End turn support arrangement

Claim 1

IN A DYNAMOELECTRIC MACHINE HAVING A LAMINATED CORE WITH A PLURALITY OF AXIALLY EXTENDING CIRCUMFERENTIALLY SPACED SLOTS THEREIN, AND A WINDING IN SAID CORE INCLUDING A PLURALITY OF COILS IN SAID SLOTS HAVING INNER AND OUTER OVERLAPPING LAYERS OF END TURNS PROJECTING AXIALLY OUTWARD FROM THE CORE, THE IMPROVEMENT OF AN END TURN SUPPORT SYSTEM COMPRISING: (A) A PAD OF INSULATING MATERIAL IN A SUBSTANTIALLY INFLEXIBLE STATE DISPOSED BETWEEN THE OVERLAPPING LAYERS OF END TURNS AND POSITIONED IN INTIMATE CONTACT WITH AND CONFORMING TO THE FACING SURFACES OF ADJACENT END TURNS IN BOTH THE INNER AND OUTER LAYERS, THE MATERIAL OF SAID PAD BEING CHARACTERIZED BY AN INITIALLY VISCOUS FORM PERMANENTLY CURABLE TO SAID SUBSTANTIALLY INFLEXIBLE STATE; AND (B) MEANS SEPARATE FROM SAID PAD RIGIDLY SECURED TO SAID CORE AND ESSENTIALLY IMMOVABLE RELATIVE THERETO BIASED AGAINST THE INNER SURFACE OF SAID INNER LAYER AND THE OUTER SURFACE OF SAID OUTER LAYER PROVIDING CONSTRICTION OF SAID LAYERS TOWARD EACH OTHER, (C) WHEREBY SAID PAD AND SAID MEANS COMBINE TO RENDER SAID END TURNS SUBSTANTIALLY IMMOVABLE RELATIVE TO SAID CORE WHEN THE WINDING IS SUBJECTED TO MAGNETIC AND VIBRATORY FORCES.