{TAIL ~ picker means} for picking successive documents from {HEAD ~ said input hopper} and advancing them via said advance means along a given feed path at an adjustable time period after a previous document had been so picked, to thus establish a nominal inter document gap distance value gn  
{ TAIL ~ picker means } for picking successive documents from { HEAD ~ said input hopper } and advancing them via said advance means along a given feed path at an adjustable time period after a previous document had been so picked , to thus establish a nominal inter document gap distance value gn
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH