The carriage is cycled twice during the time {HEAD ~ one carrier} is pulled from {TAIL ~ the elevator} into relatching engagement with the main conveyor 
is pulled from
The carriage is cycled twice during the time { HEAD ~ one carrier } is pulled from { TAIL ~ the elevator } into relatching engagement with the main conveyor
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH