A feeding device 4 wherein {TAIL ~ said filling element} is formed as {HEAD ~ a filling flap} 
A feeding device 4 wherein { TAIL ~ said filling element } is formed as { HEAD ~ a filling flap }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD