Improved Appliances for Automatically Extinguishing Oil Lamps when Upset.
Year: 1893

page_text: Date of Application, 11th Sept., 1893-Accepted, 14th Oct., 1893
COMPLETE SPECIFICATION.
Improved Appliances for Automatically Extinguishing Oil Lamps
when Upset.
.
I, FRANCIS VERNON SMYTHE, of Woodside, Highland Road, Bromley Park,
Kent, 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 :-
The object of this invention, is to arrange a cup and ball appliance, said ball
being in combination with an additional tube encircling the wick tube and a cap or
closer, both of which more simultaneously when the ball is released for extinguishing
the flame, should the lamp be upset by accident or otherwise. The action of the
ball is automatic and by its connection with a small length of cord or chain when it
is released from the cup, the extinguisher is kept on or over the wick until replaced
by hand, or until the ball is replaced, the cup forming a lead for the coupling as
well as a rest for the ball.
I have shown my invention in the annexed drawings as applied with a single
wick burner and also with a duplex wick burner.
Figure 1 is a sectional elevation of a single wick burner and Figure 2 a plan
with the dome removed.
Figure 3 is a sectional elevation through the line ab of Figure 4 and Figure 5 is
a sectional elevation through the line cd of Figure 4. Figure 6 is a diagram
showing the arrangement of the wires by which the additional tubes are raised by
the side cheeks of the topping caps.
According to Figures 1 and 2, A is the burner. B the wick tube. C is the
additional tube encircling same. This additional tube is supported by projecting
pins from the saddle piece D which is pivoted on the wire E attached to the burner
shell A. The back portion F of the saddle rests upon an arm G of the topping
cap H, this being pivoted on the wire I also attached to the burner shell A. The
lower end of the lever or arm G has connected to it a cord J which passes through
a central hole in a socket or cup K and is attached to a weighted ball L, so that
should the ball from any cause fall out of the cup K it puts a strain upon the
cord J and raises the lever G to lower the cap H and simultaneously raises the
additional tube C, so that the exposed part of the wick becomes boxed in and
the flame suffocated.
A corresponding action takes place with the duplex lamp shown in the other
figures on the drawings, the arrangement of the parts being slightly different.
According to Figures 3, 4, and 5, the lever G is pivoted to the burner shell at I,
and it has a fork slot at M for the projecting pins of the additional tubes C to rest
in the lever G between the two wick tubes and with the pin N attached to both
additional tubes C of this lamp, so that both of the additional tubes C, C, can be
acted on at one time.
The topping caps H, H, of these form part of end cheeks P, P, and the additional
tubes have in addition to their supporting pin N, other pins or wires Q, Q, one on
each side of curved parts of the cheeks P, P, so that when the pin N is raised by
the lever G, the outer pins Q, Q, ride against the outer curved portion of the
cheeks P, P, and simultaneously with the lift of the additional tubes, the topping
caps Hare moved over to shut in the two wicks in a similar manner to that
described with reference to Figure 1, the inside wires Q, Q, forcing the topping
caps away from over the wicks when the additional tubes are allowed to fall. The
topping caps H and side cheeks P are loosely supported by the wires R, R, so that
they have free movement for the required motion.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The apparatus for effecting an automatic extinguishing of a lamp flame by the
combined action of additional tubes and a topping cap, whether for a single
wick lamp, or a duplex lamp, as above described, and as shown in the annexed
drawings.
2. In a lamp of the kind described, the employment of a pair of wires Q, Q, at
different elevations on the additional tube for operating the side cheeks and the
topping cap as and for the purpose described.
Dated this 11th day of September 1893
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said F. V. Smythe.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said F. V. Smythe.