Year: 1812

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JEREMIAH
DIMMACK, of Moor Croft Iron Works, in the Parish of Bilstone, in the County.
of Stafford, Manufacturer of Iron, send greeting.
WHEREAS His present Majesty King George the Third, in and by His
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Twenty-sixth day of May last past; for Himself, His heirs and
successors, did give and grant unto me, the said Jeremiah Dimmack, my
executors, administrators; and assigns, His especial licence, full power, sole
privilege and authority, that I, the said Jeremiah- Dimmack, my executors,
administrators, and assigns, by myself and themselves, or by my and their
deputy or deputies, servants or agents, or such others as I, the said Jeremiah
Dimmack, 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 of,
exercise, and vend, within that part of the United Kingdom of Great
Britain and Ireland called England, the Dominion of Wales, and Town of

page_text: "
Berwick-upon-Tweed, my Invention and NEW METHOD OF MANUFACTURING
IRON IN ITS DIFFICULT STAGES OR FORMS OF BLOOMS, SLABS, PILES, BARS, RODS,
HOOPS, SHEET IRON, OR OTHER MALLEABLE IRON, FROM PIGS OR PLATE IRON, IN A
PUDDLING BALLING BROOM MILL SHEET IRON FURNACE, OR ANY OTHER AIR FURNACE
WHATSOEVER, WITH COKES, PIT COAL LUMPS, SLACK SMALL COAL OR CHARCOAL, USED
EITHER MIXED OR SEPARATE, BY THE PECULIAR APPLICATION OF BLAST; THAT BY THE
ADOPTION AND USE OF THE ABOVE DISCOVERY AND INVENTION A CONSIDERABLE SAVING
WILL BE MADE IN THE CONSUMING OF FUEL, AND THAT SAVING WILL NOT ONLY
RESULT IN THE QUANTITY BUT IN THE QUALITY OF THE FUEL USED, INAS MUCH AS
SMALL COAL MAY BE EFFECTUALLY SUBSTITUTED FOR LARGE COAL, AND THE QUANTITY
OF SMALL COAL, WHICH ACCORDING TO THE PRESENT METHOD IS LEFT BEHIND IN THE
PITS USELESS AND OF NO VALUE, WILL, BY THE NEW METHOD, BE INTIRELY CONSUMED
AND TURNED TO AN ACCOUNT; THAT AN ADDITIONAL SAVING TO A CONSIDERABLE AMOUNT
WILL ALSO TAKE PLACE IN THE IRON MANUFACTURED, WHICH WILL ENABLE THE MANU-
FACTURER TO SERVE THE PUBLIC WITH AN ARTICLE OF EQUAL QUALITY AT A LOWER
PRICE;" in which said Letters Patent there is contained a proviso, that if I,
the said Jeremiah Dimmack, should not particularly describe and ascertain
the nature of my said Invention, and in what manner the same is to be per-
formed, by an instrument in writing under my hand and seal, and cause the
same to be inrolled in His Majesty's High Court of Chancery within two
calendar months next and immediately after the date of the said now reciting
Letters Patent, that then the said Letters Patent, and all liberties and advan-
tages whatsoever thereby granted, should utterly cease, determine, and become
vöid, as in and by the same Letters Patent; reference being thereunto had,
will more fully appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Jeremiah Dimmack, do hereby describe and ascertain the nature of my said
Invention by the following description thereof (that is to say) :-
A New and improved Method of Manufacturing Iron in its difficult Stages
or Forms of Blooms, Slabs, Piles, Bars, Rods, Hoops, Sheet Iron, or other
malleable Iron, from Pigs or Plate Iron, in a Puddling Balling Broom Mill
Sheet Iron Furnace, or any other Air Furnace whatsoever, with Cokes, Pit
Coal Lumps, slack small Coal or Charcoal, used either mixed or separate, by
the peculiar Application of Blast; that by the Adoption and Use of the above
Discovery and Invention a considerable Saving will be made in the Consump-
tion of Fuel, and that Saving will not only result in the Quantity but in the
Quality of the Fuel used, inasmuch as small Coal may be effectually substituted
for large Coal, and the Quantity of small Coal, which according to the present
Method is left behind in the Pits useless and of no Value, will, by the New

page_text: Method, be entirely consumed and turned to Account; that an additional
Saving to a considerable Amount will also take place in the Iron manufactured,
which will enable the Manufacturer to serve the Public with an Article of
equal Quality at a lower Price; and the manner the same Invention is to be
performed is as follows (that is to say):-
Take any furnace of the common construction now in use, excepting that
the flue or flues and grate or grates are not so large, but the grate or grates
used must be less at one end than the other, in the proportion of about
eighteen inches to thirty inches, altho' a little variation in the grate or grates
or height of the stack or stacks is not essential to the operation of the blast.
Level with and immediately above the top of the grate or grates, at the end or
ends of the furnace, introduce within an iron pipe or pipes of one inch
diameter more or less, according to the size and use of the furnace; commu-
nicating with a steam engine, water wheel, or any other convenient power,
through and by means of which pipe or pipes a blast of atmospheric air is to
be occasionally conveyed into the furnace, so as to act immediately upon the
fuel, by which means a considerable saving both in fuel and iron is effected.
A stopcock or cocks must be placed upon the iron pipe or pipes which convey
the blast into the furnace, so as to regulate the blast at the pleasure of the
operator, and a damper or dampers must be placed in the middle or other part
of the flue or stack, having an aperture sufficient to carry off the smoke, which
damper or dampers must be occasionally used during the operation.
In witness whereof, I, the said Jeremiah Dimmack, have hereunto set
my hand and seal, this Twenty-second day of June, in the fifty-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 so forth, and in the year of our
Lord One thousand eight hundred and twelve.
JEREMIAH DIMMACK. (L.S.)
Signed, sealed, and delivered, by the
above-named Jeremiah Dimmack, in
the presence of
Jos. ROBINS,

page_text: AND BE IT REMEMBERED; that on the Twenty-second day of June,
in the fifty-second year of the reign of His Majesty King George the Third;
the said Jeremiah Dimmack came before our said Lord the King in His
Chancery, and acknowledged the Instrument aforesaid, and all and every
thing therein contained and specified, in form above written. And also the
Instrument aforesaid was stamped according to the tenor of the Statute made
in the forty-eighth year of His said Majesty's reign.