Improvements in or relating to Oil Lamps.
Year: 1895

page_text: Date of Application, 22nd Nov., 1895
Complete Specification Left, 12th Mar., 1896-Accepted, 18th Apr., 1896
PROVISIONAL SPECIFICATION.
Improvements in or relating to Oil Lamps.
I, GEORGE HOLLAND of Oakwood Lane, Barnton, near Northwich in the
County of Chester, do hereby declare the nature of this invention to be as
follows:-
:-
This invention relates to oil lamps and comprises čertain improvements in con-
struction hereafter more fully set forth.
In carrying the invention into effect, I provide an airtight wick tube which
passes through the burner to near the bottom of the oil container. At or near the
bottom of the tube there is a cavity or chamber capable of holding a certain
amount of the wick rolled up into a roll, this chamber being so constructed as to
enable the wick to be unrolled and wound up through the burner as the top of the
wick is burnt. This enables the lamp to hold sufficient wick to last for a very
considerable time. At the bottom of the wick aforesaid, there is a screw plug or
its equivalent which enters the bottom of the chamber at the bottom of the wick
tube. The wick is passed down the tube, rolled up into a roll in the chamber and
then the screw plug is screwed on, and thus the tube is airtight and the wick is
completely separated from the oil except through a small hole in the centre of the
screw plug. Through this small hole, there is a worsted siphon, which acts as a
regulator, and prevents any rush of oil, no matter what way the lamp may fall or
be knocked about and thus prevents any explosion.
The extinguishing devices are self acting and comprise a cap which guides the
flame. It is round at bottom and runs up to a square at top being rounded off
sufficiently to spread the flame. There are two extinguishers one on each side of
the flame and underneath the cap which guides it. The side of the cap keeps the
extinguishers in position and thus acts in accordance with the way in which the
lamp falls. No matter how steadily the lamp is turned over when it gets about 25°
out of the perpendicular the extinguisher on the upper side falls direct on the flame
and completely extinguishes it. These extinguishers act independently of each
other, and so promptly that if the lamp is given a sudden shake, they at once
extinguish the flame although the lamp may be standing upright. After extin-
guishing the flame, the extinguisher can be lifted back into position by a small
piece of twine with a small button or tassel at the end which hangs underneath the
burner one on each side.
The chimney, burner and the oil container may be of ordinary construction.
A small vent hole may be fitted on top of the oil container clear of the burner.
Dated this 21st day of November 1895.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.

page_text: I, GEORGE HOLLAND, of Oakwood Lane, Barnton, near Northwich in the
County of Chester, 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 relates to oil lamps and comprises certain improvements in
construction hereafter more fully set forth.
The invention will be understood from the following description, reference being
had to the accompanying drawings in which
Figure 1 is a sectional front elevation of a lamp with my invention applied
thereto;
Figure 2 a sectional side elevation of the same;
Figure 3 a front elevation of the extinguisher ;
Figure 4 a plan view of the burner cap; and
Figure 5 shows my invention applied to a duplex burner.
A is the wick tube which passes from the burner to near the bottom of the oil
container B. At or near the bottom of the tube A there is a cavity or chamber C
capable of holding a certain amount of the wick rolled up into a roll, this chamber
being so constructed as to enable the wick to be unrolled and wound up through
the burner by the milled head D as the top of the wick is burnt. This enables the
lamp to hold sufficient wick to last for a very considerable time. At the bottom of
the wick aforesaid, there is a screw plug E or its equivalent which enters the
bottom of the chamber C at the bottom of the wick tube A. The wick is passed
down the tube A, rolled up into a roll in the chamber C and then the screw plug E
is screwed on, and thus the wick is practically completely separated from the oil,
except through a small hole F in the centre of the screw plug E.
Through this small hole F there is an auxiliary wick or syphon G of wool,
worsted or the like, which acts as a regulator, admitting only the required amount
of oil to the wick and no more, and prevents any volume of oil rushing through
the tube should the lamp be upset or even turned upside down, and thus explosion
or other accident due to the upsetting of the lamp is avoided.
In action, the auxiliary wick G feeds oil from the container to the roll of wick
in the chamber C, from whence the wick leads the oil to the burner by capillary
attraction, the oil being evolved as gas at the flame to maintain combustion.
H is a small hole in the top of the chamber C which admits air when the level of
the oil in the container B falls below the top of the chamber C. I are small vent
holes in the screw plug J, these holes being arranged clear of the burner.
plug Jenables the container B to be replenished with oil as required.
The
KK are extinguishers, one on each side of the flame and within the burner
cap L. The extinguishers are pivoted in the cap L, and one or other of them will
act in accordance with the way in which the lamp falls. No matter how steadily
the lamp is turned over, when it gets about 25° out of the perpendicular, the
extinguisher, which for the time being is on the upper side, falls direct over the
top of the wick tube and completely extinguishes the flame. These extin-
guishers act independently of each other; and so promptly, that if the lamp is
given a sudden shake, they at once extinguish the flame, although the lamp
may be standing upright. After extinguishing the flame, the extinguisher can
be pulled back into position by means of a small piece of twine M with a small
button or tassel at the end which hangs underneath the burner, one on either
side.
Figure 5 shows my invention as applied to lamps with double wicks, there being
in this case two separate wick tubes A joined in the chamber C. E is the screw

page_text: plug in the bottom of the chamber C with hole F and auxiliary wick G, or if
preferred the tubes may be kept separate from each other and each have its own.
chamber and screw plug. This however will take up more space.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In an oil lamp, the wick of which leads oil to the flame by capillary attraction,.
closing the wick tube or tubes at the bottom and forming therein one or more
small holes with subsidiary wicks dipping into or submerged in the oil container,
the lamp wicks being thus practically separated from the oil in the container
except through the subsidiary wicks aforesaid, which alone regulate the supply
of oil to the flame, whereby any escape of oil is prevented should the lamp be
upset.
2. In an oil lamp, the wick or wicks of which are separated from direct contact
with the main body of oil in the container, forming the wick tube or tubes with an
enlarged sectional area at or near the bottom for holding a roll or bundle of wick
in combination with an auxiliary wick or wicks dipping into or submerged in the-
oil which alone regulate the supply of oil to the wick in the wick tube substantially
as and for the purpose described.
3. An oil lamp in which the wick tube is formed with an enlarged sectional
area at or near the bottom thereof, in combination with a wick the lower end
of which is so rolled up or wound into a bundle or roll and inserted into the
enlarged portion aforesaid of the wick tube, as to enable the wick to be unrolled
or wound up through the burner as the top of the wick is burnt, whereby the
lamp is enabled to hold sufficient wick to last for a much longer time than
formerly.
4. In an oil lamp, the use in combination therewith of extinguishers pivoted one
on each side of the flame, and so arranged that whichever way the lamp be upset,
one or other of them will fall direct over the top of the wick tube and completely
extinguish the flame substantially as described.
5. The general combined arrangement and construction of parts forming my
improved oil lamp, and especially the arrangement by which the wick 18
separated from the oil except through the auxiliary wick G, whereby only the
required amount of oil is admitted to the wick tube, and any volume of oil
rushing through the tube is prevented, should the lamp be upset, substantially as.
set forth.
Dated in och
1000
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, and London, Patent Agents..