A stub shaft 53 extends through the flanges 51 and 52 to form {TAIL ~ a hinged connection} between {HEAD ~ the frame} 20 and the plate 48,  
A stub shaft 53 extends through the flanges 51 and 52 to form { TAIL ~ a hinged connection } between { HEAD ~ the frame } 20 and the plate 48 ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH