Improvements in Explosives.
Year: 1897

page_text: Improvements in Explosives.
I, HAROLD BOYD, of "Fair View," Wigginton, Tamworth, in the County of
Stafford, Mining Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to an explosive mixture or compound which is intended
especially for mining purposes, the chief object being to obtain a powerful and
safe blasting explosive that can be fired without a detonator and which after
firing will not leave behind poisonous or noxious fumes, which are particularly
objectionable when using ordinary blasting explosives in confined places.
An explosive of this description has been previously set forth in the Specification
of my prior British Patent No. 10403 of 1896 but since the date of such Patent
I have discovered that an explosive of such description can be obtained by mixing
together ingredients other than those set forth in the Specification of the afore-
said prior Patent.
According to my present invention I employ the following ingredients in or
about the proportions stated:-
Nitrate of soda
Sulphur
Picrate of Ammonia
Bichromate of potash
Peat dust
Commercial lime
-
7 parts by weight
4 parts by weight
2 parts by weight
1 part by weight
1 part by weight
1 to 3 parts by weight
The said ingredients are mixed together with cotton seed oil and compressed
into cartridges for general mining purposes.
I do not confine myself to the exact proportions of the ingredients above stated
as such proportions may be varied according to the strength of explosive required.
The use of the said explosive is not confined to blasting purposes alone as it may,
also be used for ballistic purposes.
"
In place of the peat dust I may employ sawdust, fossil meal, powdered mica,
or any other suitable material that will serve as a buffer." Likewise, instead
of the lime, I may employ Irish bog ore, or other hydrated oxide of iron especially
oxide of iron that has been used in the purifiers of gas works.
Dated this 20th day of December 1897.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: Improvements in Explosives.
I, HAROLD BOYD, of "Fair View,” Wigginton, Tamworth, in the County of
Stafford, 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;
This invention relates to an explosive mixture or compound which is intended
especially for mining purposes, the chief object being to obtain a powerful and
safe blasting explosive that can be fired without a detonator and which after
firing will not leave behind poisonous or noxious fumes, which are particularly
objectionable when using ordinary blasting explosives in confined places.
According to my invention I employ the following ingredients in or about the
proportions stated:-
Nitrate of soda
Sulphur
Picrate of Ammonia
Bichromate of potash
Peat dust :
Commercial lime
1
=
7 parts by weight
4 parts by weight
2 parts by weight
1 part by weight
1 part by weight
1 to 3 parts by weight
The said ingredients are mixed together with cotton seed oil and compressed
into cartridges for general mining purposes.
I do not confine myself to the exact proportions of the ingredients above stated
as such proportions may be varied according to the strength of explosive required.
The use of the said explosive is not confined to blasting purposes alone as it may
also be used for ballistic purposes.
"
In place of the peat dust I may employ sawdust, fossil meal, powdered mica,
or any other suitable material that will serve as a buffer." Likewise, instead
of the lime, I may employ Irish bog ore, or other hydrated oxide of iron, especially
oxide of iron that has been used in the purifiers of gas works,
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. An explosive composition consisting essentially of the following ingredients
viz.nitrate of soda, sulphur, picrate of ammonia and bichromate of potash
mixed together in proportions substantially as described.
2. The addition to the aforesaid explosive composition in proportions sub-
stantially as described, of substances such as peat dust, sawdust, fossil meal or
powdered mica and of commercial lime, Irish bog ore or other hydrated oxide of
iron for the purposes specified.
3. An explosive consisting of the herein described ingredients mixed together
with cotton seed oil and compressed into cartridges for the purposes specified.
Dated this 17th day of September 1898.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.