New or Improved Process for the Production of a Material suitable for Floor Coverings and other Industrial Purposes.
Year: 1897

page_text: Date of Application, 3rd Feb., 1897-Accepted, 17th Apr., 1897
COMPLETE SPECIFICATION.
New or Improved Process for the Production of a Material suitable
for Floor Coverings and other Industrial Purposes.
I, HUGO KARLE, Head Teacher, of Seckenheim, near Mannheim, in the Germau
Empire, 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 consists of a new or improved process for the production of a
material, which is preferably intended for floor coverings, but is also suitable for
other industrial purposes.
The process is essentially as follows. Fibrous material is felted together in a
suitable manner, then impregnated with a binding medium and made impervious to
water, in such a way that the material so formed by suitable treatment may be
made pliable and at the same time tough, becoming also smooth and enhanced
in value.
In carrying out this invention, cellulose, which must be free from acid, is
worked up with an equal bulk (or thereabouts) of linen or cotton fibre, or both
combined, into a thin pulp. This pulp, freed from any knots which may have been
present is poured upon a metallic sieve, and a fleece, formed of raw cotton, cotton
wool or other equivalent material is spread thereon, and upon the latter another layer
of the pulp is spread.
The slab so treated is consolidated by pressure between rollers and dried by
warming. The material, loosened by the warmth, having been rolled upon a drum
between prepared steel wire webbing, is saturated with (or has applied to it) a jelly
made preferably of hair and calcium sulpho-hydrate (CaH,S2), then the surplus
binding medium is removed by centrifugal action or like means and is dried and
again pressed between rollers. As soon as the drying is completed, the material is
fulled or milled with the addition of soap powder by fulling or milling machinery,
and according to its thickness, is lathered over with alkaline lye, or may be laid in a
tepid bath of gradually strengthened alkaline lye or other suitable liquid, then dried
and lastly after treatment in a bath of casein and borax or glycerine and oxide of
lead, is passed between calendering rollers.
The fleece being imprisoned between two layers formed from the fibrous pulp,
which of themselves offer little resistance to tearing, renders the whole mass pliable
Suitable raw
and firm. The fleece is prepared preferably, in the following, manner.
material (such as raw cotton, cotton, cotton wool, jute, hemp, manilla, aloe,
sisal, etc.,) is, if found necessary, freed from grease, partially felted by any known
process and worked into a fleece, which is then soaked in thin solution of gum
and dried with warmth under pressure. This manner of preparation possesses the
advantage that the material in its half finished state is adapted for various industrial
purposes.
The cellulose can be re-inforced with woody material and the linen or cotton fibre
with esparto grass, if desired.
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
Asan vari
and

page_text: other industrial purposes, in which a partially felted fleece of cotton, jute or the
like is felted with a pulp of fibrous material such as cellulose, linen, cotton or the like
poured hoth over and underneath the same, substantially as described.
2. The process for the production of a material suitable for floor coverings and
other industrial purposes, in which the material produced as in Claim 1, is
impregnated with a binding medium (such as a jelly made of hair and calcium
sulpho-hydrate), dried, and fulled with soap powder, treated with alkaline lye and
with a bath of casein and borax or of glycerine and oxide of lead and finally passed
between calendering rollers, substantially as described.
STANLEY, POPPLEWELL & Co.,
Chartered Patent Agents,
7 & 8, Southampton Buildings, Chancery Lane, London, Associate Agents.