An Improved "Kaki" Dye.
Year: 1895

page_text: Date of Application, 13th Apr., 1895
Complete Specification Left, 13th Jan., 1896-Accepted, 15th Feb., 1896
An Improved "Kaki" Dye.
I JOHN DUXBURY of the Firm of Lomnitz & Duxbury of Blackfriars Street,
Manchester, in the County of Lancaster, Merchant, do hereby declare the nature
of this invention (communicated to me from abroad by Edmund Alfred Mitchell
of the Madras City Police, in the City and Presidency of Madras, Empire of
India) to be as follows :-
My said invention relates to an improved kaki dye for dyeing cotton or woollen
goods. The dye is obtained by combining solutions of certain mineral and vegetable
matters in stated proportions. The minerai solutions are obtained from sulphates
of copper, zinc, or iron one or the other being used according to the shade of kaki
required.
The vegetable solution or infusion is obtained from myrabolans, divi-divi,
catechu or cutch and gambier, redwood, or tanning bark. These are all well known
and regularly imported products, already used largely in tanning and dyeing
operations.
In making a kaki dye of an average shade I would take say 2 lbs. of myrabolans
or divi-divi, with two ozs. of sulphate of zinc or copper. To these I add one,
two or more ozs. of tanning bark, catechu and redwood and from 10 to 30 grains of
sulphate of iron according to the required shade of dye. The foregoing ingredients
are mixed with 6 gallons of water, first brought to boiling point, the materials
being stirred and soaked for about two hours. Thereafter I add about six ounces
of bichromate of potash in six gallons of water which renders the dye fast.
Variations in the shades of kaki can be obtained by varying the quantities of
the ingredients. As a further example of kaki dye made upon my improved
principle I might instance the following, the quantity of dye obtained being sufficient
for treating say 40 yards of drill.
With one lb. of divi-divi I take 8 ozs. of tanning bark, 1 oz. sulphate of copper
and 3 ozs. catechu. These ingredients are treated with six gallons of water and the
additional fixing solution of bichromate of potash.
Dated the 11th day of April 1895.
E. K. DUTTON & Co.,
5 John Dalton Street, Manchester, Agents.
I JOHN DUXBURY of the Firm of Lomnitz & Duxbury, of Blackfriars Street,
Manchester, in the County of Lancaster, Merchaut, do hereby declare the nature
of this invention (communicated to me from abroad by Edmund Alfred Mitchell
of the Madras City Police, in the City and Presidency of Madras, Empire of
India) 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 said invention relates to an improved "kaki" dye for dyeing cotton or
woollen goods. The dye is obtained by combining solutions of certain mineral and
1 Pain Q1

page_text: vegetable matters in stated proportions. The mineral solutions are obtained from
sulphates of copper, zinc, or iron, one or the other being used according to the shade
of "kaki" required.
The vegetable solution or infusion is obtained from myrabolans, divi-divi, gall
nuts, catechu or cutch and gambier, redwood, or tanning bark. These are all well
known and regularly imported products, already used largely in tanning and dyeing
operations.
In making a kaki dye of an average shade I would take say 2 lbs. of myrabolans
or divi-divi, with two ozs. of sulphate of zinc or copper. To these I add one, two
or more ozs. of tanning bark, catechu and redwood and from 10 to 30 or more
grains of sulphate of iron according to the required shade of dye. The foregoing
ingredients are mixed with 6 gallons of water, first brought to boiling point, the
materials being stirred and soaked for about two hours. Thereafter I add about
six ounces of bichromate of potash in six gallons of boiling water which renders the
dye fast.
Variations in the shade of dye can be obtained by varying the proportions of the
ingredients. The metallic sulphates being the chief agents in producing the required
shade of dye it will be evident that by varying the proportions of these sulphates
or by using only those sulphates which give a lighter or darker shade, the dye
may be varied. For example 1 might use a copper sulphate alone for the lighter
shades and iron sulphates for the darker shades.
Having now particularly described and ascertained the nature of my said
invention and what manner the same is to be performed I declare that what I
claim is.
1. The improved "kaki" dye substantially as hereinbefore described.
2. The improved "kaki" dye obtained by combining the hereinbefore referred
to mineral and vegetable ingredients in the manner and substantially as hereinbefore
set forth.
CC TOTLU.
Dated the 11th day of January 1896.
For the Applicant,
E. K. DUTTON & Co.,
5 John Dalton Street, Manchester, Chartered Patent Agents.