Improvements in Bleaching Certain Vegetable Fibres, more especially those of the Urtica Family.
Year: 1896

page_text: Date of Application, 21st May, 1896
Complete Specification Left, 18th Feb., 1897-Accepted, 17th Apr., 1897
PROVISIONAL SPECIFICATION.
Improvements in Bleaching Certain Vegetable Fibres, more
especially those of the Urtica Family.
1 ALFRED FRANCIS BILDERBECK GOMESS, of 33 Drayton Gardens, Fulham
Road, in the County of London, Chemist, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in bleaching certain vegetable fibres,
more especially those of the urtica family.
According to this invention, I soak the vegetable fibres in a solution of
hypochlorite of sodium, potassium, ammonium, lithium calcium or the like, for
from one to (say) ten minutes-the time varying according to the nature of the fibre
under treatment.
I then remove the fibre, and soak it for from one to five minutes (or longer if
necessary) in dilute nitric acid.
I may reverse the process, or add the acid to the hypochlorite solution, but I
prefer to proceed as above described.
The strength of the hypochlorite solution varies from 3° to 8° Baumé, according
to the condition of the fibre under treatment, and that of the nitric acid solution
from t° to 3° Twaddell.
After the above treatment, I well wash the fibre in water, in the usual manner.
Dated this 21st day of May 1896.
BROWNE & Co.,
Agents for the Applicant.
Improvements in Bleaching Certain Vegetable Fibres, more
especially those of the Urtica Family.
I ALFRED FRANCIS BILDERBECK GOMESS, of 33 Drayton Gardens, Fulham
Road, in the County of London, Chemist, do hereby declare the nature of this
invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
This invention relates to improvements in bleaching certain vegetable fibres,
more especially those of the urtica family.
According to this invention, I soak the vegetable fibres in a solution of
hypochlorite of sodium, potassium, ammonium, lithium, calcium or the like, for
a time varying according to the nature of the fibre under treatment-say from one
to ten minutes.
I then remove the fibre, and soak it for from one to five minutes (or longer if
necessary) in dilute nitric acid.
I may reverse the process, or add the acid to the hypochlorite solution; but I
prefer to proceed as above described.
017

page_text: The strength of the hypochlorite solution varies from 3° to 8° Baumé, according
to the condition of the fibre under treatment, and that of the nitric acid solution
from 0 to 3° Twaddell.
After the above treatment, I well wash the fibre in water, in the usual manner.
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 :-
1. The improvements in bleaching certain vegetable fibres, more especially those
of the urtica family, substantially as described.
2. In improvements in bleaching certain vegetable fibres, more especially those
of the urtica family, the use of a solution of hypochlorite of sodium, potassium,
ammonium, lithium, calcium, or the like, and a dilute solution of nitric acid.
Dated this Eighteenth day of February 1897
BROWNE & Co.,
9 Warwick Court, Gray's Inn, London, W.C.,
Agents for the Applicant.