Year: 1887

page_text: Date of Application, 18th June, 1887
Complete Left, 19th Mar., 1888
Complete Accepted, 20th Apr., 1888
I, ABRAHAM MARTIN of 177 Aston Lane Birmingham, in the County of Warwick,
Engineer, do hereby declare the nature of this invention to be as follows:-
This Invention relates to an extinguisher for lamps having a circular wick, and
consists of a disc having an annular groove which corresponds to the wick casing
and, when lowered, fits upon the top thereof so as to extinguish the flame by
depriving it of oxygen without touching or injuring the wick. This extinguisher is
attached to a rod passing down through the tubular wick casing and through the
lamp reservoir and it may be so arranged as to automatically extinguish the flame
should the lamp be capsized, or it may be lowered by band whenever it is required
to extinguish the lamp.
A. MARTIN.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: I, ABRAHAM MARTIN, of 177 Aston Lane, Birmingham, in the County of Warwick,
Engineer, 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 an extinguisher for a circular wick lamp and consists of
an annular cap which corresponds to the tubular wick casing and when lowered fits
upon the top thereof so as to extinguish the flame by depriving it of oxygen without
touching the wick. In its normal position the cap stands above the wick tube and
forms a mushroom head within the annular flame which is thereby caused to assume
a bulbous form. This extinguisher is attached to a rod passing down through the
wick casing and through the lamp reservoir and it may be lowered by hand whenever
it is required to extinguish the flame or it may be so arranged as to automatically
extinguish the flame should the lamp be capsized.
Reference is to be had to the accompanying drawing forming part of this specifi-
cation wherein Figure 1 represents a part sectional elevation of a lamp provided with
the improved extinguisher the extinguisher being raised and the lamp lighted.
Figure 2 is a section of the wick casing showing the extinguisher closed down over
the wick. Figure 3 is a top view of the extinguisher. Figure 4 is a part sectional
elevation of a suspended lamp. The same letters of reference indicate the same parts
in all the figures.
A is the extinguisher being a disc of sheet brass stamped up to the form of an
annular groove a forming a cap adapted to fit loosely over the top of the wick
casing B which is provided with an abutment or shoulder 6 for the cap to rest on
when lowered, as shewn in, figure 2, the cap fitting sufficiently closely over the wick
(without touching it) to extinguish the flame without being liable to seize on the
wick casing by the contraction of the cap on cooling. The cap is free to pass through
the aperture of the air cone C and is carried by a rod D working in central guides
within the air passage of the wick casing which extends through the bottom of the oil
reservoir and the cap is normally held up in the position shewn either by a spring E
as in figure 1, or by a spring catch as in figure 4, or by the lower end of the rod
resting on the table or other support in the case of an automatic extinguisher. In
figure 1, the rod is provided with a handle d passing through a slot in the casing to
enable the extinguisher to be drawn down by hand when desired.
Figure 4 shews a suspended lamp in which the oil reservoir or body of the lamp
proper is removable from its cradle or suspension F for the purpose of filling and in
this case the rod D extends down through an opening in the bottom of the cradle and
terminates in a knob by which the extinguisher may be raised or lowered by hand.
It is held in either position by a spring catch g and when removed and stood on a
table for the purpose of filling the reservoir, the knob is pushed up into the lower ond
of the central air tube.

page_text: In the case of an automatic extinguisher, the usual arrangement may be adopted
for example, an independent weight placed beneath the foot of a lamp such as shown
in figure 1, and attached by a flexible connection to the lower end of the rod D so
that should the lamp be overturned the weight would remain on the table and
overcome the spring E, thus drawing down the extinguisher. This automatic action
does not however form part of my invention.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed, I declare that what I claim is ;-
The herein described extinguisher for round wick lamps, consisting of an annular
grooved cap adapted to fit over the top of the wick tube as described and normally
held up within the flame so as to act as a spreader therefor, substantially as specified.
Dated this 19th day of March 1888.
A. MARTIN.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.