Apparatus for Extinguishing Lights at a Predetermined Time.
Year: 1897

page_text: Date of Application, 17th Mar., 1897
Complete Specification Left, 11th Nov., 1897-Accepted, 16th Apr., 1898
Apparatus for Extinguishing Lights at a Predetermined Time.
I, JOHN GUNNING, of No. 100, Holdenhurst Road, Bournemouth, in the County
of Hants, Ironmonger, do hereby declare the nature of this invention to be as
follows:-
My invention relates to apparatus for extinguishing lights, at a predetermined
time.
For this purpose, I provide suitable clockwork arranged with a detent appliance
which can be set at a predetermined time, so that when that time arrives this
detent acts on a valve or cock in a gas service pipe or on a cut off switch in the
conductor for electrical lights thus causing their extinction.
Dated this 17th day of March 1897.
ABEL & IMRAY,
Agents for the Applicant.
I, JOHN GUNNING, of No. 100, Holdenhurst Road, Bournemouth, in the County
of Hants, Ironmonger, 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 apparatus for extinguishing lights, at a predetermined
time.
For this purpose, I provide suitable clockwork arranged with a detent appliance
which can be set at a predetermined time, so that when that time arrives this
detent acts on a valve or cock in a gas service pipe or on a cut off switch in the
conductor for electrical lights thus causing their extinction.
The accompanying drawings shew my invention applied to a gas service pipe
for effecting its closure after a predetermined number of hours.
Fig. 1 is a front view of the apparatus. Fig. 2 is a front view with the cover
removed to shew the interior. Fig. 3 is a vertical section on the line 3-3 of
Fig. 1.
The gas service pipe A A¹ has a valve chamber provided with a conical valve B
to the stem of which is attached a head or button C. Within a casing D through
which the service pipe passes is clockwork E driven by a spring Fat a speed
determined by an escapement and balance wheel in the usual way, the speed being
preferably such that the spindle of the main spring revolves once in 24 hours.
Paine 71

page_text: On this spindle is fixed a disc G having a number of holes circularly arranged and
marked with numerals indicating hours. This disc has at one part of its circum-
ference a projection H and on its boss is fitted, free to turn, an arm I which can
be held in any desired position on the face of the disc by a pin J inserted through
it into one of the holes of the disc. Outside the casing 1) a wheel K is fixed on the
spindle of the main spring, and to this wheel may be attached a chain for turning
the wheel from a distance.
The apparatus operates in the following manner:
If it be desired to extinguish the lights after a certain number of hours such as
10 hours, the cover of the casing is opened and the arm I is fixed in a position
shewing at its left side the numeral 10. The cover being then closed the wheel K
is put on the spindle and turned in the direction of the arrow either by hand or,
if it be out of reach, by pulling the chain. By this movement the spring is wound
up and the projection H acting on the head C opens the valve allowing gas to pass
to the burners. On releasing the wheel the disc is turned by the spring in the
direction of the arrow at a speed determined by the clockwork until the arm I
comes to act on the head C pushing it up and so closing the valve and extinguishing
all the lights supplied by the service pipe.
Obviously in case of electric lighting it is only necessary to substitute a suitable
switch for the gas valve, the winding up action moving the switch so as to close
the circuit and the reverse movement of the arm I moving the switch so as to open
the circuit through a conductor which takes the place of the gas service pipe.
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:
Apparatus for extinguishing lights at a predetermined time constructed and
operating substantially as described with reference to the accompanying drawings.
Dated this 11th day of November 1897.
ABEL & IMRAY,
Agents for the Applicant.