Year: 1896

page_text: Date of Application, 23rd Jan., 1896.
Complete Specification Left, 30th Sept., 1896-Accepted, 5th Dec., 1896
We, WILLIAM HEWSON of Leather Lane, Dale Street Liverpool, Printer, and
PHILIP CONWAY DAVIES of 72 Gwladys Street, Liverpool, Commission Agent,
do hereby declare the nature of this invention to be as follows:-
This invention has reference to oil lamps, and has more particularly for its object
to provide improvements in connection with the ordinary petroleum lamp by which
they are rendered more safe than those which exist at present.
My invention will be described as applied to the ordinary reservoir type with
burner on top of the reservoir, and a stem between such reservoir and the base, it
being, however, at the same time understood that the different improvements
hereunder may be applied wherever applicable, either separately or in combination,
to lamps which differ as regards general arrangement, to that more particularly
referred to.
According to this invention, in connection with the spindle for turning up the
wick or wicks, we provide a worm or equivalent device by which under ordinary
circumstances, it can only be turned back a certain. number of rotations, that is,
only so many as will not cause the wick to pass down below the wheels by which
the wick is turned up and down. By this means, the wick cannot be turned down
into the oil reservoir. A further improvement consists in providing wicks which
abut against the burning wicks where they enter the burner wick tubes; by which
means the escape of oil past the wicks through these tubes is prevented, and oil
feeding auxiliaries through the wicks provided.
As a means of automatically extinguishing the flames of the lamp, should it be
upset or dropped, or under abnormal conditions, we provide a weight which
normally rests upon the table or support of the lamp, and which is connected by
means of a chain outside the stem, and extending to the extinguishing device
through or outside the oil reservoir. This chain will be grasped by the hand when
the lamp is ordinarily moved it being along the side of the stem, but when the
lamp is not moved, say knocked over, or falls, the chain not being grasped is pulled
down by the weight and the flame is put out by the extinguisher.
The air is supplied to the reservoir through a hole outside the burner (say in the
oil filling plug) and this hole is adapted to be closed by a valve operated by the
chain when the weight falls, thereby preventing the oil running out when the lamp
is upset.
In some cases, we provide outside the oil reservoir, and also outside the base, an
air filled or pneumatic tube by which liability of breakage of a lamp is diminished
when the lamp falls or is knocked over.
Dadh: 00-11-
1000
CHEESBROUGH & ROYSTON,
15 Water Street, Liverpool, Applicants' Patent Agents.

page_text: Improvements in Oil Lamps.
We, WILLIAM HEWSON of Leather Lane, Dale Street, Liverpool, Printer, and
PHILIP CONWAY DAVIES of 72 Gwladys Street, Liverpool, Commission Agent,
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 has reference to oil lamps, and has more particularly for its
object to provide improvements in connection with the ordinary petroleum lamp,
by which they are rendered more safe than those which exist at present.
Our invention will be described as applied to the ordinary reservoir type of lamp
with burner on top of the reservoir, and a stem between such reservoir and the
base.
According to this invention, in connection with the spindle for turning up the
wick or wicks, we arrange it so that under ordinary circumstances, it can only be
turned back a certain number of rotations. By this means, the wick cannot be
turned down into the oil reservoir.
As a means of automatically extinguishing the flame of a lamp, should it be
upset or dropped, or under abnormal conditions, we provide a weight which
normally rests upon the table or support of the lamp, and which is connected by
means of a chain outside the stem, and extending to the extinguishing device
through or outside the oil reservoir. This chain will be grasped by the hand when
the lamp is ordinarily moved, it being along the side of the stem, but when the
lamp is moved, say knocked over, or falls, the chain, not being grasped, is pulled
down by the weight, and the flame is put out by the extinguisher.
The air is supplied to the reservoir through a hole outside the burner (say in the
oil filling plug) and this hole is adapted to be closed by a valve operated by the
chain when the weight falls, thereby preventing the oil running out when the lamp:
is upset.
In some cases, we provide outside the oil reservoir, and also outside the base, an
air filled or pneumatic tube, by which liability of breakage of a lamp is diminished
when the lamp falls or is knocked over.
Our improvements in oil lamps, involving the construction, and adapted to act as
described, are shewn in the accompanying drawings.
In these drawings,
Figure 1 is an elevation partly in section, and Figure 2 is a plan shewing a lamp
provided with the improvements.
Figure 3 is a side elevation, and Figure 4 an end elevation, both partly in
section, shewing the burner and extinguishing device of the lamp.
Figure 5 is a plan of a modification of the closing valve.
Referring now to the drawings, and more particularly to Figures 1 to 4, the
lamp shewn consists substantially of a reservoir a, with a burner, of the duplex
type, b, on the top of the reservoir, and a stem c between the reservoir and the
base d. e el denote the spindles for turning up or down the wicks ff'. 9 g are
the wick tubes; these are preferably continued below the burner for some
distance, so that they extend well into the reservoir a.
With reference to the means of automatically extinguishing the lamp, h denotes
the weight which, in this case, is provided and contained in the base d, and which
normally rests upon the table or support of the lamp. i is the chain which comes
outside the lamp stem c and through the reservoir a, and connects the weight h
with the extinguishing device lever 1, which works, through its arm and cross
bar, the sliding sleeves k k¹ on the wick tubes g 9. m denotes the air or oil

page_text: supply hole; this hole is adapted to be closed by a valve n on the lever j, which
covers the hole m when the weight h pulls down the lever j.
The reservoir a, and the base d, are preferably provided with pneumatic
tubes p pl, to protect the lamp if it is overturned.
In the modification shewn in Figure 5, the valve n is arranged to slide over the
air hole m, and is worked by a short chain attached to the chain i.
The action of the improved lamp is as follows: The chain i, with the stem c, is
grasped by the hand when the lamp is ordinarily moved, and the weight his
inoperative, but when the lamp is, say, knocked over, or falls, the chain i, not being
grasped, is pulled down by the weight h, and the lever j is operated and causes the
sliding sleeves to rise up the wick tubes g g and extinguish the flame of the
wicks ff, and at the same time, and by the same action, the air hole m is closed
by the valve n, and the oil is prevented from escaping from the reservoir.
Although we have shewn our improvements applied to an ordinary reservoir
lamp, we would have it understood that the said improvements may be applied,
wherever applicable, to lamps which differ as regards general arrangement, to
that more particularly referred to.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. An oil or spirit lamp having automatic extinguishing means, comprising a
weight, substantially as described, to remain inactive and the lamp alight when
lifted or raised by the hand normally, or in the usual way, and to cause the lamp
to be extinguished when or if it is moved or raised in an irregular or abnormal
manner for the purposes specified.
2. An oil or spirit lamp, comprising an oil reservoir and burner, a flame
extinguishing device, a weight by which the extinguishing device is actuated, and
a chain or cord connecting said extinguishing device and weight; arranged and
operating substantially as set forth.
3. In an oil or spirit lamp having an automatic extinguishing means, the arrange-
ment of extinguishing device, air vent, and weight, and connecting cord or chain
and parts by which the air vent is closed simultaneously with the operation of the
extinguisher; substantially as set forth.
4. The oil or spirit lamp having the extinguishing device, and means for
actuating same, arranged and disposed thereon, and adapted to operate as set forth
with reference to and shewn in the drawings.
Dated this 28th day of Sentember 1906
CHEESBROUGH & ROYSTON,
15 Water Street, Liverpool, Applicants' Patent Agents.