Improvements in the Arrangement and Connection of Conductors for Electric Railways.
Year: 1893

page_text: Date of Application, 3rd Oct., 1893
Complete Specification Left, 25th June, 1894-Accepted, 28th July, 1894
PROVISIONAL SPECIFICATION.
Improvements in the Arrangement and Connection of Conductors
for Electric Railways.
We, SIEMENS BROTHERS & Co. LIMITED, of 12 Queen Anne's Gate,
Westminster, in the County of Middlesex, and GEORGE HERBERT THORNTON,
of 133 Charlton Lane, in the County of Kent, Electrical Engineers, do hereby
declare the nature of this invention to be as follows:-
This invention relates to the arrangement of conductors for electric railways,
having two lines of rails, in such a manner that, when the three wire system of
conductors is employed, the locomotive can cross over from the one line to the other
without short circuiting the generating dynamos. The three wire system may be
applied by using the positive and neutral conductors to serve, say the up line, and
the neutral and negative conductors to serve the down line.
The accompanying drawings illustrate diagrammatically the connections of
conductors arranged to operate in this manner.
Fig. 1 illustrates the application of the three wire system of conductors where
there is no cross over road for the locomotive. U U and DD are the rails of the
up and down lines respectively, P indicates the plus or positive, M the minus or
negative, and N the neutral conductors respectively, which are interrupted or have
gaps at all the places marked G, these gaps having dummy pieces over which the
conducting trolleys can travel, and being of width less than the distance between
the front and the rear trolleys, so that while the one trolley is over a gap the other
is making contact.
Fig. 2 illustrates the arrangement of the conductors when there is a cross over
road C by which an up train can pass directly to the down line.
Fig. 3 illustrates the arrangement when there is a cross over road C by which
an up train can back to the down line or a down train can back to the up line. In
this case it is preferred to have a gap of considerable width at W so that if an up
train should accidentally pass its danger signal, it may come to rest at W where
the supply of power ceases.
By means of suitable switches which are preferably interlocked with the point
and signal levers, the interrupted and cross over .conductors can be put as may be
required in connection with the main conductors.
Dated this 3rd day of October 1893.
ABEL & IMRAY,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in the Arrangement and Connection of Conductors
for Electric Railways.
We, SIEMENS BROTHERS & Co. LIMITED, of 12 Queen Anne's Gate,
Westminster in the County of Middlesex, and GEORGE HERBERT THORNTON
of 133 Charlton Lane in the County of Kent, Electrical Engineers, do hereby
declare the nature of this invention and in what manner the same
performed to be particularly described and ascertained in and by the following
statement:-
to be
This invention relates to the arrangement of conductors for electric railways,

page_text: .
having two lines of rails, in such a manner that, when the three wire system of
conductors is employed, the locomotive can cross over from the one line to the
other without short circuiting the generating dynamos. The three wire system
may be applied by using the positive and neutral conductors to serve say the up
line, and the neutral and negative conductors to serve the down line. The drawings
accompanying the Provisional Specification illustrate diagrammatically the con-
nections of conductors arranged to operate in this manner.
Fig. 1 illustrates the application of the three wire system of conductors where
there is no cross over road for the locomotive. U U and D D are the rails of the
up and down lines respectively, P indicates the plus or positive, M the minus or
negative, and N the neutral conductors respectively, which are interrupted or have
gaps at all the places marked G, these gaps having non-conducting dummy pieces
over which the collecting trolleys can travel, and being of width less than the
distance between the front and rear trolleys, so that while the one trolley is over a
gap the other is making contact.
Fig. 2 illustrates the arrangement of the conductors when there is a cross over
road C by which an up train can pass directly to the down line.
In
Fig. 3 illustrates the arrangement when there is a cross over road C by which
an up train can back to the down line or a down train can back to the up line.
this case it is preferred to have a gap of considerable width at W, so that if an up
train should accidentally pass its danger signal, it may come to rest at W where
the supply of power ceases.
By means of suitable switches, which are preferably interlocked with the point
and signal levers, the interrupted and cross over conductors can be put, as may be
required, in connection with the main conductors.
Having now particularly described and ascertained the nature of this iuven-
tion and in what manner the same is to be performed, we declare that what
we claim is :-
A three wire arrangement of the conductors for a double line electric railway,
the positive and neutral wires serving the locomotives on the one line of rails, the
neutral and negative wires serving those on the other line, and the connections for
cross over roads being made with gaps filled with dummy pieces on which the
collecting trolleys can travel, substantially as and for the purpose set forth.
Dated this 25th day of June 1894.
ABEL & IMRAY,
Agents for the Applicants.