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