38 Actuator
The biggest feature on the outside of this very
unusual cartridge is the square, four
crimp primer pocket.
It also has a roll crimp over
a manila color wad.
This is a very interesting
Note the cutaway drawing.  The primer lights
the (time delayed) internal fuse, which, in turn,
lights the charge
and sends hot gas via a flexible
hose (attached to
the base of the actuator unit),
down to the under
the seat rocket
firing mechanism of the Ejection Seat.
for 1950s to 1960s early Ejection Seat
 USAF (Time Delay) Cartridge