A METHOD OF MAKING COLOURED PAPER SUPERIOR FOR BRIGHTNESS AND RICHNESS OF COLOUR TO ANY MADE BY ANY OTHER PERSON, AND WHICH PAPER WHEN MADE AFTER THE MANNER INVENTED BY ME MAY BE USED AS WELL FOR THE PURPOSE OF HANGING ROOMS AS FOR WRITING, PRINTING, DRAWING, AND VARIOUS OTHER PURPOSES OF PAPER
Year: 1796

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
COBB, of Banbury, in the County of Oxon, Banker, send greeting.
WHEREAS the King's most Excellent Majesty, by His Letters Patent under
the Great Seal of Great Britain, bearing date at Westminster, the Nineteenth
day of November, in the thirty-seventh year of His reign, did give and grant
unto me, the said Thomas Cobb, His special licence that I, the said Thomas
Cobb, should and might make, use, exercise, and vend, within that part of
His Majesty's Kingdom of Great Britain called England, Dominion of Wales,
and Town of Berwick-upon-Tweed, "A METHOD OF MAKING COLOURED PAPER
SUPERIOR FOR BRIGHTNESS AND RICHNESS OF COLOUR TO ANY MADE BY ANY OTHER
PERSON, AND WHICH PAPER WHEN MADE AFTER THE MANNER INVENTED BY ME MAY BE
USED AS WELL FOR THE PURPOSE OF HANGING ROOMS AS FOR WRITING, PRINTING,
DRAWING, AND VARIOUS OTHER PURPOSES OF PAPER;" in which said Letters Patent
is contained a proviso, that if I, the said Thomas Cobb, did not particularly
describe and ascertain the 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 cause the same to be inrolled in His said Majesty's High Court
of Chancery within one calendar month next and immediately after the date
of the said Letters Patent, that then the said Letters Patent, and all liberties
and advantages whatsoever thereby granted, should utterly cease, determine,
and become void, any thing therein-before contained to the contrary thereof

page_text: in anywise notwithstanding, as in and by the said Letters Patent, relation
being thereunto had, may more fully and at largo appear.
NOW KNOW YE, that I, the said Thomas Cobb, in complianco with the
the said proviso, do hereby describo and ascertain the naturo of my said
Invention, and the manner in which the same is to be performed, as follows
(that is to say):
When the rags or other materials are sufficiently washed by means of the
paper engine, made white, and reduced to half stuff in the usual manner for
beating, I drain off the water and convey the half stuff' intended to be coloured
into the vessel or vessels in which it is to be dyed, where I subject it to the
processes commonly used in dyeing of linnen, cotton, silk, or wool, according
to the materials of which the half stuff is composed. These processes
appertain to the art of dyeing, as commonly practised by dyers, and described
in the treatises of Hilot, D'appligny, Macquer, Welson, Podmer, Haussman,
Bertholet, Bancroft, and others. I only vary by preparing separately from
the usual materials for dyeing a clear decoction or infusion of the dyeing
materials (for producing bright and rich colours, viz', scarlett, yellow, green,
pink, mazarine and China blue), which, previous to the half stuff being
immersed therein, are strained, filtered, or allowed time to deposit their grosser
parts. In cases where heat must necessarily be applied during the dyeing of
the half stuff, which are well known to dyers, I use false bottoms to the vessel
or vessels in which it is to be dyed, which false bottoms prevent the half stuff
from touching the botto:n of the vessel and thereby being injured by the fire,
and should be pierced with small holes to admit the circulation of the
decoctions or infusions in the vessell. When the half stuff is sufficiently
coloured, remove it from the dyeing vessels, and return it to the engine,
and after having washed it for a short time in those cases which requiro
it, in order to brighten the colours, and which are well known to dyers, I
beat it by the paper engine as usual into pulp or stuff for the vat, after which
it is made into paper in the usual manner. In such colours as are dyed cold,
the decoctions or infusions may be mixed with the half stuff whilst in the
engine itself, or it may be dyed in a separate vessel; in those cases it is to bo
beat into pulp or stuff, as before mentioned; the dye of the colour wanted may
be given to the materials for making the paper either before or when in a
state fit for the vat, and either in the engine, the stuff clicst, or in the vat, or
in any proper vessel for dyeing, by putting the decoctions or infusions into the
one or the other, as is most convenient, the engine or vat. I have found so,
in dyeing such colours as require heat. I occasionally use all the above
methods; but the colours when given to the half stuff are generally produced

page_text: with the best effect, especially those that are benefitted by washing after
dycing.
In witness whereof, I, the said Thomas Cobb, have hereunto set my hand
and seal, the Nineteenth day of December, in the year of our Lord
One thousand seven hundred and ninety-six.