AN IMPROVED MORDANT TO BE USED IN DYEING BLUES
Year: 1882

page_text: "
PROVISIONAL SPECIFICATION left by the said Samuel Musgrave at the
Office of the Commissioners of Patents on the 22nd April 1882.
SAMUEL MUSGRAVE of Leeds in the County of York "AN IMPROVED
MORDANT TO BE USED IN DYEING BLUES"
נן
.
A mordant is a composition used in preparing fabrics for receiving dyes and
my improvements especially relate to a mordant for preparing fabrics previous to
being dyed blue. The ingredients and about the proportions of the same are as
follows. Oxalic acid 3 lbs; alum 12 lbs; Bi-chromate of Potash 4 lbs; and White
Argol 3 lbs. The proportions of such ingredients are varied to suit the shade or
depth of colour the material is required to receive. The above ingredients are
ground into a powder and mixed together, and when required for use the mixture
is dissolved in boiling water and afterwards allowed to become perfectly cold.
When in this state it is placed in a pan and the fabric immersed in it. The whole
is now gradually heated up to a boil, and maintained at boiling point a sufficient
length of time for the mordant to have its effect such time varying in accordance
with the length or nature or quality of the material. After this operation the
fabric is taken out washed, and then submitted to the action of the dye.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Samuel Musgrave in the Great Seal Patent Office on the
20th October 1882.
SAMUEL MUSGRAVE of Leeds in the County of York "AN IMPROVED MORDANT
TO BE USED IN DYEING BLUES
"
A mordant is a composition used in preparing fabrics for receiving dyes and my
improvements especially relate to a mordant for preparing fabrics previous to
being dyed blue. The ingredients and about the proportions of the same are as
follows. Oxalic Acid 3 lbs, Alum 12 lbs, Bichromate of Potash + lbs, and White
Argol 3 lbs. This may be formed into two parts which we respectively stylo
Nos 1 and 2 compositions and may be made up in the following proportions.
No 1 composition consisting of twelve parts of Aluin and four parts of Bichromate
of Potash. No 2. composition consisting of three parts of Oxalic Acid-and-three-
parts of White Argol.
The proportions of such ingredients are varied to suit the shade or depth of
colour the material is required to receive
The above ingredients are ground into a powder and mixed together, and when
required for use-the-mixture-is-dissolved in boiling water, and afterwards allowed
to become perfectly cold. When in this state it is placed in a pan and the fabric
immersed in it. The whole is now gradually heated up to a boil, and maintained
at boiling point for about two hours, or a sufficient length of time for the mordant
to have its effect such time varying in accordance with-the-length, -or-nature-or-
quality of the material. After this operation the fabric is taken out, washed, and
then submitted to the action of the dye.
Having now described my said Invention and how the same is to be employed
in practice I would have it understood that I do not limit myself to the precise
proportions above mentioned as the same way be varied or modified to suit the
nature of the material to be operated upon and the shade or depth of of colour the
material is required to receive; what I do claim is a mordant to be used in
preparing fabrics previous to being dyed blue such mordant being composed of the
ingredients herein set forth.
In Witness whereof I the said Samuel Musgrave have hereunto set my
hand and Seal this Seventeenth day of October in the year of our Lord
one thousand eight hundred and eighty two.