IMPROVEMENTS IN THE MANUFACTURE OF IRON
Year: 1879

page_text: LETTERS PATENT to John Cooke, of William Cooke and Company (Limited),
Tinsley, Rotherham, in the County of York, Assistant Managing Director,
for the Invention of "IMPROVEMENTS IN THE MANUFACTURE OF IRON."
PROVISIONAL SPECIFICATION left by the said John Cooke at the Office
of the Commissioners of Patents on the 9th April 1879.
JOHN COOKE, of William Cooke and Company, Limited, Tinsley, Rotherham,
in the County of York, Assistant Managing Director. "IMPROVEMENTS IN THE
MANUFACTURE OF IRON."
This Invention has for its object the production of wire and other forms of iron
of high and uniform quality, of high electrical conductivity, and capable of with-
standing a high tensional and torsional strain.
By this Invention I reduce the quantity of carbon, silicon, sulphur, and manganese
existing in common metal to the relative proportions in which they exist in best
iron.
In carrying my Invention into effect I first produce by ordinary means and
in ordinary apparatus iron which has (with other elements) in combination
with it carbon, silicon, sulphur, and manganese in or about the following ratio,
namely:

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Cooke in the Great Seal Patent Office on the 9th October 1879.
JOHN COOKE, of William Cooke and Company (Limited), Tinsley, Rotherham,
in the County of York, Assistant Managing Director. "IMPROVEMENTS IN THE
MANUFACTURE OF IRON."
This Invention has for its object the production of wire and other forms of iron
of high and uniform quality, of high electrical conductivety, and capable of with-
standing a high tensional and torsional strain.
This Invention consists in reducing the quantity of carbon, silicon, sulphur, and
manganese existing in common metal to the relative proportions in which they exist
in best iron.
In carrying my Invention into effect I first produce by ordinary means and
in ordinary apparatus a common metal or iron which has (with other elements)
in combination with it carbon, silicon, sulphur, and manganese in or about the
means and in ordinary apparatus) a metal having the following constituent parts
proportioned as follows, namely:-
Carbon
Silicon
Sulphur
Manganese
Iron
.450
.077
.070
.890
99.753
The metal or metallic alloy above described I cut into small pieces and place in a
furnace and surround it with charcoal and subject it to one or more currents of
atmospheric air, by which means it is melted, the action of the air and the charcoal
upon the metal or metallic alloy being continued until the elements in excess are
reduced to their proper proportions to ensure the iron being of the quality above
specified.
The mass of fused iron is balled up, and forged and manipulated in the ordinary
way.
Having now described and particularly ascertained the nature of my said Inven-
tion, and the manner in which the same is or may be used or carried into effect, I
would observe in conclusion that what I consider to be novel and original, and
therefore claim as the Invention secured to me by the hereinbefore in part recited
Letters Patent is,―
Improvements in the manufacture of iron by (firstly) producing in ordinary
apparatus and by ordinary means iron or metal having in combination therewith
carbon, silicon, sulphur, and manganese in the proportions herein before described,
and (secondly) subjecting the same to the action of heat, atmospheric air, and
charcoal in a furnace of ordinary construction for the purpose and in the manner
hereinbefore specified and described.
In witness whereof, I, the said John Cooke, have hereunto set my hand and
seal, this Third day of October, in the year of our Lord One thousand
eight hundred and seventy nine.