{TAIL ~ The motor} 20 is enclosed within a casing 23 which has a downwardly depending pin 231 pivotally connected to the other end of {HEAD ~ the oscillating arm} 24 
{ TAIL ~ The motor } 20 is enclosed within a casing 23 which has a downwardly depending pin 231 pivotally connected to the other end of { HEAD ~ the oscillating arm } 24
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH