The Application of Blood Serum or any other Albuminous Liquid to the Polishing and Preserving of all Leather Articles.
Year: 1890

page_text: Date of Application, 12th Aug., 1890
Complete Specification Left, 12th May, 1891-Accepted, 18th July, 1891
PROVISIONAL SPECIFICATION.
The Application of Blood Serum or any other Albuminous Liquid to
the Polishing and Preserving of all Leather Articles.
We THOMAS BARLOW WOOD Caius College Cambridge (Student) and JAMES
MOWBRAY PILLANS Cadlards, Chislehurst (Albumen Manufacturer) do hereby
declare the nature of this invention to be as follows:-
This invention has reference to a new polish and preservative for all leather
articles, the polish consisting essentially of an albuminous liquid with or without
preserving or coloring agents.
The following is the ordinary composition of the polish―
Blood serum (or a solution of any albumen) with thymol sufficient to preserve it.
For thymol may be substituted any other suitable preserving agent, and coloring
matters (e.g. lampblack etc.) may be added according to the purpose for which the
polish is required.
Having described the said invention we would observe that we do not limit
ourselves to the above ingredients, but what we claim as the invention is the
application of albumen to the polishing and preserving of leather.
Dated this 8th day of August 1890.
THOMAS BARLOW WOOD.
J. M. PILLANS.
COMPLETE SPECIFICATION.
The Application of Blood Serum or any other Albuminous Liquid to
the Polishing and Preserving of all Leather Articles.
We, THOMAS BARLOW WOOD, of Caius College, Cambridge, in the County of
Cambridge, Student, and JAMES MOWBRAY PILLANS, of Saxby, Chislehurst, in
the County of Kent, Albumen 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 :-
This invention relates to a new material or composition for polishing and
preserving leather and it consists chiefly in combining an albuminous liquid, such
as blood serum, with a preserving agent such as thymol.
In carrying out our invention we find it advantageous to combine these substances
in the proportion of twenty gallons of blood serum to four ounces of thymol.
Blood serum is slightly alkaline and for this reason is difficult to preserve; we
therefore find by experiment that it is necessary to render the blood serum slightly
acid. This we preferably accomplish by the use of vinegar which we may add
directly to the blood serum in the proportion of, say, one quart to twenty gallons.
We however obtain the best results by mixing the thymol with the vinegar and
then gradually pouring the mixture into the scrum, the liquid being well stirred at
the time, and also occasionally during the next five or six days for the purpose
of allowing the serum to thoroughly take up the whole of the thymol.
After about seven days, more or less according to temperature, a chemical
change commences to take place, the liquid which was of a reddish colour turning
brown and a whitish substance being precipitated. When this reaction, which
generally occupies from two to four weeks, is completed the liquid is drawn off'
from the precipitate. If desired the liquid may be coloured and scented.
Instead of using blood serum as liereinbefore described we may substitute

page_text: therefor dissolved blood or egg albumen, the treatment being similar to that
described.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what we
claim is :-
:―
The manufacture and use of the composition for dressing leather, substantially
as hereinbefore described.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.