(57) A ballistic projectile arrester, suitable for fires with small arms as well as with
arms of other kinds, particularly in indoors firing grounds or shooting-galleries,
comprising a projectile impact structure consisting of a granular material in the
form of a heap (5) and a regeneration and/or recovery system for said granular material,
with the respective separation of the projectiles, characterized in that said regeneration
and/or recovery system for said granular material comprises vibrating means (8;27)
as well as conveyor means so as to cause said material to move and to be conveyed,
and means (11; 12) for recovering the material; delivery mechanical means (13) which
convey said granular material together with the fired projectiles toward separation
means (15) in which said projectiles are collected; and feeding conduit means (20)
for conveying the granular material back to the feeding chamber (18); and in that
air pre-riltering means (19) are provided downstream said conveyor (44) for intercepting
granules still suspended in the air stream, as well as first conduit means (20) making
filtered air and powder fines to flow toward filtering means (21) for causing said
powders to settle; second conduit means (23) departing from said filtering means (21),
such second conduit means (23) conveying the air stream under the heap of granular
material; and in that said vibrating means (8;27) and conveyor means are arranged
according to the angle of slide of the material mass.
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