Improvements in the Treatment or Preparation of Nitrate of Ammonium.
Year: 1889

page_text: Date of Application, 15th Dec., 1889
Complete Specification Left, 7th Oct., 1890-Accepted, 8th Nov., 1890
Improvements in the Treatment or Preparation of Nitrate
of Ammonium.
We, THE ROBURITE EXPLOSIVES COMPANY LIMITED of 103 Cannon Street in the
City of London and CARL ROTH of Charlottenburg in the Empire of Germany and
WILLIAM JAMES ORSMAN of Gathurst in the County of Lancaster Chemists do hereby
declare the nature of this invention to be as follows:--
This invention relates to the treatment or preparation of nitrate of ammonium for
the purpose of neutralising or overcoming the hygroscopic properties of the nitrate
by means of a substance prepared as hereinafter described this being especially
advantageous when the said nitrate is employed in the manufacture of explosives.
In order to overcome or neutralise the hygroscopic properties of nitrate of
ammonium according to our invention the said substance is prepared by dissolving
nitro-cellulose by the aid of heat if necessary in the various nitro and chlor nitro
compounds of benzene or of the benzene series of hydro carbons and their derivatives
or of other hydrocarbons obtained by the destructive distillation of coal tar or as
mixture of any of the foregoing compounds.
By means of this substance we protect either the single crystals of nitrate of
ammonium or larger coherent pieces of this substance against the influence of
moisture.
The nitrate of ammonium is first thoroughly dried by any suitable method then
heated to about 80° Centigrade and the dissolved nitro cellulose in a melted state is
poured on it the mixture being thoroughly stirred and then allowed to cool, or the
large pieces of nitrate of ammonium thoroughly dried are placed in the melted
dissolved nitro cellulose so as to absorb the latter substance.
Dated thin 19th dow of Dreamber 1980
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in the Treatment or Preparation of Nitrate
of Ammonium.
We, THE ROBURITE EXPLOSIVES COMPANY LIMITED of 103 Cannon Street in the
City of London, CARL ROTH of Charlottenburg in the Empire of Germany and
WILLIAM JAMES ORSMAN of Gathurst in the County of Lancaster, Chemists do
hereby declare the nature of this invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:-
This invention relates to the treatment or preparation of nitrate of ammonium for
the purpose of neutralizing or overcoming the hygroscopic properties of the said
nitrate by means of a substance prepared as hereinafter described this being
especially advantageous when the said nitrate is employed in the manufacture of
explosives.
In order to overcome or neutralize the hygroscopic properties of nitrate of
ammonium according to this invention the said substance is prepared by dissolving
nitro-cellulose (by the aid of heat if necessary) in the various nitro, and chlor-nitro,
compounds of benzene or of the benzene series of hydrocarbons and their derivatives
or of other hydrocarbons obtained by the destructive distillation of coal tar or a
mixture of any of the foregoing compounds.
By means of this substance we protect either the single crystals of nitrate of

page_text: ammonium
moisture.
or larger coherent pieces of this substance against the influence of
The nitrate of ammonium is first thoroughly dried by any suitable method then
heated to about 80° Centigrade and the nitro-cellulose in a dissolved state is poured
on it the mixture being thoroughly stirred and then allowed to cool or the large pieces
of nitrate of ammonium thoroughly dried are placed in the solution-of nitro-cellulose
so as to absorb the latter substance.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
The treatment or preparation of nitrate of ammonium with nitro-cellulose which
has been dissolved in nitro-, or chlor-nitro, compounds of the products of the
distillation of tar for the purpose hereinbefore described.
Dated this 7th day of October 1890.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, Agents.