IMPROVEMENTS IN THE MANU- FACTURE OF CAST STEEL TUBES AND CYLINDERS, APPLICABLE ESPECIALLY IN THE MANUFACTURE OF CANNON, MORTARS, AND OTHER GUNS, ALSO STEAM AND OTHER CYLINDERS
Year: 1855

page_text: LETTERS PATENT to John Davie Morries Stirling, of Black Grange,
Clackmannan, N. B., for the Invention of "IMPROVEMENTS IN THE MANU-
FACTURE OF CAST STEEL TUBES AND CYLINDERS, APPLICABLE ESPECIALLY IN THE
MANUFACTURE OF CANNON, MORTARS, AND OTHER GUNS, ALSO STEAM AND OTHER
CYLINDERS."
Sealed the 4th April 1856, and dated the 27th October 1855.
PROVISIONAL SPECIFICATION left by the said John Davie Morrics
Stirling at the Office of the Commissioners of Patents, with his Petition,
on the 27th October 1855.
I, JOHN DAVIE MORRIES STIRLING, of Black Grange, Clackmannan, N. B.,
do hereby declare the nature of the Invention for "IMPROVEMENTS IN THE
MANUFACTURE OF CAST STEEL TUBES AND CYLINDERS, APPLICABLE ESPECIALLY IN
THE MANUFACTURE OF CANNON, MORTARS, AND OTHER GUNS, ALSO STEAM AND OTHER
CYLINDERS," to be as follows:-
This Invention consists in casting steel tubes and cylinders in highly heated
moulds, and in afterwards heating the moulds with the castings therein; they
are retained at a red heat for some time, and are then cooled gradually. The
tubes or cylinders thus cast and annealed may then be extended by hammering,
drawing, or rolling, as described in a Patent granted to me, and dated the
Twenty-seventh of February, One thousand eight hundred and fifty-four.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Davie Morries Stirling in the Great Seal Patent Office
on the 25th April 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
DAVIE MORRIES STIRLING, of Black Grange, Clackmannanshire, N. B., send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of October, in the year of our
Lord One thousand eight hundred and fifty-five, in the nineteenth year of Her
reign,, did, for Herself, Her heirs and successors, give and grant unto me, the
said John Davie Morries Stirling, Her special license that I, the said John
Davie Morries Stirling, my executors, administrators, and assigns, or such
others as I, the said John Davie Morries Stirling, my exccutors, adminis-
trators, and 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 TUBES AND
CYLINDERS, APPLICABLE ESPECIALLY IN THE MANUFACTURE OF CANNON, MORTARS,
AND OTHER GUNS, ALSO STEAM AND OTHER CYLINDERS," upon the condition (amongst
others) that I, the said John Davie Morries Stirling, my executors or
administrators, by an instrument in writing under my, or their, or one of
their hands and seals, 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 I, the said John Davic Morries Stirling, do hereby
declare the nature of the said Invention, and in 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:―
I
This Invention consists in casting steel tubes and cylinders in highly heated
moulds, and in afterwards heating the moulds with the castings therein; they
are retained at a red heat for some time, and are then to cool gradually. The
tubes or cylinders thus cast and annealed may then be extended by hammer
ing, drawing, or rolling, as described in a Patent granted to me, and dated
the Twenty-seventh day of February, One thousand eight hundred and fifty-
four.

page_text: Having thus stated the nature of my said Invention, I will proceed to
describe more fully the manner of performing the same. The moulds I prefer
are those made of sand or loam, and when they have been heated to a high
degree of heat the melted steel is run into them, and they are kept heated for
some time; the moulds and castings are then allowed to cool very slowly; the
hollow castings of steel thus made are then to be extended in length by any
convenient means. I prefer, however, to employ the means described in the
Specification of my Patent of the Twenty-seventh day of February, One
thousand eight hundred and fifty-four.
In witness whereof, I, the said John Davie Morries Stirling, have
hereunto set my hand and seal, this Twenty-third day of April, in the
year of our Lord One thousand eight hundred and fifty-six.
Witness,
MCE SAUTTER.
JOHN DAVIE MORRIES STIRLING. (L.S.)