Improvements in Dynamo or Electro-motor Conductors.
Year: 1890

page_text: Date of Application, 21st Jan., 1890
Complete Specification Left, 21st Oct., 1890-Accepted, 6th Dec., 1890
PROVISIONAL SPECIFICATION.
Improvements in Dynamo or Electro-motor Conductors.
GILBERT BETTELEY LÜCKHOFF of 214 Whitehorse Road, Croydon, Surrey and
EMIL HENRY HUNGERBÜHLER of 22 Falmouth Road, Borough, London Electrical
Engineers do hereby declare the nature of this invention to be as follows:
The object of this invention is to construct cheap electro-magnetic conductors of
any desired conductivity.
The improvements relate to the construction of conductors of the class described
in Specification No. 126, A.D. 1889.
We substitute for the iron strips mentioned, a coating of iron, nickel cobalt or
other magnetic substance.
The coating may consist of iron nickel or cobalt, wire or strip wound spirally
round the bare copper wire of any desired section, and secured in position by means
of solder, or by depositing electrically some metal such as copper over the whole so as
to form one solid conductor of electric current.
The coating may also consist of iron, nickel or cobalt, deposited by electrical means
over the bare copper wire.
After the copper wire has been coated with iron, nickel or cobalt as described, it
may be covered in the usual way by some insulating material such as cotton or silk.
The specific magnetic or electric conductivity of a conductor may be varied by
changing the relative quantities of iron and copper, copper and nickel etc. to any
desired extent.
Datad this 20th day of January 1890
COMPLETE SPECIFICATION.
Improvements in Dynamo or Electro-motor Conductors.
We GILBERT BETTELEY LÜCKHOFF of 214 Whitehorse Road, Croydon Surrey
and EMIL HENRY HUNGERBÜHLER of 64 Holmesdale Road South Norwood Electrical
Engineers 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 :-
The improvements relate to the construction of conductors of the class described in
Specification No. 126 A.D. 1889.
We substitute for the iron strips mentioned a coating of iron nickel cobalt or other
magnetic substance.
The coating may consist of iron nickel or cobalt wire or ribbon wound spirally
round the bare copper wire of any desired section, and secured in position by means
of solder or by depositing electrically some metal preferably copper over the whole so
as to form one solid conductor of electric current.
The coating may also consist of iron nickel or cobalt deposited by electrical
means over the bare copper wire.
After the copper wire has been coated with iron nickel or cobalt as described it may
be burnished or made smooth by mechanical means and covered in the usual way with
some insulating material such as cotton or silk.
The specific magnetic or electric conductivity of a conductor may be varied to
suit any magnetic field by changing the relative quantities of iron and copper nickel
& copper or cobalt & copper.

page_text: The drawing represents a copper wire a covered with iron wire b and cotton
insulation c.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :
.
1. The use of compound or electro magnetic conductors consisting of copper wire
covered by spiral windings of iron nickel or cobalt wire or ribbon and fixed on the
copper wire by solder or an electro-deposited metal.
2. The use of conductors consisting of copper wire covered with iron nickel or
cobalt deposited by electrical means on the said copper wire.
Dated this 20th day of October 1890
G. B. LÜCKHOFF.
EMIL H. HUNGERBÜHLER.