means including a single motor for imparting {HEAD ~ rotation} to {TAIL ~ both} said fan blade and said rotatable means 
to
means including a single motor for imparting { HEAD ~ rotation } to { TAIL ~ both } said fan blade and said rotatable means
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH