Improvements in the Manufacture of Explosives.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Explosives.
GEORGE GUILLAUME ANDRÉ of Glenlean, Argyllshire, and CHARLES
HERBERT CURTIS of 74 Lombard Street, London, Explosive Manufacturers do
hereby declare the nature of this invention to be as follows:-
Our invention is designed to provide a safety or flameless explosive especially
useful in fiery or dusty mines. Our invention is not liable to be exploded by fire,
flame, friction or blows but requires explosion by detonation, and it is particularly
suitable for explosion by a detonator of the character and strength of the detonator
known in the trade as "No. 7 detonator."
Our invention consists in producing an explosive compound consisting of wood-
meal or other suible material of a like character, with ammonium nitrate and
potassium nitrate approximately in the proportions hereinafter mentioned. We
find by experience and experiment that the best proportions for thus making a
safety flameless explosive of great power is 12% of woodmeal, or other material
of a like character, 85% of ammonium nitrate and 3% potassium nitrate, and
these proportions may be subject to slight variations without departing from our
invention.
These materials are mixed or incorporated in a drum with wooden balls in the
usual manner without the addition of any liquid, or in other suitable manner, and
the result is an explosive having the advantage of being a safety or flameless
explosive suitable for use in fiery and dusty mines, and of very strong power.
Dated the 6th day of December 1895.
THEO.
MCKENNA,
17 and 18 Basinghall Street, E.C., Agent.
Improvements in the Manufacture of Explosives.
We GEORGE GUILLAUME ANDRÉ of Glenlean Argyllshire and CHARLES
HERBERT CURTIS of 74 Lombard Street London Explosive Manufacturers 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 :-
Our invention is designed to provide a safety or flameless explosive especially
useful in fiery or dusty mines. Our invention is not liable to be exploded by fire
flame friction or blows but requires explosion by detonation, and it is particularly
suitable for explosion by a detonator of the character and strength of the detonator
known in the trade as N. 7 detonator.
Our invention consists in producing an explosive compound consisting of wood-
meal or other suitable material of a like character with ammonium nitrate and
potassium nitrate approximately in the proportions bereinafter mentioned. We
find by experience and experiment that the best proportions for thus making a
safety flameless explosive of great power is 12% of woodmeal or other material

page_text: of a like character 85% of ammonium nitrate and 3% of potassium nitrate, and
these proportions may be subject to slight variations without departing from our
invention.
These materials are mixed or incorporated in a drum with wooden balls in the
usual manner without the addition of any liquid, or in any other suitable manner,
and the result is an explosive having the advantage of being a safety or flameless
explosive suitable for use in fiery and dusty mines and of very strong power.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
:-
A safety or flameless explosive compound consisting of woodmeal or other
suitable material of a like character with ammonium nitrate and potassium nitrate
substantially in the proportions herein before described.
THEO. MCKENNA,
Agent.