Apparatus for blowing insulation

Claim 1

MEANS FOR MOVING FIBROUS INSULATION FROM A SOURCE OF SUPPLY TO A SPACE TO BE INSULATED, SAID MEANS COMPRISING A HOUSING HAVING A FLAT SIDEWALL OF CIRCULAR SHAPE WITH A CENTRAL OPENING, AN INTEGRAL PERIPHERAL WALL AROUND SAID SIDEWALL AND OF GENERALLY CYLINDRICAL SHAPE EXCEPT FOR AN OUTLET OPENING AT ONE PORTION THEREOF, WALL MEANS FORMING A FLARED EXIT PASSAGE COMMUNICATING WITH SAID OUTLET OPENING AND FLARING BOTH HORIZONTALLY AND VERTICALLY THEREFROM, SAID EXIT PASSAGE TERMINATING IN A CIRCULAR OPENING, A COVER PLATE ATTACHED TO SAID PERIPHERAL WALL AND DISPOSED PARALLELLY TO SAID SIDEWALL, A MOTOR MOUNTED ON SAID COVER PLATE AND HAVING A DRIVE SHAFT EXTENDING THROUGH SAID COVER PLATE AND ALIGNED WITH SAID CENTRAL OPENING, AN IMPELLER AFFIXED TO SAID DRIVE SHAFT AND COMPRISING A BASE HAVING A FLAT SURFACE, A CIRCULAR PERIPHERY, AND A SURFACE OPPOSITE TO SAID FLAT SURFACE WHICH FLARES TO A PEAK ALIGNED WITH SAID CENTRAL OPENING, A PLURALITY OF BLADES INTEGRAL WITH SAID BASE AND EXTENDING GENERALLY RADIALLY, THE INNER ENDS OF SAID BLADES TERMINATING RADIALLY OUTWARDLY FROM SAID PEAK AND THE OUTER ENDS OF SAID BLADES TERMINATING AT THE PERIPHERY OF SAID BASE, OUTER END PORTIONS OF SAID BLADES CURVING REARWARDLY IN A DIRECTION OPPOSITE TO THE DIRECTION OF ROTATION OF SAID IMPELLER WITH THE RADIUS OF CURVATURE DECREASING SUBSTANTIALLY UNIFORMLY FROM THE INNER TO THE OUTER ENDS OF SAID BLADES, THE OUTER LONGITUDINAL EDGES OF SAID BLADES BEING A DISTANCE FROM SAID BASE AT THEIR OUTER ENDS AT LEAST EQUAL TO THE DISTANCE FROM THE BASE AT THEIR INNER ENDS, AND A HOSE COMMUNICATING WITH SAID OUTLET OPENING.