Improvements in and relating to the Waterproofing of Leather.
Year: 1891

page_text: Date of Application, 4th Mar., 1891
Complete Specification Left, 17th Nov., 1891-Accepted, 9th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Waterproofing of Leather.
I, OTTO BRUNNER, of 293 Moss Lane East, Manchester in the County of
Lancashire, Foreign Correspondent and Bookkeeper do hereby declare the nature
of this invention to be as follows:-
:-
This invention relates to a simple and economical method of waterproofing new
leather whereby any intelligent person can render new leather thoroughly impervious
to wet or moisture of any kind.
The waterproofing solution consists of Castile soap dissolved in turpentine oil and
mixed with hot water. The proportions are about as follows:-
Castile soap
Turpentine oil
Hot water
-
Total
-
1 ounce
-
4 ounces
2 ounces
7 ounces.
7 ounces of the solution so prepared is sufficient to waterproof the soles of two
pairs of ordinary boots. It is spread equally over the surface of the leather by a
small brush or other convenient means and allowed to soak in; when thoroughly
dry another coat is added and so on until the whole of the 7 ounce solution has
been used for the two pairs of boots. A fixing mixture consisting of concentrated
silicate of soda, and linseed oil in about the proportions of 2 ounces of concentrated
silicate of soda to 3 ounces of linseed oil is then used. Five ounces of the fixing
mixture will be sufficient for the soles of two pairs of boots and it is all applied in
coats exactly in the same manner as the waterproofing solution, but it must always
be well shaken before using. Care must be taken that each coat of waterproofing
solution and fixing mixture is thoroughly dry before the next is applied.
When the leather has been treated as above described it is put aside in a warm
room or other place for three or four days so as to thoroughly dry, after which it
is ready for use.
Dated this 4th day of March 1891.
CASTLE SMITH,
Invention Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to the Waterproofing of Leather.
I, OTTO BRUNNER, of 293 Moss Lane East, Manchester, in the County of
Lancashire, Foreign Correspondent and Bookkeeper, 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 simple and economical method of waterproofing new
leather whereby any intelligent person can render new leather thoroughly impervious
to wet or moisture of any kind.
The waterproofing solution consists of Castile soap dissolved in turpentine oil and
mixed with hot water.

page_text: 5 ounces of the solution so prepared is sufficient to waterproof the soles of two
pairs of ordinary boots. It is spread equally over the surface of the leather by a
small brush or other convenient means and allowed to soak in when thoroughly
dry, another coat is added and so on until the whole of the 5-ounce solution has
been used for the two pairs of boots. A fixing mixture consisting of concentrated
silicate of soda and linseed oil, in about the proportion of 2 ounces of concentrated
silicate of soda to 3 ounces of linseed oil, is then used. Five and a half ounces of
the fixing mixture will be sufficient for the soles of two pairs of boots and it is all
applied in coats exactly in the same manner as the waterproofing solution, but it
must always be well shaken before using. Care must be taken that each coat of
waterproofing solution and fixing mixture is thoroughly dry before the next is
applied.
When the leather has been treated as above described, it is put in a warm room
or other place for three or four days so as to thoroughly dry, after which it is
ready for use.
י,
In practice I have found that the same proportions of Walker's IXL boiled oil
bearing the registered trade mark "Paintoleine IXL may be substituted for the
linseed oil in the above compositions with excellent effect, as it is both cheaper and
more suitable for the purpose.
When it is required to employ but one solution for the waterproofing operation,
I proceed as follows-the ingredients being used in the same proportions as
hereinbefore described :-
The Castile soap in a finely divided state is dissolved in the turpentine oil and
the solution allowed to stand awhile. The paintoleine and silicate of soda are then
added and the mixture well stirred. Before. being applied to the leather, the
mixture should be well shaken.
If desired, the leather treated with the said mixture and allowed to dry may be
immersed in a freshly made solution of one ounce of bicarbonate of soda in four
ounces of water for a quarter of an hour. This finishing operation will be found to
render the whole process very complete and effective, but is not absolutely
necessary for its success.
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) The use of a solution of Castile soap in turpentine oil for waterproofing
leather.
(2) The use of a mixture of concentrated silicate of soda and Walker's IXL
boiled oil for fixing the waterproofing solution, such fixing mixture being applied
with or after the waterproofing mixture to the leather surface.
(3) The use of a solution of bicarbonate of soda for finishing the leather water-
proofed by the process hereinbefore described.
Dated this 17th day of November 1891.
CASTLE SMITH,
Invention" Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.