IMPROVEMENTS IN WATERPROOFING AND PREPARING LEATHER
Year: 1874

page_text: LETTERS PATENT to Isidor Frankenburg, of Manchester, in the
County of Lancaster, Manufacturer of Leather and Waterproof
66
Fabrics, for the Invention of IMPROVEMENTS IN WATERPROOFING AND
PREPARING LEATHER."
Scaled the 30th October 1874, and dated the 9th May 1874.
PROVISIONAL SPECIFICATION left by the said Isidor Frankenburg
at the Office of the Commissioners of Patents, with his Petition,
on the 9th May 1874.
I, ISIDOR FRANKENBURG, of Manchester, in the County of Lancaster,
5 Manufacturer of Leather and Waterproof Fabrics, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN WATERPROOFING AND
PREPARING LEATHER," to be as follows:-
:
My Invention consists in waterproofing and preparing leather by
coating it with a solution of india-rubber in naphtha combined with
other chemical agents. This solution is spread over the leather by
means of brushes or other equivalents and then the leather is exposed to

page_text: the atmosphere and artificial heat until the naphtha is evaporated. The
leather is thus rendered pliable and perfectly impervious to moisture,
and consequently particularly suitable for being made into leggings, bags,
and other articles..
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Isidor Frankenburg in the Great Seal Patent
Office on the 7th November 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ISIDOR
FRANKENBURG, of Manchester, in the County of Lancaster, Manu-
facturer of Leather and Waterproof Fabrics, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of May, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Isidor Frankenburg, Her special licence
that I, the said Isidor Frankenburg, my executors, administrators, and
assigns, or such others as I, the said Isidor Frankenburg, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Mau, an Invention for "IMPROVEMENTS IN
WATERPROOFING AND PREPARING LEATHER," upon the condition (amongst
others) that I, the said Isidor Frankenburg, my executors or adminis-
trators, by an instrument in writing under my, or their, or one of their
hands and seals, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be per-
formed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said Isidor Frankenburg, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement (that is to say):-
My Invention consists in waterproofing and preparing leather by

page_text: coating it with a solution of india-rubber in naphtha combined with
chloride, sulphur, and bi-sulphide of carbon or other chemical agents.
This solution is spread over the leather by means of scrapers, hard
brushes, or other equivalents, and then the leather is exposed to the
atmosphere and to artificial heat in an oven until the naphtha is evapo-
rated. The leather is thus rendered pliable and perfectly impervious to
moisture, and is consequently particularly suitable for being made into
boots, shoes, leggings, bags, and other articles, and for hat leather linings
to prevent the perspiration and grease from the head penetrating through
the body of the hat.
Having thus stated the nature of my Invention, and described the
manner of performing, I wish it to be understood that I do not limit
myself to the details given, as the same may be varied according to the
nature or quality of the leather to be operated upon and the purpose
for which it is intended, and I claim, waterproofing and preparing
leather for the purposes described.
In witness whereof, I, the said Isidor Frankenburg, have herc-
to set my hand and seal, this Sixth day of November One
thousand eight hundred and seventy-four.
ISIDOR FRANKENBURG. (L.S.)