A CERTAIN COLOURING COMPOSITION FOR DYEING TISSUES OR STUFFS OF SILK AND COTTON
Year: 1853

page_text: LETTERS PATENT to Louis Jules Joseph Malegue, Dyer, of Paris,
in the French Empire, for the Invention of "A CERTAIN COLOURING
COMPOSITION FOR DYEING TISSUES OR STUFFS OF SILK AND COTTON."
PROVISIONAL SPECIFICATION left by the said Louis Jules Joseph
Malegue at the Office of the Commissioners of Patents, with his
Petition, on the 22nd January 1853.
I, LOUIS JULES JOSEPH MALEGUE, do hereby declare the nature of
the said Invention for "A CERTAIN COLOURING COMPOSITION FOR DYEING
TISSUES OR STUFFS OF SILK AND COTTON " to be as follows:-
A composition for dyeing silk and cotton of a rose or purple colour is
prepared from the following colouring materials -No. 1, carmine of
safranum, or the red colouring matter remaining after washing cartha-
mum or Egyptian bastard saffron with water, and treating the residue
or precipitate with carbonate of soda and citric acid. No. 2, ammoniacal
cochineal or cochineal which has been digested or boiled in solution of
ammonia. No. 3, cochineal in its natural or raw state. A mixture is
made of ammoniacal cochineal, tartar, solution of sulphurous acid, solu-
tion of tin in muriatic acid, and nitric acid, carmine of safranum, and
tartaric acid. Raw cochineal may be substituted for a portion of the
ammoniacal cochineal. The proportions of the different substances are
varied according to the tint required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Louis Jules Joseph Maleguc in the Great Sea
Patent Office on the 7th June 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I
LOUIS JULES JOSEPH MALEGUE, Dyer, of Paris, in the French Empire
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-second day of January, in the
year of our Lord One thousand eight hundred and fifty-three, in the six-
teenth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Louis Jules Joseph Malegue, Her special
licence that I, the said Louis Jules Joseph Malegue, my executors,
administrators, and assigns, or such others as I, the said Louis Jules
..Joseph Malegue, 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 In-
vention for "A CERTAIN COLOURING COMPOSITION FOR DYEING TISSUES OR
STUFFS OF SILK AND COTTON," upon the condition (amongst others) that 1,
the said Louis Jules Joseph Malogue, by an instrument in writing under
my hand and seal, 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 Louis Jules Joseph Malegue,
do hereby declare the nature of my Juvention, 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:
My Invention consists of a certain colouring composition for dyeing
tissues or stuff's of silk and cotton of a rose or purple colour, as herein-
after described. This composition is adapted for being used in lieu of
the carmine of safranum, which is prepared from carthamus, or the bas-
tard saffron of lower Egypt; by steeping it several times in succession in

page_text: distilled or nearly pure water, by which means the yellow colouring
matter is dissolved and removed, while the red colouring matter remains.
This red colouring matter is treated with a solution of sub-carbonate of
soda, and when the colouring matter has subsided to the bottom it is
pressed, and then dissolved in a. solution of citric acid. I prepare a
solution of tin by dissolving nine parts by weight of pure tin in a
mixture of five parts of aqua fortis, or. nitric acid, and eighteen
parts of spirits of salt, or muriatic acid, all by weight. This so-
lutionis berein-after mentioned by the name solution of tin. I also
employ salt of tin, which may be prepared by dissolving purc tin
filings or grains in muriatic acid, to which has been added one fifth
part of its weight of nitric acid, aud then evaporating the solution
in a water bath until the salt of tin is obtained in a solid state. This
preparation is herein-after mentioned under the name of salt of tin.
I also employ in my colouring composition ammoniacal cochineal,
which is prepared by boiling finely ground cochineal in twice its weight
of solution of ammonia for several hours. The mixture should be well
stirred, and when it becomes thick it is placed upon a cloth, which is
stretched upon a piece of wicker work, and placed in a stove to dry.
The dried mass is then cut or broken into pieces. This preparation is
herein-after mentioned under the name of ammoniacal cochineal.
I will now proceed to describe the mode of preparing my colouring
composition for dyeing rose colour. I dissolve four ounces of ammonia-
cal cochineal in a quart of hot water, and I boil the solution for ten
minutes. I then add eighty-eight grains of salt of tin, one hundred and
forty grains of crystals of tartar or bitartrate of potash, one ounce of
saturated aqueous solution of sulphurous acid, and one hundred and
forty grains of the solution of tin above described. The whole is boiled
for about balf an hour, and then allowed to cool in a glass or earthen-
ware vessel, and afterwards decanted into another vessel. Two ounces
of the carmine of safranum are then added, and well mixed with the so-
lution. This completes the colouring composition of dye for dyeing rose
colour. A small quantity of this composition is mixed with a quantity
of hot water, and tartaric acid is added in the proportion of about one
ounce to eight or ten gallons of water. A sufficient quantity of the

page_text: composition or dye is then added to produce the required tint on the
tissues or other articles immersed in it.
In applying the composition for dyeing purple I proceed as herein-
before described for dyeing rose colour, with the exception that I employ
three hundred and fifty grains of the solution of tin in lieu of one hun-
dred and forty grains, and I employ one ounce and a quarter of carmine
of safranum, in lieu of two ounces. After having dyed a piece of cloth
of six or seven yards, it is advantageous to add about half an ounce of
carmine of safranum.
The four ounces of ammoniacal cochineal in the above-described com-
position may be replaced by three ounces of ammoniacal cochineal and
three ounces of raw. cochineal. These two substances are boiled
together in the water for two or three hours, so as to evaporate about
one third part of the water. The other ingredients are then added as
before.
Having thus described the nature of my Invention, and in what
manner the same is to be performed, I wish it to be understood that I
do not claim the manufacture or application to the purposes of dyeing
of the carmine of safranum, or any other of the separate materials or
ingredients herein-before mentioned. But I claim as my Invention the
colouring composition prepared and made in manner herein-before
described.
In witness whereof, I, the said Louis Jules Joseph Malegue, have
hereunto set my hand and seal, this Thirtieth day of May, in the
year of our Lord One thousand eight hundred and fifty-three.
L. J. J. MALEGUE. (L.S.)
Witness,
CHARLES ARMENGAUI),
Ing" Civil,
Rue des Filles du Calvaire, 6, à Paris.