, the tubes are soldered or fixed together at the
bottom by three small bits of tube, and three further such bits are also soldered to
the burner-tube and body of the lamp.
Improvements in Sallery on
amps.
I, BERNARD LIETAR, of 26 Rasiere Street, Brussels, 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 distinguishing feature of the present invention consists in providing the
lamp with three air tubes for feeding the flame, instead of with one only, as is the
case with ordinary lamps. Two of these air tubes surround the circular wick
externally and internally for the purpose of feeding air to the Hame at its base, and
the third air tube is situated in the centre and is provided at its upper end with
a perforated tube for the purpose of feeding the flame with air laterally.
The combined action of these air currents increases considerably the lighting
power of the flame and at the same time renders the lamp inexplosive, the wick
D

page_text: being separated from the oil vessel by the said external air tube and the oil being
admitted to the wick by a small pipe near the bottom of the oil vessel.
The annexed drawing represents a vertical and a
improved lamp.
transverse section of the
A is the central air tube at the upper end of which is inserted the perforated
tube a. The latter is made from a perforated metal sheet and is closed at the top
and provided with two reflecting discs a". As the air cannot escape through the
perforated part of this tube a' which is inserted in the central tube A, it is obliged
to pass laterally through the perforations in the said tube a' comprised between the
reflecting dises a¹¹
B is the internal air tube or circular channel, through which the lamp may be
lit. is the wick containing chamber formed by two concentric tubes closed at
the bottom. D is the external air tube which separates the wick from the oil
vessel and keeps the latter from being heated by the burner.
E is the small pipe
connecting the oil vessel with the wick chamber and admitting only the quantity of
oil necessary for immediate combustion.
The shape of the oil vessel and the proportions of the lamp may be varied
according to requirements, and the lamp may be used for burning petroleum,
paraffin, or any other suitable burning fluid.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, 1 declare that what 1
claim is :-
1. In a petroleum or oil lamp having a circular wick, the application and use of
two concentric air chambers or air tubes arranged externally and internally of the
wick and descending through the oil vessel for the purpose of feeding the flame
with air at its base and of isolating at the same time the oil vessel from the wick
chamber, substantially as describe and illustrated.
2. In a petroleum or oil lamp having a circular wick, the application and use of
a central air tube at the upper end of "which is inserted a perforated tube provided
with reflecting discs for the purpose of feeding air to the flame laterally,
substantially as described and illustrated.
3. In a petroleum or oil lamp as specified in Claims 1 and 2 above, separating
the oil vessel from the wick containing chamber by n concentric air tube and
connecting the said oil vessel and wick containing chamber by a small pipe situated
Dear the bottom of the oil vessel, substantially as described and illustrated.
Dated this 18th day of March 1895.
E. P. ALEXANDER & SON,
Chartered Patent Agents,
19, Southampton Buildings, Chancery Lane, London, W.C., Agents.