Referring to FIGS 1 and 2, {HEAD ~ roller} 54 is adjustably positioned on {TAIL ~ the contoured surface} 52 of cam 50 by a positioning arm comprising a slotted yoke 60 which embraces connecting rod 56 and roller 54 and is pivotally attached thereto by means of pivot pin 58 
is adjustably positioned on
Referring to FIGS 1 and 2 , { HEAD ~ roller } 54 is adjustably positioned on { TAIL ~ the contoured surface } 52 of cam 50 by a positioning arm comprising a slotted yoke 60 which embraces connecting rod 56 and roller 54 and is pivotally attached thereto by means of pivot pin 58
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH