Transmission and other Purposes.
Year: 1885

page_text: Transmission and other Purposes.
I, EDOUARD MARTIN of Paris in the Republic of France, Artizan, do hereby declare
the nature of this invention to be as follows:-
My invention has for its object to obtain, by the combination of two or more
metals, wires of comparatively great strength, and electric conducting power
combined with small sectional area. Such wires are mainly intended as electrical
conductors, but they are also applicable for other purposes.
:
I construct in the first instance a wire enclosed in a casing of a different metal,
which shall serve to protect the core from shocks and influence of temperature.
For this purpose I take a tube of steel, iron, or other metal, such as hereinafter
mentioned, such tube being drawn solid or prepared from a rolled band drawn
through dies, and into this tube I introduce a bar or rod of copper of small
diameter and I subject the two combined parts to a drawing operation until the
core has attained the gauge required for the electrical conductor. A convenient
mode of manufacture consists in casting a short steel tube, and after removing the
core, heating the tube and then running into the same molten copper. This is first
rolled and then drawn through dies. The outer casing, instead of being of iron or
steel, may be of copper, or its alloys with tin or zinc, or of nickel, german silver,
tombac, zinc, &c.
When the compound wire is intended more particularly for telegraphic and other
electrical purposes, I employ by preference copper for the core and steel for the
outer casing. For telephonic wires employ silver for the core, which metal
possesses the greatest electrical conducting power, and I cover the same with steel,
copper, nickel or other metal. The proportion between the silver core and the
outer casing may vary from one to twenty five per cent.
The above described method of manufacture may also be reversed, the more or
less precious metal such as silver, platinum &c or the softer metal such as copper,
nickel &c being placed outside, by forming tube of this metal, into which is
introduced the stronger and cheaper metal, such as iron, steel, brass &c, the
combined metals being then drawn as above described.
Compound wires having an outer casing of steel or iron may be protected from
rust by galvanizing, or otherwise coating them.
CNT100K
ABEL & IMRAY,
Agents for the Applicant.

page_text: f.
I, EDWARD MARTIN of Paris in the Republic of France, Artizan 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 :-
My invention has for its object to obtain, by the combination of two or more
metals, wires of comparatively great strength and electric conducting power
combined with small sectional area. Such wires are mainly intended as electrical
conductors, but they are also applicable for other purposes.
I construct in the first instance a wire enclosed in a casing of a different metal,
which shall serve to protect the core from shocks and influences of temperature.
For this purpose I take a tube of steel, iron, or other metal such as hereinafter
mentioned, such tube being drawn solid or prepared from a rolled band drawn
through dies, and into this tube I introduce a bar or rod of copper of small
diameter and I subject the two combined parts to a drawing operation until the
core has attained the gauge required for the electrical conductor. A convenient
mode of manufacture consists in casting a short steel tube, and after removing the
core, heating the tube and then running into the same molten copper. This is first
rolled and then drawn through dies. The outer casing, instead of being of iron or
steel, may be of copper, or its alloys with tin or zinc, nickel, german silver,
tombac, zinc &c.
When the compound wire is intended more particularly for telegraphic and
other electrical purposes, I employ by preference copper for the core and steel for
the outer casing. For telephonic wires I employ silver for the core, which metal
possesses the greatest electrical conducting power, and I cover the same with steel,
copper, nickel or other metal. The proportion between the silver core and the
outer casing may vary from one to twenty five per cent.
The above described method of manufacture may also be reversed, the more or
less precious metal such as silver platinum &c or the softer metal such as copper,
nickel &c being placed outside, by forming a tube of this metal, into which is
introduced the stronger and cheaper metal, such as iron, steel, brass &c, the
combined metals being then drawn as above described.
Compound wires having an outer casing of steel or iron may be protected from
rust by galvanizing, or otherwise coating them.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
·
The manufacture of compound wires for electrical transmission and other
purposes, composed of two metals of different strength and conducting powers,
enclosed the one within the other and subjected to a drawing operation
substantially as herein described.