Hub driven device and means and method for making the same

Claim 1

A PULLEY COMPRISING AN OUTER PART INCLUDING A PAIR OF OPPOSED SEGMENTS EACH COMPRISING A WEB PORTION WITH AN OUTTURNED PERIPHERAL ANNULAR V-GROOVE-FORMING FLANGE, EACH WEB PORTION HAVING A CENTRAL TRANSVERSE NONROUND OPENING THEREIN, A HUB MEMBER COMPRISING A TUBE HAVING AN INITIAL OUTER DIAMETER SMALLER THAN THE SMALLEST DIAMETRICAL DIMENSION OF SAID OPENINGS, SAID MEMBER EXTENDING THROUGH SAID OPENINGS, SAID MEMBER BEING UNDER AN AXIAL COMPRESSIVE LOAD BEYOND ITS ELASTIC LIMIT AND INCLUDING A SECTION EXPANDED RADIALLY OUTWARDLY IN THE REGION OF SAID OPENINGS INTO A SHAPE CONFORMING WITH THE OPENINGS TO EFFECT A TORSIONAL INTERLOCK WITH THE WEBS AND EXPANDED RADIALLY OUTWARDLY OF SAID WEBS THEREBY PROVIDING SHOULDERS EMBRACING SAID WEBS THEREBETWEEN, SAID HUB MEMBER BEING RESILIENTLY LOADED AT SAID SHOULDERS AGAINST SAID WEBS IN COMPRESSION AXIALLY OF THE HUB MEMBER.