Externally cooled induction motor

Claim 1

IN AN ELECTRIC INDUCTION MOTOR THE COMBINATION COMPRISING A MOTOR ENCLOSURE, STATOR WINDINGS POSITIONED WITHIN SAID ENCLOSURE, A BASIS ROTOR MEMBER POSITIONED WITHIN SAID ENCLOSURE IN ROTATABLE RELATION TO SAID STATOR WINDINGS, SAID ROTOR MEMBER INCLUDING A SHAFT SUPPORTED BY SAID ENCLOSURE AND HAVING AN END PORTION PROJECTING OUTWARDLY THEREFROM, A FIXED RESISTANCE ELEMENT OF A FIRST SPECIFIED VALVE NONROTATABLY AND REMOVABLY SECURED TO SAID SHAFT END PORTION EXTERNALLY OF SAID ENCLOSURE SO THAT SAID RESISTANCE ELEMENT ROTATES WITH SAID SHAFT, SAID RESISTANCE ELEMENT HAVING TERMINAL PORTIONS, A CYLINDRICAL MEMBER OF NONCONDUCTING MATERIAL HAVING AN AXIAL PASSAGEWAY THERETHROUGH, SAID CYLINDRICAL MEMBER POSITIONED ON AND ROTATABLE WITH SAID SHAFT, SAID CYLINDRICAL MEMBER PROJECTING OUTWARDLY OF SAID ENCLOSURE AND HAVING OTHER LONGITUDINAL PASSAGEWAYS THEREIN, SAID ROTOR MEMBER HAVING PORTIONS EXTENDING THROUGH SAID CYLINDRICAL MEMBER OTHER PASSAGEWAYS AND CONNECTING SAID ROTOR MEMBER TO SAID RESISTANCE ELEMENT TERMINAL PORTIONS TO THEREBY ELECTRICALLY CONNECT SAID RESISTANCE ELEMENT TO SAID BASIC ROTOR, SAID RESISTANCE ELEMENT, SAID CYLINDRICAL MEMBER, AND SAID SHAFT SO CONSTRUCTED AND ARRANGE THAT SAID RESISTANCE ELEMENT MAY BE READILY REMOVED AND REPLACED BY A SECOND FIXED RESISTANCE ELEMENT OF A SECOND SPECIFIED VALUE WHEREBY THE OPERATING CHARACTERISTICS OF SAID INDUCTION MOTOR MAY BE VARIED, EACH OF SAID RESISTANCE ELEMENTS HAVING A GREATER RESISTANCE TO ELECTRIC CURRENT THAN SAID BASIC ROTOR SO THAT SAID RESISTANCE ELEMENT WHEN INSTALLED IS HEATED INSTEAD OF SAID BASIC ROTOR WHEN SAID MOTOR IS ENERGIZED.