DISSOLVING & TREATING REDONDA PHOSPHATE FOR THE MANUFACTURE OF SUNDRY VALUABLE COMMERCIAL SUBSTANCES
Year: 1875

page_text: LETTERS PATENT to George Jones, Analytical Chemist, 106, Leaden-
hall Street, London, E.C., for the Invention of "DISSOLVING &
TREATING REDONDA PHOSPHATE FOR THE MANUFACTURE OF SUNDRY VALUABLE
COMMERCIAL SUBSTANCES."
Sealed the 28th January 1876, and dated the 5th August 1875.
PROVISIONAL SPECIFICATION left by the said George Jones at the
Office of the Commissioners of Patents, with his Petition, on the
5th August 1875.
I, GEORGE JONES, Analytical Chemist, 106, Leadenhall Street, London,
E.C., do hereby declare the nature of the said Invention for "DISSOLVING
& TREATING REDONDA PHOSPHATE FOR THE MANUFACTURE OF SUNDRY VALUABLE
COMMERCIAL SUBSTANCES," to be as follows (that is to say) :-
I boil up the finely ground mineral (either previously roasted or
otherwise) in a solution of caustic alkali, which may be potash or soda,
and decant or separate the liquor from the insoluble portion, filtering the
same if necessary. This liquor may be evaporated to dryness for manure,

page_text: or only partly evaporated and allowed to crystallise. In the former case
the product would consist of tri-sodic or tri-potassic phosphate with
alumina and alkali; or in the latter case the pure crystallised alkaline
phosphate only, the novelty in the above process being the treatment of
redonda phosphate of alumina with a boiling solution of caustic alkali
for obtaining phosphate of soda, potash, or any other phosphate or
phosphoric acid.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Jones in the Great Seal Patent Office on
the 3rd February 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
JONES, Analytical Chemist, 106, Leadenhall Street, E.C., send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of August, in the year of
our Lord One thousand cight hundred and seventy-five, in the thirty-
ninth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said George Jones, Her special licence,
that I, the said George Jones, my executors, administrators, and
assigns, or such others as I, the said George Jones, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thercafter 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 "DISSOLVING AND
TREATING REDONDA PHOSPHATE FOR THE MANUFACTURE OF SUNDRY VALUABLE
COMMERCIAL SUBSTANCES," upon the condition (amongst others) that I, the
said George Jones, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, 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 Scal Patent Office within six calendar
months next and immediately after the date of the said Letters
Patent.

page_text: to be performed, to be particularly described and ascertained in and
by the following statement (that is to say) :-
My Invention has reference to obtaining from the mineral substance
known as the redonda phosphate of alumina a double salt, completely
soluble in water, consisting of tri-sodic or tri-potassic phosphate with
alumina, and employing the same for precipitating sewage, and for
special artificial manures or other commercial products.
And in order that my said Invention may be more fully understood
and readily carried into effect, I now proceed to describe in detail the
mode of performing the same (that is to say) :—
I manufacture double salts as aforesaid composed of alumina, phos-
phoric acid, and soda or potash, and completely soluble in water, and of
an alkaline nature containing water of combination, by either dissolving
the mineral previously broken up into suitable sized pieces in a heated
solution of caustic alkali, and allowed to remain for some time until
finally filtered and evaporated to the consistency of syrup, which
solidifies upon cooling, or calcining the mineral with soda ash or pearl
ash in a suitable furnace, and subsequently dissolving out the double
salt with water and evaporating and solidifying as before described, but
instead of employing the mineral in broken fragments in the latter case,
it will be necessary to grind the mineral and mix it intimately with the
alkaline salt, viz., the soda ash or pearl ash aforesaid.
In conclusion to the foregoing description I would here briefly note
that the proportion of the several ingredients employed by me in the
manufacture aforesaid, must necessarily vary with the composition of
the mineral, but I always employ sufficient alkali to form three
equivalents to one equivalent of alumina and one of phosphoric acid.
Having now fully described and ascertained the nature of this my said
Invention, and the manner in which the same is to be performed and
carried into effect, I would have it clearly understood that I do not
confine myself to the precise details herein-before set forth and described,
as the same may be otherwise varied without departing from the general
principle of this my said improvements, nor do I claim as new and of
my said Invention the exclusive use of the several ingredients, combi-
nations, and processes above referred to, except when the same are
employed in and for the purposes of my said Invention, which I hereby

page_text: declare to consist in the forming of double salts from the redonda
phosphate of alumina, substantially in the manner and for the purposes
herein before set forth and described.
In witness whereof, I, the said George Jones, have hereunto set
my hand and scal, this First day of February, in the year of
our Lord One thousand eight hundred and seventy-six.
Witness,
B. F. WEATHERDON,
Law Chambers,
Chancery Lane.
GEORGE JONES. (L.S.)