When {HEAD ~ the lever controlling unit} 35 operates under {TAIL ~ the instructions} from the sequential controller 12, the lever swings clockwise to move the nip roller 29 away from the surface of the web 7 to the unloading position 
operates under
When { HEAD ~ the lever controlling unit } 35 operates under { TAIL ~ the instructions } from the sequential controller 12 , the lever swings clockwise to move the nip roller 29 away from the surface of the web 7 to the unloading position
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH