Year: 1896

page_text: I HAROLD BOYD of No. 177, Bromsgrove Street Birmingham in the County
of Warwick Mining Engineer do hereby declare the nature of this invention to be
as follows:-
My invention relates to an improved explosive compound which is prepared
substantially as follows,
I take Irish bog ore which has been finely pulverized and I mix it with nitrate
of potash, commercial sulphur nitrate of baryta picric acid and wood dust in or
about the following proportions-
Nitrate of potash
Commercial sulphur
Irish bog ore
Nitrate of baryta -
Picric acid
Wood dust
7 parts by weight.
322
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These materials are well mixed together in a dry state either 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 13th day of May 1896.
EDWD. J. PAYNE & SON,
104, Colmore Row, Birmingham, Patent Agents for the Applicant.
I, HAROLD BOYD of 177, Bromsgrove Street Birmingham in the County of
Warwick Mining Engineer 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:-
My invention relates to an improved explosive compound which is prepared
substantially as follows-
I take Irish bog ore, by preference or oxide of iron or ordinary commercial lime
which has been carefully dried and finely pulverized or ground or any other
substance or substances having like absorbent qualities however obtained and
Priced

page_text: I mix it with nitrate of potash, commercial sulphur, nitrate of baryta, picric acid,
and wood dust, in or about the following proportions-
-
Nitrate of potash
Commercial sulphur
7 parts by weight.
Irish bog ore
Nitrate of baryta
Picric acid
3
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Wood dust
When oxide of iron, or lime is used instead of bog ore the proportion will be
2 parts in relation to the above formula of quantities.
These materials are well mixed together in a dry state either by band 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
cartridges by any known method. It is fired by means of an ordinary fuse no
special detonator being required for the purpose.
My object in using the Irish bog ore, or oxide of irou or lime is on account of
the special qualities which I find they possess as absorbents of chemical gases and
for the reason that I have proved by experience that these substances possess the
power when mixed with explosive chemicals of absorbing the waste fume or fumes
which is always present after firing explosive compounds either in deep mines or in
open quarry work.
My improved explosive compound as above formulated possesses the following
advantages.
(a.) That it can be exploded by meaus of a common fuse.
(b.) That it does not require any detonating or other caps or primers to
explode it.
(c.) 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.
(f.) 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 herein mentioned or to the proportions,
which may be varied without departing from the essence of my said 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,
Firstly. The use in the mauufacture of explosives of the substances consisting
of carefully dried and finely pulverized Irish bog ore or finely ground oxide of
iron, or lime or other similar or suitable substances in combination with nitrate of
potash commercial sulphur nitrate of baryta picric acid and wood dust in or about
the proportions herein described.
Secondly. The combination of the materials or substances herein described as
an explosive compound.
Dated this 92nd day of T.1 1900
EDWD. J. PAYNE & SON,
Warwick Chambers, 104 Colmore Row, Birmingham,
Patent Agents for the Appl.can:.