DIE DI DUIETATION, Manufacture of Grained Smokeless Explosive.
Year: 1890

page_text: Date of Application, 18th Mar., 1890-Accepted, 3rd May, 1890
COM DIE DI DUIETATION,
Manufacture of Grained Smokeless Explosive.
I, WILHELM SCHÜCKHER, of Hegelgasse 13, Vienna, in the Austrian Empire,
Manufacturer, 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
ollowing statement :-
-
This invention relates to the manufacture of smokeless explosive by a mixture of
explosive starch (xyloidine) and nitrobenzole, these compounds being prepared in a
known way.
The proportion of the two ingredients may be varied within the following limite ·
COM DIE DI PUITIATION,
Manufacture of Grained Smokeless Explosive.
I, WILHELM SCHÜCKHER, of Hegelgasse 13, Vienna, in the Austrian Empire,
Manufacturer, 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 the manufacturo of smokeless explosive by a mixture of
explosive starch (xyloidine) and nitrobenzole, these compounds being prepared in a
known way.
The proportion of the two ingredients may be varied within the following limita ·
Explosive starch (xyloidine)
Nitrobenzole
from 95 to 90 per cent.
5 10
"
"
"
"
In manufacturing the explosive, dry oxyloidine is thoroughly mixed and incor-
porated with nitrobenzole by kneading them together by hand or otherwise. The
mixed mass is introduced into a ball grinding mill like those used in the manufacture
of ordinary gunpowder, and is ground during 6 to 12 hours, whereby it is reduced to
the state of a nearly dry powder.
This powder is pressed in moulds into flat cakes under a pressure of about
12,000 pounds per square inch. These cakes are afterwards broken into grains by
means of a granulating machine such as that used in the manufacture of ordinary
gunpowder, and the grains are rounded by treating them for 10 to 16 bours in
revolving drums, and then they are glazed and coated with plumbago in other
drums.
The smokeless explosive thus obtained is in the form of very hard globular black
grains; it is not affected by shocks or blows and is difficult to ignite. It well
resists atmospheric influences, is not at all hydroscopic, nor does it soil the barrel
of the gun in which it is fired. The gases evolved by its combustion give a pressure
of from 2,500 to 2,600 atmospheres and give a projectile an initial velocity of from
1700 to 1800 feet per second."
As the manufacture of this novel smokeless gunpowder differs very little from
that of ordinary gunpowder, any gunpowder mill can be readily adapted for
producing the smokeless gunpowder.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The manufacture of smokeless gunpowder, consisting in a mixture of xyloidine
and nitrobenzole, substantially as described.
2. The herein described process for making smokeless gunpowder by thoroughly
mixing dry xyloidine (explosive starch) with nitrobenzole, grinding the mass to
powder, pressing the powder to cakes, and granulating the cakes.
3. The herein described process for making smokeless gunpowder by thoroughly
mixing dry xyloidine (explosive starch) with nitrobenzole, grinding the mass to
powder, pressing the powder to cakes, granulating the cakes, and rounding off, and
glazing the grains and coating them with plumbago.
Dated this 18th day of March 1890.
ABEL & IMRAY,
Agents for the Applicant.