Improvements relating to Felt, and Process for its Production.
Year: 1897

page_text: Date of Application, 26th July, 1897-Accepted, 11th Sept.,
1897
COMPLETE SPECIFICATION.
Improvements relating to Felt, and Process for its Production.
I, GUSTAV KREUTER, Manufacturer, of 13-14, Luckenwalde, The Hague, Holland,
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:-
My invention relates to felt, and process for its production.
Owing to the difficulty of felting silk with wool fibre, a felt constituted of silk
fibres has not hitherto been used in the production of hats, wardrobe or other
articles in the manufacture of which felt is usually employed.
My invention consists in a felt of wool and silk fibre, the silk fibre being
obtained from silk rags or patches of every description, which are treated in the
same manner as in the manufacture of artificial wool by which a kind of artificial
silk is obtained, the rags or patches being suitably sorted, washed and carbonised,
and afterwards disintegrated in the opening machine, and carded, being subse-
quently treated with alum and manganese ore. The addition of alum prevents a
too strong heating of the artificial silk, whilst the addition of manganese ore serves
to heighten and preserve the colour. The artificial silk is then treated with oil
and soap for the purpose of cleansing and opening the fibres. The material thus
obtained is mixed with natural wool or artificial wool fibre in the mixing machine,
in which 30 or 40 per cent. of the silk fibre is employed. The mixed material is
then prepared and made into felt in the usual manner.
Special care is required to be taken on dyeing as to the proportion of silk fibre
used. The dyeing is effected by suitable steeping and dying preparations in
accordance with the usual practice.
A felt made of this composition and in this manner offers very great advantages,
as it is considerably softer and more delicate, possesses a finer felt or grip, and
receives a gloss which far surpasses in appearance and durability that produced by
pressing, while the hat or other article does not need so high pressure in finishing,
and can be easily produced out of less material than is usually employed. Further,
the shape and appearance is unaffected by rain.
It is obvious that I may effect the mixture of the fibres in any stage of their
production, and accordingly I do not limit myself in this respect to the actual
process hereinbefore described.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:-
1. Felt for hats and other articles consisting of from 30 to 40 parts per cent. of
artificial silk and a corresponding quantity of natural or artificial wool, substantially
as hereinbefore described.
2. The process for the production of felt consisting in the sorting, disintegration,
washing and carbonisation of silk rags or patches, subsequent treatment with alum

page_text: and manganese ore, and afterwards with oil and soap, the fibres so produced and
treated being mixed in the willowing machine or otherwise with natural or
artificial wool, substantially as described..
تيمم
MARKS & CLERK,
18, Southampton Buildings, London, W.C., &
13, Temple Street, Birmingham, Agents for the Applicant.