A NEW, CHEAP, AND VERY ADVANTAGEOUS METHOD OF MAKING AND PREPARING POT AND PEARL ASHES OF MATERIALS NEVER BEFORE MADE USE OF BY ANY PERSON OR PERSONS WHOMSOEVER FOR THE LIKE PURPOSE, AND WITH NEW FURNACES OF CURIOUS STRUCTURE, CONTRIVED FOR EXPEDITING AND FACILITATING THE PROCESS, AND WHICH WERE NEVER BEFORE USED OR EMPLOYED BY ANY OTHER PERSON IN THE LIKE MANUFACTURE
Year: 1779

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
SHANNON, of the Parish of Saint Martin-in-the-Fields, in the County of
Middlesex, Chymist, send greeting.
WHEREAS His most Excellent Majesty King George the Third did, by
His Letters Patent under the Great Seal of Great Britain, bearing date the
Tenth day of May last past, in the nineteenth year of His reign, give and grant
unto me, the said Richard Shannon, His especial licence that I, the said
Richard Shannon, my executors, administrators, and assigns, during the term
of years therein expressed, should and lawfully might use, exercise, and
vend, within England, Wales, and Town of Berwick-upon-Tweed, my Inven-
tion of "A NEW, CHEAP, AND VERY ADVANTAGEOUS METHOD OF MAKING AND
PREPARING POT AND PEARL ASHES OF MATERIALS NEVER BEFORE MADE USE OF BY ANY
PERSON OR PERSONS WHOMSOEVER FOR THE LIKE PURPOSE, AND WITH NEW FURNACES
OF CURIOUS STRUCTURE, CONTRIVED FOR EXPEDITING AND FACILITATING THE PROCESS,
AND WHICH WERE NEVER BEFORE USED OR EMPLOYED BY ANY OTHER PERSON IN
THE LIKE MANUFACTURE;" in which said Letters Patent there is contained
a proviso obliging me, the said Richard Shannon, under my hand and
seal, to cause a particular description of the nature of my said Invention, and
how the same is to be performed, to be inrolled in His Majesty's High
Court of Chancery within four calendar months 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 in compliance with the said proviso, I, the said
Richard Shannon, do hereby declare that my said Invention of A New,

page_text: Cheap, and Advantageous Method of Making and Preparing Pot and Pear
Ashes of Materials never before made use of by any Person or Persons what-
soever for the like Purpose, and with New Furnaces of Curious Construction,
contrived for Expediting and Facilitating the Process, and which were never
before Used or Employed by any other Person in the like Manufacture, is
described in the manner following (that is to say) :-
For making Pot Ashes.-Take of sal arcanum, duplicatum, sal polychrestum,
sal tarturum vitriolicum, sal de duobus, sal sapientia, sal enixum, sal ante-
febrile, sal nitrum vitriolicum, sal ducis, stolstatia, sal catholicum, and of all
or any neutral salts and saline substances composed of vitriolic acid and fixed
alkali sixteen parts, phlogistion two parts, marine salt four parts, salt of
steel two parts, and of calcarious earth two parts; adjust the aggregate
quantity of these so as to fill the potts in the furnace A. Ignite these
materials slowly, and conduct or force a stream or current of atmospheric air
thro' the containing potts untill gradually interrupted by the materials coming
into.fusion. When perfectly fused, let the saline, concrete be taken out,
and the sulphur formed during the concremation sublimed with a very intense
heat; then from the remaining salt, dissolved in eight times its weight of
water, and precipitate what sulphur is still combined with the.alcali by impreg-
nating the solution with fix'd air, draw off the supernatant fluid, depurate with
clean vegetable ashes and lime, and inspisate the desulpharated lixivium to a
solid consistence, which put into the furnace B, when after long listion,
it must be fused; when all is cool break and pack up in good casks.
.
For making Pearl Ashes.--Take these pot ashes, prepared as above, and
dissolve them in eight times their weight of pure water; carefully depurate, and
with volatile alcali precipitate the red ocheraus taint from the saline solution,
and further, purify by an impregnation of dephlogisticated air, then impissate
to a solid consistence, fuse it in the furnace (D), and when cold, break and
pack up close in good casks, which may more fully appear by the several Plans
hereunto annexed.
:
'
In witness whereof, I, the said Richard Shannon, have hereunto set my
hand and seal, this Fourth day of September, in the year of our Lord
One thousand seven hundred and seventy-nine.

page_text: AND BE IT REMEMBRED, that on the same Fourth day of September,
in the year above mentioned, the aforesaid Richard Shannon came before our
said Lord the King in His Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stampt according to
the tenor of the Statute made in the sixth year of the reign of their late
Majesty's King William and Queen Mary of England, and so forth.
Inrolled the