Improvements in Oil Lamps.
Year: 1894

page_text: Date of Application, 3rd Aug., 1894
Complete Specification Left, 2nd May, 1895-Accepted, 8th June, 195
Improvements in Oil Lamps.
I, WILLIAM PERKINS, of 1 Sherborne Lane, King William Street, in the
County of London, Mining Engineer, do hereby declare the nature of this
invention to be as follows:-
My invention relates to a construction of oil lamp in such a manner that the
consumption of the wick is so small that no adjustment of its height is necessary,
that there can be no spilling of the oil when the lamp is upset or inverted, and no
danger of flame finding its way into the reservoir.
For this purpose, I employ a wick which consists of porous material such as a
strip or strips of blotting paper completely filling a tube which extends almost to
the bottom of the reservoir. Owing to the tight packing of the wick material
there can be no stream of oil out of the wick tube when the lamp is upset, and
when the lamp is inverted no oil can enter the wick tube. Also the flow of oil by
capillary attraction is so restricted that the wick which scarcely projects above the
top of the wick tube does not burn and does not require trimming nor raising and
lowering and consequently there is no opening through the side of the wick tube
for that purpose.
The flame may be regulated by raising and lowering the air cone, gallery and
glass within certain limits.
Dated this 3rd day of August 1894.
ABEL & IMRAY,
Agents for the Applicant.
Improvements in Oil Lamps.
I, WILLIAM PERKINS, of 1 Sherborne Lane, King William Street, in the
County of London, Mining Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:―
My invention relates to a construction of oil lamp in such a manner that there
is no consumption of wick or a consumption so small that no trimming of the wick
or adjustment of its height is required that there is no risk of spilling oil when
the lamp is upset or inverted, and no danger of flame finding its way into the oil
reservoir.
I shall describe a lamp according to my invention referring to the accompanying
drawings.
Fig. 1 is a vertical section of the lamp.
Fig. 2 is a section of the wick tube on a plane at right angles to that in
Fig. 1 and
Fig. 3 is a sectional plan at Z Z of Fig. 1.
I employ a wick consisting of porous material such as a strip or strips of blotting
paper completely filling the wick tube T which extends almost to the bottom of
the oil reservoir R. The construction of the lamp in respect of the gallery, air
[Price 8d 1

page_text: cone and glass is of ordinary kind but there is no appliance for adjusting the height
of the wick the top of which projects a very little above the top of the wick tube.
In order to vary the height and power of the flame I slide the tubular base B of
the gallery a little up or down the boss of the wick tube and in order that it may
not slip provide a screw screwing through B and a projection formed thereon, so
as to clamp it to the boss of the wick tube or I make the base B a tight fit aud
split it at one place or more so that it elastically grasps the boss. When it is not
desired to slide the gallery and air cone up or down, the gallery may be made
without a tubular boss B, but permanently attached to the boss of the wick tube as
shewn in Figs. 14 and 2^.
The wick fills its tube so solidly that although sufficient oil to supply the flame
ascends by capillary attraction, it is not possible for any stream of oil to issue when
the lamp is upset or inverted. The flow of oil resulting from capillary attraction
is such that no sensible consumption of wick takes place and consequently no
trimming or elevating of the wick is necessary. Small holes a a admit air to the
reservoir as the oil is withdrawn.
Although I have shewn a lamp with a single wick obviously it might be made a
duplex lamp by providing two parallel wicks in the known manner, or it might
have a cylindrical wick of the kind described enclosed between two concentric
tubes.
Instead of making the boss of the wick tube coned as shewn to fit the coned
month of the reservoir it may be screwed in or otherwise fixed, and there may be a
eparate plugged hole for feeding the reservoir.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. An oil lamp having a wick tube which extends almost to the bottom of the oil
reservoir, and is completely filled with porous material such as blotting paper
constituting the wick substantially as described.
2. In combination with the wick tube a boss thereon and a tubular base of the
gallery which carries the air cone and glass fitted to slide up and down upon
the said boss substantially as and for the purpose set forth.
Dated this 2nd day of May 1895.
ABEL & IMRAY,
Agents for the Applicant.