IMPROVE- MENTS IN SEPARATING THE HAIR OR WOOL FROM FRESH OR DRY SKINS, AND PRESERVING THE Hair or WooL IN ITS NATURAL State as if Cut FROM A LIVE ANIMAL.”
Year: 1874

page_text: LETTERS PATENT to Joseph Lambert de Montoison, of 49, Thurlos
Square, South Kensington, London, for the Invention of "IMPROVE-
MENTS IN SEPARATING THE HAIR OR WOOL FROM FRESH OR DRY SKINS,
AND PRESERVING THE Hair or WooL IN ITS NATURAL State as if Cut FROM
A LIVE ANIMAL.”
PROVISIONAL SPECIFICATION left by the said Joseph Lambert de
Montoison at the Office of the Commissioners of Patents, with his
Petition, on the 8th August 1874.
I, JOSEPH LAMBERT DE MONTOISON, of 49, Thurloe Square, South
Kensington, London, do hereby declare the nature of tho said Invention:
for "IMPROVEMENTS IN SEPERATING THE HAIR OR WOOL FROM FRESH OR DRY
SKINS, AND PRESERVING THE HAIR OR WOOL IN ITS NATURAL STATE AS IF CUT
FROM A LIVE ANIMAL," to be as follows:-
:-
The flesh side of the skin is softened with warm water without wetting
the hair or wool, the skin is then covered on the flesh side with a slight

page_text: layer of a solution of quadrisulphite and lime, marking about 10 degrees
of the alkalimeter Twaddlc. The quadrisulphite I employ consists of a
mixture of crystal of hydrosulphite of soda, sulphato of arsenic, green
potass, and hydrosulphate of barium boiled together with 100 parts of
water. This solution I mix with a solution of hydrate of fresh lime and
water to form with the sulphurated sulphito of calcium a pentosulphite
which penctates the thickest of skins almost instantly.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Lambert de Montoison in the Great Scal
Patent Office on the 8th February 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPH
LAMBERT DE MONTOISON, of 49, Thurloe Square, South Kensington,
London, send greeting.
•
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighth day of August, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
cighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, .the said Joseph Lambert de Montoison, Her
special licence that I, the said Joseph Lambert de Montoison, my
executors, administrators, and assigns, or such others as I, the said
Joseph Lambert de Montoison, 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 King-
dom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN SEPARATING THE HAIR OR WOOL
FROM FRESH OR DRY SKINS, AND PRESERVING THE HAIR OR WOOL IN ITS NATURAL
STATE AS IF CUT FROM A LIVE ANIMAL," upon the condition (amongst others)
that I, the said Joseph Lambert de Montoison, my executors or adminis-
trators, by an instrument in writing under my, or their, or one of their
hands and scals, should particularly describe and ascertain the naturo
of the said Invention, and in what manner the same was to be per-

page_text: 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 Joseph Lambert de Montoison, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
-
The flesh side of the skin is softened with warm water without wetting
the hair or wool, the skin is then covered on the flesh side with a slight
layer of a solution of quadrisulphite and lime, marking about ten degrees
of the alkalimeter Twaddle. The quadrisulphite I employ consists of a
mixture of crystal of bydrosulphite of soda, sulphate of arsenic, green
potass, and hydrosulphate of barium boiled together with one hundred
parts of water. This solution I mix with a solution of hydrate of fresh
lime and water to form with the sulphurated sulphite of calcium a
pentosulphite which penetrates the thickest of skins almost instantly.
When the skins or hides are dry I cause them to be softened by the
application of warm or cold water to the flesh side, taking care to avoid
wetting the hair or wool; if the skins or hides are fresh they will not
require to be so washed to soften them, but they may be washed
if they require it before the application of the quadrisulphite I
employ which consists of a mixture of fifty parts of hydrosulphite
of soda, fifteen parts of sulphate of arsenic, ten parts of green potass,
and twenty-five parts of hydrosulphate of barium boiled or dissolved
together with one hundred parts of water. This solution I mix
with a solution of one part of hydrate of fresh lime and four parts
of water to form with the sulphurated sulphite of calcium a pento-
sulphite. Instead of the potass I may employ pearl ashes or other potass
in a caustic state or saturated with sulphureted hydrogen if it is
employed in a natural alkali. I am able also to employ other alkali in
the same combination to form a quadrisulphite and pentosulphite with
the lime, but I give the preference to the first mentioned. The flesh
side of the skin or hide I cover with such solution which penetrates the
thickest skin almost instantly, and the wool or hair is separated from
the skin preserved in its natural state as if cut from a live animal.
Having thus described the nature of my Invention, and the manner

page_text: of performing the same, I claim for separating the hair or wool from
fresh or dry skins or hides, substantially as herein-before described.
'
In witness whereof I, the said Joseph Lambert do Montoison,
have hereunto set my hand and seal, the Fourth day of
February, in the year of our Lord One thousand eight hundred 5
and seventy-five.
Witness,
JNO. R. WOODHEAD.
J. L. DE. MONTOISON. (L.S.)