Improvements in Tubular Electrical Conductors.
Year: 1892

page_text: Date of Application, 19th Feb., 1892
Complete Specification Left, 15th Nov., 1892-Accepted, 17th Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Tubular Electrical Conductors.
I, ERNEST PAYNE of No. 39 Victoria Street, Westminster in the County of
London, Electrical Engineer, do hereby declare the nature of this invention to be
as follows:-
In the Specification No. 17402 of 1890 of an invention of which I was part
inventor, was described a construction of electrical conductors consisting of
concentric metal tubes separated by rings of nonconducting material placed on
them at intervals, with means of fixing these rings in position. My present
invention has for its object to simplify and cheapen the construction of conductors of
this kind, which I effect by employing, not tubes, but strips of metal bent into
tubular form but without having their meeting edges united by soldering or other-
wise, so that they have a certain elasticity. On a strip thus bent to tubular form
I place at intervals the non-conducting rings which, having their internal diameters
somewhat less than the external diameter of the tubular strip, have to be pushed
on with some force, and are held in position by the outward spring of the metal.
Two successive lengths of conductors can also be readily connected together by
simply pushing the end of the one into the end of the other.
Dated this 19th day of February 1892.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Tubular Electrical Conductors.
I, ERNEST PAYNE, of No. 39 Victoria Street, Westminster, in the County of
London, Electrical Engineer, 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 :-
In the Specification No. 17402 of 1890 of an invention of which I was part
inventor, was described a construction of electrical conductors consisting of
concentric metal tubes separated by rings of non conducting material placed on
them at intervals, with means of fixing these rings in position. My present
invention has for its object to simplify and cheapen the construction of conductors
of this kind, which I effect by employing, not tubes, but strips of metal bent into
tubular form but without having their meeting edges united by soldering or other-
wise, so that they have a certain elasticity. On a strip thus bent to tubular form I
place at intervals the non-conducting rings which, having their internal diameters
somewhat less than the external diameter of the tubular strip have to be pushed on
with some force, and are held in position by the outward spring of the metal.
In like manner insulating rings or pieces a little larger than the internal diameter
of the unclosed tube can be pushed into it and may have passed through holes in
them several wires which may be thus kept apart and insulated. Again, two or
more of the unclosed tubes may be pushed through holes in insulating blocks, thus
forming parallel conductors insulated from one another. In this as in the cases
previously described, the blocks, and insulators are held in position by the spring
of the tube preventing their movement unless force be applied. Lengths of con-
ductors made in the manner described can be readily connected together by simply
pushing the end of one length into the end of the other.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
An electric conductor formed by bending a strip of metal into the form of a tube,
without connecting the edges of the bent strip, the unclosed tube thus formed having
insulating rings or blocks forced on to it or into it at intervals so as to be held by
the spring of the tube, substantially as described.
Dated this 15th day of November 1892.
ABEL & IMRAY,
Agents for the Applicant.