This allows conveyors to remain at fixed elevations and merely change {TAIL ~ the site} at which {HEAD ~ the workpieces} are picked up in the case of a loading mechanism from a feed conveyor and the site where workpieces are deposited on a conveyor for an unloading operation 
at are picked up
This allows conveyors to remain at fixed elevations and merely change { TAIL ~ the site } at which { HEAD ~ the workpieces } are picked up in the case of a loading mechanism from a feed conveyor and the site where workpieces are deposited on a conveyor for an unloading operation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL REL OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL 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