IMPROVEMENTS IN MANUFACTURING WATERPROOF PAPER
Year: 1845

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ANTOINE
Bossy, of Paris, in the Kingdom of France; Merchant, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by
Her Royal Letters Patent under the Great Seal of Great Britain, bearing
date at Westminster, the Tenth day of July, in the ninth year of Her reign,
did, for Herself Her heirs and successors, give and grant unto me, the said
Antoine Bossy, my 'exors, adññiors, and assigns, Her especial licence, full
power, sole privilege and authority, that I, the said Antoine Bossy, my exors,
adiňors, and assigns, or such others as I, the said Antoine Bossy, my exors,
adiiors, or assigns, should at any time agree with, and no others, from time
and at all times during the term of years therein expressed, should and lawfully*
might make, use, exercise, and vend, within England, Wales, and the Town
of Berwick-upon-Tweed, my Invention of "IMPROVEMENTS IN MANUFACTURING
WATERPROOF PAPER;" in which said Letters Patent is contained a proviso,
that I, the said Antoine Bossy, shall cause a particular description of the
nature of my said Invention, and in what manner the same is to be performed,
to be inrolled in Her said Majesty's High Court of Chancery within six
calendar months next and immediately after the date of the said in part
recited Letters Patent, as in and by the same, reference being thereunto
had, will more fully and at large appear.
NOW KNOW YE; that in compliance with the said proviso, I, the said
Antoine Bossy, do hereby declare that the nature of my said Invention, and

page_text: the manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thereof, that is to say:-
The Invention consists of a mode of manufacturing waterproof paper, by
subjecting the pulp during the process of making the paper to certain solutions
or matters, as will be more particularly described.
The mode of proceeding to carry out my Invention is as follows:-I take two
hundred pounds of pulp. previously prepared according to the ordinary method
of preparing pulp for paper making, and having cut in pieces in the ordinary
manner, put them into a vessel containing water, which water is caused to boil
for about 10 or 12 hours; the pulp is then submitted to the beating engine,
and afterwards placed in a vessel containing a solution of lime water, in order
to bleach it, the strength of which lime water should be about thirty-two
pounds of lime (to the two hundred pounds of pulp) with a sufficient quantity of
water to form a bath for it; into this solution is to be added another solution,
which is made by dissolving three pounds of soda in hot water; the whole is
sto be well mixed together and heated by steam or other suitable means, and
allowed to remain for some time, when it is to be taken out, and is then in a
fit state to be operated upon according to my Invention, in order to render
it waterproof. The compositions that I employ for that purpose are as
follows: I take four pounds of psylium (a drug well known to chemists), and
dissolve it in hot water, and strain it through a sieve.; I then add about fifty
pounds of soap, made from resin, or palm or cocoa-nut oil, or any other
nedorous fatty matter, (or, in place of the matters being saponified, the oils or
fats may be employed in their natural state), and dissolve it in the liquid.
obtained from the psylium, and add sufficient water to make a bath for the
quantity of pulp. This quantity is to be divided into two parts, by measure),
and the pulp having had the water drained from it without pressing is to
be immersed in one part thereof for about three or four hours, during which
time the whole is to be well macerated, and the temperature to be kept up by
steam or otherwise during the operation of maceration; it is then to be well.
strained, as before explained. I then take a solution of sulphate of alumina
and water, containing about twenty pounds of sulphate of alumina dissolved in
a sufficient quantity of water to form a bath, and immerse the pulp in half the
quantity of such solution for about two hours, keeping it constantly heated
during that time, after which it is to be well drained and immersed in.
the other half quantity of psylium and soapy or fatty matters, as before.
described, and from thence it is to be immersed in the other half quantity of
the sulphate of alumina and water; and after having been subjected to these
four solutions it may be conveyed to the engine, in order that the trituration or.

page_text: beating may be completed; it is then in a fit state for the operation of paper
making to be carried on, and it may be sized with vegetable size according to
the ordinary method of sizing paper; or, in place of vegetable size, animal
size may be used when the paper is sufficiently dry.
Having thus described the nature of the Invention, and the manner of
performing the same, I would remark that I lay no claim to any method
of bleaching the pulp, nor do I confine myself to any material from which the
paper is to be made; but what I claim is the manufacturing waterproof paper
by submitting the pulp to the repeated solutions or compositions, as herein
described.
In witness whereof, I, the said Antoine Bossy, have hereunto set my
hand and seal, this Tenth day of January, in the year of our Lord
One thousand eight hundred and forty-six.
Enrolled the Tenth day of January, in the year of our Lord One thousand
eight hundred and forty-six.