Dynamoelectric machine mounting with reduced stator vibration

Claim 1

IN A MACHINE HAVING VIBRATION AND HAVING AN OUTER FRAME WITH A HOLLOW ANNULAR SHELL BETWEN FIRST AND SECOND END PLATES SUBSTANTIALLY CLOSING THE ENDS OF THE SHELL AND A STATOR COOPERATING WITH A ROTOR ON A SHAFT JOURNALLED IN THE END PLATES, THE IMPROVEMENT OF A MOUNTING FOR THE STATOR, COMPRISING, IN COMBINATION, A SUB-FRAME INCLUDING FIRST, SECOND AND THIRD PARTS, SAID THIRD PART EXTENDING LONGITUDINALLY BETWEEN SAID FIRST AND SECOND PARTS, SAID THIRD PART AT ITS LONGITUDINAL CENTER BEING MORE FLEXIBLE RADIALLY THAN TORSIONALLY ABOUT SAID AXIS, MEANS TO FASTEN SAID FIRST PART TO THE OUTER FRAME NEAR THE FIRST END PLATE, SAID SECOND PART CLOSELY ABUTTING THE OUTER FRAME NEAR THE SECOND END PLATE, AND MEANS TO FIXEDLY ATTACH SAID THIRD PART NEAR THE LONGITUDINAL CENTER THEREOF TO THE STATOR, WHEREBY RADIAL VIBRATIONS OF THE STATOR ARE IMPARTED TO SAID THIRD PART AND THEN TRANSMITTED BY THE SUB-FRAME TO THE OUTER FRAME CLOSELY ADJACENT THE TWO END PLATES OF THE OUTER FRAME WHEREAT THE RADIAL RIGIDITY THEREOF IS MANY TIMES HIGHER THAN THAT OF THE LONGITUDINAL CENTER OF THE OUTER FRAME TO THUS MINIMIZE THE AMPLITUDES OF SUCH RADIAL VIBRATIONS IN THE OUTER FRAME.