IMPROVE- MENTS IN THE PRODUCTION AND MANUFACTURE OF BLUE COLORS
Year: 1863

page_text: LETTERS PATENT to Astley Paston Price, of 47, Lincoln's Inn Fields, in
the County of Middlesex, Gentleman, for the Invention of "IMPROVE-
MENTS IN THE PRODUCTION AND MANUFACTURE OF BLUE COLORS."-A com-
munication from abroad by Augustus Eisenlobr, of Heidelberg, in the
Grand Duchy of Baden, Doctor of Philosophy.
Sealed the 21st August 1868, and dated the 26th February 1863.
PROVISIONAL SPECIFICATION left by the said Astley Paston Price at
the Office of the Commissioners of Patents, with his Petition, on the
26th February 1863.
I, ASTLEY PASTON PRICE, of 47, Lincoln's Inn Fields, in the County of
Middlesex, Gentleman, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE PRODUCTION AND MANUFACTURE OF BLUE COLORS," a com-
munication from abroad by Augustus Eisenlohr, of Heidelberg, in the Grand
Duchy of Baden, Doctor of Philosophy, to be as follows:-
These improvements in the production and manufacture of blue colors
consist in the employment of acetates, citrates, succinates, racemates, valeri-
nates, carbolates, benzoates, cinnamates, tartrates, and oxalates of potash,
soda, and ammonia, in conjunction with aniline and roseine or roseaniline. In
carrying out my Invention I proceed as follows:-I mix any of the salts
before-mentioned, but by preference I employ the benzoates or acetates of soda
or ammonia, or mixtures of the same, with aniline and with roseine, and after

page_text: the mixture has been well incorporated, I heat the same, contained in a
suitable vessel, to a temperature of from about 160° to 215° centigrade, such
temperature being maintained until the desired blue color is produced, which
is generally effected in about from two to three hours. The fused mass
resulting from this operation is then treated with sulphuric or with muriatic
acid to remove the excess of aniline and other impurities. The coloring
matter thus obtained may be dissolved in alcohol or in any other suitable
solvent, and is applicable for dyeing or printing purposes.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Astley Paston Price in the Great Seal Patent Office on
the 26th August 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ASTLEY
PASTON PRICE, of 47, Lincoln's Inn Fields, in the County of Middlesex,
Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of February, in the year of our
Lord One thousand eight hundred and sixty-three, in the twenty-sixth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Astley Paston Price, Her special license that I, the said Astley
Paston Price, my executors, administrators, and assigns, or such others as I,
the said Astley Paston Price, my executors, administrators, or 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 "IMPROVE-
MENTS IN THE PRODUCTION AND MANUFACTURE OF BLUE COLORS," a communication
to me from abroad by Augustus Eisenlohr, of Heidelburg, in the Grand
Duchy of Baden, Doctor of Philosophy, upon the condition (amongst others)
that I, the said Astley Paston Price, my executors or administrators, by an
instrument in writing under my hand and seal, or under the hand and seal of
one of them, 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 months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Astley Paston Price, do hereby declare
the nature of the said Invention, and in what manner the same is to be per-

page_text: formed, to be particularly described and ascertained in and by the following
statement, that is to say:-
These improvements in the production and manufacture of blue colors
consist in the employment of acetates, citrates, succinates, racemates, malates,
valerinates, carbolates, benzoates, cinnamates, tartrates, and oxalates of potash,
soda, and ammonia, in conjunction with aniline and roseine or roseaniline. In
carrying out my Invention I proceed as follows:-I mix any of the salts
before-mentioned, but by preference I employ the benzoates or acetates of
soda or ammonia, or mixtures of the same, with aniline and with roseine. The
proportions which I prefer are one part of the benzoates or acetates to three
parts of roseaniline, and nine parts of aniline. After the mixture has been
well incorporated I heat the same contained in a suitable vessel to a tem-
peraturo of about from 160° to 215° Centigrade, such temperature being
maintained until the desired blue color is produced, which is generally effected
in about from two to three hours. The fused mass resulting from this opera-
tion is then treated with sulphuric or with muriatic acid to remove the excess
of aniline and other impurities. The coloring matter thus obtained may be
dissolved in alcohol or in any other suitable solvent, and is applicable for
dyeing or printing purposes.
In witness whereof, I, the said Astley Paston Price, have hereunto set
my hand and seal, the Twenty-sixth day of August One thousand
eight hundred and sixty-three.
ASTLEY P. PRICE. (L.S.)