The upper end of the link 62 is provided with {HEAD ~ a yoke} 70 which is pivotally connected to {TAIL ~ an arm} 71 which is secured to the rotatable member 60 
is pivotally connected to
The upper end of the link 62 is provided with { HEAD ~ a yoke } 70 which is pivotally connected to { TAIL ~ an arm } 71 which is secured to the rotatable member 60
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH