Improvements in or Applicable to Lamps for Burning Hydro-carbon Oils and in Glass Chimneys for the same.
Year: 1886

page_text: Date of Application, 10th Dec., 1886
Complete Left, 23rd Sept., 1887
Complete Accepted, 25th Oct., 1887
PROVISIONAL SPECIFICATION.
Improvements in or Applicable to Lamps for Burning Hydro-carbon
Oils and in Glass Chimneys for the same.
I, GEORGE FURNACE, of Parker's Yard, High Seaton, near Workington, in the
county of Cumberland, Retired Tea Dealer, do hereby declare the nature of this
invention to be as follows:-
My invention relates to the application to lamps for burning hydro-carbon oils of an
improved device for extinguishing the lamp, a combined safety valve and filling hole
for allowing the gases generated in the oil reservoir to pass off therefrom and the
lamp to be filled without removing the burner, a safety hole or holes formed in the
reservoir for ventilating the same and a means for lighting the lamp without it being
necessary to remove the chimney.
In carrying out my invention the extinguishing device is advantageously con-
structed of a piece of sheet metal of about the width of the wick of the lamp and fixed
at its lower part to the spindle of a key pivotted in a suitable part of the burner; the
upper part is turned over at right angles so as to cover the top of the burner when the
wick has been lowered by the usual key and the device has been operated to extinguish
the lamp.
The safety valve consists of a wire-gauze-covered cap which I screw over a hole
provided in the reservoir; over the said cap I place a removable spring cover which
will allow of the egress of the gases generated in the reservoir, and will at the same
time prevent the oil from running out of the lamp in case the latter should be
upset. By removing the said spring cover and cap the lamp can be filled through the
hole in the reservoir.

page_text: In order to better ventilate the lamp I form a hole or holes through the usual
screwed boss on the top of the reservoir into which the burner is screwed; by this
means I ventilate the reservoir and obviate the risk of sparks from the lamp entering
the reservoir through the said holes, as the latter are situated outside and are protected
by the burner.
In any suitable position in the glass chimneys of lamps I provide a small hole which
will allow of the introduction of a lighted match or the like to light the lamp without
interfering with the steady burning of the flame, thereby avoiding the necessity of
removing the chimney.
000
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.

page_text: Improvements in or Applicable to Lamps for Burning Hydrocarbon
Oils and in Glass Chimneys for the same.
I, GEORGE FURNACE, of 'Parker's Yard, 'High Seaton, near Workington, in the
County of Cumberland, 'Retired Tea Dealer, 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:-
My invention relates to the application to lamps for burning hydro-carbon oils of
an improved device for extinguishing the lamp, a combined safety valve and filling
hole for allowing the gases generated in the oil reservoir to pass off therefrom and
the lamp to be filled without removing. the burner, a safety hole or holes formed in the
reservoir for ventilating the same and a means for lighting the lamp without it being
necessary to remove the chimney.
In order to enable my invention to be fully understood I will describe how it can
be carried into practice by reference to the accompanying drawing in which
Figure 1 represents a vertical section of part of a.hydro-carbon oil lamp and glass
chimney constructed according to my invention.
Figures 2 and 3 are sectional views of a lamp burner illustrating a modified form
of my improved extinguishing device.
Figure 4 is a plan of the lamp shewing my safety valve removed.
Figure 5 is a similar view of the reservoir of the lamp with the safety valve.in
working position.
Figure 6 is a detached view of a part of the valve.
Similar letters in all the figures represent similar parts.
In carrying out my invention the extinguishing device is advantageously con-
structed, as shewn in figures 1 and 4, of a piece of sheet metal a b c of about the
width of the wick d of the lamp and fixed at its lower part c to the spindle e of a key f
pivotted in a suitable part of the burner as shewn; the upper part a of the piece of
sheet metal is turned over at right angles so as to cover the top of the wick tube g
when the wick d has. been lowered by the usual key h and the device has been operated
to extinguish the lamp as clearly shewn by the full lines in figure 1, the dotted lines in
the same figure indicating the position of the extinguisher when removed to allow the
lamp to be lighted.
The extinguishing device illustrated in figures 2 and 3 is similar to that
herein before described and shewn in figures 1 and 4 except that the extinguisher
is made in two parts a b c and a' b¹ c¹, the parts a and a² of which are formed with the
lower edges of the sides at right angles to the parts bb' respectively and extend
upwards so that when closed together as shewn at figure 3, the vertical edges of the
sides as well as the top edges meet and so extinguish the flame of the lamp.
The two parts of this extinguisher are fixed to spindles ; which may be
advantageously operated for extinguishing the lamp by the means shewn in the
drawing. The two parts are moved into their open position as shewn in figure 2 by

page_text: means of a spring k represented in dotted lines and secured at its ends to two
extensions of the spindles i and j respectively the said extensions being situated
outside the burner and forming levers whereby the spindles and extinguisher can be
operated by the finger and thumb by pressing the levers towards each other the
extinguishers being thereby moved into the position shewn at figure 3.
The safety valve consists of a wire-gauze-covered-cap m figures 1, 4 and 6 which
I screw over a hole n provided in the reservoir o; over the cap m I place a removeable
spring cover p, figures 1, 4 and 5 which will allow of the egress of the gases generated
in the reservoir and will at the same time prevent the oil from running out of the
lamp in case the latter should be upset. If the spring cover p be removed by first
moving the spring 9 aside and then turning the cover back on its hinge g¹ as shewn
in figure 4 and the cap m be then unscrewed the lamp can be filled through the hole n
in the reservoir o.
In order to better ventilate the lamp I form holes r, r, as shewn in figures 1 and 5,
(or a single hole) through the usual screwed boss s on the top of the reservoir o into
which the burner is screwed; by this means I ventilate the reservoir and obviate the
risk of sparks from the lamp entering the reservoir through the said holes, as the
latter are situated outside and are protected by the burner.
In any suitable position in the glass chimneys of lamps I provide a small hole tas
shewn in figure 1 which will allow of the introduction of a lighted match or the like
to light the lamp without interfering with the steady burning of the flame, thereby
avoiding the necessity of removing the chimney u.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
1. The improved devices for extinguishing the flame of lamps for burning
hydro-carbon oils, as hereinbefore described and represented in figures 1 and 4 and in
figures 2 and 3 of the accompanying drawing.
2. In a lamp for burning hydro-carbon oils a safety valve applied to the oil
reservoir substantially as and for the purpose hereinbefore described.
3. Providing lamps for burning hydro-carbon oils with a safety valve for the
purpose set forth the said valve forming a cover for a hole in the oil reservoir through
which the lamp can be filled without removing the burner substantially as hereinbefore
described.
4. Forming the oil reservoirs of lamps for burning bydro-carbon oils with safety
ventilating holes substantially as hereinbefore described and illustrated in figures 1
and 5 of the accompanying drawing.
5. Providing the glass chimneys of lamps with a small hole to allow of the
introduction of a lighted match or the like to light the lamp substantially as
hereinbefore described with reference to figure 1 of the drawing.
6. The improved lamps for burning hydro-carbon oils hereinbefore described with
reference to the various figures of the accompanying drawing.
Dated the 23rd day of September 1887
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.