Blower wheel

Claim 1

IN A CENTRIFUGAL BLOWER WHEEL, THE COMBINATION OF A HUB MEANS ROTATABLE ABOUT A CENTRAL LONGITUDINAL AXIS AND ADAPTED FOR MOUNTING ON A ROTATABLE SHAFT, AN ANNULAR SERIES OF EQUALLY SPACED AXIALLY EXTENDING AIR MOVING BLADES WHICH ANNULAR SERIES IS CONCENTRIC WITH THE AXIS OF THE HUB MEANS, THE BLADES OF SAID SERIES HAVING OPPOSITE RADIALLY SPACED INNER AND OUTER EDGES AND ALSO HAVING AXIALLY SPACED OPPOSITE ENDS, AND SAID BLADES BEING FORMED WITH NOTCHES ARRANGED IN AN ANNULAR SERIES AND EACH SAID NOTCH EXTENDING OUTWARDLY FROM THE INNER EDGE OF ITS BLADE AND EACH SAID NOTCH HAVING OPPOSITE OUTWARDLY EXTENDING AND OUTWARDLY DIVERGING LATERAL EDGES, MEANS AT SAID OPPOSITE ENDS OF THE BLADES FOR CONNECTING THEM WITH EACH OTHER, AND TWO SEPARATE GENERALLY RADIAL SHEET METAL SUPPORTING MEMBERS RIGIDLY CONNECTED WITH THE HUB MEANS AND EXTENDING RADIALLY OUTWARDLY THEREFROM, SAID SUPPORTING MEMBERS HAVING PERIPHERAL PORTIONS LOCATED IN SAID NOTCHES IN THE BLADES AND SAID MEMBERS BEING IN DIRECT ENGAGEMENT WITH EACH OTHER ALONG AN ANNULAR ZONE IMMEDIATELY ADJACENT AND INWARDLY OF THE INNER EDGES OF THE BLADES AND THE ENTIRE ANNULAR PERIPHERAL PORTIONS OF SAID MEMBERS THAT ARE RADIALLY OUTSIDE OF SAID ANNULAR ZONE BEING SPACED APART AND DIVERGING OUTWARDLY AND RESPECTIVELY IN ENGAGEMENT WITH THE OPPOSITE OUTWARDLY DIVERGING EDGES OF THE SEVERAL NOTCHES IN THE BLADES THROUGHOUT THE MAJOR PARTS OF THE LENGTHS OF SAID EDGES AND SAID SUPPORTING MEMBERS BEING SO STRESSED THAT THEY INHERENTLY CAUSE SAID ENGAGEMENT WITH THE NOTCH EDGES TO BE UNDER PRESSURE.