Swivel and feed connection for a core drill

Claim 1

A WATER SWIVEL AND AXIAL FEED CONNECTION FOR AN OPEN-ENDED TUBULAR CORE DRILL, SAID CONNECTION COMPRISING A GENRALLY CYLINDRICAL OPEN-ENDED TUBULAR HOUSING HAVING A LATERAL MOUNTING LEG FORMED THEREON ADAPTED FOR CONNECTION TO A RECIPROCABLE FEED CARRIAGE, A MOTOR HAVING A CASING FIXEDLY SECURED TO THE UPPER RIM OF SAID HOUSING, CLOSING THE SAME AND HAVING A MOTOR SHAFT PROJECTING PARTIALLY INTO HE HOUSING IN CONCENTRIC RELATION WITH RESPECT THERETO, A CORE DRILL DRIVE SHAFT HAVING ITS UPPER END REGION PROJECTING INTO THE HOUSING IN CONCENTRIC RELATION WITH RESPECT THERETO AND HAVING ITS LOWER END REGION PROJECTING DOWNWARDLY THROUGH THE LOWER RIM OF THE HOUSING, THE UPPER END OF SAID DRIVE SHAFT TERMINATING WITHIN THE AXIAL CONFINES OF THE HOUSING AND ADJACENT TO THE UPPER END OF THE LATTER, THE EXTREME LOWSER END REGION OF SAID DRIVE SHAFT BEING ADAPTED TO HAVE AFFIXED THERETO THE UPPEREND REGION OF A CORE DRILL WHICH THE DRILL SLEEVE REMAINING SPACED FROM THE DRIVE SHAFT AND IN CONCENTRIC RELATION WITH RESPECT THERETO, THE UPPER END OF SAID DRIVE SHAFT BEING PROVIDD WITH A RELATIVE DEEP SOCKET THEREIN INTO WHICH THE LOWER END OF THE MOTOR SHAFT PROJECTS AND WITHIN WHICH IT IS KEYED, THEREBY ESTABLISHING A DRIVING CONNECTION BETWEEN THE MOTOR SHAFT AND THE DRIVE SHAFT, A THRUST BEARING SURROUNDING SAID DRIVE SHAFT AND INTERPOSED BETWEEN THE DRIVE SHAFT AND THE LOWER RIM REGION OF THE HOUSING FOR TRANSMISSION OF THE DOWNWARD THRUST OF THE HOUSING TO THE SHAFT WHILE PERMITTING ROTATION OF THE SHAFT WITHIN THE HOUSING, SAID HOUSING BEING PROVIDED WITH A WATER INLET OPENING IN THE MEDIAL REGION THEREOF, AND A PAIR OF AXIALLY SPACED LIP SEALS SURROUNDING THE DRIVE SHAFT AND INTERPOSED BETWEEN THE DRIVE SHAFT AND HOUSING ABOVE AND BELOW SAID WATER INLET OPENING, RESPECTIVELY, SAID LIP SEALS, IN COMBINATION WITH THE DRIVE SHAFT AND HOUSING, ESTABLISHING AN ANNULAR WATERCVHAMBER WITHIN THE HOUSING AND IN REGISTER WITH WATER CHAMBER WITHIN THE HOUSING AND IN REGISTER WITH PASSAGE THEREIN INCLUDING A LATERAL SECTION IN COMMUNICATION WITH SAID ANNULAR WATER CHAMBER AND AN AXIAL SECTION OPENING THROUGH THE LOWER END FACE OF THE DRIVE SHAFT AND ADAPTED TO CONDUCT WATER FROM THE CHAMBER TO THE INTERIOR OF THE ASSOCIATED CORE DRILL.