{HEAD ~ This invention} relates to a combination vacuum valve and electric switch for {TAIL ~ rotary operation} 
{ HEAD ~ This invention } relates to a combination vacuum valve and electric switch for { TAIL ~ rotary operation }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL