Apparatus for drilling in earth covered rock

Claim 1

IN APPARATUS FOR DRILLING IN EARTH COVERED ROCK WITH BOTH A HOLLOW DRILL TUBE AND A DRILL ROD COAXIALLY OPERATING WITHIN SAID DRILL TUBE AND WITH BOTH SAID DRILL TUBE AND DRILL ROD BEING DRIVEN FOR BOTH ROTARY AND AXIAL PERCUSSIVE DRILLING MOVEMENT,S THE COMBINATION WHICH COMPRISES PERCUSSION MOTOR MEANS FOR PROVIDING SAID AXIAL PERCUSSIVE DRILLING MOVEMENT, MEANS FOR SUPPORTING SAID MOTOR MEANS FOR AXIAL ADVANCING AND RETRACTING MOVEMENTS TOWARD AND AWAY FROM SAID EARTH COVERED ROCK TO BE DRILLED, ROTARY MOTOR MEANS FOR IMPARTING SAID ROTARY MOVEMENT AND MOUNTED ON SAID SUPPORT MEANS FOR MOVEMENT WITH SAID PERCUSSIVE MOTOR MEANS, A DRIVING CHUCK COAXIALLY ALIGNED WITH SAID PERCUSSION MOTOR MEANS AND IN DRIVE ENGAGEMENT WITH SAID ROTARY MOTOR MEANS TO BE ROTATED THEREBY A DRILL ROD AND TUBE CONNECTING ADAPTED RELEASABLY ENGAGED IN SAID CHUCK BUT FOR AXIAL MOVEMENT WITH RESPECT THERETO, MEANS ON SAID ADAPTER FOR RECEIVING AND TRANSMITTING AXIAL PERCUSSIVE FORCES FROM SAID PERCUSSION MOTOR MEANS, ADDITIONAL MEANS ON SAID ADAPTER IN ROTARY DRIVING ENGAGEMENT WITH SAID CHUCK FOR TRANSMITTING THEREFROM SAID ROTARY MOVEMENT, FIRST THREADED CONNECTING MEANS ON SAID ADAPTER FOR ENGAGING ONE END OF SAID DRILL ROD AND FOR IMPARTING ROTARY MOVEMENT THERETO, ABUTMENT SURFACES ON SAID ADAPTER AND SUBSTANTIALLY PERPENDICULAR TO THE AXIS THEREOF FOR DIRECTLY TRANSMITTING PERCUSSIVE FORCES TO SAID DRILL ROD INDEPENDENTLY OF SAID THREADED CONNECTING MEANS, SECOND THREADED CONNECTING MEANS ON SAID ADAPTER FOR ENGAGING SAID DRILL TUBE AND FOR IMPARTING SAID ROTARY MOVEMENT THERETO, AND ADDITIONAL ABUTMENT SURFACES ON SAID ADAPTER FOR DIRECTLY TRANSMITTING PERCUSSIVE FORCES TO SAID DRILL TUBE INDEPENDENTLY OF SAID THREADED CONNECTING MEANS, SAID SECOND THREADED CONNECTING MEANS BEING DISPOSED COAXIALLY AROUND SAID FIRST THREADED CONNECTING MEANS AND SAID DRILL ROD AND INCLUDING MEANS FOR DISENGAGING SAID DRILL TUBE FROM SAID ADAPTER FOR RETRACTING AND WITHDRAWING SAID DRILL ROD AND SAID ADAPTER FROM SAID DRILL TUBE.