MAKING OR PRODUCING FAT OR TALLOW
Year: 1799

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TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILSON
FITZGERALD, of the Inner Temple, London, Esquire, send greeting.
⚫ WHEREAS His present Majesty King George the Third, by His Letters
Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Sixteenth day of July now last past, hath given and granted
unto me, the said Wilson Fitzgerald, my executors, administrators, and
assigns, special licence, full power, sole priviledge and authority, to make,
use, exercise, and vend, within England, Wales, and the Town of Berwick |
upon-Tweed, during the term of years therein expressed, my Invention of
"MAKING OR PRODUCING FAT OR TALLOW;" in which said Letters Patents there
is contained a provisoe, obliging me, the said Wilson Fitzgerald, by an instrument
in writing under my hand and seal, to cause a particular description of the nature
of my said Invention, and in what manner the same is to be performed, to be
inrolled in His Majesty's High Court of Chancery within one calendar month
next after the date of the said recited Letters Patent, as in and by the same
(relation being thereunto had) may more fully and at large appear.
NOW KNOW YE, that I, the said Wilson Fitzgerald, in compliance with
the said provisoe, do hereby declare that the nature of my said Invention,
and the manner in which the same is to be made and performed, is particularly
described and ascertained in the following manner (that is to say):-

page_text: My Invention of making or producing fat or tallow consists in my
exposing any kind of animal, flesh or muscle in such circumstances, and
exposed to the action of such agents, that during the decomposition of such
animal substances, the principles of which fat or tallow is composed (whether
these be hydrogene, carbon, and oxygene, or whatever they may be), when
liberated from the flesh or muscle, or from the agents employed, or from both,
may, by the exertion of a new chemical affinity, be brought into union.
My method is this: I first take any quantity of cow, horse, dog, or other
animal flesh or carrion, and expose it for a time to any or a part of the
following mentioned substances in their several and ordinary degrees of
strength and purity, and to such variation and state of temperature that
already may exist or afterwards be produced by chemical means, and found
by experiment to be most favorable to such a result.
NOW KNOW YE, my principle is the oxygenous or acidifying one, the
apparent promater, of the decomposition and agent producing the fat or tallow
from the animal matter submitted to change; I take then any quantity of
strong fuming nitrous or nitric acid, which from its facility of decomposition
is superior to any other, acid, and having divided the animal flesh intended to
be employed, I pour the acid upon it, which effects the decomposition required,
and produces the fat or tallow, by a new arrangement of primary existing
principles taking place; or, I,take of sulphuric acid with one-third of nitrous
or nitric acid, or, which is better, two parts nitrous or nitric with one
muriatic acid, or of oxymuriatic acid, and after an exposure of the fleshy
substance for some time to the chemical action of any part or, all of these
different substances, I encompass the change and engender the fat,or tallow, as
before, stated. Or, lastly, having procured a compound of lime, sulphate of
potash, allum, and pyrites, I expose to their action and submerge the
mechanically divided flesh in water, by which means I operate its conversion,
and the production of fat or tallow follows.
In witness whereof, I, the said Wilson Fitzgerald, have hereunto set my
hand and seal, this-Twelfth day of August, in the thirty-ninth year
of the reign of His Majesty King George the Third, and in the year of
our Lord One thousand seven hundred and ninety-nine.
WILSON FITZGERALD. (L.S.)

page_text: AND BE IT REMEMBERED, that on the same Twelfth day of August,
in the year above mentioned, the aforesaid Wilson Fitzgerald came before
our Lord the King in His Chancery, and acknowledged the Specifi-
cation aforesaid, and all and every thing therein contained, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute in that case made and provided.
Tnrolled the Thirteenth day of Auoust in the