Improvements in the Manufacture of Dynamite.
Year: 1889

page_text: Date of Application, 25th June, 1889
:
Complete Specification Left, 24th Mar., 1890-Accepted, 10th May, 1890
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Dynamite.
I, CARL OLOF LUNDHOLM, of the Ardeer Factory, in the County of Ayr, North
Britain, Chemist to Nobel's Explosives Company, Limited, do hereby declare the
nature of this Invention to be as follows, that is to say :-
My said Invention relates to a kind of dynamite which may be termed "Black
Dynamite" and which is formed by using as an absorbent of the nitro-glycerine a
carbonized silicious earth formed by carbonizing a silicious earth naturally containing
sufficient organic or carbonaceous matter or by carbonizing a natural silicious earth,
such as kieselguhr, with which organic or carbonaceous matter has been artificially
mixed or combined.
The object of my Invention is to convert the black dynamite into a so-called
"flaneless" explosive; and I effect this by kneading the black dynamite with water
of which it can be made to absorb a large proportion without causing exudation of
the nitroglycerine. Or I intimately mix or combine nitrate of ammonia, either in the
condition of a dry powder or as a strong solution, with the black dynamite. The
weight of nitrate of ammonia added may about equal that of the black dynamite
itself without reducing its strength; whilst more nitrate of ammonia may be used in
some cases in which it may be desirable to very completely avoid flame.
Dated this Twenty-fourth day of June 1889.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Dynamite.
I, CARL OLOF LUNDHOLM of the Ardeer Factory, in the County of Ayr, North
Britain, Chemist to Nobel's Explosives Company, Limited, 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, that is to
say:
My said Invention relates to a kind of dynamite which may be termed "Black
Dynamite" and which is formed by using as an absorbent of the nitroglycerine, a
carbonised silicious earth formed by carbonising a silicious earth naturally containing
sufficient organic or carbonaceous matter, or by carbonising a natural silicious earth,
such as kieselguhr, with which organic or carbonaceous matter has been artificially
mixed or combined.
66
The object of my present Invention is to convert the black dynamite into a
so-called Hameless" explosive; and I effect this by kneading the black dynamite
with water of which it can be made to absorb a large proportion without causing
exudation of the nitroglycerine. The weight of water combined in this way with
the black dynamite may be varied in different cases according to the degree of
flamelessness desired; but for ordinary mining purposes the weight of water may be
about one tenth of that of the black dynamite. Or I intimately mix or combine
nitrate of ammonia, either in the condition of a dry powder, or as a strong solution,
with the black dynamite with a similar result, due in this modification, to the forma-
tion of water from the constituents of the nitrate of ammonia. The weight of
nitrate of ammonia added may about equal that of the black dynamite itself without
reducing its strength; whilst more nitrate of ammonia may be used in some cases
in which it may be desirable to very completely avoid flame.
[Di Q71

page_text: Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is.
°
The process of rendering black dynamite "flameless" by intimately mixing or
combining with it water, or nitrate of ammonia, or a solution of nitrate of ammonia, 5
substantially as hereinbefore described.
Dated this Twenix-second day of March 1890.
EDMUND HUNT,
Applicant's Agent.