IMPROVEMENTS IN BLAST FURNACES
Year: 1873

page_text: LETTERS PATENT to Jonathan Green, of Brymbo, in the County of
Denbigh, Furnace Manager, for the Invention of "IMPROVEMENTS
IN BLAST FURNACES."
Sealed the 28th November 1873, and dated the 21st August 1873.
PROVISIONAL SPECIFICATION left by the said Jonathan Green at the
Office of the Commissioners of Patents, with his Petition, on the
21st August 1873.
I, JONATHAN GREEN, of Brymbo, in the County of Denbigh, Furnace
Manager, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN BLAST FURNACES," to be as follows :—
My Invention relates to an improved mode or arrangement for dis-
charging the molten "slag," cinder, or scoria from the hearths of bast.
furnaces, and is applicable to existing as well as to new furnaces.
In place of making the outlet for the "scoria" through an opening
below the "tymp plate," my Invention consists in causing the scoria

page_text: "
to discharge through the ordinary "tymp plate by forming a hole
therein. The tymp plate," and particularly that part through which
the scoria passes, is kept cool in the ordinary manner, viz., by a current
of cold water, which is made to pass or circulate through channels or
passages formed in the tymp plate.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Jonathan Green in the Great Seal Patent Office
on the 20th February 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JONATHAN
GREEN, of Brymbo, in the County of Denbigh, Furnace Manager, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-first day of August, in the year
of our Lord One thousand eight hundred and seventy-three, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Jonathan Green, Her special license
that I, the said Jonathan Green, my executors, administrators, and assigns,
or such others as I, the said Jonathan Green, my executors, admini-
strators, 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 BLAST FURNACES,"
upon the condition (amongst others) that I, the said Jonathan Green,
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 Jonathan Green, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement and the accompanying Drawings (that is to say) :-
•
My Invention relates to an improved mode or arrangement for diş-

page_text: charging the molten "slag," cinder, or scoria from the hearths of blast
furnaces, and is applicable to existing as well as to new furnaces.
In place of making the outlet for the scoria through an opening below
the "tymp plate," as is usual, my Invention consists in causing the
scoria to discharge through the,ordinary "tymp plate" by forming a holo
therein. The "tymp plate," and particularly that part through which the
scoria passes, is kept cool in the ordinary manner, namely, by a current
of cold water, which is made to pass or circulate through channels or
passages formed in the "tymp plate."
My Invention is illustrated by Fig. 1 of the accompanying Drawings,
which shows a vertical section of the base part of a blast furnace, with
my improvements applied.
Fig. 2 is a front view, and Fig. 3 an edge view of the tymp plate
detached, and on an enlarged scale; and Fig. 4 is a longitudinal and
Fig. 5 a cross section of the same upon the line A, B, Fig. 4.
a is the tymp plate, made of cast iron, with wrought-iron tubing (6)
bent as shown, and cast in the plate. Water is passed through this tube
(b) to keep the plate cool in the ordinary manner. a¹is the hole through
which the molten scoria passes from the furnace. a² is a holo through
the tymp plate in case the hole a should become stopped, and could not
be readily opened, this supplementary hole as being closed when the
hole (a) is in use.
I have now particularly described the nature of my Invention, and the
manner of carrying the same into effect, and claim as my Invention, the
arrangement of the ordinary "tymp plate," with a hole a' for the scoria
to pass out from the furnace, as herein-before described and illustrated
by the accompanying Drawings.
In witness whereof, I, the said Jonathan Green, have hereunto set
my hand and seal, this Eighteenth day of February, in the
year of our Lord One thousand eight hundred and seventy-
four.