Year: 1886

page_text: Date of Application, 3rd July, 1886.
Complete Left, 2nd Apr., 1887.
Complete Accepted, 3rd May, 1887.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of this invention to be as follows:-
This invention relates to the night signalling apparatus described in the specifica-
tion of Letters Patent dated December 8th 1884 No. 16144.
In the said apparatus the signals are given by putting a group or combination
of electric lamps into the circuit of a dynamo-electric machine or
some other
generator or source of electricity. When the signalling apparatus is inoperativo,
that is to say, when no signals are being given resistances are substituted for the
signalling lamps.
In the said former specification the nature of the resistances is not mentioned, and
although it may be said that any class of resistances, such for instance, as eléctric
incandescent lamps, may be used, the object of the present specification is to point
out that incandescent lamps may be employed for the aforesaid resistances without
necessarily altering either the arrangement of the circuits or any other arrangement
of the apparatus.
The resistance of each of the lamps serving the aforesaid purpose should be equal
to the resistance of any one of the signalling lamps. By these means the resistance
of the external circuit of the generator is kept constant.
Dated this 2nd days of Tul., 1006
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.

page_text: I, HENRY HARRIS LAKE of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, 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:-
This invention relates to the night signalling apparatus described in the Specifica-
tion of Letters Patent dated December 8th 1884 No. 16,144.
In the said apparatus the signals are given by placing a group or combination of
electric lamps into the circuit of a dynamo-electric machine or some other generator
or source of electricity.
When the signalling apparatus is inoperative that is to say when no signals are
being given resistances are substituted for the signalling lamps.
In the said former specification the nature of these resistances is not mentioned and
although it may be said that any class of resistances such for instance as electric
incandescent lamps may be used the object of the present invention, is to indicate the
employment of incandescent lamps in lieu of the aforesaid resistances.
When employing incandescent lamps no alteration is necessary either in the
arrangement of the circuits or in any other part of the apparatus.
The resistance of each of the lamps must be equal to the resistance of one signalling
lamp. By these means the resistance of the circuit is kept constant.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed, as communicated to me by my
foreign correspondent, I declare that what I claim is
In night signalling apparatus of the kind hereinbefore referred to, the employ-
ment of incandescent lamps for the purpose of maintaining a constant resistance in
the circuit of the generator.
Dit
1
Ր A
*1 1002
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.