IMPROVEMENTS IN THE MANUFACTURE OF RAW AND REFINED SUGAR
Year: 1852

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPH
BRANDEIS, of Great Tower Street, in the City of London, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Twelfth day of June, in the fifteenth year of Her reign, did, for
Herself, Her heirs and successors, give and grant unto me, my exors, admors,
and assigns, Her especial license, full power, sole privilege and authority, that
I, the said Joseph Brandeis, my exors, admors, and assigns, or such others
as I, my exors, admors, or assigns, should agree with, and no others, should
and lawfully might, during the term of years therein expressed, make, use,
exercise, and vend my Invention of "IMPROVEMENTS IN THE MANUFACTURE OF
RAW AND REFINED SUGAR;" in which said Letters Patent is contained a proviso,
that I, the said Joseph Brandeis, shall cause a particular description of the
nature of my said Invention, and in what manner the same is to be performed,
to be enrolled in Her Majesty's High Court of Chancery, within six calendar
months next after the date of the now reciting 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
Joseph Brandeis, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, is fully described and ascer-
tained in and by the following statement thereof that is to say:-
My Invention consists, first, in the precipitating lead from saccharine solu-
tions by means of the hydro-sulphuret of potash, soda, or ammonia, and also
by means of sulphuret of the same bases; and, second, in removing any excess

page_text: of the precipitant which remains in the saccharine solution after all the lead
is precipitated.
I will now describe the manner in which my Invention is to be performed.
The sugar is to be dissolved in the ordinary way, and heated to about one
hundred and eighty degrees Fahrenheit, when about one and a half per cent.
of sub-acetate of lead is to be added; the quantity of acetate of lead will vary
according to the quality of the sugar; more acetate of lead being required
when the sugar is of inferior quality, and when, well mixed together, it is to
be filtered and to the filtered liquor hydro-sulphuret of soda is added until
every trace of lead is precipitated, and which is ascertained by taking a small
portion of the liquor, and adding a little hydro-sulphuric acid, when, if all the
lead is removed, it will make no further precipitate or change its color. After
it is ascertained that all the lead is removed, and that there is an excess of the
hydro-sulphuret of soda, I add a small quantity of one of the following sub-
stances, videlicet, some of the insoluble salts of lead, such as the phosphate,
tartrate, sulphate, &c., or some of the insoluble salts of manganese, as the
phosphate, &c., which will abstract the excess of hydro-sulphuret of soda
which had been added. The solution is then to be filtered and boiled down in
the usual manner to chrystallize. The same method is pursued when instead
of hydro-sulphuret of soda the hydro-sulphuret of potash or the hydro-
sulphuret of ammonia is employed. The other sulphur, salts of potash, soda,
and ammonia, as the sulphuretted hydro-sulphuret may also be employed for
removing lead from sugar solutions; but I prefer the salts which contain not
more than one equivalent of sulphur to one of base. I, therefore, claim the
use of the hydro-sulphuret and sulphuret of potash, soda and ammonia for
precipitating lead from saccharine solutions.
In witness whereof, I, the said Joseph Brandeis, have hereunto set my
hand and seal, this Eleventh day of December, One thousand eight
hundred and fifty-two
Signed, sealed, and delivered by the
within-named Joseph Brandeis, in the
presence of
JOSEPH MILLER,
JOS. (L.S.) BRANDEIS.
Clerk to Messrs. Tatham & Co., Sol",
Austin Friars, London.

page_text: AND BE IT REMEMBERED, that on the Eleventh day of December, in
the year of our Lord 1852, the aforesaid Joseph Brandeis came before our
said Lady the Queen in Her Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.
Enrolled the Eleventh day of December, in the year of our Lord One
thousand eight hundred and fifty-two.