Improved Artificial Leather and Process for Manufacturing the same
Year: 1899

page_text: Date of Application, 25th Feb., 1899-Accepted, 29th Apr., 1899
COMPLETE SPECIFICATION.
Improved Artificial Leather and Process for Manufacturing the same
I, HARALD LYKKE BAGGER MÖRCII of 20, Östre Fasanvey, Frederiksberg, Den-
mark, Manufacturer, 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 an improved artificial leather and method of manu-
facturing the same.
If the substitutes for leather hitherto produced have not been very much used,
it is partly because it has not been possible to work them in the common way by
sewing and pegging. So it has in producing the artificial leather in question
been a main object to imitate the texture of natural leather as exactly as pos-
sible, so as to make the produce sufficiently strong and tough to bear the same
usage as natural leather.
In the present invention this is attained by applying as raw material for artifi-
cial leather a felt composed of a suitable mixture of vegetable fibres and wool,
which is saturated with substances. that may partly cement together the single
fibres of the felt to a whole, and partly outwardly offer sufficient hardness and
power of resistance.
The method is the following:-
61
Pure Italian hemp is cut in patches like ordinary wool and carded together
with about half the quantity of coarse, cleaned wool to a wadding" of proper
form, which is packed in linen and felted in the usual way and fulled. The felt
thus produced is washed out and dried and then saturated with a composition
The propor
consisting chiefly of linseed oil, turpentine, glue, caseine and wax.
tion of these ingredients may, of course, vary according to the condition of the
produce desired. In the following is quoted as an instance how a material parti-
cularly fit for sole leather may be produced.

page_text: matter is then absorbed among the fibres of the felt and uniformly spread by
mechanical treatment, for instance by rolling, when the felt has been removed
from the bath.
The product obtained is first dried for about 24 hours at common temperature,
then it is placed for about an hour in a solution of acetate of alumina, and finally
dried perfectly.
The fibres which may, after the drying, protrude from the surface are now
rubbed off, the product is, if desired, dyed on the surface and then pressed
between heated rollers and glazed. The article thus produced is in every respect
very much like real sole leather and may be worked in quite the same way as
the latter.
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. Artificial leather consisting of a felt made of vegetable fibres and wool, im-
bedded in a compound of linseed oil, turpentine, glue, caseine and wax.
2. The method of producing artificial leather, consisting herein: vegetable
fibres are felted together with wool, and the felt formed in this way is saturated
with a compound formed by mixing and heaung linseed oil, colophony, turpen-
tine, wax, glycerine, glue, caseine and a smaller quantity of borax and bichro-
mate of potash, is partly dried and then placed in a solution of acetate of alumina,
whereupon the drying is completed and the manufacture rubbed off, pressed
between heated rollers and glazed.
D
0541 JW. 1900
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C.,
Patent Agents for the Applicant.-