Improved Automatic Apparatus for Extinguishing the Flame of Oil-lamps.
Year: 1890

page_text: Date of Application, 6th Feb, 1890
Complete Specification Left. 25th Oct.. 1890-Accepted, 29th Nov., 1890
PROVISIONAL SPECIFICATION.
Improved Automatic Apparatus for Extinguishing the Flame of
Oil-lamps.
JAMES STARK of 220 Pentonville Road London in the County of Middlesex,
Gentleman, do hereby declare the nature of this invention to be as follows:-
A hood or collapsing cap is formed of two pieces of thin metal pivoted together
at their base with projecting pins and slots so adjusted that it is open at the upper
edge or top of the hood or cap as long as the lamp is upright, but will instantly close
upon the tipping of the lamp out of the perpendicular.
This cap or hood is made a little longer than the wick holder and made to rest
upon the base of the wick holder, and is so balanced that if the lamp should be
thrown out of the perpendicular it will instantly collapse over the top of the wick and
extinguish the flame.
Dated this 6th dow of Waha 1000
COMPLETE SPECIFICATION.
Improved Automatic Apparatus for Extinguishing the Flame of
Oil-lamps.
I, JAMES STARK, Manufacturer, of 220, Pentonville Road, in the County of
London, do hereby declare the nature of my invention and in what manner the same
is to be performed, to be particularly described and ascertained in and by the following
statement:-
Automatic lamp-extinguishers, as hitherto made, have generally the drawback,
that they require an alteration of the burner, or a specially constructed lamp, and
cannot, therefore, be applied without considerable expense. My invention has for its
object, to provide an automatic extinguisher, which can be applied to any ordinary
flat-wick burner, without changing the shape or construction of the same, which
operates without balance weights or balls, and combines the greatest simplicity with
certainty of action.
In the following description reference will be made to the annexed drawing, in
which Figs. 1 and 2 are sections of an ordinary flat-wick burner provided with an
automatic extinguisher embodying my invention, while Figs. 3, 4 and represent
the extinguisher separately in plan, end elevation and side elevation.
The extinguisher consists of a pair of perforated caps A, A, hinged together at
their base by means of a pair of pins B, B, parallel with the edge of the wick-
tube D.
These caps are made of such a shape and size, as to fit over the wick tube, without
being fixed thereto, and are provided with short feet a, which, in the normal position
of the extinguisher, rest upon the burner floor, as shown by Fig. 1, so as to keep the
cap in unstable equilibrium, without coming into contact with the wick, or preventing
the access of air to the same.
The extinguisher is thus entirely supported by the burner floor and can be easily
applied to any burner of corresponding size, without requiring any instruments or
skilled labour.
If the lamp is suddenly tilted, the extinguisher will lose its equilibrium, the upper
cap will approach the lower one by turning on its hinges, until the burner assumes
the position shown by Fig. 2, in which the wick is covered by the extinguisher, and
the lower cap rests against the inside of the burner dome F.
Price fd21

page_text: Each cap is provided with an aperture of any suitable shape, or with a number of
perforations, through which the necessary air may pass to the flame.
The side view Fig. 5 shows a star-shaped air passage e.
The extinguisher may be made as follows:-
Each cap is stamped or pressed from a piece of sheet metal, so as to form an
approximately rectangular cup, but the lower side or flange is cut out, so as to leave
at the ends a pair of projecting hinge-pieces for the hinge pins, and in the centre a
projecting lug, which is then bent outward, so as to form the projecting foot a
mentioned above.
Having now particularly described the nature of my invention and in what manner
the same is to be performed, I declare, that I claim :-
1. The combination of a flat-wick lamp burner, with an automatic extinguisher
consisting of a pair of loose caps A adapted to slide over the wick-tube and hinged
together at their base, the said extinguisher being only supported by the burner floor
and provided with a pair of feet a adapted to support the extinguisher in a position of
unstable equilibrium, substantially as described.
2. An automatic extinguisher for flat-wick oil lamps, consisting of a pair of
perforated caps A adapted to fit over the wick tube and hinged together at their base,
each cap being stamped or pressed from a piece of sheet metal, and the lower part
being cut out, so as to leave at the ends a pair of projecting hinge pieces and in the
centre a projecting lug, which is then bent outward to form a foot a, substantially as
described.
Dated this 5th day of Sentember 1800