Third means 20 preferably include {HEAD ~ a spring loaded hinge} 34 biased by {TAIL ~ spring} 36 toward an open position, as shown in FIGS 1, 3, 5 and 6 
biased by
Third means 20 preferably include { HEAD ~ a spring loaded hinge } 34 biased by { TAIL ~ spring } 36 toward an open position , as shown in FIGS 1 , 3 , 5 and 6
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH