Year: 1888

page_text: Date of Application, 10th Mar., 1888
Complete Specification Left, 2nd Aug., 1888
Complete Specification Accepted, 7th Sept., 1888
in Mines.
We ERNEST KUBIN and ALFRED SIERSCH both of IV Hauptstrasse No. 59 Vienna
in the Empire of Austria Civil Engineers do hereby declare the nature of this Invention
to be as follows:-
The object of this Invention is to provide an explosive which on being ignited will
prevent danger of ignition of fire damp or explosive matter which may be present at
the place of ignition.
This is effected according to our Invention by adding to the constituents of the
explosive an ingredient which will on ignition of the explosive be decomposed into
gases which are non-inflammable and will have the effect of reducing the temperature
of and attenuating the explosive gases and prevent the flame due to ignition from
coming into contact with the fire damp or explosive matter which may be present.
Suitable ingredients for the aforesaid purposes are the Salts of Ammonium especially
the Carbonate Sulphate & Chloride and a suitable proportion of the said ingredient
is from 20 to 50 per cent. thereof to from 80 to 50 per cent. of the explosive
compound.
Dated this 10th AL 1 1000
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents.

page_text: COMPLETE SPECIFICATION.
An Improved Manufacture of Explosives Especially Adapted for Use
in Mines.
We ERNEST KUBIN and ALFRED SIERSCHI both of Vienna in the Empire of Austria
Civil Engineers 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 :-
The object of this Invention is to provide an explosive which on being ignited will
prevent danger of ignition of fire damp or coal dust in mines.
This is effected according to our Invention by adding to the constituents of the
explosive an ingredient which on ignition of the explosive will be decomposed into
gases which are non-inflammable and will have the effect of reducing the temperature
and rarefying the explosive gases. The ingredient we employ for the aforesaid purpose
is either Sulphate or Hydrochlorate of Ammonia and a suitable proportion of such
ingredient is from 20 to 50 per cent. thereof to from 80 to 50 per cent. of the explosive
compound. The said Sulphate and Hydrochlorate may be used together or simul-
taneously if desired.
Explosive compounds of the class prepared with nitroglycerine are manufactured
by intimately mixing the hydrochlorate or sulphate of ammonia with nitro-glycerine
absorbed by any active or inactive absorbent or gelatinized by the addition of soluble
gun cotton.
In consequence of the considerable crushing effect of the nitroglycerine
explosives the addition of the said ammonia salts may be increased to above
50 per cent. and still the explosives so prepared will be efficient for blasting in coal
mines.
The exact proportion of the said salts of ammonia to be mixed with the explosive
compounds is of course variable with the composition and of the explosive temperatures
of the said explosive compounds.
Having now particularly described and ascertained the nature of our said
Invention and the manner in which the same is to be performed we declare that
what we claim is.
1. In the manufacture of explosives the admixture of Sulphate or Hydrochlorate of
ammonia or sulphate and hydrochlorate of ammonia to dynamite and blasting gelatine
or other ordinary constituents of explosives."
2. As new articles of manufacture the safety explosive compounds produced as
herein before described.