IMPROVEMENTS IN THE TUYERES OF BLAST AND OTHER FURNACES AND FIRES
Year: 1854

page_text: LETTERS PATENT to John Holley Swan, of the City of Glasgow, in the
County of Lanark, in Scotland, Commission Merchant, for the Invention
of "IMPROVEMENTS IN THE TUYERES OF BLAST AND OTHER FURNACES AND
FIRES."
Sealed the 14th July 1854, and dated the 9th March 1854.
PROVISIONAL SPECIFICATION left by the said John Holley Swan at
the Office of the Commissioners of Patents, with his Petition, on the
9th March 1854.
I, JOHN HOLLEY SWAN, of the City of Glasgow, in the County of Lanark, in
Scotland, Commission Merchant, do hereby declare the nature of the Invention
for "IMPROVEMENTS IN THE TUYERES OF BLAST AND OTHER FURNACES AND FIRES" to
be as follows:-
This Invention has for its object the making of tuyeres for receiving a con-
stant flow of cold water, as at present; but in place of the water being closed
within the tuyere, the space or spaces for receiving the water is open, thereby
keeping the tuyere cool, but at the same time permitting a free escape of the
water, so that in the event of the tuyere being burned through by the heat of
the furnace, the water when used is not necessarily forced into the furnace
or fire,

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Holley Swan in the Great Seal Patent Office on
the 5th September 1854....
.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HOLLEY SWAN, of the City of Glasgow, in the County of Lanark, in Scotland,
Commission Merchant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Ninth day of March, in the year of our Lord
One thousand eight hundred and fifty-four, in the seventeenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Holley Swan, Her special licence that I, the said John Holley
Swan, my executors, administrators, and assigns," or such others as I, the
said John Holley Swan, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully night 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
TUYERES OF BLAST AND OTHER FURNACES AND FIRES," upon the condition (amongst
others) that I, the said John Holley Swan, by an instrument in writing under my
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 I, the said John Holley Swan, 'do hereby declare
the nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof (that is to say) :-
This Invention has for its object the making of tuyeres for receiving a con-
stant flow of cold water, as at present; but in place of the water being closed
within the tuyere, the space or spaces for receiving the water is open, thereby
keeping the tuyere cool, but at the same time permitting a free escape of.the
water, so that in the event of the tuyere being burned through by the heat of
the furnace, the water when used is not necessarily forced into the furnace
or fire.
Having thus stated the nature of my Invention, I will proceed to describe
the manner of performing the same.

page_text: DESCRIPTION OF THE DRAWING.
Figures 1 and 2 show two forms of cast iron tuyere; and Figure 3, a wrought
iron tuyere constructed according to my Invention; Figure 4 shows a hori-
zontal section; Figure 5, an elevation; and Figure 6, a vertical section of a
tuyere-room of a blast furnace having tuyeres applied thereto, constructed
according to my Invention. The nozel of the blowing pipe enters the central
part of the hollow vessel or tuyere A, A, and water is supplied to the interior
of the hollow tuyere by the pipe a', and flows through it and away at the
passage a, as shown; and the exterior of the tuyere will offer a large extent of
cooling surface to the roof d and the surrounding building.
Having thus described the nature of my Invention, and the manner of
performing the same, I would have it understood that what I claim is, the
manufacture of tuyeres, herein described.
In witness whereof, I, the said John Holley Swan, have hereunto set my
hand and seal, this Second day of September, in the year of our Lord
One thousand eight hundred and fifty-four.
Witness,
J. M. TAYLOR,
of the City of Glasgow,
Solicitor.
JOHN HOLLEY SWAN. (L.S.)