IMPROVED MEANS FOR RENDERING LEATHER MORE DURABLE AND FLEXIBLE
Year: 1865

page_text: LETTERS PATENT to Louis Gustave Sourzac and Louis Bombail, of
Bordeaux, Gironde, in the Empire of France, Gentlemen, for the
Invention of "IMPROVED MEANS FOR RENDERING LEATHER MORE DURABLE
AND FLEXIBLE."
Sealed the 6th March 1866, and dated the 15th September 1865.
PROVISIONAL SPECIFICATION left by the said Louis Gustave Sourzac
and Louis Bombail at the Office of the Commissioners of Patents, with
their Petition, on the 15th September 1865.
We, LOUIS GUSTAVE SOURZAC and LOUIS BOMBAIL, of Bordeaux, Gironde,
in the Empire of France, Gentlemen, do hereby declare the nature of the
said Invention for "IMPROVED MEANS FOR. RENDERING LEATHER MORE DURABLE
AND FLEXIBLE," to be as follows, that is to say:-
This Invention consists, first, of a bath composed as follows:-In about
5 quarts of water place about 21 pounds of red tartar, 5 ounces of common
salt, and about 2 ounces of Brazil wood. The whole is heated for half an
hour, and kept for use, the residue remaining at the bottom of the bath, so
that it may retain its strength and efficacy.
The second part of this Invention consists of a coating of the following
composition-Take about 13 ounces of linseed oil, known in commerce by

page_text: the name of fatty oil, about 13 ounces of ordinary linseed oil, and about
1 ounces of orchanet; mix the whole together, and place the mixture on a
gentle fire for two hours, so as to reduce it to about 17 ounces. When the
mixture or coating becomes cold, add to it 2 ounces of dried garlic peeled
and crushed, and about one ounce of burnt bread crusts reduced into small
pieces; place the whole in any suitable recipient, taking care to cover it.
The above-described coating and bath are applied in the following manner:
-Take the leather, and apply on the side of the hair a single layer of the
coating. When the leather has absorbed the first coating place it in the bath
for about 48 hours, after which time it must be withdrawn and dried in the
shade, care being taken that it is not placed in the sun or in a stove.
As
soon as the leather is dry we apply one or several more layers of the coating,
according to the quality of the leather, in such a manner that it may be
entirely soaked by the coating. The leather must then be left to dry in the
shade from 12 to 15 days, according to the temperature, when it will be fit
for commercial purposes.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Louis Gustave Sourzac and Louis Bombail in the Great Seal
Patent Office on the 10th March.1866..
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, LOUIS
GUSTAVE SOURZAC and LOUIS BOMBAIL, of Bordeaux, Gironde, in the Empire
of France, Gentlemen, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifteenth day of September, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-ninth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Louis Gustave Sourzac and Louis Bombail, Her special license that we,
the said Louis Gustave Sourzac and Louis Bombail, our executors, adminis-
trators, and assigns, or such others as we, the said Louis Gustave Sourzac
and Louis. Bombail, our executors, administrators, or assigns, should at any
time agree with, and no others, from time to time and at all times there-
after 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 Man, an Invention for "Im-
PROVED MEANS FOR RENDERING LEATHER MORE DURABLE AND FLEXIBLE," upon the
condition (amongst others) that we, the said. Louis. Gustave Sourzac and

page_text: Louis Bombail, our executors or administrators, by.an. instrument in writingi
under our or their hands and seals, or under the hand and seal of one of us or;
them, should particularly describe and ascertain the nature of the said Invention,!
and in what manner the same was to be performed, 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 we, the said Louis Gustave: Sourzac and Louis.
Bombail, do hereby declare the nature of our 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:
"
Our Invention consists, first, in the composition of a bath; secondly, in that
of a coating for rendering leather more durable and flexible...
Composition of the bath.-Introduce in about five quarts of water about
two and a quarter pounds of red tartar, about five ounces of common salt,
about two ounces of Brazil wood; the whole is boiled during half an hour,
and kept for use, the residue remaining at the bottom of the bath, so as to
retain its entire strength and efficacity.
Composition of the coating.-Take about thirteen ounces of siccative linseed
oil, known in commerce by the name of fatty oil, about thirteen ounces of
ordinary linseed oil, about one and a half of orchanet; mix the whole
together, and place the mixture on a gentle fire during two hours to reduce it
to about one pound and one ounce. When the mixture or coating becomes
cold add to it about seventeen ounces of dried garlic pealed and crushed, and
about one ounce of burnt bread crusts reduced into small pieces; place the
whole in any suitable recipient, taking care to cover it. It is then to be kept
for use. The properties of the coating increase with time.
The time that the leather
Application of the coating and of the bath on leather, for rendering it more
durable and flexible.-Take the leather and apply on the side of the hair a
single layer of the coating; when the leather has absorbed the first coating
place it in the bath, where it is left to rest about forty-eight hours; after this
interval of time withdraw it from the bath and dry it in the shade, taking
care never to place it in the sun or in a stove.
takes to dry is subordinate to its quality. When it is seen that the leather is
dry, we again apply to it, on the side of the hair, one or several layers of the
coating, according to the quality of the leather, in such manner that this
latter may be entirely soaked by the coating, which is soon ascertained by
examining the leather on the fleshy side, which should present to the eye a
black colour, being similar to that of the side of the hair; this will be sufficient
proof that the operation is finished. From this moment the leather must be

page_text: left to dry in the shade during twelve to fifteen days, according to the tem-
perature, and afterwards introduced into commerce with the: certitude of:
having rendered it one hundred to one hundred and twenty-five per cent. more:
durable.
Having now described 'the nature of our said Invention, and in what manner
the same is to be performed, we wish. it..to be understood that we do noti
confine 'ourselves to the precise details herein laid down.; but what we claim
is, the improved compositions herein described for rendering leather more
durable and flexible, as herein-before described.
In witness whereof, we, the said Louis Gustave Sourzac and Louis
Bombail, have hereto set our hands and seals, this Third day of March,
in the year of our Lord One thousand eight hundred and sixty-six.
Witness,
H. A. DUFRENÉ,
Civil Engineer,
10, Rue de la Fidélité,
Paris,
Third day of March 1866.
L. BOMBAIL.
(L.B.)