IMPROVEMENTS IN THE Manu- FACTURE OF PHOSPHATE OF IRON, AND ITS APPLICATION TO THE PREPARATION OF ALCALINE PHOSPHORUS. AND TO THE EXTRACTION OF PHOSPHORUS." PROVISIONAL SPECIATION
Year: 1875

page_text: LETTERS PATENT to John Box, of 20, Great George Street, West-
minster, Civil Engineer, Edouard Aubertin, of No. 66, in the
Boulevard of Strasburg, in the City of Paris, Gentleman, Leopold
Boblique, of No. 72, in the same Boulevard, Chemist, and Hypolite
Leplay, of Ruello des Meuniers, No. 4, at Bercy, in the City of
Paris, Chemist, for the Invention of "IMPROVEMENTS IN THE Manu-
FACTURE OF PHOSPHATE OF IRON, AND ITS APPLICATION TO THE PREPARATION
OF ALCALINE PHOSPHORUS. AND TO THE EXTRACTION OF PHOSPHORUS."
PROVISIONAL SPECIFICATION left by the said John Box, Edouard
Aubertin, Leopold Boblique, and Hypolite Leplay at the Office of
the Commissioners of Patents, with their Petition, on the 16th
January 1875.
JOHN Box, of 20, Great George Street, Westminster, Civil Engineer,
EDOUARD AUBERTIN, of No. 66, in the Bouelvard of Strasburg, in
the City of Paris, Gentleman, LEOPOLD BOBLIQUE, of No. 72, in the
same Boulevard, Chemist, and HYPOLITE LEPLAY, of Ruelle des
Meuniers, No. 4, at Bercy, in the City of Paris, Chemist, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN THE Manu-

page_text: FACTURE OF PHOSPHATE OF IRON, AND ITS APPLICATION TO THE PREPARATION OF
ALCALINE PHOSPHORUS, AND TO THE EXTRACTION OF PHOSPHORUS," to bo as
follows:-
Wo dissolvo phosphate of lime in chlorhydric or other acid, at our
choice, we also dissolve oxide or other form of iron in a similar acid;
and the two solutions thus prepared the insoluable matters are removed
from each; we mix the two solutions and saturate the excess of acid with
carbonate of lime, when a precipitate of phosphate of iron is formed,
which we collect; we employ the phosphate of iron either wet or dry in
the manufacture of ammonical salts; we place the phosphate of iron
in suspension in the night soil, sewage, or gas water, or in any other
liquid containing ammonia, when the phosphoric acid and the ammonia
combine and form a phosphate of ammonia soluble in water, the oxide
of iron precipitates itself in the form of sulphure of iron.
We sometimes distill these ammonical waters without any addition 1
of reactives; in this case that which is volatilised is carbonate of
ammoniac.
We also prepare alcaline phosphates by both a wet and a dry process;
by the first, or wet process, we boil the phosphate of iron in suspension
in water with potash or caustic soda, or sulphure of potassium or sodium, :
thus forming phosphate of potash or of soda, which dissolves in the water,
and an oxide of iron precipitates itself. In the second case phosphate
of soda and potash is formed, and insoluble sulphure of iron is
precipitated.
For the preparation of the alcaline phosphates of soda and potash by a
the dry process by means of phosphate of iron we dry the precipitate of
phosphate of iron obtained as before mentioned, and we calcine it in a
reverbatory furnace, either with potash or caustic soda, or with the
sulphate of potash or the sulphate of soda and coal, taking care to
employ three equivalents for these basos for one of phosphoric acid; the
product of this calcination washed with water gives an evaporation and
cristalisation, phosphate of potash, or phosphate of soda, according to the
baso employed; we also employ the phosphate of ammoniac for tho
preparation of phosphorus.
'
To obtain phosphorus we mix the phosphate of ammoniac obtained, as {
before mentioned, with a certain quantity of coal, which we wet or
saturate with chlorhydric or other acid capable of giving a solublo salt

page_text: with ammonia; we heat the mixture in retorts, raising the temperaturo
gradually; we obtain first liquid and then chlorhydrate of ammonia; and
afterwards, when the heat has arrived at a certain point, phosphorus is
distilled; we can also pass the vapour of chlorhydric acid over tho
5 mixture of phosphate of ammonia and cool at a certain temperature to
distill the chlorhydrate of ammonia.
SPECIFICATION in pursuance of the conditions of 'the Letters Patont,
filed by the said John Box, Edouard Aubertin, Leopold Boblique,
and Hypolito Leplay, in the Great Seal Patent Office on the 16th
July 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, JOHN Box,
of No. 20, Great George Street, Westminster, Civil Engineer, EDOUARD
AUBERTIN, of No. 66, in the Boulevard of Strasburg, in the City of
Paris, Gentleman, LEOPOLD BOBLIQUE, of No. 72, in the same Boulevard,
Chemist, and HYPOLITE LEPLAY, of Ruelle des Meuniers, at No. 4, at
Bercy, in the City of Paris, Chemist, send greeting.
:
WHEREAS Her most Excellent Majesty Queen Victoria, by Hor
Letters Patent, bearing date the Sixteenth day of January, in the year
of our Lord One thousand eight hundred and seventy-five, in, the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said John Box, Edouard Aubertin, Leopold
Boblique, and Hypolito Leplay, Her special licence that we, tho said.
John Box, Edouard Aubertin, Leopold Boblique, and Hypolito Leplay,
our executors, administrators, and assigns, or such others as wc, the
said John Box, Edouard Aubertin, Leopold Boblique, and Hypolito
Leplay, our executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
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 "Ix-'
PROVEMENTS IN THE MANUFACTURe of Phosphate OF IRON AND ITS APPLICATION TO
THE PREPARATION OF ALCALINE AND OTHER PHOSPHATES, AND TO THE EXTRACTION
OF PHOSPHORUS," upon the condition (amongst others) that we, the said
John Box, Edouard Aubertin, Leopold Boblique, and Hypolite Leplay,
our executors or administrators, by an instrument in writing under our,.

page_text: or one of our or their, or one of their hands and scals, 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 I, the said John Box, on behalf of myself and
the said Edouard Auberton, Leopold Boblique, and Hypolite Leplay, 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:—
We dissolve phosphate of lime in chlorhydric, nitric, or other acid at
our choice, we also dissolve hydrated oxide or other form of iron in
chlorhydric or nitric acid; after allowing the two solutions a certain time
to repose we remove the insoluble deposits from each; wo mix the two
solutions and saturate the excss of acid with carbonate of lime, when a
precipitate of phosphate of iron is formed, which we collect; wo employ
the phosphato of iron either wet or dry in the manufacture of ammoniacal
salts; we place the phosphate of iron in suspension in the night soil,
urine, sewage, or gas water, or in any other liquid containing ammonia,
when the phosphoric acid and the ammonia combine and form a
phosphate of ammonia soluble in water, the oxide of iron which was
combined with the phosphoric acid in the phosphato of iron precipitates
itself in the form of sulphure of iron.
We sometimes distil these ammoniacal waters without any addition
of reactives; in this case that which is volatilised is carbonate of ammonia.
We also replace the sulphuric acid and the sulphate of iron used in the
purification of lighting gas by the phosphate of iron, which also absorbs
the ammonia and the sulphuretted hydrogen which it contains. The
result being that we obtain by concentration crystalized phosphate of
ammonia.
We also prepare alkaline phoshates by both a wet and a dry process,
by the first or wet process we boil the phosphate of iron in suspension
in water with potash or caustic soda or sulphure of potassium or sodium,
thus forming phosphate of potash or of soda, which dissolves in the water
and an oxide of iron precipitates itself. In the second case phosphate
of soda and potash is formed, and insoluble sulphure of iron is precipi.
tated; both the precipitate of oxide of iron and the sulphure of iron

page_text: can again be employed, the first in making phosphate of iron, the second
in making sulphuric acid or sulphur at will.
For the preparation of the alkaline phosphates of soda and potash by
the dry process by means of phosphate of iron we dry the precipitate of
phosphate of iron obtained, as before mentioned, and we calcine it in a
reverberatory furnace either with potash or caustic soda, or with the
sulphate of potash or the sulphate of soda and coal, taking care to
employ three equivalents for these bases for one of phosphoric acid;
the product of this calcination washed with water gives an evaporation
and crystallization, phosphate of potash, or phosphate of soda, according
to the base employed. -
We employ the ferruginous phosphate of soda for the manufacture of
phosphate of magnesia. We dissolve the ferruginous phosphate of soda
in warm water; the oxide of iron contained in it is precipitated. We
dissolve chlorure of magnesia or sulphate in the same manner, mixing
the two solutions, which are strongly concentrated, crystalized phosphate
of magnesia is precipitated. We also employ the phosphate of ammonia
to the preparation of phosphorus.
To obtain phosphorus we mix the phosphate of ammonia obtained,
as before mentioned, with a certain quantity of coal, which we wet or
saturate with chlorhydric or other acid capable of giving a volatile salt
with ammonia; we heat the mixture, raising the temperature gradually;
we obtain first water and then chlorhydrate of ammonia; and afterwards,
when the heat has arrived at a certain point phosphorus is distilled;
we can also pass the vapour of chlorhydric acid over the mixture of
phosphate of ammonia and coal at a certain temperature to distil the
chlorhydrate of ammonia.
In witness whereof, I, the said John Box, on behalf of myself
and the said Edouard Aubertin, Leopold Boblique, and Hypolite
Leplay, have hereunto set my hand and scal, this Twelfth day
of July, in the year of our Lord One thousand eight hundred and
BATAN fion
.