CERTAIN 'IMPROVEMENTS IN "DYEING
Year: 1856

page_text: LETTERS PATENT to Frederick Albert Gatty, of Accrington, in the County
of Lancaster, Manufacturing Chemist, for the Invention of "CERTAIN
'IMPROVEMENTS IN "DYEING."
Sealed the 2nd January 1857, and dated the 23rd August 1856.
-PROVISIONAL SPECIFICATION left by the said Frederick Albert Gatty
at the Office of the Commissioners of Patents, with his Petition, on
the 23rd August 1856.
'I, FREDERICK ALBERT GATTY, of Accrington, in the County of Lancaster,
Manufacturing Chemist, do hereby declare the nature. of the said Invention
for "CERTAIN IMPROVEMENTS IN DYING," to be as follows:-
My Invention consists in the use of chloride of sodium, or common salt, in
dying, with garancine, alizarine, and other preparations of madder.
The chloride of sodium, or common salt, may either be put into the vat with
the other materials required in preparing the dye bath, or it may be previously
mixed with the dye materials.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederick Albert Gatty in the Great Seal Patent Office on
the 18th February 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
ALBERT GATTY, of Accrington, in the County of Lancaster, Manufacturing
Chemist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of August, in the year of our Lord
One thousand eight hundred and fifty-six, in the twentieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant- unto me, the
said Frederick Albert Gatty, Her special license that I, the said Frederick
Albert Gatty, my executors, administrators, and assigns, or such others as I,
the said Frederick Albert Gatty, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and at all
times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "CERTAIN IMPROVEMENTS IN DYING," upon the condition (amongst others)
that I, the said Frederick Albert Gatty, my executors or administrators, by
an instrument in writing under my, or their, A hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed in
the Great Seal Patent Office within six calendar months next and imme
diately after the date of the said Letters Patent.
or one of their
NOW KNOW YE, that I, the said Frederick Albert Gatty; do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement (that is to say):-
The nature of my Invention consists in the use of chloride of sodium, or
common salt, in dying, with garancine, alizarine, and other preparations of
madder.
In performing my Invention, I find that one pound of chloride of sodium
placed in the vat with twenty-five pounds of garancine, alizarine, or other
preparation of madder produces a good result; the amount of chloride of
sodium may, however, be increased up to four pounds with benefit. In some
cases the proportion may be augmented, as an excess of chloride of sodium is
not injurious to the dye.

page_text: Instead of mixing the chloride of sodium with the dye materials in the vat,
as described, the chloride of sodium may be previously mixed with the dye
materials.
Having thus particularly described the nature of my Invention, and the
manner of performing the same, I declare that I claim the use of chloride of
sodium, or common salt, in dying, with garancine, alizarine, and other pre-
parations of madder.
In witness whereof, I, the said Frederick Albert Gatty, have hereunto set
my hand and seal, this Seventeenth day of February, in the year of our
Lord One thousand eight hundred and fifty-seven.
Witness,
H. B. BARLOW,
Manchester.
F. A. GATTY. (L.B.)