IMPROVEMENTS IN PRODUCING PINK SHADES ON COTTON FABRICS OR YARNS
Year: 1859

page_text: LETTERS PATENT to Henry Sagar, of Broughton, near the City of
Manchester, in the County of Lancaster, Bleacher and Dyer, and
Alexander Schultz, of Paris, in the Kingdom of France, and of the City
of Manchester, aforesaid, Chemist, for the Invention of "IMPROVEMENTS
IN PRODUCING PINK SHADES ON COTTON FABRICS OR YARNS."
Sealed the 28th June 1859, and dated the 20th January 1859.
PROVISIONAL SPECIFICATION left by the said Henry Sagar and
Alexander Schultz at the Office of the Commissioners of Patents, with
their Petition, on the 20th January 1859.
We, HENRY SAGAR, of Broughton, near the City of Manchester, in the
County of Lancaster, Bleacher and Dyer, and ALEXANDER SCHULTZ, of Paris, in
the Kingdom of France, and of the City of Manchester aforesaid; Chemist,
do hereby declare the nature of the Invention for "IMPROVEMENTS IN PRODUCING
PINK SHADES ON COTTON FABRICS OR YARNS," to be as follows:-
We first pad the cotton pieces or yarns (previously bleached) in a solution
made by dissolving murexide in a solution of nitrate of lead, to which we add
a solution of bichloride of mercury; we usually employ the following propor-
tions to which, however, we do not confine ourselves, as they must vary
according to the tints and intensity of shade required :-
We dissolve in eight gallons of boiling water six pounds of nitrate of lead,

page_text: to which, when cold, we add a solution of six ounces of bichloride of mercury,
or any other soluble salt of mercury in two gallons of water.
Having padded the pieces or yarns in the above preparation, we dry them
and we fix the coloring matter by again padding the fabrics in a solution of
wheaten starch or any other suitable similar substance, such as flour, farina,
gums, or gum substitutes, and, if necessary, we vary the shades by adding to the
fixing solution any substance, coloring matter, acids or acid salts, acetate of
soda, alkalies, alkaline salts, or any other suitable agent, in such proportions
as may be necessary to produce the shade required.
We would remark that we do not claim generally as of our Invention the
use of compounds of murexide with metallic salts in dyeing, the novelty
consists in using the said compounds with a process of fixing the coloring
matter of murexide with starch or other suitable similar matter in the manner
stated above.
The Invention also consists in the use of murexide or other product derived
from uric acid as a substitute for safflower.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Sager and Alexander Schultz in the Great Seal
Patent Office on the 20th July 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, HENRY
SAGAR, of Broughton, near the City of Manchester, in the County of
Lancaster, Bleacher and Dyer, and ALEXANDER SCHULTZ, of Paris, in the
Kingdom of France, and of the City of Manchester, aforesaid, Chemist, send
.greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of January, in the year of our
Lord One thousand eight hundred and fifty-nine, in the twenty-second
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto us, the said Henry Sagar and Alexander Schultz, Her special
licence that we, the said Henry Sagar and Alexander Schultz, our executors,
administrators, and assigns, or such others as we, the said Henry Sagar
and Alexander Schultz, our 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 "IM-

page_text: PROVEMENTS IN PRODUCING PINK SHADES ON COTTON FABRICS OR YARNS," upon the
condition (amongst others) that we, the said Henry Sagar and Alexander
Schultz, our executors or administrators, by an instrument in writing under
our or their hands and seals, or under the hand and seal of one of us, or 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 Henry Sagar, on behalf of myself &
the said Alexander Schultz, 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:-
We first pad the cotton pieces, or yarns (previously bleached) in a solution
made by dissolving murexide in a solution of nitrate of lead, to which we add
a solution of bichloride of mercury. We usually employ the following pro-
portions, to which, however, we do not confine ourselves, as they must vary
according to the tints and intensity of shade required:—
We
We dissolve in eight gallons of boiling water 6 lbs. of nitrate of lead, to
which, when cold, we add a solution of six ounces of bichloride of mercury or
any other soluble salt of mercury in two gallons of water. If a light shade of
pink be required, we dilute the above mixture with water, or if a dark pink
be required, we make the mixture with a smaller proportion of water.
then pad the pieces or yarns in this preparation, and by preference dry them,
but this is not absolutely necessary. The pieces or yarns when treated in this
manuer become dyed of a brownish red tint, and the object of our Invention' is
to change this tint, which has heretofore been produced when dyeing with
murexide, into a piuk color; this we do by the use of alkalies, alkaline salts,
acids, acid salts, and acetate of soda mixed with wheaten starch, flour, farina,
gums, gum substitutes, or other thickening material for stiffening fabrics
and yarns. The object of mixing a thickening material with the alkalies,
alkaline salts, acids, acid salts, and acetate of soda, that is to say, with
the matters which by acting chemically produce the change desired in the
color of the fabrics or yarns previously dyed as above-mentioned is, that were
no thickening material employed, the color when changed would rapidly
become altered or faded, more especially if the fabrics or yarns were passed
over heated rollers, or into a heated chamber to dry them; by the use of the
thickening material, this alteration or fading is prevented. The fabric or yarn
when dyed with murexide, as above mentioned, is passed through the
thickening material in the manner usually practised in dressing fabrics and

page_text: yarus. The thickening material is prepared as heretofore, and of a similar con-
sistency, and when thus prepared there is added to it one or other of the sub-
stances above mentioned. If it be desired to produce a color resembling that
obtained by dyeing with safflower, we prefer to add to cach gallon of the
thickening material half a pound of soda, soda ash or pearlash; other alkalies.
or alkaline salts may, however, be employed, and the fabrics or yarns, are then
passed through the dressing machine, and the thickening material one or more
times till the desired change is fully obtained. If it be desired to produce a
brown pink, we use in a similar manner, acids, acid salts, and acetate of soda,
of which materials the last produces the most satisfactory results, and we
employ, by preference, in the proportion of four ounces to cach gallon of
thickening material.
In witness whereof, I, the said Henry Sagar, have hereunto set my
hand and seal, this Twentieth' day of July, in the year of our Lord One
thousand eight hundred and fifty-nine.
HENRY SAGAR. (.s.)