Propeller-type fan blade wheel and method of making the same

Claim 1

A PROPELLER-TYPE FAN WHEEL COMPRISING A CYLINDRICAL HUB CASING HAVING A PLURALITY OF ANGULARLY DISPOSED SLOTS SPACED IN THE WALL THEREOF, A HUB WITHIN SAID CASING HAVING A PASSAGE THERETHROUGH FOR A SHAFT, A PLURALITY OF FAN BLADES HAVING THEIR INNER ENDS INSERTED IN SAID CASING SLOTS WITH SAID BLADES RADIATING OUTWARDLY FROM SAID CASING, MEANS WITHIN SAID CASING INTERCONNECTING THE INNER ENDS OF SAID BLADES, A FILLER MATERIAL WITHIN SAID HUB CASING, SAID HUB AND BLADE INNER ENDS BEING EMBEDDED THEREIN, A SET SCREW IN SAID HUB, THERE BEING AN OPENING IN SAID CASING RADIALLY OPPOSITE SAID SET SCREW, MEANS IN SAID FILLER MATERIAL DEFINING A PASSAGE THEREIN BETWEEN SAID HUB CASING OPENING AND SAID SET SCREW TO PROVIDED ACCESS TO SAID SET SCREW FROM THE EXTERIOR OF SAID CASING, SAID CASING HAVING A CUP-SHAPED BOTTOM WALL, THERE BEING A SHAFT OPENING IN SAID BOTTOM WALL, THE HUB WITHIN SAID CASING SURROUNDING SAID SHAFT OPENING, THERE BEING HOLES IN THE INNER ENDS OF SAID BLADES, AND A FLEXIBLE CORD PASSING THROUGH SAID BLADE HOLES TO INTERCONNECT THE BLADES WITHIN SAID CASING.