An Improved Extinguisher for Oil Lamps with Flat Wicks.
Year: 1889

page_text: Date of Application, 13th Sept., 1889
Complete Specification Left, 15th Jan., 1890-Accepted, 22nd Feb., 1890
PROVISIONAL SPECIFICATION.
An Improved Extinguisher for Oil Lamps with Flat Wicks.
I, FREDERICK JOHNSON ALLISON, of 23 Gordon Street Plaistow, in the County of
Essex, Paint Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a simple and inexpensive device to be applied to oil lamps
with flat wicks for the purpose of extinguishing the flame in an automatic manner
should the lamp be upset.
According to this invention I construct a sleeve or short tube of a suitable size and
shape to slide easily on the outside of the wick tube. Each longitudinal side of the.
said sleeve is turned over outwardly so as to form a bearing for a pin on to which is
pivoted a side wing or flap. These flaps are provided with L pieces at their ends by
which they are secured to the pivot pins and with a tongue piece on their bottom edge.
The said flaps are so pivoted that they tend to close over the top of the sleeve.
When the sleeve is on the wick tube, the tongue pieces bear against the base of the
burner and keep the flaps inclined towards the wick. Should the lamp he upset the
sleeve will slide towards the top of the wick tube and one of the flaps will turn on
its pivot and close over the top of the wick tube, thus extinguishing the flame. In
this position the tongue pieces abut against the inside of the burner cone and prevent
the sleeve slipping entirely off the wick tube. When the lamp is righted again, the
sleeve will fall down and the extinguishing device will assume its normal position.
D
1200
:
CASTLE SMITH,
Per F. W. Golby,
"Invention" Office, 54, Fleet Street, London, E.C., Agent for the Applicant.
COMPLETE
SPECIFICATION.
An Improved Extinguisher for Oil Lamps with Flat Wicks.
I, FREDERICK JOHNSON. ALLISON, of 23 Gordon Street, Plaistow, in the County of
Essex, Paint Manufacturer, 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 a simple and inexpensive device to be applied to oil lamps
with flat wicks for the purpose of extinguishing the flame in an automatic manner
should the lamp be upset.
According to this invention, I construct a sleeve or short tube of a suitable size and
shape to slide easily on the outside of the wick tube. Each longitudinal side of the
said sleeve or short tube is turned over outwardly so as to form a bearing for a pin on
to which is pivoted a side wing or flap. These flaps are provided with L pieces at
their ends by which they are secured to the pivot pins and with a tongue piece on
their bottom edge. The said flaps are so pivoted that they tend to close over the top
of the sleeve or short tube.
When the sleeve or short tube is on the wick tube, the tongue pieces bear against
the base of the burner and keep the flaps inclined towards the wick. Should the lamp
be upset, the sleeve or short tube will slide towards the top of the wick tube and one'
of the flaps will turn on its pivot and close over the top of the wick tube, thus
extinguishing the flame. In this position the tongue pieces abut against the inside
of the burner cone and prevent the sleeve or short tube slipping entirely off the wick
tube. When the lamp is righted again, the sleeve or short tube will fall down and the
extinguishing device will assume its normal position.

page_text: And in order that my invention may be more fully understood and carried into
practice, I will now proceed to describe the same with reference to the accompanying
drawings in which similar letters are used to indicate corresponding parts throughout.
Figure 1 is a partly sectional elevation of a lamp burner fitted with my improved
extinguisher; Figure 2 shews the same when upset; Figure 3 is an enlarged plan of
the metal blank from which the sleeve or short tube is formed; Figure 4 is an
enlarged plan of the flap or wing blank; Figures 5 to 7 shew a modified form of
my extinguisher.
The extinguisher is made in varying sizes to suit the different sizes of the wick
tubes of ordinary lamps, and the blanks are struck or stamped from sheet metal,
preferably sheet tin, and are scored as indicated by the dotted lines in Figures 3
and 4; the pivot pins are preferably made of wire of suitable gauge. The sleeve
or short tube blank (Figure 3) is first bent along the lines ab into the required
rectangular form and the prolongations A of its longitudinal sides C are then turned
outwards along the lines a a and over the pivot pins B so as to firmly secure the same,
and are then pressed down close on to the sides C. The ends of the pins B project
slightly to form pivots for the wings. The projections D on the flap or wing blank
Figure 4 are turned up at right angles, and the holes E therein are passed over the
projecting ends of the pins B, which ends are afterwards burred over to prevent the
wings from coming off the pivot pins.
In the form of extinguisher shewn in Figure 1 the tongue pieces F on the wings
rest upon the base J of the burner, and the flaps are inclined towards the wick tube H.
Should the lamp be upset, as shewn in Figure 2, the sleeve or short tube G will slide
over the wick tube H and one of the wings K will close over the top of the wick tube
and extinguish the light. The extinguisher will be prevented from falling off the
wick tube by one of the tongue pieces F abutting against the inside of the burner
cone L as shewn in Figure 2.
In the modified form of my invention shewn in Figures 5 to 7, the sleeve or short
tube G is made somewhat longer so as to reach from near the top to the bottom of
the wick tube and rest upon the base J of the burner. The tongue pieces F are also
slightly bent inwards so as normally to rest against the outside of the sleeve or short
tube G and keep the wings K vertical. The normal position is clearly shewn in the
sectional elevation Figure 5 and in the enlarged detail view Figure 6. Should the
lamp provided with this extinguisher be tilted or upset, one or other of the wings K
will close down upon the top of the wick tube as shewn in Figure 7 and extinguish
the light.
It will be seen that this invention consists of a combination of parts forming
an inexpensive and simple extinguisher which is applicable to all oil lamps with
flat wicks.
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) An extinguisher for flat wick oil lamps consisting of the combination of parts
constructed substantially as herein described in respect of the several modifications
shewn in the annexed drawings.
(2) The use in an extinguisher of a sleeve or short tube G with side flaps or
wings K pivoted thereto and provided with tongues F, the sleeve or short tube being
so made as to slide freely on the wick tube H, constructed and operating substantially
in the manner and for the purpose described and illustrated in the accompanying
drawings.
Dated this 14th day of January 1800
CASTLE SMITH,
Per F. W. Golby,
'Invention" Office, 54, Fleet Street, London, E.C., Agent for the Applicant.