Explosive cartridges and explosives

Claim 1

A SHAPED EXPLOSIVE CARTRIDGE INCLUDING A BODY OF EXPLOSIVE HAVING A CONCAVE "SHAPED" FACE, A DETONATOR DISPOSED REARWARDLY OF SAID FACE AND EXTENDING INTO THE EXPLOSIVE IN A POSITION FOR DETONATING THE EXPLOSIVE AND A CENTERED OBSTRUCTION BETWEEN THE DETONATOR AND SAID FACE EMBEDDED IN THE EXPLOSIVE AND OF SMALLER OUTSIDE DIAMETER THAN THE OUTSIDE DIAMETER OF THE EXPLOSIVE BODY WHERE IT IS EMBEDDED TO OBSTRUCT THE CENTER PORTION OF THE DETONATION WAVE AND LEAVING A PERIPHERAL GENERALLY ANNULAR PASSAGE OF COMMUNICATION PAST SAID OBSTRUCTION TO CAUSE THE WAVE PASSING IT TO EMANATE FROM AN ANNULAR ZONE, SAID OBSTRUCTION COMPRISING A HOLLOW MEMBER HAVING ITS WALL FURTHEST FROM THE "SHAPED" FACE CONSIDERABLY HEAVIER THAN A "SHAPED" FACE LINER TO PREVENT THE PASSAGE THROUGH IT OF A FORCE WHICH WOULD DETONATE THE EXPLOSIVE IN FRONT OF IT.