A Process for Granulating and Glazing Gelatinous Explosives.
Year: 1889

page_text: Date of Application, 5th Feb., 1889
Complete Specification Left, 5th Nov., 1889-Accepted, 7th Dec., 1889
PROVISIONAL SPECIFICATION.
[Communicated from abroad by FRIEDRICH CARL GLASER, of 80, Linden Strasse,
Berlin, in the German Empire, Engineer and Manufacturer.]
A Process for Granulating and Glazing Gelatinous Explosives.
I OLIVER IMRAY of No. 28 Southampton Buildings Chancery Lane in the County
of Middlesex Fellow of the Institute of Patent Agents do hereby declare the nature of
this invention to be as follows :—
Several kinds of explosive compounds are manufactured in a gelatinous condition,
as for example, those described in the Specifications No. 6022 of 1887 No. 17,167 of
1887 and No. 1471 of 1888.
Those can be dried into masses more or less hard or can be moulded into blocks or
pieces of various forms. It is however convenient to produce such explosives in the
form of glazed granules like those of gunpowder, so that the material can be readily
poured and can be fed into cartridge or other cases.
This invention relates to a process for converting such gelatinous explosives into the
desired granular form.
For this purpose the compound while it is still in a plastic condition is moulded
into sheets or rods, and these are cut up into small pieces which after being dried are
passed between a pair of helically grooved rollers whereby the pieces are subdivided
and reduced. The material discharged from the roller is sifted. The dust and
particles that are too small are separated by the sifting and are afterwards made up
with a fresh quantity of the gelatinous compound. The larger particles are passod
between a second pair of rollers more finely grooved and the product is again sifted.
The particles which are now nearly of the size desired for granular powder are then
put into an open mouthed bulbous shaped vessel which revolves on an inclined axis
and in this the granules are made to roll over and over whereby their sharp angles
are rubbed off, and the granules become more or less polished. This polishing
operation is several times repeated with intermediate siftings, and in the last of the
polishing operations finely pulverised plumbago is added to give the desired glazed
to the granules which then, after being again dried are sized by sifting and are ready
for use.
Dated this 5th day of February 1889.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
A Process for Granulating and Glazing Gelatinous Explosives.
I, OLIVER IMRAY of No. 28 Southampton Buildings, Chancery Lane in the County
of Middlesex, Fellow of the Institute of Patent Agents 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:-
Several kinds of explosive compounds are manufactured in a gelatinous condition,
as for example those described in the Specifications No. 6022 of 1887 No. 17,167 of
1887 and No. 1471 of 1888.
These can be dried into masses more or less hard or can be moulded into blocks or
pieces of various forms. It is however convenient to produce such explosives in the
form of glazed granules like those of gunpowder, so that the material can be readily
poured, and can be fed into cartridge or other cases.

page_text: This invention relates to a process for converting such gelatinous explosives into the
desired granular form.
For this purpose, the compound while it is still in a plastic condition is moulded
into sheets or rods and these are cut up into small pieces, which, after being dried, aro
passed between a pair of helically grooved rollors whereby the pieces are subdivided
and reduced.
The material discharged from the roller is sifto. The dust and particles that are
too small are separated by the sifting and aro afterwards made up with a fresh quan-
tity of the gelatinous compound. The larger particles are passed between a second
pair of rollers more finely grooved and the product is again sifted. The particles
which are now nearly of the size desired for granular powder, are then put into an
open mouthed bulbous shaped vessel which revolves on an inclined axis and in this
the granules are made to roll over and over whereby their sharp angles are rubbed off,
and the granules become more or less polished. This polishing operation is several
times repeated with intermediate siftings, and, in the last of the polishing operations,
finely pulverised plumbago is added to give the desired glaze to the granules, which
then, after being again dried, aru sized by sifting and are ready for use.
Having now particularly described and ascertained the nature of this inven
tion and in whint manner the same is to be performed I declare that what 1
claim is :-
The herein described process for granulating and glazing gelatinous explosives, by
moulding the compound into sheets or rods, cutting these into small pieces, drying the
pieces, subdividing them by passing them between grooved rollers, sifting out the
dust for subsequent compounding, polishing the granules in an inclined revolving
vessel, and glazing them with plumbago.
Dated this 5th day of November 1889.
ABEL & IMRAY,
Agents for the Applicant.