IMPROVEMENTS IN TREATING SOLUTIONS CONTAINING COMPOUNDS OF AMMONIA IN ORDER TO OBTAIN USEFUL PRODUCTS THEREFROM "
Year: 1883

page_text: LETTERS PATENT to Alexander MoDougall, of Penrith in the County of
Cumberland, Esquire, for an Invention of "IMPROVEMENTS IN TREATING
SOLUTIONS CONTAINING COMPOUNDS OF AMMONIA IN ORDER TO OBTAIN USEFUL
PRODUCTS THEREFROM
"
PROVISIONAL SPECIFICATION left by the said Alexander McDougall at the
Office of the Commissioners of Patents on the 17th August 1883.
ALEXANDER MCDOUGALL of Penrith in the County of Cumberland, Esquire,
"IMPROVEMENTS IN TREATING SOLUTIONS CONTAINING COMPOUNDS OF AMMONIA IN
ORDER TO OBTAIN USEFUL PRODUCTS THEREFROM'
"
This Invention is an extension or developement of the Invention described in
the Specification of the Patent granted to me as of the 14th January 1882,
N° 202. I have found by experiment that I can obtain a valuable manure by the
use of acid phosphates or what are commonly called Superphosphates for the
decomposition of the solutions and the preservation of the ammonia which they
contain. I use these acid phosphates in various ways to obtain my object as
circumstances may render most convenient; as examples I may state the following
methods:-
First, I add Acid Phosphates to the solutions containing compounds of ammonia
until after well stirring together an acid reaction is obtained, and then dry down
the mixture to a solid state by exposure or the application of heat.
Second; I mix acid Phosphates with granulated peat or other organic substance
reduced to small particles and add the solutions containing ammonia to the mixed
mass, which I prefer to use in large quantity in proportion to the solution added at
any one time.
The damped mass is exposed to air either at the ordinary temperature or heated
by any of the usual drying appliances.
I also prefer to acidulate the organic substances before mixing with the Acid
Phosphates.

page_text: SPECIFICATION in pursuance of the conditions of the Lettera Patent filed
by the said Alexander McDougall in the Patent Office on the 16th February
1884.
ALEXANDER MCDOUGALL of Penrith in the County of Cumberland Esquire
"IMPROVEMENTS IN TREATING SOLUTIONS CONTAINING COMPOUNDS OF AMMONIA IN
ORDER TO OBTAIN USEFUL PRODUCTS THEREFROM
"
This Invention is an extension or developement of the Invention described in
the Specification of the Patent granted to me as of the fourteenth January One
thousand eight hundred and eighty two N° 202.
I have found by experiment that I can obtain a valuable manure by the use of
acid phosphates or what are commonly called superphosphates for the decomposition
of the solutions and the preservation of the ammonia which they contain. I use
these acid phosphates in various ways to obtain my object as circumstances may
render most convenient, as examples, I may state the following methods.
First I add acid phosphates to the solutions containing compounds of ammonia
until after well stirring together an acid reaction is obtained and then I dry down
the mixture to a solid state by exposure or the application of heat.
Second. I mix acid phosphates with granulated peat or other organic substante
reduced to small particles and add to this mixed mass the solutions containing
ammonia I prefer to use the said mixed mass in large quantity in proportion to
the solution added at any one time so that the said mass is only damped thereby.
The damped mass is exposed to air either at the ordinary temperature or it is
heated by any suitable drying appliances.
.1 also prefer to acidulate the organic substances before mixing with the acid
phosphates by adding say for example one pound of commercial sulphuric acid or
muriatic acid to about ten pounds of the granulated organic substance used to mix
with the superphosphates.
• Having now described and particularly ascertained the nature of my said
Invention and the manner in which the same is or may be used or carried into
effect. I would observe in conclusion that what I consider to be novel and original
and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters Patent is.
Treating solutions containing compounds of ammonia by acid phosphates or
superphosphates substantially as and for the purpose hereinboforo described.
In witness whereof I the said Alexander M'Dougall have to tliis my Specification
set my hand and seal this fifteenth day of February, One thousand eight hundred
and eighty-four.
ALEXANDER MCDOUGALL (L.S.)