Improvements relating to Lamps and Stoves for Burning Mineral and other Oils.
Year: 1892

page_text: Date of Application, 11th Aug., 1892
Complete Specification Left, 11th May, 1893-Accepted, 1st July, 1893
PROVISIONAL SPECIFICATION.
Improvements relating to Lamps and Stoves for Burning Mineral
and other Oils.
I, WALTER LEIGH HUNT, of 3, Great Winchester Street, in the City of
London, Secretary of Public Companies, do hereby declare the nature of this
invention to be as follows:-
My invention relates to lamps and stoves for burning mineral and other oils, and
is designed to provide simple and efficient means for extinguishing the flame in
such lamps or stoves without the necessity for altering the position of the wick or
wicks and in such a manner that the said wick or wicks will require trimming, if
at all, less frequently than heretofore, and a flame of more uniform height and
therefore of greater brilliancy will be produced.
The principle of my said invention is the starvation of the flame by arresting or
preventing the flow or supply of oil to the wick or wicks. I have discovered that,
when the wick of an oil lamp or stove is deprived of its supply of oil, the flame,
in burning itself out, consumes a very small quantity of the wick and leaves the
wick in very good trim for producing a brilliant and uniform or even flame on
being re-lighted when the supply of oil to such wick is again permitted. Moreover
I have found that a lamp or stove can be advantageously allowed to burn out in
this manner without lowering or altering the position of the wick as is usually
done with ordinary oil lamps or stoves.
According to my said invention, therefore, I provide an oil lamp or stove with
suitable means whereby the extinguishing of the flame or flames may be
conveniently effected by arresting or preventing the flow or supply of oil to the
wick or wicks, and the resumption or recommencement of such flow or supply can
be readily permitted when it is desired to re-light the said lamp or stove.
I accomplish the desired result, in some instances, by the withdrawal of the oil
from the reservoir into a separate chamber or receptacle. For this purpose I find
it advantageous to connect the bottom of the said reservoir with the top of the
separate chamber or receptacle by means of a tap or cock, a syphon or a suitable
passage or tube or combination of passages or tubes, through which the flow of the
oil can be effectively controlled.
For controlling the flow of the oil from the reservoir into the vessel or chamber
beneath it, I sometimes connect the two vessels or chambers by means of tubes of
small diameter so that the air cannot pass from the lower chamber into the
reservoir through the said tubes, and the flow of oil from the said reservoir into
the lower chamber will, therefore, not take place until the air is allowed to escape
from the said lower chamber. For this purpose I provide the latter chamber with
a suitable vent controlled by a valve or other convenient device. The two vessels
or receptacles may, if desired, be so connected that the lower vessel can be readily
detached from the reservoir to permit the pouring of the oil back into the latter
when it is desired to re-light the lamp or stove, or into a separate vessel or
filler.
In other instances, I provide for arresting the flow of the oil to the flame by
the compression of the wick by means of a suitable device, such as a spring clip
or jaw, which can be readily adjusted, through the medium of an eccentric, a
lever or the like, to remove the pressure from the wick when the lamp or stove is
to be re-lighted.
Or I can, if desired, provide for lifting the wick out of the oil in the reservoir
without altering its position in the wick-tube.
2

page_text: My invention affords the following advantages, viz. :-The exhaustion of the
oil from the wick allows the latter to be burnt down to the level of the top of the
burner, and this is effected so evenly. that no further trimming of the wick is
necessary; the irksome task of hand-trimming is thus obviated; moreover the
wick is trimmed more evenly by the burning down of the same than is practicable
by means of scissors or a cloth in the usual manner. By reason of this even
trimming, a brilliant light or a high degree of heat can be obtained, because the
flame can be allowed to rise higher than heretofore without flaring or smoke.
Moreover there is no liability to the falling of charred wick from the burner, and
to the consequent smoke, smell and soiling of the surface and clogging of the
passages of the lamp or stove.
Dated this 11th day of A now 1900
0
W. LEIGH HUNT.
D. Young & Co.,
11 & 12, Southampton Buildings, London, W.C,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements relating to Lamps and Stoves for Burning Mineral
and other Oils.
I, WALTER LEIGH HUNT, of 3 Great Winchester Street, in the City of
London, Secretary of Public Companies, do hereby declare the nature of this
invention and in what manner the same is to be performed to be particularly
described in and by the following statement:-
My invention relates to lamps and stoves for burning mineral and other oils,
and is designed to provide simple and efficient means for extinguishing the flame
in such lamps or stoves, without the necessity for altering the position of the wick
or wicks or applying to the extremity thereof an extinguishing device such as is
used in some of the lamps hitherto constructed; and to accomplish this result in
such a manner that the said wick or wicks will require trimming (if at all) less
frequently than heretofore, and a flame of more uniform height and therefore of
greater brilliancy will be produced.
The principle of my said invention is the starvation of the flame by arresting
or preventing the flow or supply of oil thereto. I have discovered that, when the
wick of an oil-lamp or lamp-stove is deprived of its supply of oil, the flame, in
burning itself out, consumes a very small quantity of the wick and leaves the wick
in very good trim for producing a brilliant and uniform or even flame on being
re-lighted when such wick is again supplied with oil. Moreover I have found
that an oil-lamp or lamp-stove can be advantageously allowed to burn out in
this manner without lowering or altering the position of the wick as is usually
done with ordinary oil-lamps or lamp-stoves.
According to my said invention, therefore, I provide an oil-lamp or lamp-stove
with suitable means whereby the extinguishing of the flame or flames may be
conveniently effected by arresting or preventing the flow or supply of oil thereto,
and the resumption or recommencement of such flow or supply can be readily
permitted when it is desired to re-light the said lamp or stove.
For this purpose I find it advantageous to connect the bottom of the oil-
reservoir with the top of a separate or auxiliary chamber or receptacle by means
of a tap or cock, a syphon, or a suitable passage or tube or combination of passages or
tubes, through which the flow of the oil can be effectively controlled so that
the extinguishing of the flame can be effected by the withdrawal of the oil from
the reservoir into the separate or auxiliary chamber or receptacle. I can,
however, provide other convenient means for depriving the flame or flames of
oil for the purpose above specified.

page_text: ס"
conveniently and advantageously carried into practice.
Figure 1 is a sectional elevation showing a lamp with my improvements applied
thereto.
Figure 2 is a side elevation illustrating another form or modification of my
invention.
Figures 3 and 4 are sectional elevations illustrating further modifications
thereof.
Like letters indicate corresponding parts throughout the drawing.
A is the burner; B is the oil-reservoir; C is the wick; D is the auxiliary
chamber or receptacle for receiving the oil when it is desired to withdraw the same
from the oil-reservoir.
In the lamp shown in Figure 1, I provide for controlling the flow of the oil from
the reservoir B into the vessel or chamber D beneath it, through a tube E of small
diameter, which, in conjunction with a cap or dome F having perforations F¹ at its
lower end, forms a syphon. The chamber D is provided with a rent-pipe G which
extends through the reservoir B and is closed at its upper end by a cap or cover G¹.
The tube E is of such small bore that the air cannot rise from the lower chamber D
into the reservoir B through the said tube, and consequently the flow of oil from
the said reservoir into the lower chamber will not take place until the air is allowed
to escape from the said lower chamber by removing the cap or cover G¹ from the
vent-tube G. The lamp shown in Figure 1 is supported in a vessel or receptacle H
of glass, porcelain or other suitable material.
In the arrangement shown in Figure 2, the oil-reservoir B is connected with the
chamber or receptacle D by means of a cock or tap J screwed into or otherwise
fitted to the receptacle D so that it can be readily disconnected therefrom. The
receptacle D is also provided with a vent G closed by a cap or cover G¹. To
extinguish the lamp it is only necessary to loosen or remove the cap or cover G' to
permit the escape of air from the chamber D, and to open the cock J and allow
the oil to flow from the reservoir B into the receptacle D. thus depriving the wick
of oil so that the flame will gradually burn out. Or the cap or cover G may have
a hole formed through it for the escape of air from the receptacle D, in which case
it is only necessary to open the cock J in order to permit the flow of the oil from
the reservoir B into the said receptacle. When it is desired to relight the lamp,
the cock J must be closed, and the reservoir B may then be disconnected from the
receptacle D, and the oil be poured from the latter back into the reservoir B
through the tube G, either directly or by pouring it first into a suitable oil-can and
thence into the said reservoir.
In the modification of my invention illustrated in Figure 3, the reservoir B and
receptacle D are both enclosed in a vessel or receptacle H, and are so connected
that, when it is desired to re-light the lamp, the reservoir B and the receptacle D
may be separately lifted out of the receptacle H, and the oil can then be readily
poured from the receptacle D back into the reservoir B. In this case, the
reservoir B is provided with a tube E which extends into a funnel-shaped tube or
nozzle K in the top of the receptacle D. The tube E is closed by a plug or
valve L, the screw-spindle L¹ of which extends through the reservoir B and is
provided with a milled head L or other convenient arrangement for operating it.
In the modification of my said invention shown in Figure 4, the reservoir B is
connected with the receptacle D by means of a syphon consisting of a tube E and a
cap or dome F, the said cap or dome being attached to the spindle L' of a plug or
valve L for closing the said tube E, so that, when the said plug or valve is raised,
the cap or dome F will be raised therewith to permit the oil to flow freely beneath
it. The receptacle D is provided with a vent-tube G provided with a cap or
cover G¹ for the purpose above specified.
In other instances, I provide for arresting the flow of the oil to the flame by the
compression of the wick by means of a suitable device, such as a spring clip or pair
of jaws which can be readily adjusted through the medium of an eccentric, a lever

page_text: or the like, to apply pressure to the wick for the purpose of extinguishing the
flame, or to remove such pressure from the wick when the lamp or stove is to be
re-lighted.
Or I can, if desired, provide for lifting the wick out of the oil in the reservoir
without altering its position in the wick-tube.
My invention affords the following advantages, viz. :-The exhaustion of the oil
from the wick allows the latter to be burnt down to the level of the top of the
burner, and this is effected so evenly or uniformly that no further trimming of the
wick is necessary; the irksome task of hand-trimming is thus obviated; moreover
the wick is trimmed more evenly by the burning down of the same than is
practicable by means of scissors or a cloth in the usual manner. By reason of this
even trimming, a brilliant light or a high degree of heat can be obtained, because
the flame can be allowed to rise higher than heretofore without flaring or smoke.
Moreover there is no liability to the falling of charred wick from the burner and
to the consequent smoke, smell and soiling of the surface and clogging of the
passages of the lamp or stove.
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 :-
First. An oil-lamp or lamp-stove in which suitable provision is made for
extinguishing the flame or flames by depriving the same of oil, substantially as
hereinbefore described.
Second. The combination, with the oil-reservoir of a lamp or lamp-stove, of an
auxiliary chamber or receptacle connected therewith by a tap or cock, a syphon, or
other suitable device, and provided with a suitable vent, substantially as, and for
the purpose, above specified.
Third. The combination, with the wick-tube of an oil-lamp or lamp-stove, of
means for compressing the wick when required, substantially as, and for the
purpose, above specified.
Fourth. A lamp constructed with my improved means for extinguishing the
flame thereof, substantially as described with reference to either of the figures of
the accompanying drawing.
Dated the 11th day of May 1902
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C.,.
Agents for the Applicant.