Blower wheel construction

Claim 1

IN A BLOWER WHEEL CONSTRUCTION THE COMBINATION OF: AN ANNULAR ASSEMBLY OF ELONGATED BLADES SPACED LATERALLY WITH RESPECT TO EACH OTHER AND FORMED OF A SINGLE SHEET OF METAL, SAID BLADES ALL INTEGRAL THEREWITH; A PAIR OF STRIP PORTIONS OF SAID SHEET METAL SPACED FROM EACH OTHER AND INTEGRAL WITH OPPOSITE ENDS OF SAID BLADES; OPPOSITE SIDES OF SAID STRIP PORTIONS BEING COMMON TO RESPECTIVE OPPOSITE SIDES OF SAID SHEET; SAID BLADES HAVING OPPOSITE EDGES DISPOSED LONGITUDINALLY THEREOF; CROSS SECTIONAL STRUCTURE OF EACH BLADE EXTENDING FROM ONE OF ITS EDGES TO THE OTHER EDGE THEREOF AND BEING DISPOSED GENERALLY AT AN ANGLE TO SAID SIDES OF SAID STRIP PORTIONS; ONE OF SAID EDGES BEING SPACED LATERALLY WITH RESPECT TO SAID STRIPS AT ONE RESPECTIVE SIDE OF EACH STRIP, THE OTHER OF SAID EDGES BEING SPACED LATERALLY WITH RESPECT TO A RESPECTIVE OPPOSITE SIDE OF EACH OF SAID STRIPS; EACH BLADE BEING AT EACH END THEREOF INTEGRAL WITH SAID STRIPS THROUGHOUT ITS CROSS SECTION STRUCTURE FROM A MEDIAN PORTION OF THE CROSS SECTION STRUCTURE TO ONE OF SAID EDGES; AND OFFSET STRUCTURE OF EACH BLADE EXTENDING FROM SAID LAST MENTIONED EDGE GENERALLY ON AN ANGLE THERETO AND ON AN ANGLE TO ONE OF THE SAID SIDES OF SAID STRIPS, SAID OFFSET STRUCTURE, THUS, FORMING AN INTEGRAL STRUCTURAL CONNECTION BETWEEN SAID LAST MENTIONED EDGE AND SAID STRIPS AND DISPOSED ANGULARLY WITH RELATION THERETO; FOLDED PORTION OF SAID STRIPS DISPOSED BETWEEN ADJACENT ENDS OF SAID BLADES; THE PLANES OF SAID FOLDED PORTIONS BEING WHOLLY DISPOSED IN SUBSTANTIALLY PARALLEL RELATION TO SAID OPPOSITE SIDES OF SAID STRIPS.