Improvements relating to Electric Railways.
Year: 1896

page_text: Date of Application, 29th Feb., 1896-Accepted, 11th July, 1896
COMPLETE SPECIFICATION.
Improvements relating to Electric Railways.
I, CARL COERPER, of Ehrenfeld Cologne, in the Empire of Germany, Director,.
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 electric railways worked by transformers and sectional.
conductors and is illustrated diagrammatically in the accompanying drawing.
In the working of electric railways with sectional conductors, which are fed by
transformers of any kind having stationary or rotary windings, it is necessary for
reasons of economy to always include only such transformers as will supply the-
current just required for the vehicle on the corresponding sectional conductor.
a a are the sectional conductors; bare the high current conductors; TT are
the transformers of which T and T are the primary and secondary windings.
respectively.
I achieve this object by arranging the several lengths of sectional conductors a a
so as to overlap at their junctions in such a manner that the overlapping onds of
the sectional conductors are joined in parallel by the contacts which serve for
conducting the current to the vehicle. In this manner a portion of the current
from the secondary winding T of the transformer of one sectional conductor
passes into the secondary transformer circuit of the other sectional conductor..
Indeed, the second transformer at first receives inductively only so much current
us is needed for running idle or for its magnetization. In this secondary circuit
an electromagnet device M is included which will already begin to act with a
current used when the transformer is running idle, so that it will close the
primary circuit of the transformer. By this means the transformer which appertains
to the corresponding sectional length produces current and supplies at first a portion
and then the whole amount of the necessary current for working the vehicle which
On the other hand the
passes upon the corresponding sectional length of line.
transformer of the previous sectional length of line discontinues to receive a secondary
current as soon as tho lengths joined in parallel aro left by the contact for conducting
current to the vehicle: the magneto-electric switching device M ceases to operate
and thus interrupts the primary current sent to the transformer.
The vehicle does not move over the conductors b, but over the sectional con-
ductors a a. For this purpose they are provided with two contacts, which switch
over the both sectional conductors a a, so that the secondary current T of the
When the
apparatus a is closed and the electro-motor of the vehicle can work.
contacts of the vehicle come to the point they will also contact with the ends of
the sectional conductors a' a' so that a part of the current goes to the solenoid M,
which closes the contact t, so that the transformer of the apparatus B receives high
current and the sectional conductors a a' the electric power, which is necessary for
moving the vehicle. If the contacts of the vehicle leave the conductors a' a, the
current is automatically cut off.
The particular construction and arrangement of the magneto-electric switching.
device does not constitute the subject of my invention, as for this purpose use may
be made of any arrangement operating in a reliable manner.
Having now particularly described and ascertained the nature of my said inven
tion and in what manner the same is to be performed, I declare that what I
claim is :-
Απ electric enilway worked with
transformers and sectional conductors.

page_text: characterized by magneto-electric devices for closing the circuit which are included
in the secondary circuit of each transformer, which devices automatically close the
circuit of the corresponding primary winding of the transformers as soon as the
vehicle bridges over the junctions of the corresponding sectional conductors in
parallel with a provious sectional conductor supplied with current, and which
automatically cut out the primary winding of the transformers as soon as no more
current is used on the corresponding length of the sectional conductor.
Dated this 29th day of February 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, W.O., Agents for the Applicant.