tma TV RAGING GATO
Year: 1874

page_text: LETTERS PATENT to William George Sharp Mockford, of 57, Old
Broad Street, in the City of London, Manufacturing Chemist, for
f "Tutma TV RAGING GATO "
Sealed the 24th July 1874, and dated.the 25th April 1874.
PROVISIONAL SPECIFICATION left by the said William George Sharp
Mockford at the Office of the Commissioners of Patents, with his
Petition, on the 25th April 1874.
I, WILLIAM GEORGE SHARP MOCKFORD, of 57%, Old Broad Street,
in the City of London, Manufacturing Chemist, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN TREATING GUANO," to..
be as follows:-
"
. This Invention has for its object improvements in treating guano.
The description of guano known in the trade as "Megillone's guano
has serious defects, which it is the object of this Invention to overcome.
A guano to meet perfectly the requirements of the agriculturist should
be rich both in phosphates and in nitrogen, and it should be in such a;

page_text: condition and in such a uniform state of division that it will work well
in the machine drill. Now the Megillone's guano although containing
a high per-centage of phosphates is deficient in nitrogenous matter;
and it is in a rough condition, varying much in size, and therefore
unsuited in the raw state to be applied by the machine drill.
To remedy these defects I treat this guano in the following manner: —
I first reduce the crude Megillone's guano to a fine state of division by
grinding, and then I adjust the per-centage of nitrogen by the addition
of nitrate of soda, also in a state of powder; and in a mixer I thoroughly
incorporate the nitrate with the guano. Or in some cases I take the
nitrate of soda in a state of solution before it has been boiled down and
crystallized, and mix it with the crude guano. The compound is then
thoroughly dried in a stove, and is afterwards ground to a fine powder.
Equal parts of guano and dry nitrate of soda will usually be found
suitable proportions; but this will vary more or less, according to the
per-centage of nitrogen found in the crude guano.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William George Sharp Mockford in the Great Seal 2
Patent Office on the 24th October 1874. -
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
GEORGE SHARP MOCKFORD, of 57%, Old Broad Street, in the City of
London, Manufacturing Chemist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 2
Letters Patent, bearing date the Twenty-fifth day of April, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto the said William George Sharp Mockford, Her
special license, that I, the said William George Sharp Mockford, my a
executors, administrators, and assigns, or such others as I, the said
William George Sharp Mockford, my executors, administrators, and
assigns, should at any time agree with and no others, from time to

page_text: 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 "IMPROVEMENTS IN TREATIng Guano,”
upon the condition (amongst others) that I, the said William George
Sharp Mockford, 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 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 William George Sharp Mockford, do
hereby declare the nature of the said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement thereof, that is to say :—
"
This Invention has for its object improvements in treating guano.
The description of guano known in the trade as "Megillone's guano
has scrious defects, which it is the object of this Invention to overcome.
A guano to meet perfectly the requirements of the agriculturist should
bo rich both in phosphates and in nitrogen, and it should be in such a
condition and in such an uniform state of division that it will work well
in the machine drill. Now the Megillone's guano although containing
a high per-centage of phosphates is deficient in nitrogenous matter;
and it is in a rough condition, varying much in size, and therefore
unsuited in the raw state to be applied by the machine drill.
To remedy these defects I treat this guano in the following manner:—
I first reduce the crude Megillone's guano to a fine state of division by
grinding, and then I adjust the per-centage of nitrogen by the addition
of nitrate of soda, also in a state of powder, and in a mixer I thoroughly
incorporate the nitrate with the guano.
The best method of treating Megillone's guano when the processes are
conducted in this country I believe to be as follows:-To take the crude
guano as it is imported and dry it in a stove by spreading it on a tile
floor heated with flues underneath. When the moisture is reduced to
two or three per cent. it is sufficiently dry. The guano should then be
crushed with edge runners until it passes through a screen with holes

page_text: 32
from 1 to 3 of an inch linear. The guano is then ready to mix with
the nitrate of soda. The quantity of nitrate should be such as to raise
the per-centage of nitrogen to about 10%. This will require, assuming
the guano to be of average quality, about equal parts of guano and
nitrate of soda. The nitrate of soda should be ground to a powder
previous to mixing it with the guano. I employ for this purpose
conical stone mill, or a Carr's disintegrator may be employed; and
this apparatus is also suitable for pulverising the guano. The guano
and the nitrate, both having been obtained in a finely divided state, are;
mixed together in bulk by hand labour, and are then raised by an
elevator into a rotating screen through which the material passes. In
this way an intimate mixture is obtained, and the prepared guano is
then ready for the market. Or in some cases I take the nitrate of soda
in a state of solution before it has been boiled down and crystallised,
and mix it with the crude guano. The compound is then thoroughly
dried in a stove, and is afterwards ground to a fine powder. This
process is more applicable for the treatment of the guano before it is
imported than for use in this country.
Equal parts of guano and dry nitrate of soda will usually be found.
suitable proportions, but this will vary more or less according to the
per-centage of nitrogen found in the crude guano.
Guano from other sources, but of a similar nature to the Megillone's
guano, may be similarly treated.
:
But I desiro to confine my claim to the treatment of Megillone's;
and I claim the treatment of Megillone's guano to adjust the per-
centage of nitrogen by the addition of nitrate of soda, and to reduce the
guano to a state to be deposited by the machine drill, all substantially
as herein described.
In witness whercof, I, the said William George Sharp Mockford,
have hereunto set my hand and seal, this Twenty-third day of
October, in the year of our Lord One thousand eight hundred
and seventy-four.