Improvements in Automatic Extinguishers for Oil Lamps.
Year: 1895

page_text: Date of Application, 22nd Nov., 1895
Complete Specification Left, 21st Aug., 1896-Accepted, 26th Sept., 1896
PROVISIONAL SPECIFICATION.
Improvements in Automatic Extinguishers for Oil Lamps.
I WILLIAM EVANS of 54 Tatton Street, Salford, in the County of Lancaster,
Commercial Traveller, do hereby declare the nature of this invention to be as
follows:-
My said invention relates to automatic extinguishers for oil lamps, whereby the
lamp is extinguished and accidents prevented if the lamp should happen to be
overbalanced or capsized. According to my invention I arrange a double lever,
pivotted loosely to the head or casing surrounding the burner. One end of this
lever engages with a pin or projection or pins or projections on the extinguisher
which might be of any suitable form and beneath the same end of the lever I place
a spring the constant tendency of which is to operate the extinguisher so as to put
out the lamp.
To hold this spring lever in place and so prevent the operation of the
extinguisher, except when necessary, 1 prolong the other end of the lever past the
pivot and support it against the pressure of the spring by an upright strut weighted
at the lower end and hung or supported in a ball socket or other suitable free
support, a ball to fit the socket being formed on the said strut. The socket is
supported by an extension from the side of the casing or other fixed part. The
upper end of the strut is reduced to a point which comes beneath the small flat
end of the extension of the spring lever. The parts are so arranged that so long
as the lamp is standing undisturbed or so long as it is handled with care the
weighted strut will not swing clear of the spring lever which is thus upheld so as
to keep the extinguisher from acting. But should the lamp be knocked over or
roughly handled, the weighted strut will swing in its socket or free support to any
side so as to move the pivot from beneath the end of the spring lever, whereupon
the spring acts so as to operate the extinguisher and put out the lamp. I do not
confine myself to the exact indicated means for suspending the strut or supporting
or holding the spring lever, as these might be varied. For example a double cone
and socket might be used instead of the ball and socket or the strut might be hung
on a knife edge or centre pivot so as to allow freedom of motion in all directions
and the means for upholding or restraining the spring lever might also be modified,
although I consider the pivotted strut supporting the lever to be the most suitable.
In all cases however, I use the weighted or counterbalanced strut or bridle for
upholding or restraining the spring extinguisher lever. When it is wished to
extinguish the lamp, a touch on the sustaining strut will suffice to release the
extinguisher lever and put out the lamp. There is no danger of the automatic
extinguisher being left unset through carelessness, as the lamp cannot be lit until
the appliance has been set.
Deted this 21st dan of Nazemben 100%

page_text: Improvements in Automatic Extinguishers for Oil Lamps.
I WILLIAM EVANS of 54 Tatton Street, Salford, in the County of Lancaster,
Commercial Traveller, 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 and accompanying drawings
-
My said invention relates to automatic extinguishers for oil lamp burners
whereby the flame is extinguished and accidents prevented if the lamp should
happen to be overbalanced or capsized. The invention will be best understood by
a reference to the annexed illustrative drawing which is an exterior view of the
upper portion of a lamp burner. According to my invention I arrange a double
lever a pivotted loosely at b to the body or casing c surrounding the burner d.
One end of this lever a engages in the ordinary and well known manner with the
clips of the extinguisher which might be of any suitable form, a spring being
situated beneath the same end of the lever the constant tendency of which is to
operate the extinguisher so as to put out the flame.
It will be understood that such a spring lever and extinguisher is well known
and in common use.
To hold this spring lever a in place and so prevent the operation of the
extinguisher, except when necessary, I prolong the other end of the lever a past
the pivot b and support it against the pressure of the spring by an upright strut e
weighted at the lower end by the ball and hung or supported in a ball socket f
or other suitable free support, a ball g to fit the socket being formed on the said
strut e. The socket is supported by an extension f¹ from the side of the body or
casing or other fixed part. The upper end of the strut e is reduced to a point or
rounded surface as required which comes beneath the small flat or hollowed end a¹
of the extension of the spring lever a. The parts are so arranged that so long as
the lamp is standing undisturbed or so long as it is handled with care the weighted
strut e remains in a vertical position as indicated in full lines and will not swing
clear of the spring lever a which is thus upheld so as to keep the extinguisher
from acting. But should the lamp be knocked over or roughly handled, the
weighted strute will swing in its socket or free support to any side so as to move
the point from beneath the end of the spring lever, whereupon the spring acts so
as to operate the extinguisher and put out the flame, the aforesaid parts assuming
the position indicated in dotted lines. I do not confine myself to the exact
indicated means for suspending the strut or supporting or holding the spring lever,
as these might be varied. For example a double cone and socket might be used
instead of the ball and socket or the strut might be hung on a knife edge or centre
pivot so as to allow freedom of motion in all directions and the means for upholding
or restraining the spring lever might also be modified, although I consider the
pivotted strut supporting the lever to be the most suitable. In all cases however,
use the weighted or counterbalanced strut or bridle for upholding or restraining
the spring extinguisher lever. When it is wished to extinguish the flame, a touch
on the sustaining strut will suffice to release the extinguisher lever and put out the
light. There is no danger of the automatic extinguisher being left unset through
carelessness, as the lamp cannot be lit until the appliance has been set.
The invention is applicable to oil lamp burners whether with flat, semi-circular
or circular wicks.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is.
The improved automatic lamp burner extinguisher substantially as described and
DOWN.
Dated this
day of August 1896.
For the Applicant,
E. K. DUTTON & Co.,
5 John Dalton Street, Manchester, Chartered Patent Agents.