Improvements in Electric Conductors
Year: 1895

page_text: Date of Application, 23rd Mar.,
1895
Complete Specification Left, 23rd Dec., 1895-Accepted, 29th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in Electric Conductors.
JOHN ALEXANDER ROSSITER Tivoli Hall Kingstown Dublin Ceylon Tea
Planter. I do hereby declare the nature of this invention to be as follows:-
If an electric cable or other conductor of electric current be constructed on the
principle of the Leyden jar or other similar condenser of electricity-namely-by
placing a dielectric body between two conducting electric bodies and charging the
whole as an electric condenser is charged but driving the charge on the opposite
Either of the
side into earth, or otherwise removing it and then insulating it.
conducting bodies forming the inner or outer side of such a condenser or cable will
become a non resisting conductor of electricity of similar sign to that of the side
conducting it provided the other side be insulated and currents of electricity can
be thus conveyed over long distances without material loss of energy.
Dated this 20th day of March 1895.
Improvements in
I, JOHN ALEXANDER ROSSITER Tivoli Hall Kingstown Dublin Ceylon Tea
Planter 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:-
I claim to effect improvements in electric conductors by using and utilising the
principle of condensation of electricity as illustrated by the Leyden jar.
In the accompanying drawing Figures 1. and 2. show two longitudinal sections
of the same combination of two parallel conductors and two cross sections of
same.
A and B represent the two conductors and C the insulating body separating them
one from the other D. E. F. G and H represent batteries or other sources of
electric supply and a-a-a-a. a are places where joinings or connections are
In Figure 1. I make
made between the poles of the batteries and the conductors.
the conductor B. the condensing conductor insulated from the conductor A. and
also from earth and A. I make the collecting and transmitting conductor. If the
positive pole of the battery H. be joined up to and connected with the conductor A.
at the joint a. and the negative pole and also the other end of the conductor A.
be connected with earth a current of electricity will flow from the battery through
the conductor to earth at its other end. It is known that the strength of a current
varies directly as the length of a conductor and if the length increases the strength
of the current falls off in proportion.
To overcome this loss in strength and enable a conductor to carry a current of
full strength from end to end of it, I charge another conductor running parallel
to it such as that represented by B. with negative electricity from a battery or
source of electric supply D. by joining up the negative pole of the battery at a

page_text: with the conductor B. and the other "positive" pole with earth and to furnish and
supply a uniform charge of negative electricity along the whole length of the
conductor B. I place similar batteries or supplies similarly connected at intervals
along its length as shown at E. F. G. The more strongly B. is charged with
negative electricity the more will the capacity of the conductor A. be increased to
carry and transmit current.
Figure 2. shows the conductors in reverse action A. becoming the condensing
conductor charged with negative electricity from the batteries or sources D. E. F. G.
through the material of B by the insulated passages a. a. a. a. and B. becoming the
collecting and transmitting conductor conveying current.from battery or source H.
to earth at its other end-the action in this case is similar to that already
explained as in Figure 1.
1
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I do declare that what
I claim is
1st. I effect improvements in electric conductors by increasing their capacity to
carry and transmit current and prevent the falling off in strength which takes
place in conductors under present usage over long distances.
2nd. I provide for the storage of the electric magnetic field thrown out by the
passing current and thus do away with induction by condensing it on the condensing
conductor negatively electrified.
3rd. I do away with over heating and reduce heating of the conductor to a
minimum for there will be less need to use high pressure to force electric current
through small conductors.
Dated this First day of February 1896.