Magazine for storing and handling drill pipe in rotary drilling rig

Claim 1

IN A ROTARY DRILLING RIG INCLUDING A MAST FOR HANDLING A STRING OF DRILL PIPE COMPOSED OF DRILL PIPE SECTIONS CONNECTED IN END TO END RELATION BY EXTERNAL THREADED PINS ON THE LOWER ENDS OF EACH SECTION CONNECTED WITH INTERNALLY THREADED BOXES ON THE UPPER ENDS OF SID SECTIONS, A MAGAZINE FOR STORING AND HANDLING THE DRILL PIPE SECTIONS IN THE MAST WHEN THEY ARE DISCONNECTED FROM SAID STRING OF DRILL PIPE AND FOR CARRYING THE DRILL PIPE SECTIONS TO AND FROM AXIAL REGISTRY WITH THE STRING OF DRILL PIPE, SAID MAGAZINE HAVING UPPER AND LOWER HEADS PROVIDED WITH ARCUATE SLOTS OPENING THROUGH THE FRONT EDGE OF SAID HEADS, MEANS WITHIN THE MAST FOR SUPPORTING THE MAGAZINE FOR ROTATION ON AN AXIS WITHIN THE MAST WITH CENTERS OF THE OPEN ENDS OF THE SLOTS ARRANGED TO INTERSECT THE AXIS OF THE DRILLING STRING, MEANS FOR TURNING THE MAGAZINE ON SAID AXIS TO A POSITION WITH A DRILL PIPE SECTION IN THE DRILLING STRING PASSING INTO SAID SLOTS TO PICKUP AND SUPPORT THE DRILL PIPE SECTION WHEN BEING DISCONNECTED FROM THE DRILLING STRING AND FOR CARRYING THE DRILL PIPE SECTION AWAY FROM THE DRILLING STRING TO STORAGE POSITION AND FOR RETURNING THE DRILL PIPE SECTION INTO AXIAL REGISTRY WITH THE STRING OF DRILL PIPE FOR RECONNECTION TO THE DRILLING STRING, AND MEANS FOR RAISING AND LOWERING THE MAGAZINE FOR MOVING THE PIN OF SAID SECTION FROM THE BOX OF THE NEXT SECTION IN THE DRILLING STRING IN SAID FIRST POSITION AND TO LOWER THE PIN INTO THE BOX IN SAID OTHER POSITION OF THE MAGAZINE.