IMPROVEMENTS IN THE MANUFACTURE
Year: 1855

page_text: LETTERS PATENT to David Simpson Price, of 2, South Moulton Street,
in the County of Middlesex, Consulting Chemist, and Edward Chambers
Nicholson, of 8, Newington Crescent, in the County of Surrey, Manufac-
LETTERS PATENT to David Simpson Price, of 2, South Moulton Street,
in the County of Middlesex, Consulting Chemist, and Edward Chambers
Nicholson, of 3, Newington Crescent, in the County of Surrey, Manufac-
turing Chemist, for the Invention of "IMPROVEMENTS IN THE MANUFACTURE
Sealed the 16th May 1856, and dated the 20th November 1855.
PROVISIONAL SPECIFICATION left by the said David Simpson Price
and Edward Chambers Nicholson at the Office of the Commissioners of
Patents, with their Petition, on the 20th November 1855.
We, DAVID SIMPSON PRICE, of 2, South Moulton Street, in the County of
Middlesex, Consulting Chemist, and EDWARD CHAMBERS NICHOLSON, of 3,
Newington Crescent, in the County of Surrey, Manufacturing Chemist, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN THE
MANUFACTURE OF CAST STEEL" to be as follows:-
This Invention consists in the production of a superior quality of cast steel
from iron, smelted either by coal, anthracite, or coke, at a less cost than has
hitherto been obtained.
The improvements consist in melting together the product of the refinery
process of cast iron, known as "metal," "finers' metal," or "refinery metal,"
with suitable proportions of wrought iron, however such wrought iron may bo
obtained, by which means a product is obtained possessing the properties of
cast steel

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said David Simpson Price and Edward Chambers Nicholson in
the Great Seal Patent Office on the 20th May 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME,, we, DAVID
SIMPSON PRICE, of 2, South Moulton Street, in the County of Middlesex,
Consulting Chemist, and EDWARD CHAMBERS NICHOLSON, of 3, Newington
Crescent, in the County of Surrey, Manufacturing Chemist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of November, in the year of our Lord
One thousand eight hundréd and fifty-five, in the nineteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said David Simpson Price and Edward Chambers Nicholson, Her special
license that we, the said David Simpson Price and Edward Chambers Nichol-
son, our executors, administrators, and assigns, or such others as we, the
said David Simpson Price and Edward Chambers Nicholson, our executors,
administrators, or assigns, should at any time agree with, and no others, from
time to time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN THE MANUFACTURE OF CAST STEEL,"
upon the condition (amongst others) that we, the said David Simpson Price
and Edward Chambers, Nicholson, by an instrument in writing under
hand and seal, should particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said David Simpson Price and Edward
Chambers Nicholson, do hereby declare the nature of our said Invention,"
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
Our said Invention relates to the more economical manufacture or produc-
tion of cast steel, by melting together the product of the refinery process of
cast iron, known as "metal," "finers' metal," or "refinery metal," with
suitable proportions of wrought iron in any convenient form, however such
wrought iron may be obtained, whereby a product will be obtained possessing
the properties of cast steel. .
We are aware that it has previously been proposed to produce cast steel-by
melting together cast and wrought iron, and we therefore lay no claim to that

page_text: peculiar admixture; but what we consider as the main feature of novelty in
our present Invention is the employment of "metal" as herein-before referred
to, such "metal" being made from pig iron smelted by coke or coal and
mixed with wrought iron. The "metal" which we prefer for mixing with
wrought iron is that made from pig iron, smelted with a cold blast from
hematite or spathose ores, and refined until it has lost the whole or nearly
the whole of its silicon, the object in this being to lose as little of its carbon
as possible. This "metal" will be found to be more free from impurities,
especially silicon, than either charcoal or coke pig iron, whilst the amount of
carbon which it contains is about the same as it exists in the pig iron from
which it was made, and it is therefore a material peculiarly well adapted for
the manufacture of cast steel.
We may here observe that we do not confine or restrict ourselves to any
particular proportions in the admixture of the "metal" herein-before referred
to with wrought iron, as the proportions may be varied, according as circum-
stances and the quality of steel to be produced require, neither do we confine
ourselves to any particular mode of mixing the "metal" with the wrought
iron; but what we claim as the Invention secured to us by the herein-before
in part recited Letters Patent is, the manufacture or production of cast steel
by mixing wrought iron in any convenient form with "metal," known also as
"finers' metal," or "refinery metal."
In witness whereof, we the said David Simpson Price and Edward
Chambers Nicholson, have hereunto set our hands and seals, the
Nineteenth day of May, One thousand eight hundred and fifty-six.
DAVI
PRICE.
(L.S.)
E. CHAMBERS NICHOLSON. (L.s.)
Signed, sealed, and delivered in the
presence of
J. HENRY JOHNSON,
47, Lincoln's Inn Fields.