IMPROVEMENTS IN MEANS OR APPARATUS TO BE USED IN CONNECTION WITH THE TRANSMISSION OF PROVISIONAL SPECIFICATION
Year: 1882

page_text: LETTERS PATENT to Louis John Crossley of Halifax in the county of York,
John Frederic Harrison of Bradford, in the county of York, and Walter
Emmott of Halifax aforesaid, for an invention f "IMPROVEMENTS IN MEANS
OR APPARATUS TO BE USED IN CONNECTION WITH THE TRANSMISSION OF
PROVISIONAL SPECIFICATION left by the said Louis John Crossley, John
Frederic Harrison & Walter Emmott at the Office of the Commissioners
of Patents on the 18th March 1882.
LOUIS JOHN CROSSLEY of Halifax, in the county of York, JOHN FREDERIC
HARRISON, of Bradford in the county of York, and WALTER EMMOTT, of Halifax,
aforesaid, IMPROVEMENTS IN MEANS OR APPARATUS TO BE USED IN CONNECTION
WITH THE TRANSMISSION OF ELECTRIC CURRENTS OF HIGH TENSION."
"
This invention relates to the arrangement of certain electric appliances such as is
hereinafter described by means of which telephone and other lines of suitable
resistance may be used for the conveyance of powerful currents of electricity for
electric lighting, electro-plating, the transmission of power and for other purposes
where electricity of high tension is employed without danger to the usual telephonic,
telegraphic and other instruments.
In carrying out our invention in connection with the conveyance of high tension
electricity over telephone lines we place in the exchange a number of dynamo-
electric machines or other suitable generators of electricity connected with a
switching arrangement by means of which the currents generated may be distributed
to the various subscribers. Connected with the switch is an annunciator adapted
to suit high tension currents by means of which any accident to the line is imme-
diately made known at the exchange, the said annunciator also allows the
subscribers to call the attention of the operator in case they wish to speak during
the time the high tension currents are passing over the line. Connected with each
subscriber's instrument is a relay or other appliance constructed and arranged so
that the high tension currents for electric lighting or other purposes shall not
injuriously affect the said instruments; a secondary battery may be used in
connection with the said instruments, by means of which a supply of electricity
can be stored to allow the subscribers to use the telephone without interfering with
the light or otherwise. Arrangements may be provided whereby the secondary
battery can be charged from the exchange without troubling the subscriber.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Louis John Crossley, John Frederic Harrison & Walter Emmott
in the Great Seal Patent Office on the 18th September 1882.
LOUIS JOHN CROSSLEY of Halifax, in the county of York, JOHN FREDERIC
HARRISON, of Bradford, in the county of York and WALTER EMMOTT of Halifax,
aforesaid. "IMPROVEMENTS IN MEANS OR APPARATUS TO BE USED IN CONNECTION
WITH THE TRANSMISSION OF ELECTRIC CURRENTS OF HIGH TENSION
و"
This invention relates to the arrangement of certain electric appliances such as is
hereinafter described by means of which telephone and other lines of suitable
resistance may be used for the conveyance of powerful currents of electricity for
electric lighting, electro-plating, the transmission of power and for other purposes
where electricity of high tension is employed without danger to the usual telephonic,
telegraphic and other instruments.
In carrying out our invention in connection with the conveyance of high tension
electricity over telephone lines we place in the exchange a number of dynamo-
electric machines or other suitable generators of electricity connected with a
switching arrangement by means of which the currents generated may be
distributed to the various subscribers. Connected with the switch is an annunciator
adapted to suit high tension currents by means of which any accident to the line
is immediately made known at the exchange, the said annunciator also allows the
subscribers to call the attention of the operator in case they wish to speak during
the time the high tension currents are passing over the line. Connected with each
subscriber's instrument is a relay or other appliance constructed and arranged so
that the high tension currents for electric lighting or other purposes shall not
injuriously affect the said instruments; a secondary battery may be used in
connection with the said instruments, by means of which a supply of electricity
can be stored to allow the subscribers to use the telephone without interfering with
the light or otherwise. Arrangements may be provided whereby the secondary
battery can be charged from the exchange without troubling the subscriber.
In order to enable our invention to be better understood we will proceed to
describe the same by reference to the accompanying diagram which shews a suitable
arrangement for utilizing telephone exchange wires for the conveyance of high
tension electricity for various purposes.
The main leads coming from the dynamo-electric machines A are passed through
a switch B, to the lines and in each line is interposed an indicator C, wound with
thick wire, each subscriber is also provided with a safety indicator or relay C',
wound with thick wire and connected to line, the telephone apparatus D, being
connected to the repose contact E, of this relay or indicator. From this arrange-
ment it will be seen that a current of electricity of high tension flowing through
the indicators C, and C¹, will work both these instruments the result being that the
armature F, of the indicator C¹, coming in contact with the stud G, will
automatically switch the line to the lamps H, or to a secondary battery or elsewhere
as desired while the currents used in telephonic signalling will not affect the
armature and thus under ordinary circumstances the line will be switched to
telephone.
Should the subscriber desire to communicate to the central office during the
time the high tension current is flowing he can call up the central office by
interrupting the circuit for an instant which will cause the indicator C, in the
central office to record the fact.
Should any accident happen to the line the operator will also be advised of this
fact by a movement of the said indicator.

page_text: If it is desired that the central station shall be able to charge a secondary
battery situated at the subscriber's premises this may be effected automatically by
arranging two of the safety relays with polarized armatures, one being connected
to the lamps and the other to the secondary batteries as will be understood from
the foregoing description. This will enable the line to be used for signalling or
otherwise at intervals.
Having thus described our invention and a suitable means of carrying the same
into effect what we claim is :-
--
The method and arrangement herein described of utilizing telephone exchange
and other wires of suitable resistance for the conveyance of powerful electric
currents substantially in the manner and for the purposes herein before described.
In Witness whereof we the said Louis John Crossley and Walter Emmott for
and on behalf of ourselves and the said John Frederic Harrison have hereto
set our hands and seals this sixteenth day of September in the year of
our Lord one thousand eight hundred and eighty two
LOUIS JOHN CROSSLEY. (L.S.)
WALTER EMMOTT.
(L.S.)