Improvements in and Applicable to Oil Lamps.
Year: 1888

page_text: Improvements in and Applicable to Oil Lamps.
I, WILLIAM LIGHBODY, of the firm of Thomas Rowatt & Sons, of 9, 10, 11 and 12
Radsworth Street, City Road, in the county of Middlesex, and of 126, Fountain
Bridge, Edinburgh, in the County of Midlothian, Lamp Manufacturers, 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 a lamp the burner of which has an extinguisher of that
class which is designed to automatically extinguish the flame of the lamp in case the
latter is overturned; and has for its chief object to provide an extinguisher which is
simpler in construction and more compact than those heretofore in use.
My said invention consists essentially in the employment of a weight adapted to
slide upon the wick tube of a lamp in such a manner than when the lamp is upset it will
act upon the extinguisher proper and operate the same to extinguish the flame.
In the accompanying drawing
Figure 1 is a sectional view of a lamp-burner provided with an extinguisher con-
structed according to my invention, and,
Figure 2 is a view, similar to Figure 1, illustrating the operation of the
extinguisher.
a indicates a lamp burner of ordinary construction having the wick-tube b and
the dome c.
d, d are flaps which constitute the extinguisher proper. These flaps are hinged or
pivoted to the wick-tube at e and provided with the extensions f, f.
is the weight adapted to slide on the wick-tube b and having two pins or pro-
jections h, h arranged in connection with the extensions ff.
When the lamp is in its normal position the flaps d, d are separated, as shewn in
Figure 1, the weight 9 resting upon a seat and the extensions f, upon the pro-
jections h, h. If, however, the lamp is overturned so that the burner assumes a more
g

page_text: or less inclined position, for instance as shewn in Figure 2, the said weight, owing to
its gravity, will slide upon the wick-tube b the projections h h of the weight bearing
against the extensions f, f of the flaps and closing the same over the wick whereby the
flame is extinguished.
It will be noticed that with this arrangement the extinguisher is entirely concealed
beneath the dome c.
I wish it understood that I do not limit myself to the details of construction herein-
before described as it is obvious that the same can be considerably modified, for
instance, the weight g, instead of being arranged upon the wick-tube may be guided
by guides of any suitable construction.
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 application to a lamp-burner of a sliding weight arranged to operate an
extinguisher when the lamp is upset.
2. The combination with a lamp-burner of a weight arranged to slide on the wick-
tube to operate the extinguisher, substantially in the manner described.
3. The manufacture and use of the improved automatic extinguisher constructed and
arranged to operate substantially as hereinbefore described and illustrated in the accom-
panying drawing.