During movement of {HEAD ~ the key holder} from an initial position to {TAIL ~ a cutting position}, the force transmitting member and leaf spring move together 
During movement of { HEAD ~ the key holder } from an initial position to { TAIL ~ a cutting position } , the force transmitting member and leaf spring move together
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH