An Improved Method of Making Leather Waterproof or Flexible.
Year: 1887

page_text: Date of Application, 1st Feb., 1887.
Complete Left, 5th Mar., 1887.
Complete Accepted, 17th May, 1887.
PROVISIONAL SPECIFICATION.
An Improved Method of Making Leather Waterproof or Flexible.
EDWIN DUNKLEY of 49 Cloutsham Street, Northampton Shoe Finisher, and
ALFRED DUNKLEY of No. 2 Court Wellington Street Northampton, Press-man, do
hereby declare the nature of our invention for AN IMPROVED METHOD OF MAKING
LEATHER WATERPROOF OR FLEXIBLE to be as follows :-
An improved method of making leather waterproof or flexible so that when the
same is used for the manufacture of boots or shoes or other articles the same are damp
proof and waterproof, and also may be made flexible if required. At the same time
such waterproofing adds to the wearing properties of the leather.
We in carrying out our said invention employ various ingredients such as mutton
suet, wax, vinegar and turpentine.
We cause the mutton suet to be thoroughly dissolved and properly strained off, the
wax is then minced or made into a pulp, it is then placed with the suet into a tank or
resevoir and heated to a suitable degree, we then add vinegar and turpentine, the whole
is then made to boil to a high degree of heat, we then place the leather to be water-
profed or made flexible in a machine provided with a wheel with hooks or clamps for
the purpose of holding the leather the wheel is then made to revolve slowly and draws
the leather through the liquid several times until the same becomes thoroughly
saturated, we then remove the leather from the wheel and place it in a kneading room
where it goes through a process of kneading until the leather becomes thoroughly
waterproofed or flexible. The leather is then ready for use. By this method the
leather is made thoroughly waterproof or flexible and when used for the manufacture
of boots or shoes, adds greatly to the wear and durability of the same.
EDWIN DUNKLEY.
ALFRED DUNKLEY.

page_text: COMPLETE SPECIFICATION.
An Improved Method of Making Leather Waterproof or Flexible.
EDWIN DUNKLEY of 49 Cloutsham Street Northampton Shoe Finisher and
ALFRED DUNKLEY of No. 2 Court Wellington Street Northampton, Press-man, 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:-
An improved method of making leather waterproof or flexible so that when the
same is used for the manufacture of boots or shoes or other articles the same are damp
proof and waterproof, and also may be made flexible if required. At the same time
such waterproofing adds to the wearing properties of the leather.
We in carrying out our said invention employ various ingredients such as mutton
suet, wax, vinegar and turpentine. We cause 12 parts of mutton suet to be thoroughly
dissolved and properly strained off, 8 parts of wax is then minced or made into a pulp..
it is then placed with the suet into a tank or resevoir and heated to a suitable degree,.
we then add 4 parts of vinegar and one of turpentine the whole is then made to boil
to a suitable degree of heat (about 212 degrees) we then place the leather to be water-
proofed or made flexible in a machine provided with a wheel with hooks or clamps for
the purpose of holding the leather as shewn in the accompanying drawing and
marked A-the wheel is then made to revolve slowly and passes the leather into the
machine (as shewn in figure B) and through the liquid several times until the same
becomes thoroughly saturated we then remove the leather from the wheel and place it
in a kneading room where it goes through a process of kneading such as rubbing
pressing and cleaning until the leather becomes thoroughly waterproofed or flexible.
The leather is then ready for use. By this method the leather is made thoroughly
waterproof or flexible and when used for the manufacture of boots or shoes adds
greatly to the wear and durability of the same.
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 :-
Firstly. An improved method of making leather waterproof or flexible.
Secondly. The manufacture and use of the said leather."
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