IMPROVEMENTS IN THE MAnufacture of AMMONIACAL DAFTS
Year: 1874

page_text: LETTERS PATENT to Henry Young Darracott Scott, of Ealing, in the
County of Middlesex, Major-General, C.B., for the Invention of
"IMPROVEMENTS IN THE MAnufacture of AMMONIACAL DAFTS,
Sealed the 21st December 1874, and dated the 9th October 1874.
PROVISIONAL SPECIFICATION left by the said Henry Young Darracott
Scott at the Office of the Commissioners of Patents, with his
Petition, on the 9th October 1874.
I, HENRY YOUNG DARRACOTT SCOTT, of Ealing, in the County of
Middlesex, Major-General, C.B., do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN THE MANUFACTURE OF AMMONIACAL
SALTS," to be as follows:
The object of this Invention is to obtain salts of ammonia from
ammoniacal phosphate of magnesia in an economical manner so that
after the extraction of the ammonia from that substance the phosphate
of magnesia may be again used for the extraction of fresh portions of
ammonia from gas liquor, decomposed urine, and other ammoniacal
lianide

page_text: In carrying out my Invention I take the ammoniacal phosphate in
the pasty condition as removed from the liquid after treatment and add
thereto muriatic or sulphuric acid in proportion to the ammonia present
in the compound. After allowing the mixture to digest I drain off the
liquid and evaporate it to dryness.
The resulting compound will consist of chloride of ammonium mixed
with a comparatively small quantity of phosphate salts, and may then
be made available for the manufacture of manure, or by distillation of
the ammoniacal salt for other purposes in the arts. By this process I
consume but a small quantity of phosphate of magnesia in obtaining the
ammonia from ammoniacal liquids, for the larger and undissolved portion
of the phosphate of magnesia becomes at once available without further
preparation for the extraction of fresh portions of ammonia from such
liquids. This economy in the use of phosphate of magnesia becomes of
great importance in dealing (for instance) with the urine and gas liquor
of large towns, in which cases the quantity of ammoniacal phosphate of
magnesia which would result from the mere treatment of the liquid with
phosphate of magnesia would prove difficult to dispose of, the ammonia
in the ammoniacal phosphate never reaching 7 per cent.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Young Darracott Scott in the Great Seal
Patent Office on the 8th April 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
YOUNG DARRACOTT SCOTT, of Ealing, in the County of Middlesex,
Major-General, C.B., send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of October, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Henry Young Darracott Scott, Her
special licence that I, the said Henry Young Darracott Scott, my
executors, administrators, and assigns, or such others as I, the said
Henry Young Darracott Scott, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and

page_text: at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United King-
dom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN THE Manufacture of AMMONIACAL
SALTS," upon the condition (amongst others) that I, the said Henry
Young Darracott Scott, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said Inven-
tion, 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 Henry Young Darracott Scott, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
and by the following statement (that is to say) :-
The object of this Invention is to obtain salts of ammonia from
ammoniacal phosphate of magnesia in an economical manner so that
after the extraction of the ammonia from that substance the phosphate
of magnesia may be again used for the extraction of fresh portions of
ammonia from gas liquor, decomposed urine, and other ammoniacal.
liquids of like nature.
In carrying out my Invention I take the ammoniacal phosphate in the
pasty condition to which it has been brought by operating on the
ammoniacal liquor, and having removed it from the liquid I add thereto
muriatic or sulphuric acid in chemical proportion to the ammonia
present in the compound. The process of extracting takes place most
perfectly and quickly at boiling temperature, and after allowing the
mixtures to digest I drain off from the phosphate of magnesia the super-
natant liquid and evaporate it to dryness. I sometimes use both muriatic
and sulphuric acid for the purpose..
With the view of obtaining as strong a solution of muriate or sulphate
of ammonia as possible I may employ the process of lixiviation practised
in the manufacture of alum, the lixivium flowing from one tank to
another.
The resulting compound will consist of muriate or sulphate of

page_text: other salts, and may then be made available for the manufacture of
manure or for other purposes in the arts. By this process I consume
but a small quantity of phosphate of magnesia in obtaining the ammonia
from ammoniacal liquids, for the larger and undissolved portion of the
phosphate of magnesia becomes at once available without further
preparation for the extraction of fresh portions of ammonia from such
liquids. This economy in the use of phosphate of magnesia becomes of
great importance in dealing (for instance) with the urine and gas liquor
of large towns, in which cases the quantity of ammoniacal phosphate of
magnesia which would result from the mere treatment of the liquid with
phosphate of magnesia would prove difficult to dispose of, the ammonia
in the ammoniacal phosphate scarcely reaching seven per cent. Never-
theless for the sake of having in the resulting manure such an amount
of phosphoric acid as is proportioned to the ammonia present, and
whereby the latter substance is made more efficacious as a fertilizer, I
may sometimes employ an excess of muriatic or sulphuric acid, or
both.
Having now described my Invention of "Improvements in the Manu-
facture of Ammoniacal Salts," and having explained the manner of
carrying the same into effect, I claim as the Invention secured to me by
Letters Patent as aforesaid, the extraction of ammonia from ammoniacal
phosphate of magnesia by means of muriatic or sulphuric acid, as herein
set forth, so that the phosphate of magnesia which results from the
process may be used again and again for the removal of ammonia from
fresh quantities of gas liquor, decomposed urine, or other ammoniacal
liquids of like nature.
In witness whereof, I, the said Henry Young Darracott Scott,
have hereunto set my hand and seal, the Seventh day of April,
in the year of our Lord One thousand eight hundred and seventy-