{HEAD ~ The stop} comprises a rod 37 which is slidable in {TAIL ~ a bearing} 38 mounted on the carrier 18 
{ HEAD ~ The stop } comprises a rod 37 which is slidable in { TAIL ~ a bearing } 38 mounted on the carrier 18
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH