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