The ring 211 is confined to non rotary motion in such a manner that {TAIL ~ 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 {HEAD ~ the ring} and a line drawn between any two points on the ring is translated 
The ring 211 is confined to non rotary motion in such a manner that { TAIL ~ 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 { HEAD ~ the ring } and a line drawn between any two points on the ring is translated
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH