Year: 1898

page_text: I, CHARLES DENTON ABEL, of Birkbeck Bank Chambers, Southampton Buildings,
Chancery Lane, in the County of London, Consulting Engineer and Chartered
Patent Agent, do hereby declare the nature of this invention (as communicated
to me from abroad by the Actien-Gesellschaft für Anilin-Fabrikation of Berlin
in the German, Empire, Chemical Manufacturers) to be as follows:
―
Dyeing with substantive colouring matters has hitherto generally been executed
by working the yarns or fabrics in the jigger in the hot dyestuff solution to
which certain salts such as sodium carbonate, borate or phosphate are added.
A new process of dyeing has now been discovered which offers remarkable
advantages. This process consists in impregnating the yarns or fabrics at
ordinary temperature with a dyestuff solution made alkaline by means of caustic
alkali and in allowing them to lie for some time at ordinary temperature.
In this way the dyestuff is completely fixed on the fibre and it is only neces-
sary to remove the excess of alkali by washing before drying.
The advantages of this process are evident.
As the dyeing process is completely executed at ordinary temperature the cost
of steam is dispensed with. The impregnation of the fibre is effected in a very
short time and may be executed by mechanical means and in a continuous way
Thus the dyeing process requires much shorter time than hitherto.
Further, there is no dyestuff lost as it is completely fixed on the fibre
by the new process, while in the processes hitherto known there is always a loss
of dyestuff, the bath never being completely exhausted.
Moreover, spots caused by incompletely removed grease are better covered by
the new process. Finally, a treatment with copper salts may be combined with
the dyeing process by adding to the bath an alkaline copper solution.
The new process may be carried out as follows.
The bath is prepared with 10 grammes of the Chicago blue 6B and 100 grammes,
caustic soda lye at 22° Bé in every litre.
The pieces are padded with this solution, then rolled up and allowed to lie for
about one hour. Finally the fabrics are well washed and dried.
For dyeing yarns they are impregnated with the dyestuff solution, then treated
in a hydro-extracter, allowed to lie for about 1 hour and finally washed and dried.
The process may be applied in the same way to other substantive colouring
matters and to their mixtures. The maximum intensity of the shades thus pro-
duced depends upon the solubility of the dyestuffs in alkaline water.
Naturally, all processes applicable to colouring matters dyed in the usual way

page_text: may also be applied in dyeing by the new process for instance diazotisation and
development on the fibre, treatment with paranitrodiazobenzene &c.
1000
ABEL & IMRAY,
Agents for the Applicant,
GUMI LEIE SI TAITTUATION.
New Process of Dyeing.
1, CHARLES DENTON ABEL, of Birkbeck Bank Chambers, Southampton Buildings,
Chancery Lane, in the County of London, Consulting Engineer and Chartered
Patent Agent, do hereby declare the nature of this invention (as communicated
to me from abroad by the Actien-Gesellschaft für Anilin-Fabrikation of Berlin
in the German Empire, Chemical Manufacturers) and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:-
Dyeing with substantive colouring matters has hitherto generally been executed
by working the yarns or fabrics in the jigger in the hot dyestuff solution to
which certain salts such as sodium carbonate, borate or phosphate are added.
A new process of dyeing has now been discovered which offers remarkable
advantages. This process consists in impregnating the yarns or fabrics at
ordinary temperature with a dyestuff solution made alkaline by means of caustic
alkali and in allowing them to lie for some time at ordinary temperature.
In this way the dyestuff is completely fixed on the fibre and it is only neces-
sary to remove the excess of alkali by washing before drying.
The advantages of this process are evident.
As the dyeing process is completely executed at ordinary temperature the cost
of steam is dispensed with. The impregnation of the fibre is effected in a very
short time and may be executed by mechanical means and in a continuous way.
Thus the dyeing process requires much shorter time than hitherto.
Further, there is no dyestuff lost as it is completely fixed on the fibre
by the new process, while in the processes hitherto known there is always a loss
of dyestuff, the bath never being completely exhausted.
Moreover, spots caused by incompletely removed grease are better covered by
the new process. Finally, a treatment with copper salts may be combined with
the dyeing process by adding to the bath an alkaline copper solution.
The new process may be carried out as follows.
The bath is prepared with 10 grammes of the Chicago blue 6 B and 100 grammes
caustic soda ve at 22° Bé in every litre.
The pieces are padded with this solution, then rolled up and allowed to lie for
about one hour. Finally the fabrics are well washed and dried.
For dyeing yarns they are impregnated with the dyestuff solution, then treated
in a hydro-extracter, allowed to lie for about 1 hour and finally washed and dried.
The process may be applied in the same way to other substantive colouring
matters and to their mixtures. The maximum intensity of the shades thus pro-
duced depends upon the solubility of the dyestuffs in alkaline water.
Naturally, all processes applicable to colouring matters dyed in the usual way
may also be applied in dyeing by the new process for instance diazotisation and
development on the fibre, treatment with paranitrodiazobenzene &c.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
The new process herein described for dyeing unmordanted cotton fabrics or
yarns by padding or impregnating them at ordinary temperature in a dyestuff-
solution made slightly alkaline by addition of caustic alkali, then rolling them
up or hydro-extracting them and allowing them to lie for some time at ordinary
temperature, and finally washing and drying them.
Dated this 15th day of February 1899.
ABEL & IMRAY,
Agents for the Applicant.