Bicycle free wheel hub with coaster brake

A bicycle free wheel hub with coaster brake comprising an anchor member fixedly mounted to one end of a stationary axle, a driving member journalled on the other end of said axle, a hub shell journalled on said anchor member and said driving member, a clutch cone screwed on an externally threaded and inwardly extending axial extension of said driving member so as to move axially inward and backward by threads along with directions of rotation of said driving member, a plurality of brake shoes arranged so as to be forcibly expanded radially when said clutch cone moves axially inward, said clutch cone having a clutch surface at its outward end and a brake-shoe expanding surface at its inward end, said clutch cone being provided with an axial hole of which inward end is formed with a non-smooth surface, and a plurality of slits formed in an inward portion of said anchor member within which a plurality of detent pieces are respectively disposed with each end extended into said axial hole, said detent pieces being arranged so as to restrict said brake shoes from circumferential motion and so as to be elastically urged radially by means of at least one spring member for frictionally engaging said each end with said non-smooth surface of said clutch cone.