A Process for Clearing Hides, Skins, Hair, Wool, or Fur from Lime.
Year: 1886

page_text: Date of Application, 5th Oct., 1886.
Complete Left, 29th June, 1887.
Complete Accepted, 5th Aug., 1887.
A Process for Clearing Hides, Skins, Hair, Wool, or Fur
from Lime.
1, EDWARD PLANTA NESBIT, of No. 26 Priory Road, Wandsworth, in the County
of Surrey, Gentleman, do hereby declare the nature of this invention to be
as follows:
In my provisional specification No. 7744 of 1886 I have described means of
extracting lime from hides or skins preparatory to their being tanned. Finding that
the like treatment is applicable not only as a preliminary to tanning operations but
also to other operations on hides, skins or scraps of these, such as may be used
in the manufacture of size or glue, and also to hair wool or fur which has under-
gone lime treatment or may be more or less impregnated with lime, I, according
to my present invention, subject such materials to what I may term a per-
carbonating process in the following manner. I place the materials to be operated
on in a vessel along with water and, closing the vessel, I force into it carbonic
acid gas while the materials are kept agitated. The excess of carbonic acid causes
solution of the lime, which becomes entirely eliminated from the materials by washing.
The carbonic acid may be applied to the materials in open vessels but with less
efficiency and economy than when the vessels are closed against escape of the
carbonic acid.
ABEL & IMRAY,
28, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: from Lime.
I, EDWARD PLANTA NESBIT of No. 26 Priory Road Wandsworth in the County of
Surrey, Gentleman, 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 :-
In my Specification No. 7744 of 1886, I have described means of extracting lime
from hides or skins preparatory to their being tanned. Finding that the like treat-
ment is applicable not only as a preliminary to tanning operations but also to other
operations on hides skins or scraps of these, such as may be used in the manufacture
of size or glue, and also to hair wool or fur which has undergone lime treatment or
may be more or less impregnated with lime; I, according to my present invention,
subject such materials to what I may term a per-carbonating process in the following
manner. I place the materials to be operated on in a vessel along with water and,
closing the vessel, I subject them to the action of carbonic acid gas either by forcing
the gas generated outside into the vessel or by generating the gas in the vessel itself.
The excess of carbonic acid causes solution of the lime which becomes eliminated
from the materials. The carbonic acid may be applied to the materials in open
vessels but with less efficiency and economy than when the vessels are closed against
escape of the carbonic acid.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I hereby declare that I do not claim
as my present invention the application of the process described to limed hides or
skins preparatory to their being tanned, that having been the subject of my previous
Patent No. 7744 of 1886 above referred to, but what I claim is :-
-
The herein described process for clearing hides, skins, hair, wool, or fur from lime
by subjecting them while in water to the action of carbonic acid gas.
Dated this 29th day of June 1887.
ABEL & IMRAY,
Agents for the Applicant.