An Improvement in Apparatus for Extinguishing Lights after a Predetermined Time.
Year: 1898

page_text: An Improvement in Apparatus for Extinguishing Lights after 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:-
In my Specification No. 7011 of 1897 I have described means of extinguishing
gas or electric lights after a predetermined time, a gas valve being closed or an
electric circuit being opened by an adjustable arm set for the required number
of hours on a disc moved by clockwork. It sometimes happens that of a number
of lights some may have to be extinguished before others, or some or all of a
number of gas lights may have to be lowered sometime before their complete
extinction.
My present invention relates to the modification of the apparatus described
in my previous specification in such a manner as to provide for the extinction
or lowering of lights under the circumstances mentioned.
By way of example, I shall suppose that there are a number of gas lights one
or more of which have to be extinguished or lowered some time before the
others. I provide a stop-cock which governs two passages from the service pipe,
the one passage being so arranged as to be closed or partly closed when the
plug of the stop-cock is in one position, the other passage being then open or
partly closed, and both passages being closed when the plug is turned to another
position.
On the clockwork disc is set, according to my previous specification, an armı
that closes the cock when the predetermined time has expired, I set in advance
of this arm in a place behind it, another arm for the shorter time, and I provide
on the plug of the stop cock two arms one in the plane of each of the arms on
the disc. The shorter time arm, acting first on the plug turns it partly round
so as to lower or extinguish the one set of lights without affecting the other set
or it may be lowering them, these being afterwards extinguished when the
longer time arm acts upon the plug.
The cock may have a passage to supply a pilot light, which remains con-
stantly burning so as to kindle the other lights when they are turned on.
In cases where it is desired to lower a single light after a certain time and to
extinguish it after a longer time, I provide an adjustable by pass from the one
passage of the stop cock to the other, by which a small supply of gas can pass
to the light, after the direct passage to it is closed.
Obviously a slide valve might be substituted for a stop cock this valve com-
manding two ports one leading to the supply of each set of lights.
In case of electric lighting two switches are provided one for each set of the
lights, one of the arms on the clockwork disc is arranged to move the one switch so

page_text: as to extinguish the one set of lights, the other to move the other switch so as
to extinguish the other set of lights.
ABEL & IMRAY,
Agents for the Applicant.
An Improvement in Apparatus for Extinguishing Lights after 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, and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
In my Specification No. 7011 of 1897 I have described means of extinguishing
gas or electric lights after a predetermined time, a gas valve being closed or an
electric circuit being opened by an adjustable arm set for the required number
of hours on a disc moved by clockwork. It sometimes happens that of a number
of lights some may have to be extinguished before others, or some or all of a
number of gas lights may have to be lowered sometime before their complete
extinction.
My present invention relates to the modification of the apparatus described
in my previous specification in such a manner as to provide for the extinction
or lowering of lights under the circumstances mentioned.
By way of example, I shall suppose that there are a number of gas lights one
or more of which have to be extinguished or lowered some time before the
others. I provide a stop cock which governs two passages from the service pipe,
the one passage, being so arranged as to be closed or partly closed when the
plug of the stop-cock is in one position, the other passage, being then open or
partly closed, and both passages being closed when the plug is turned to another
position.
The accompanying drawings shew apparatus modified according to my present
invention.
Figs. 1 and 2 are front and back views, Fig. 3 is a section through the stop-
cock of which Fig. 4 is a sectional plan to an enlarged scale.
As in my former Specification, K is the chain wheel fixed on the axis of the
clockwork spring which is wound up by pulling the chain. G is the disc which
is also fixed on the axis of the spring. A is the gas supply pipe in which is
fitted a two way cock L. On the plug of this cock is fixed a lever having two
arms M and N, and free to turn on the axis of the disc G are two arms I and J
of which I is the longer. These arms can be set on the disc G in positions cor-
responding to any of the hours marked thereon and held by setting screws.
the plug of the cock L there is a longitudinal passage communicating with two
transverse passages of which is the wider, these passages correspond to
ports leading to two gas pipes P and Q, each supplying a burner or set of burners.
The apparatus operates as follows:-
In
The arms I and J being fixed in the desired position on the disc G say I at 7
and J at 3, when it is desired to light the gas the chain is pulled turning the
disc G in the direction of the arrow so that its shoulder H acting on the arm M
turns the plug of the cock so as to put both pipes P and Q in communication
with the service pipe A, both sets of burners being thus supplied. The spring

page_text: having been wound up by the pull of the chain, the clockwork goes on moving
the dise G back until the shorter arm J meeting the arm M after 3 hours turns the
cock partly round closing the passage to and so extinguishing the one set
of lights, but still leaving the passage 2 to Q, for the other set of lights, suffi-
ciently open to keep them full on, or, if desired, less open so as to lower them,
according as the passage 12 is made more or less wide. As the clock continues to
go, the arm I after 7 hours comes to act on the arm N and turns the plug so
far as to extinguish the set of lights supplied by Q. When it is desired to lower
at the earlier hour and extinguish at the later hour, either one single light or
a single set of lights, a plug is inserted at Q so that when the arm J shuts off
the supply to P a supply passes to P' through the passage 12 to which can be
regulated by the screw S, then at the later hour the arm I extinguishes this by
closing the supply at 2, To either or both the pipes P and Q there may be a
small passage, when the plug is in the closed position, so as to maintain a small
light ready to kindle the main light when the chain is pulled.
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:-
In apparatus for lowering and extinguishing lights after a predetermined time,
in combination with a disc caused to revolve by clockwork, two arms adjustable
thereon and a stop cock governing passages for gas to two sets of lights, the
plug of the cock having arms so arranged so to be acted on by a shoulder of
the disc to turn on gas, and by the two arms successively to shut off the gas,
first from the one set of lights and then from the other, substantially as described.
Dated this 6th day of September 1898.
ABEL & IMRAY,
Agents for the Applicant.