Earth coring device

Claim 1

A SOIL SAMPLING DEVICE COMPRISING A GUN BARREL, A CARTRIDGE CHAMBER MOUNTED IN THE UPPER PORTION OF SAID GUN BARREL AND MEANS MOUNTED ON THE UPPER PORTION OF SAID BARREL TO FIRE CARTRIDGES CARRIED IN SAID CARTRIDGE CHAMBER, A CYLINDRICAL HOUSING ADAPTED TO BE MOUNTED OVER A GROUND AREA, MEANS CARRYING SAID GUN BARREL COAXIALLY IN DEPENDING RELATION WITHIN SAID HOUSING, A PAIR OF PAIRS OF RIGID RINGS SLIDABLY MOUNTED AROUND SAID BARREL. A RESILIENT RING MOUNTED BETWEEN THE RIGID RINGS OF EACH PAIR, SPRING MEANS MOUNTED AROUND SAID BARREL TO SPRING URGE THE TWO PAIRS OF RINGS IN OPPOSITE RELATION, SAID RESILIENT RING HAVING A DIAMETER NORMALLY MAKING LESS THAN SEALING CONTACT WITH THE BORE OF SAID HOUSING AND THE OUTER WALL OF SAID BARREL AND OPERABLE UPON COMPRESSION TO FORM GAS SEALS AGAINST THE OUTER WALL OF SAID BARREL AND THE BORE OF SAID HOUSING, A GROUND ENTRY PROJECTILE HAVING A DIAMETER COMPLEMENTARY WITH THE BORE OF SAID CYLINDRICAL HOUSING POSITIONABLE BELOW SAID BARREL, HAVING A DIAMETER LESS THAN SAID BARREL ROD MOUNTED ON SAID PROJECTILE EXTENDING UPWARDLY INTO SAID BARREL WHEREBY EXPLOSIVE GASES EMANATING FROM A PROJECTILE FIRED FROM SAID CHAMBER ENTER FROM BETWEEN SAID ROD AND BARREL INTO THE AREA BETWEEN THE LOWER OF SAID PAIR OF RIGID RINGS AND SAID PROJECTILE TO CAUSE FORCE AGAINST SAID LATTER RING AND SAID PROJECTILE TO FORCE THE PROJECTILE OUT OF SAID HOUSING AND TO COMPRESS SAID LATTER RING UPWARDLY AGAINST THE RESPECTIVE RESILIENT RINGS TO CAUSE OUTER EXPANSION THEREOF AND ENGAGEMENT WITH THE BORE IN GAS TIGHT ENGAGEMENT WITH THE BORE OF SAID CYLINDRICAL HOUSING AND THE OUTER WALL OF SAID BARREL.