Improvements in the Manufacture of Nitro-glycerine Explosives.
Year: 1896

page_text: Date of Application, 5th Aug., 1896
Complete Specification Left, 24th Apr., 1897-Accepted, 5th Aug., 1897
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Nitro-glycerine Explosives.
I, CHRISTIAN EMIL BICHEL, of Nobelshof, in the City of Hamburg, in the Empire
of Germany, Manager, do hereby declare the nature of this invention to be as
follows:-
The requirements as to the safety of so called safety explosives have of late been
made more stringent, and great efforts have consequently been made to improve the
safety of known explosive compounds by replacing certain substances in such
compounds by others not previously employed therein.
My experiments have shown, that chromates, bichromates, permanganates, and
manganese are suitable to be either partly or entirely substituted for nitrates as
heretofore employed in nitro-glycerine explosives. The effect of this substitution is,
that the safety and the explosive power of nitro-glycerine explosives are materially
increased.
The introduction of bichromates and like substances in nitro-glycerine explosive
compounds constitutes an important .novelty and a considerable improvement.
Dated this 5th day of August 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.
Improvemen
the Manufacture of Nitro-glycerine Explosives.
I, CHRISTIAN EMIL BICHEL, of Nobelshof, in the City of Hamburg, in the Empire
of Germany, Manager, 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:-
The requirements as to the safety of so called safety explosives have of late been
made more stringent, and great efforts have consequently been made to improve the
safety of known explosive compounds by replacing certain substances in such
compounds by others not previously employed therein.
My experiments have shown, that chromates, bichromates or permanganates of the
alkalis are suitable to be partly substituted for nitrates as heretofore employed in the
"dope" (a powdered admixture such as oxygen carrying bodies) of the nitro-
glycerine explosives. Extra good results are obtained by using about 5 per cent. of
the above mentioned salts as a partial substitute for the nitrates. The effect of this
substitution is, that the safety and the explosive power of nitro-glycerine explosives
are materially increased.

page_text: The substitution of the nitrates by the chromates, bichromates or permanganates
of the alkalis may be made preferably in those nitro-glycerine explosives which
contain nitro-glycerine saltpetre, and wood-dust, flour, or middlings, in such
proportion as to render the explosive safe so as to avoid ignition of fire damp or coal
dust upon explosion.
It has become evident that the addition of the said salts permits a material
increase of the percentage of nitro-glycerine, and thereby of the explosive power of
the explosive, without reducing its safety. This addition therefore acts in a double
manner, that is to say, it increases the explosive power as well as the safety of the
explosive.
. For this reason the introduction of the chromates and like compounds of the
alkalis in nitro-glycerine explosive compounds constitutes an important novelty and
a considerable improvement.
As an example of such an improved explosive the following composition is given, in
which, however, the added bichromate of potassium may be replaced by chromate or
permanganate of potassium; and the percentage of the saltpetre and wood-dust, or
flour may vary according to the required quality, or nature, of the explosive:
30% nitro-glycerine,
28.5% saltpetre,
36.5% wood-dust, flour, or middlings, and
5% bichromate of potassium.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
1. The production of nitro-glycerine explosives by partially replacing the nitrates
in the "dope" of such explosive compounds by about 5% of the chromates,
bichromates, or permanganates of the alkalis, substantially as and for the purpose
set forth.
2. A nitro-glycerine explosive in which the nitrates of the "dope" are partially
replaced by about 5% of the chromates, bichromates, or permanganates of the
alkalis, substantially as and for the purpose set forth.
D
1100
HASELTINE, LAKE &-Co.,.
45 Southampton Buildings, W.C., Agents for the Applicant..