Small DC electric motor 16 is mounted upon the framework and carries {HEAD ~ fan blade} 18 on {TAIL ~ its output shaft} 
Small DC electric motor 16 is mounted upon the framework and carries { HEAD ~ fan blade } 18 on { TAIL ~ its output shaft }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL