The lift includes {HEAD ~ a platform structure} which is mounted to {TAIL ~ an elevator frame} which is then mounted to an elevator housing for vertical movements of the platform structure 
The lift includes { HEAD ~ a platform structure } which is mounted to { TAIL ~ an elevator frame } which is then mounted to an elevator housing for vertical movements of the platform structure
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH