A. New Explosive.
Year: 1893

page_text: Date of Application, 19th Dec., 1893
Complete Specification Left, 18th Sept., 1894-Accepted, 3rd Nov., 1894
PROVISIONAL SPECIFICATION.
A. New Explosive.
I, HAROLD BOYD, of 67, Wellesley Street, in the Town of Calcutta, in the
Empire of India, Manufacturing Chemist, do hereby declare the nature of this
invention to be as follows:-
My invention is an improved explosive compound, which is prepared substantially
as follows:-
I take finely ground oxide of iron in the form of waste oxide, which has passed
through the retorts at gasworks and become impregnated with sulphurous and
other gases, or which possesses the like qualities however obtained, and mix it with
powdered kerosene shale, nitrate of potash, wood dust, nitrate of baryta and
commercial sulphur, in the following proportions.
PROVISIONAL SPECIFICATION.
A. New Explosive.
I, HAROLD BOYD, of 67, Wellesley Street, in the Town of Calcutta, in the
Empire of India, Manufacturing Chemist, do hereby declare the nature of this
invention to be as follows:-
My invention is an improved explosive compound, which is prepared substantially
as follows:-
I take finely ground oxide of iron in the form of waste oxide, which has passed
through the retorts at gasworks and become impregnated with sulphurous and
other gases, or which possesses the like qualities however obtained, and mix it with
powdered kerosene shale, nitrate of potash, wood dust, nitrate of baryta and
cominercial sulphur, in the following proportions.
Oxide of iron
Nitrate of potash
Powdered kerosene shale
Wood dust-
Commercial sulphur
Nitrate of baryta
-
-
4 parts by weight.
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These materials are well mixed together in a dry state by hand or by any
suitable machine, until all are well distributed and evenly mixed. The compound
may be used in the form of loose powder, or compressed into cartridge forms by
any known method. It is fired by means of an ordinary fuse, no special detonator
being required.
Dated this 19th day of December 1893
COMPLETE SPECIFICATION.
A New Explosive.
I, HAROLD BOYD, of No. 67, Wellesley Street, Calcutta, in the Empire of
India, Manufacturing Chemist, 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 :-
An explosive compound according to this invention is prepared as follows:-
I take finely ground oxide of iron in the form of waste oxide which has passed
through the retorts at gasworks and become impregnated with sulphurous and
other gases, or which possesses the like qualities however obtained, and mix it with
powdered kerosene shale, nitrate of potash, wood dust, nitrate of baryta, and
commercial sulphur, in the following proportions :—

page_text: These materials are well mixed together in a dry state by hand or any suitable
machine until all are well distributed and evenly mixed.
The compound may be used in the form of loose powder or compressed into
cartridges by any known method.
. It is fired by means of an ordinary fuse, no special detonator being required.
This compound possesses the following advantages:
(a) That it can be exploded by means of a common fuse.
That it does not require any detonating or other caps or primers to
explode it.
That it cannot be exploded by concussion or friction.
(d) That it will not explode in the open air, but only when closely confined.
(e) That when blasting it does not scatter the fragments but the whole mass of
rock surrounding it is simply broken or shattered with very little displacement.
That there is very little smoke and no flame or fumes generated.
(9) That it developes no dangerous qualities by keeping, and climatic changes
have no effect on it.
(h) That being a non-frictional and non-volatile explosive substance it is free
from any of the dangerous drawbacks usually found in connection with the
manufacture of explosive compounds.
I would have it understood that I do not restrict myself to the exact properties.
above stated of the materials or substances above mentioned, which proportions may
be varied without departing from the essence of the invention.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The use in the manufacture of explosives of the substance consisting of oxide
of iron which has passed through the retorts of gasworks and become impregnated
with sulphurous and chemical gases, or which has otherwise become so impregnated.
2. The use in the manufacture of explosives of finely ground oxide of iron or
some similar substance which has passed through the retorts at gasworks, or
otherwise possessing the like qualities, in combination with nitrate of potash,
powdered kerosene shale, commercial sulphur, wood dust, and nitrate of baryta, in
or about the proportions above mentioned.
3. The use in the manufacture of explosives of oxide of iron or other like
substance which has passed through the retorts of gasworks or its equivalent in
combination with nitrates, kerosene shale, and other ingredients.
4. The combination of the materials or substances above-mentioned as an
explosive compound.
Dated this 18th dew of Sontember 1894.