IMPROVEMENTS IN THE MANUFACTURE OF COLORING MATTERS
Year: 1863

page_text: LETTERS PATENT to Charles Hanson Greville Williams, of Rumford
Street, Glasgow, for the Invention of "IMPROVEMENTS IN THE MANUFACTURE
OF COLORING MATTERS."
Sealed the 2nd November 1868, and dated the 9th May 1863.
PROVISIONAL SPECIFICATION left by the said Charles Hanson Greville
Williams at the Office of the Commissioners of Patents, with his
Petition, on the 9th May 1863.
I, CHARLES HANSON GREVILLE WILLIAMS, of Rumford Street, Glasgow, do
hereby declare the nature of the Invention for "IMPROVEMENTS IN THE
MANUFACTURE OF COLORING MATTERS," to be as follows:-
This Invention has for its object "improvements in the manufacture of
coloring matters. For the purpose of preparing a blue dye, I mix about
one part of rosaniline, or one of its salts, such as the acetate, hydrochlorate,
or sulphate, with about eight parts of oleate of aniline, and heat the same in
any convenient vessel until the mixture assumes a bright blue color
color may be dissolved in spirit and used at once, or it may be subjected to
any of the processes of purification usual with coloring matters derived from
rosaniline.
The

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Charles Hanson Greville Williams in the Great Seal Patent
Office on the 7th November 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
ANSON GREVILLE WILLIAMS, of Rumford Street, Glasgow, send greeting.
WHEREAS ller most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Ninth day of May, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-sixth year of Her
reign, did, for Herself, er heirs and successors, give and grant unto me, the
said Charles Hanson Greville Williams, 1Ier special licence that I, the said
Charles Hanson Greville Williams, my executors, administrators, and assigns,
or such others as I, the said Charles Hanson Greville Williams, 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 "IMPROVEMENTS IN THE MANUFACTURE OF
COLORING MATTERS," upon the condition (amongst others) that I, the said
Charles Hanson Greville Williams, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands and seals,
should particularly 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 nionths next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Charles Hanson Greville Williams,
do hereby declare the nature of the said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained in
and by the following statement thereof, that is to say :-
This Invention has for its object improvements in the manufacture of
coloring matters. To prepare a blue color suitable for dyeing and printing,
I mix one part by weight of rosaniline, or one of its salts, such as the acetate,
hydrochlorate, or sulphate, with eight parts of oleato of aniliue, or with four
parts of oleic acid and four parts of aniline. I then heat the mixture
carefully to a temperature between 360° and 400° Fahrenheit, until the
whole is converted into a deep blue mass, soluble in spirit of wine. Any oleic
acid and aniline remaining in the mixture may be removed by first boiling
with dilute sulphuric acid, and then with coal naphtha or photogen. The
impurities are thus removed, and the coloring matter remains behind in the

page_text: form of a coppery or bronze-like mass. For the purpose of dyeing it is merely
necessary to dissolve this bronze-like matter in spirit of wine, and add it to
the bath.
The word aniline, in this Specification, I intend also to include toluidine, and
other substances very closely resembling aniline, and which are known as the
homologues thereof.
Having thus described the nature of my Invention, and the manner of
performing the same, I would have it understood that I do not confine myself
to the proportions above set forth; but what I do claim is, the converting
rosaniline, or salts of rosaniline, into a blue color, by treating the same with
oleate of aniline.
In witness whereof, I, the said Charles Hanson Greville Williams, have
hereunto set my hand and seal, this Fourth day of November, in the
year of our Lord One thousand eight hundred and sixty-three.