Method of Applying Electricity to the Mechanism of Lights for Lighthouses, Buoys, Beacons, and the like.
Year: 1893

page_text: Date of Application, 17th Nov., 1893
Complete Specification, Left, 10th July, 1894-Accepted, 11th Aug., 1894
PROVISIONAL SPECIFICATION.
A Method of Applying Electricity to the Mechanism of Lights for
Lighthouses, Buoys, Beacons, and the like.
I, HENRI MARIE HUBERT COMTE DELAMARRE, of 162 Rue Ordener, Paris,
France, Gentleman, do hereby declare the nature of this invention to be as
follows:-
The chief object of this invention is to work, without employing attendants, the
mechanism for varying the lights of lighthouses, buoys, beacons and the like, by
means of darkening screens or coloured glasses. It consists in the application of
electricity, instead of clockwork which has frequently to be wound up. As source
of the electricity, secondary batteries may be employed, but I prefer dry primary
batteries. The motor which I prefer is one with permanent field magnets so as to
furnish considerable power with small expenditure of electrical energy. The speed
of the motor, which should be high in order to give good efficiency and regularity
of movement, is reduced by connecting it through worm gear to the moving parts of
the light.
A is a
Figs. 1, 2, 3 and 4 of the accompanying drawings shew the motor.
powerful permanent magnet having pole pieces B so as to embrace a large part of
the circumference of the armature E the axis of which terminates in conical
The
journals D running in ball bearings formed in a gun metal framing C.
armature E has its iron core, hollowed in order to lighten it, wound with insulated
wire as the Siemens or such like armatures are wound in several sections which are
connected to the commutator G to which the current is delivered by brushes H
arranged so that there is no dead point or sparking. The only parts of the motor
subject to any serious wear are the brushes which can be easily replaced from time
to time; the rubbing surfaces are preferably of silver or platinum. Although the
motor shewn in the drawings is one of a kind which I prefer, other known electrical
motors could be substituted for it.
The
Figs. 5 and 6 shew a gas lamp with the motor applied to work its revolving
screens or coloured glasses L which are supported on a gallery K caused to revolve
by a wheel J on its axis gearing with a worm on the axis of the motor.
wheel J turns around the tube M by which gas or hydrocarbon vapour ascends to
the burner N. The wheel J preferably revolves between balls O O' arranged
above and below it, in grooves Q Q' in which they are held by a collar P on the
tube M.
The motor and moving parts of the lamp are mounted on a platform S so that
they can readily be removed for cleansing or repair.
Dated this 17th day of November 1893.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
A Method of Applying Electricity to the Mechanism of Lights for
Lighthouses, Buoys, Beacons, and the like.
I, HENRI MARIE HUBERT COMTE DELAMARRE, of 162 Rue Ordener, Paris,
France, Gentleman, 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 chief object of this invention is to work, without employing attendants, the

page_text: mechanism for varying the lights of lighthouses, buoys, beacons and the like, by
means of darkening screens or coloured glasses. It consists in the application of
electricity, instead of clockwork which has frequently to be wound up.
As source
of the electricity, secondary batteries may be employed, but I prefer dry primary
batteries. The motor which I prefer is one with permanent field magnets so as to
furnish considerable power with small expenditure of electrical energy. The speed
of the motor, which should be high in order to give good efficiency and regularity
of movement, is reduced by connecting it through worm gear to the moving parts of
the light.
Figs. 1, 2, 3 and 4 of the drawings accompanying my Provisional Specification
shew the motor. A is a powerful permanent magnet having pole pieces B so as to
embrace a large part of the circumference of the armature E the axis of which
terminates in conical journals D running in ball bearings formed in a gun metal
framing C. The armature E has its iron core hollowed in order to lighten it, and
it is wound with insulated wire as the Siemens or such like armatures are wound
in several sections which are connected to the commutator G to which the
current is delivered by brushes H arranged so that there is no dead point or
sparking. The only parts of the motor subject to any serious wear are the brushes
which can be easily replaced from time to time; the rubbing surfaces are preferably
of silver or platinum. Although the motor shewn in the drawings is one of a kind
which I prefer, other known electrical motors could be substituted for it.
The
Figs. 5 and 6 shew a gas lamp with the motor applied to work its revolving
screens or coloured glasses L, which are supported on a gallery K caused to revolve
by a wheel J on its axis gearing with a worm I on the axis of the motor.
wheel J turns around the tube M by which gas or hydrocarbon vapour ascends to
the burner N. The wheel J preferably revolves between balls O¹ arranged
above and below it, in grooves QQ in which they are held by a collar P on the
tube M.
The motor and moving parts of the lamp are mounted on a platform S, so that
they can readily be removed for cleansing or repair.
Having now particularly described and ascertained the nature of this inven-
ion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The herein described method of varying the lights of lighthouses, buoys
beacons and the like by applying electricity to work the light varying mechanism.
2. The electro motor for the above purpose constructed and arranged sub-
stantially as described with reference to Figs. 1, 23 and 4.
3. The combination of the said electro motor with the lamp substantially as
described with reference to Figs. 5 and 6.
Dated this 10th day of July 1894.
ABEL & IMRAY,
Agents for the Applicant..