If the articles eventually do not fall through the openings, {TAIL ~ a jet} or {HEAD ~ other suitable device} is provided for removing the articles from the rim 
If the articles eventually do not fall through the openings , { TAIL ~ a jet } or { HEAD ~ other suitable device } is provided for removing the articles from the rim
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH