A NEW MODE OF TREATING AND APPLYING. WROUGHT IRON
Year: 1847

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAṀ
ROCKE, of Dudley, in the County of Worcester, Engineer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date at Westminster, the Eighteenth day of November,
in the year of our Lord One thousand eight. hundred and forty-seven, did, for
Herself, Her heirs and successors, give and grant unto me, the said William
Rocke, my exors, adiňors, and assigns, Her especial licence, full power, sole
privilege and authority, during the term of years therein expressed, to make,
use, exercise, and vend, within England and Wales and the Town of
Berwick-upon-Tweed, the Islands of Jersey, Guernsey, Alderney, Sark, and
Man, and also in all Her Majesty's Colonies and Plantations abroad, my
Invention of "A NEW MODE OF TREATING AND APPLYING. WROUGHT IRON;" in
which said Letters Patent is contained a proviso that unless I, the said
William Rocke, shall particularly describe and ascertain the nature of my
said Invention, and in what manner the same is to be performed, by an
instrument in writing under my hand and seal, and cause the same to be
enrolled in Her Majesty's High Court of Chancery with six calendar months
and immediately after the date of the said Letters Patent, that then
the said Letters. Patent, and the privileges thereby granted, should utterly
cease and determine.
next
NOW KNOW YE, that in compliance with the said proviso, I, the said
William Rocke, do hereby declare the nature of my said Invention, and in

page_text: what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement thereof (that is to say):-
ميديافا
I take straps or pieces of wrought iron, and I melt them in a cupola
furnace with a soft fan blast, or in a reverberatory furnace, in the same manner
as pig or cast iron is melted and as is well understood in the iron foundries.
If small quantities are required to be melted, a pot or crucible furnace will be
most convenient. Having previously prepared moulds of the articles I wish
to make, in any of the usual modes in practice by ironfounders, I pour the
moulten wrought iron into the said moulds. The articles thus. made are hard
and brittle; and deficient-in-the- malleable-property.. I then proceed to treat
or anneal the articles thus cast from wrought iron in order to restore the
malleable property; for this purpose: I place them in a furnace similar to the
furnaces used for converting bar iron into steel, or any other convenient
furnace or kiln in which the heat can be properly regulated, and I there
arrange them either in an iron box, or in a casing of bricks, or in an
iron box surrounded with a casing of bricks, leaving sufficient space to
surround the articles entirely with Cumberland red ore or other iron ore,
or with charcoal, or, with a mixture of these, materials ground fine, or I
-cover the articles with these materials without such casing,--care being
taken to make the, casing and covering as close as possible, so as to exclude
the air. The articles, so covered up are exposed to a sufficient degree
of heat to restore: the required degree of malleability. This part of the process.
requires. care; and until the workman has had sufficient experience to, conduct
it. properly, I use a small trial-bar. of the same material (placed in the box or
case: containing. the articles), which can be occasionally withdrawn to test. the
progress of the treatment. When the density and close compact texture of
the material obtained by, the use of wrought iron alone are not required, I use,
a mixture of cast iron in various proportions, but not exceeding the weight of
the wrought iron; and when articles are required of a texture and nature to
take the temper. of: steel; I use a mixture of steel in various proportions, but
not exceeding the weight of the, wrought iron, the proportion of cast iron
and steel. depending on the texture and nature of the article required.- These
mixtures.being melted, are to be cast into, moulds, and annealed in the manner
already described:
"
71
Having now described the nature of my said Invention, and in what manner
the same is to be performed, I wish it to be understood that I do not claim as
of my Invention the melting of wrought iron, that having already been
practised to a limited extent; but I do claim the treating and applying
wrought iron by. melting the same by itself, or with a mixture of cast iron and

page_text: steel, and the reproducing malleability in the castings of the molten iron by
annealing such castings, as above described.
In witness whereof, I, the said William Rocke, have hereunto set my
hand and seal, this Sixth day of May, in the year of our Lord One
thousand eight hundred and forty-eight.
AND BE IT REMEMBERED, that on the Sixth day of May, in the
year of our Lord 1848, the aforesaid William Rocke came before our said
Lady the Queen in Her Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.
Enrolled the Seventeenth day of May, in the year of our Lord One