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