A Process for Giving a Silk Like Appearance to Cotton.
Year: 1896

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883) as required by
the decision of the Chief Examiner of the 20th day of January 1898.
Date of Application, 16th Dec., 1896
Complete Specification Left, 10th June, 1897--Accepted, 24th July, 1897
PROVISIONAL SPECIFICATION.
A Process for Giving a Silk Like Appearance to Cotton.
I, OSWALD SEYFERT, of Glauchau, Saxony, in the Empire of Germany, Merchant,
do hereby declare the nature of this invention to be as follows:-
It is well known, that cotton undergoes by the effect of strong alkaline lyes
(mercerising) an essential contraction which can be prevented by keeping it stretched
during the mercerising as well as the washing in stretched state.
By working according to this process the contraction of the yarn is prevented.
It will further be observed, that the cotton receives a silk like brilliant appearance
from such treatment.
This effect, which originally was not intended when mercerising under tension, I
obtain by a special mercerising process for producing a cotton yarn or cotton spun
yarn with silk like appearance.
I have found, that the silk like effect is obtained much better and more simply by
a process, which consists in drying the cotton mercerised as usually in strongly
stretched state at a low temperature and in washing it as usually but without
tension.
This differs essentially from the above mentioned process, as there the roving on
spun yarn is poured over with soda lye in a stretched state and must then remain
stretched until the finishing of the washing.
The new process is thus considerably simpler, and it may be said, that the
practical production of the article is made possible only by this method or certainly
improved in a remarkable manner.
Also in the quality of the yarns produced after both methods, there is shown a
difference in favour of this new process. As the brilliant yarn produced after the
previous process, being harder and more glassy, is more difficult to work in the
weaving industry, than that produced by the new process.
The manner of working, which for yarns, tissues, and woven goods, is substantially
the same, is described hereinafter for cotton yarns.
The yarn is treated in a cold soda lye, 30 degrees (Baumé) strong until complete
impregnation, the yarn is then wrung out and hung on drying reels, which are so
arranged, that during the drying a strong stretching of the yarn can be given.
When dried, which is best done at 30-40° C., it is washed as usual."
Dated this 16th day of December 1896.
HERBERT HADDAN & Co.,
Agents to Applicant.

page_text: CUMPLEIE DE FUIFICATION
A Process for Giving a Silk Like Appearance to Cotton.
I, OSWALD SEYFERT, of Glauchau, Saxony in the Empire of Germany, Merchant
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:
It is well known that cotton undergoes by the effect of strong alkaline lyes
(mercerising) an essential contraction which can be prevented by keeping it
stretched during the mercerising as well as the washing in stretched state.
By working according to this process the contraction of the yarn is prevented. It
will further be observed that the cotton receives a silk like brilliant appearance from
such treatment.
This effect which originally was not intended when mercerising under tension, I
obtain by a special mercerising process for producing a cotton yarn or cotton spun
yarn with silk like appearance.
I have found that the silk like effect is obtained much better and more simply by
a process which consists in drying the cotton mercerised as usually in strongly
stretched state at a low temperature and in washing it as usually but without
tension.
This differs essentially from the above mentioned process as there the roving on
spun yarn is poured over with soda lye in a stretched state and must then remain
stretched until the finishing of the washing.
The new process is thus considerably simpler and it may be said that the practical
production of the article is made possible only by this method or certainly improved
in a remarkable manner.
Also in the quality of the yarns produced after both methods there is shown a
difference in favor of this new process. As the brilliant yarn produced after the
previous process, being harder and more glassy is more difficult to work in the
weaving industry than that produced by the new process.
The manner of working, which for yarns tissues and woven goods is substantially
the same, is described hereinafter for cotton yarns.
The yarn is treated in a cold soda lye 30 degrees (Baumé) strong until complete
impregnation, the yarn is then wrung out and hung on drying reels, which are so
arranged that during the drying a strong stretching of the yarn can be given.
When dried, which is best done at 30-40° C., it is washed as usual.
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
1. In the manufacture of cotton yarn and cotton wares for giving the cotton a
silk like appearance, the herein described process consisting in treating the cotton
with an alkaline lye (mercerising) and then drying it in stretched state at a low
temperature, without intermediate washing, substantially as described.
2. In the manufacture of cotton yarn and cotton wares for giving the cotton a
silk like appearance, the herein described process consisting in treating the cotton
with an alkaline lye (mercerising) then drying it in stretched state, at a low
temperature, and finally washing it without tension, substantially as described.
Dated this 10th day of June 1897.
HERBERT HADDAN & Co.,
Agents to Applicant.