CERTAIN IMPROVEMENTS IN OB ADDITIONS TO THE FURNACE, AS HITHERTO USED, FOR SMELTING ORE AND MAKING PIG IRON
Year: 1802

page_text: AFE
JAMES
BIRCH, of Abernant, in the County of Glamorgan, Engineer, send greeting.
WHEREAS His present most Excellent Majesty King George the Third,
in and by His Letters Patent, under His Great Seal of the United Kingdom
of Great Britain and Ireland, bearing date at Westminster, the Sixth day of
April, in the forty-second year of His reign, for Himself, His heirs and
successors, did give and grant unto me, the said James Birch, my executors,
administrators, and assigns, His especial licence, full power, sole priviledge
and authority, that I, the said James Birch, my executors, administrators,
and assigns, and every of them, by myself and themselves, or by my and their
deputy or deputies, servants or agents, or such others as I, the said James
Birch, my 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 of years therein expressed, should and lawfully might make, use, exercise,
and vend, within that part of His said Majesty's United Kingdom called
England, His Dominion of Wales, and the Town of Berwick-upon-Tweed,
my Invention of "CERTAIN IMPROVEMENTS IN OB ADDITIONS TO THE FURNACE,
AS HITHERTO USED, FOR SMELTING ORE AND MAKING PIG IRON;" in which said
Letters Patent there is contained a proviso obliging me, the said James Birch,
by an instrument in writing under my hand and seal, particularly to describe
and ascertain the nature of my said Invention, and in what manner the
same is to be performed, and to cause the same to be inrolled in His said
Majesty's High Court of Chancery within one calendar month next and

page_text: immediately after the date of the said recited Letters Patent, as in and
by the same, relation being thereunto had, will more fully and at large
appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
James Birch, do hereby describe and ascertain the nature of my said Inven-
tion, and the manner in which the same is to be performed, by the Plan
or Drawing in the margin of these Presents, and as follows, that is to say:-
The different views of the same things are marked. with the same letter.
Figure 1, front elevation of furnace. and two.cast houses.-A, the stack of
the furnace; B, B, the two cast houses; C, the bridge house. a, a, the two
new-invented tweres.
Figure 2, end view of furnace and cast houses.-A, the stack of the
furnace; B, the cast house; C, the bridge house.
Figure 3, the ground plan of furnace and cast houses.-A, the stack of
the furnace; B, B, the two cast-houses. a, a, the two new-invented tweres.
b, b, the two new-invented tymps. e, the hearth wherein the metal is con-
tained. d, d, and d, d, the two beds of pigs. f,f, the two new-invented blow-
pipes.
Figure 4, the section of the furnace stack, shewing: the two new-invented
tymps and tweres.-A, A, the outside walls of the furnace stack. 'a, a; the
two new-invented twerės. b,b, the two new-invented tymps. e, the hearth
wherein the metal is contained. e, the inside of the furnace stack. In the
. said. Drawings. parts of the furnace as heretofore constructed are introduced,
not for the purpose of claiming, as to the construction of them, any exclusive
right by virtue of the said recited Letters Patent, such parts being introduced
mercly for the purpose of more accurately explaining the said Invention,
which consists in the application of two tweres on the same side, and two
tymps opposite each otlier,, as shewn in the. said Drawing in the margin of
these Presents. By this. Invention a much greater quantity of iron may be
made out of one furnace, with less materials than heretofore, and-with-less
blast, and a power will likewise be obtained of always making the iron better
in quality.
In witness whereof, I, the said James Birch, bave hereunto set my
hand and seal, the Fourteenth day of April, in the forty-second year
of the reign of our Sovereign Lord George the Third, by the grace
of God of the United Kingdom of Great Britain, and Ireland King,
Defender of the Faith, and in the year of our Lord One thousand
In witness whereof, I, the said James Birch, have hereunto set my
hand and seal, the Fourteenth day of April, in the forty-second year
of the reign of our Sovereign Lord George the Third, by the grace
of God of the United Kingdom of Great Britain, and Ireland King,
Defender of the Faith, and in the year of our Lord One thousand
eight hundred and two.

page_text: AND BE IT REMEMBERED, that on the same Fourteenth day of April,
in the year above mentioned, the aforesaid James Birch came before our Lord
the King, in His Chancery, and acknowledged the Specification aforesaid,
and all and every thing therein contained, in form above written. And also
5 the Specification aforesaid was stamped according to the tenor of the
Statute in that case made and provided.
Inrolled the Twenty-second day of April, in the year above written.