Dump bailer

Claim 1

A WELL TOOL FOR CARRYING AND DISCHARGING MATERIALS IN A FLOW CONDUCTOR COMPRISING: A BARREL ADAPTED TO PASS THROUGH SAID FLOW CONDUCTOR; ANCHORING MEANS HAVING A CLOSURE MEANS THEREON DISPOSED IN THE LOWER END OF SAID BARREL TO CLOSE SAID LOWER END THEREOF, SAID ANCHORING MEANS BEING OPERABLE IN RESPONSE TO PREDETERMINED MOVEMENTS OF SAID BARREL IN SAID FLOW CONDUCTOR TO ANCHOR SAID CLOSURE MEANS IN SAID FLOW CONDUCTOR; MEANS FOR RELEASABLY CONNECTING SAID ANCHORING MEANS TO SAID BARREL WHEREBY SAID BARREL IS SEPARABLE FROM SAID ANCHORING MEANS UPON LONGITUDINAL MOVEMENT OF SAID ANCHORING MEANS UPON LONGITUDINAL MOVEMENT OF SAID BARREL RELATIVE TO SAID ANCHORING MEANS THEREBY OPENING SAID LOWER END OF SAID BARREL; SAID BARREL BEING MOVABLE LONGITUDINALLY OF SAID FLOW CONDUCTOR AWAY FROM SAID ANCHORING MEANS AND CLOSURE MEANS AFTER SAID ANCHORING MEANS HAS BEEN ANCHORED IN SAID FLOW CONDUCTOR; A PISTON SLIDABLY MOUNTED IN SAID BARREL; AND OPERATOR ENGAGEABLE WITH SAID ANCHORING MEANS, SAID OPERATOR MEANS MOVING SAID PISTON THROUGH SAID BARREL TOWARD THE OPEN END THEREOF AT A RATE IN EXCESS OF THE RATE OF MOVEMENT OF SAID BARREL AWAY FROM SAID ANCHORING MEANS UPON MOVEMENT OF SAID BARREL AWAY FROM SAID ANCHORING MEANS TO DISCHARGE THE CONTENTS OF SAID BARREL BELOW SAID PISTON THROUGH SAID OPEN LOWER END AT A RATE EXCEEDING THE RATE OF MOVEMENT OF SAID BARREL IN SAID FLOW CONDUCTOR AWAY FROM SAID ANCHORING MEANS.