Apparatus for cutting out lateral cores

Claim 1

CORE REMOVING MEANS COMPRISING AN ELONGATED HOLLOW CASING FORMED WITH A LONGITUDINAL WALL HAVING AN OPENING THEREIN, SAID CASING BEING ADAPTED TO BE SUSPENDED IN A WELL, ANNULAR CARRIER MEANS PIVOTALLY MOUNTED IN SAID CASING TO SWING ABOUT AN AXIS SUBSTANTIALLY DIAMETRAL OF SAID CASING INTO AND OUT OF ALIGNMENT WITH SAID OPENING, A FIRST INTERNALLY THREADED OPEN-ENDED SLEEVE HAVING A LENGTH LESS THAN THE DIAMETER OF SAID CASING AND ROTATABLY MOUNTED IN SAID ANNULAR CARRIER MEANS A SECOND OPENENDED SLEEVE HAVING EXTERNAL THREADS MATING WITH THE INTERNAL THREADS OF SAID FIRST SLEEVE AND ROTATABLY MOUNTED IN AND PROJECTING FROM SAID FIRST SLEEVE, A CORE CUTTER CARRIED AT SAID PROJECTING END OF SAID SECOND SLEEVE, REVERSIBLE POWER TRANSMISSION MEANS IN SAID CASING FOR SWINGING SAID CARRIER MEANS AND SLEEVES AS A UNIT IN EITHER DIRECTION ABOUT SAID AXIS BETWEEN A FIRST POSITION IN WHICH SAID CARRIER MEANS AND SLEEVES EXTEND LONGITUDINALLY OF SAID CASING IN ALIGNMENT WITH SAID OPENING AND A SECOND POSITION IN WHICH THEY EXTEND TRANSVERSELY WITH RESPECT TO SAID CASING, A STOP IN SAID CASING POSITIONED TO PREVENT SWINGING MOVEMENT OF THE CARRIER MEANS PAST THE SAID TRANSVERSE POSITION, SAID POWER TRANSMISSION MEANS BEING CONSTRUCTED AND ARRANGED TO RELATIVELY