AN IMPROVED METHOD OF DYING COTTON WOOL,. COTTON TWIST, COTTON WEPT, AND COTTON CLOTH OF A NANKEEN COLOUR AND OF A BUFF COLOUR
Year: 1804

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
FRITII, of Broughton, in the County of Lancaster, Dyer, send greeting.
WHEREAS His most Excellent Majesty King George the Third, did, by
His Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Third day of October,
in the forty-fourth year of His reign, give and grant unto me, the said Robert
Frith, my exors, adññiors, and assigns, His especial licence, full power, sole
privilege and authority, that I, the said Robert Frith, my exors, admors,
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 Robert
Frith, my exors, adñiors, 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 the United Kingdom of Great Britain and Ireland
called England, the Dominion of Wales, and Town of Berwick-upon-Tweed,
my Invention or discovery of "AN IMPROVED METHOD OF DYING COTTON WOOL,.
COTTON TWIST, COTTON WEPT, AND COTTON CLOTH OF A NANKEEN COLOUR AND OF
A BUFF COLOUR;" in which Letters Patent there is contained a proviso.
obliging me, the said Robert Frith, particularly to describe and ascertain the

page_text: nature of my said Invention, and in what manner the same is to be performed,
by an instrument in writing under my hand and seal, and to cause the same
to be inrolled in His Majesty's High Court of Chancery within one calendar
month next and immediately after the date of the said Letters Patent, as
in and by the same Letters Patent, relation being thereunto had, may more
fully and at large appear.
NOW KNOW YE, that in pursuance of and in compliance with the said
recited proviso, I, the said Robert Frith, do hereby declare that the nature
of my said Invention, and the manner in which the same is to be performed,
is as follows:-
My Invention or Discovery of an Improved Method of Dying Cotton Wool,
Cotton Twist, Cotton Weft, and Cotton Cloth, of a Nankeen Colour, and of a
Buff Colour, consists in the use, either conjoined or successive, of an infusion
or decoction of galls, mahogany bark, alder bark, oak bark, elin bark, shumac
and madder, or of any one, two, or more of them, and of a solution of iron
prepared by means of the sulphuric, uitric, muriatic, and acetous acids, or
any one or more of them, or by any other acid or acids commonly used for
such solutions, or prepared in any other way in which the solution of iron
commonly called iron liquor is prepared.
And I disclaim, under this Patent, the use either of the above infusion or
decoction solely, or of the above solution solely, and confine my Invention or
discovery and right to the use of both, either jointly or successively, the same
having never been before, either jointly or successively, used in the same pro-
cess in dying buff or nankeen, and being substances which probably were not
tried for that purpose, because they are the common ingredients used in making
black ink.
I also disclaim any right to the Invention of making, or preparing the
above infusion, or decoction and solution, or any of them, reserving, never-
theless, to myself, such right as I have under a former Patent, dated the
Twenty-fifth day of May, One thousand seven hundred and ninety-eight, to my
Invention of a then new chemical method of dying different permanent colours
upon cotton, linen, woollen, and silk, for the term in. such. former Patent
mentioned.
As it is necessary, in the use of my Invention here specified, to connect
it with other processes in dying before known, I shall now state the manner
in which I most commonly connect it with other processes, and which I believe
to be the most advantageous mode of connecting or using it..
..After washing the substance to be dyed in hot-water: first, I dip it into a

page_text: infusion or decoction of galls, mahogany bark, alder bark, oak bark, elm bark,
shumac, and madder, or of any one, two, or more of them; secondly, I pass it
through a solution of iron, prepared as before-mentioned; thirdly, I wash-it-well
in warm water; fourthly, I pass it through a solution of soap in water, or through
a solution of any of the alkalis, either mild or caustic, in water or through-lime
water; fifthly, I dip it while remaining wet into a solution of tin, prepared by
means of either the nitric acid, or the muriatic acid, or the nitro-muriatic acid,
diluted with water. After washing the substance so dyed in warm water, and
drying it in the usual way, the operation is complete. The first and second
operations may be performed in a different order, that is; the substance to be
dyed may be first put into the solution of iron, and afterwards dipt into the
before-mentioned infusion or decoction, or the infusion or decoction.and solution
of iron may be mixed together, and the substance to be dyed may be passed
through the mixture, but I prefer the successive use of the infusion or
decoction and the solution of iron in the order in which I have first mentioned
them. It may be proper to state, for the information of those persons who
are not conversant with the art of dying, that in the above process an infusion
or decoction of galls produces a yellowish buff colour, and that the addition of a
small quantity of mahogany bark or alder bark to the infusion or decoction of
galls produces a proper buff colour, and that the addition of a greater quantity
of mahogany bark or alder bark to the infusion or decoction of galls produces
a nankeen colour, the proportions of each of which may be varied according
to the shade of colour which the dyer wishes to produce.
In witness whereof, I, the said Robert Frith, have hereunto set my
hand and seal, the Thirty-first day of October, in the forty-fifth 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 Faith, and in the year of our Lord One thousand eight
hundred and four.

page_text: AND BE IT REMEMBERED, that on the Thirty-first day of October,
in the year of our Lord one thousand eight hundred and four, the afore-
said Robert Frith 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 for that
purpose.
Inrolled the Second day of November, in the year of our Lord One
thousand eight hundred and four.