A WATERPROOF PREPARATION TO MAKE FABRICS, THREAD, TEXTILE MATTERS AND OTHERS IMPENETRABLE AGAINST WATER
Year: 1863

page_text: LETTERS PATENT to Pierre François Louis Bienvaux-Him, of the Village
of Le Cateau, (Nord,) France, for the Invention of "A WATERPROOF
PREPARATION TO MAKE FABRICS, THREAD, TEXTILE MATTERS AND OTHERS
IMPENETRABLE AGAINST WATER."
Sealed the 9th October 1868, and dated the 15th August 1863.
COMPLETE SPECIFICATION filed by the said Pierre François Louis Bienvaux-
Him at the Office of the Commissioners of Patents, with his Petition and
Declaration, on the 15th August 1863, pursuant to the 9th Section of.
the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PIERRE
FRANÇOIS LOUIS BIENVAUX-HIM, of the Village of Le Cateau, (Nord,) France,
send greeting.
WHEREAS I am in possession of an Invention for "A WATERPROOF PRE-
PARATION TO MAKE FABRICS, THREAD, TEXTILE MATTERS AND OTHERS IMPENETRABLE
AGAINST WATER," and have petitioned Her Majesty to grant unto me, my.
executors, administrators, and assigns, Her Royal Letters Patent for the same,
and have made solemn declaration that I verily believe myself to be the first.
and true Inventor thereof.

page_text: NOW KNOW YE, that I, the said Pierre François Louis Bienvaux-
Him, do hereby declare that the following Complete Specification, under my
hand and seal, fully describes and ascertains the nature of my said Invention,
and the manner in which the same is to be performed, that is to say: —
To obtain, say, two pounds weight of my improved waterproof preparation
at a medium strength, I operate as follows:-To about 2 ounces of oil
obtained from oleaginous seed, or otherwise obtained, so that it be slightly
drying, I add gelatine obtained from alga or seaweed in sufficient quantity to
bind them together into one body. In this mixture I dissolve at a low tem-
perature a quantity of resin of any sort, varying from about an ounce to about
an ounce and a quarter, according to quality. This mixture of three matters
thus made, I continue to heat it slowly and progressively, increasing the heat
up to about 122%. "Fahrenheit." During this cooking operation I slightly
agitate the mixture, and to keep it well bound add carbonate of soda in the
maximum proportion of 3 per cent. of the quantity of matters employed in the
said mixture. (I may replace this soda by one per cent. of potash or borax,
the maximum proportion, and always to the quantity of matters employed.)
I then add the quantity of water which will suffice to bring the whole to the
weight of two pounds, continuing to heat until a slight white scum appears
on the surface of the said liquid. 1 plunge the article to be treated into this
preparation at a temperature of from 77% to 86% "Fahrenheit," and there
leave it until perfectly impregnated, when I withdraw and rinse it briskly
in a water albuminated in the maximum proportion of 3% "Baumé," and at
a temperature of from of 95% to 104% "Fahrenheit," I then dry and press
the article, or press with hot cylinders. The waterproofing preparation above
described gives impermeability and unchangeableness to such articles as yarn,
woven fabrics, and cordage of every hue and made from any textile or filamentous
material, flax, hemp, phormium cotton, or other; it also renders impervious
paper, cardboard, and other matters, and it communicates this double quality
to the articles without changing their primitive condition or altering their
nature, the only difference being that it gives to some materials a slight and
almost imperceptible yellow tint. It contains no hurtful matter, and may be
used for materials to be placed in contact with food, and having the property
of resisting and repelling water. This preparation may be used with advan-
tage to prevent water penetrating into sails and cordage, and preserve their
lightness.
Having now described the nature of my said Invention, and the means by
which I carry it into practical effect, I would here observe that I do not

page_text: confine myself to the precise proportions herein given, as such may vary with
the quality of the matters used, but that I claim the exclusive use of a water-
proofing preparation composed and prepared substantially as herein-before
described.
In witness whereof, I, the said Pierre François Louis Bienvaux-Him,
have hereunto set my hand and seal, this Third day of August, One
thousand eight hundred and sixty-three.
P. F. L. BIENVAUX-HIM. (LS.)