Improvements in the means
Year: 1887

page_text: Date of Application, 11th Nov., 1887
Complete Left, 12th Dec., 1887
Complete Accepted, 13th Jan., 1888
'I, JACQUES GRUNHUT, of South Shields, in the County of Durham, Manufacturing
Chemist, do hereby declare the nature of the said Invention, to be as follows:-
This Invention relates to Improvements in the means of dyeing cotton, jute and
other vegetable fibres or fibrous substances in the raw spun or manufactured state as
warps yarn or piece goods, in aniline blacks, and consists essentially in mordanting
the goods and subsequently dyeing them with solutions of the substances hereinafter
respectively mentioned.
In carrying the Invention into effect, according to one modification, I mordant the
goods by boiling the same for a sufficient time generally about half an hour in a
solution of Azo Blue, and after washing the goods, dye them as thus treated in a bath.
containing for each 10 lbs. of the goods; about 200 gallons of water, about 6 lbs. of
aniline oil, about 12 lbs. of hydrochloric acid, and about 8 lbs. of Bichromate of
Potash, working the goods about in such bath while cold for a sufficient time
generally about 1 hour, and gradually raising the temperature until it reaches about
70 degrees centigrade. The goods are then soaped, washed, and dried.
'
. Or, according to another modification, I mordant the goods by boiling the same in
a solution of any of the following substances, to wit, Congo Red, Benzo Purpurine,
Benzo Azuline, Blue Azurine, Chrysamine, Delta Purpurine, Congo Corinth or
Paraphenylen Blue, or in a solution of equal parts of Congo Red and Blue Azurine,
or of Benzo Purpurine and Blue Azurine, or of any of such other substances with.
Blue Azurine, and after washing the goods, dye them as thus treated in a bath
containing for each 100 lbs. of the goods, about 200 gallons of water, about 8 lbs. of
Aniline salt, about 12 lbs. of hydrochloric acid, and about 12 lbs. of Bichromate of
Potash, working the goods about in such bath while cold for say about half an hour.
and gradually raising the temperature of the bath as aforesaid. The goods are then
soaped, washed and dried.
I do not confine myself to the use of such relative proportions of the respective
ingredients or mordanting and dyeing materials as the same may be to some extent
varied, and the dyeing may be effected in either a cold or warm bath.
Dated this 11th day of November 1887,
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C.,
Agents for the Applicant.

page_text: I, JACQUES GRUNHUT, of South Shields, in the County of Durham, Manufacturing
Chemist, 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 :-
AN
This Invention relates to an improved process and means of dyeing cotton, jute and
other vegetable fibres or fibrous substances, in the raw, spun or woven state (all such
materials being hereinafter intended to be comprehended where the words "the said
materials alone occur,) in aniline black; and consists, essentially, in the successive
steps of mordanting the said materials with solutions of colouring matters belonging
to the Azo group as hereinafter described, and subsequently dyeing the said materials
with oxidising solutions of aniline salts or aniline products as also hereinafter
described.
In carrying out my Invention, I place the said materials in a suitable vessel
containing for each 100 lbs. of the said materials, about 500 gallons of water; and
about one half a pound of Congo Red, or of Benzo Purpurine, or of Blue Azurine, or
of Chrysamine, or of Paraphenylen Blue, or of Delta Purpurine, or of Hessian Red,
or of Benzo Azurine, or of Azo Blue, or of Congo Corinth, or of Hessian Violet, or of
Hessian Purple; or I place the said materials into a suitable vessel containing a like
aqueous solution of about one half a pound each of Congo Red and of Blue Azurine,
and with about 10 lbs. of Soda Crystals, or with about 5 lbs. of Carbonate of Soda,
or with about 10 lbs. of Carbonate of Potash; or I place the said materials into a
suitable vessel containing a like aqueous solution of a mixture of any of the above
colouring matters; and in each or any of such cases I boil the said materials in the
solution used for about half an hour or sufficiently long for the said materials to be
sufficiently mordanted or impregnated with the said colouring matters.
After the said materials have been thus treated, they are washed and are sub-
sequently oxidized and dyed in aniline black by being placed in a suitable vessel
containing for each 100 lbs. of the said materials, about 200 gallons of water, and for
each 200 gallons of water;-about 8 lbs. of aniline oil, about 32 lbs. of Hydrochloric
Acid, and about 10 lbs. of Bichromate of Potash ;-or about 4 lbs. of Aniline oil,
about 4 lbs. of aniline salt, about 24 lbs. of Hydrochloric acid, and about 12 lbs. of
Bichromate of Potash ;-or about 12 lbs. of aniline oil, about 20 lbs. of Hydrochloric
acid, about 20 lbs of Sulphuric acid, and about 16 lbs. of Bichromate of Potash; the
said materials being placed in any of the said oxidising and dyeing solutions when
cold, and being suitably stirred about or agitated therein for about one hour or
sufficiently long to be thoroughly oxidised and dyed or impregnated with such saline
solutions, after which the solution used is gradually heated up to about 70 degrees
centigrade, subsequently to which the said materials are removed from the said
solution, and are washed, soaped, and dried.
I can also use as the base of the said oxidising and dyeing solutions any of the
5

page_text: following products of Aniline, to wit:-Alpha or Beta Naphthylamine, Rosaniline,
Xylidine and Toluidine.
I desire to state that the dyeing operation may be effected in a cold or warm bath,
and that I do not confine myself to the precise details as to time or quantities of the
said respective mordanting and coloring or oxidising and dyeing ingredients herein-
before mentioned, as the same may be varied to some extent without in any way
departing from the essential features of the said Invention.
Having now particularly described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The process and means of dyeing cotton, jute and other vegetable fibres or fibrous
substances, in the raw, spun or woven state, in aniline black, consisting in the
successive steps of mordanting the said materials with solutions of coloring matters
belonging to the Azo group, and in subsequently dyeing the said materials with
oxidising solutions of aniline salts or of aniline products, substantially as hereinbefore
described.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C.,
Agents for the Applicant.