Submersible pump

Claim 1

A PUMP ESPECIALLY ADAPTED FOR MOUNTING IN A WALL OF A CONTAINER COMPRISING; A HOUSING INCLUDING FLANGE MEANS FOR MOUNTING THE HOUSING ON THE WALL OF A CONTAINER, A CYLINDRICAL PROJECTION ON THE CONTAINER SIDE OF SAID HOUSING, A PUMP SLEEVE THREADED ON SAID PROJECTION AND EXTENDING INTO THE CONTAINER, A PLURALITY OF IMPELLERS, DIFFUSERS AND SPACERS IN STACKED RELATION IN SAID SLEEVE, A SUCTION HEAD THREADED IN THE OUTER END OF THE SLEEVE, SAID DIFFUSERS AND SPACERS ALTERNATING IN STACKED ALIGNED RELATIONSHIP WITHIN SAID SLEEVE AND BEING CLAMPED THEREIN BETWEEN SAID CYLINDRICAL PROJECTION AND SAID SUCTION HEAD, A PUMP DRIVE SHAFT EXTENDING THROUGH SAID PLURALITY OF IMPELLERS, SAID IMPELLERS HAVING HUBS DRIVINGLY CONNECTED TO SAID PUMP DRIVE SHAFT AND ABUTTING ONE ANOTHER SO THAT SAID IMPELLERS AND PUMP DRIVE SHAFT FORM A SOLID UNIT, THE SIDE OF THE HOUSING OPPOSITE SAID PROJECTION HAVING A FLANGE TO RECEIVE A FACE MOUNTED MOTOR, SAID HOUSING HAVING A CAVITY COMMUNICATING THROUGH SAID PROJECTION WITH THE DISCHARGE SIDE OF SAID IMPELLERS, A MEMBER IN SAID CAVITY DIVIDING IT INTO A LOWER AND UPPER CHAMBER, SAID LOWER CHAMBER RECEIVING THE DISCHARGE FROM SAID IMPELLERS, SAID MEMBER HAVING AN OPENING THEREIN, A SLEEVE BEARING FIXED IN THE OPENING IN SAID MEMBER, A DRIVE SLEEVE SUPPORTINGLY FIXED TO SAID PUMP DRIVE SHAFT AND ROTATABLY MOUNTED IN SAID SLEEVE BEARING, A CONNECTOR