The ring 211 is confined to non rotary motion in such a manner that each point on the ring 211 will travel in a circular path which is different from the circular path which is traveled by every other point on the ring and {HEAD ~ a line} drawn between {TAIL ~ any two points} on the ring is translated 
drawn between
The ring 211 is confined to non rotary motion in such a manner that each point on the ring 211 will travel in a circular path which is different from the circular path which is traveled by every other point on the ring and { HEAD ~ a line } drawn between { TAIL ~ any two points } on the ring is translated
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH