Year: 1898

page_text: Date of Application (in the United Kingdom), 19th Nov., 1898
Complete Specification Left, 4th Aug., 1899-Accepted, 23rd Sept., 1899
I, ERNEST AUGUSTE GEORGE STREET, of 60, Boulevard Haussmann, Paris, in the
Republic of France, Engineer, do hereby declare the nature of this invention to be as
follows:-
In a previous patent I have described the manufacture of chlorate powders by
means of solutions of nitro- or, azo-derivatives nixed with chlorate of potash at a
temperature at which these solutions are liquid.
This invention has for its object to guarantee to us the exclusive right to apply the
same process to other chlorate powders by substituting pitcb, solid or pasty bars for
the whole or part of the nitro- or azo-derivatives.
When by substituting tars for nitro-derivatives, too soft a product is obtained, a
little pulverised charcoal, cellulose powder or starch may be added. Thus a very good
quality powder is obtained at a very small cost.
Nitro- or azo-derivatives alone or mixed together dissolve in the mixture of oil and
tar as well as in oil alone; however, in the great variety and number of these products,
I have found, for a small number of samples, that picric acid formed, with certain
parts of tar, compounds insoluble in the mixture of oil and tar, and fusible with
difficulty; certain of these samples came from coal. When picric acid is to enter
into the composition, it will be therefore preferable to take dry pitch (brai) or wood
tars. All the tars may, on the contrary, be used in other cases. In these conditions,
that is to say mixed with oil, the tars enable powders to be obtained which do not
dry up, which drying takes place very quickly when tar alone is used.
The following are some examples of these explosives produced according to this
invention.

page_text: BOULT & WADE,
Agents for the Applicant.
I, ERNEST AUGUSTE GEORGE STREET, of 60, Boulevard Haussman, Paris, in the
Republic of France, Engineer, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
In a previous patent I have described the manufacture of chlorate powders by
means of solutions of nitro- or azo-derivatives mixed with chlorate of potash at a
temperature at which these solutions are liquid.
The present application has for its object to guarantee to me the exclusive right
to apply the same process to other chlorate powders by substituting pitch, solid or
pasty tars for the whole or part of the nitre- or azo-derivatives.
When by substituting tars for nitro-derivatives, too soft a product is obtained, a
little pulverised charcoal, cellulose powder or starch or the like may be added. Thus
a very good quality powder is obtained at a very small cost.
Nitro- or azo-derivatives alone or mixed together dissolve in the mixture of oil and
tar as well as in oil alone; however, in the great variety and number of these products,
I have found, for a small number of samples, that picric acid formed, with certain
parts of tar, compounds insoluble in the mixture of oil and tar, and fusible with
difficulty certain of these samples came from coal. When picric acid is to enter
into the composition, it will be therefore preferable to take dry pitch (brai) or wood
All the tars may, on the contrary, be used in other cases. In these conditions,
that is to say mixed with oil, the tars enable powders to be obtained which do not
dry up, which drying takes place very quickly when tar alone used.
tars.

page_text: The following are some examples of these explosives produced according to this
invention.
BOULT & WADE,
Agents for the Applicant.