The apparatus 1, wherein the latch means comprises {TAIL ~ a latch arm} pivotally mounted for rotation between a latching position in which the said one blade is held in the corresponding slot, and an unlatched position in which said one blade can be moved out of {HEAD ~ the corresponding slot} 
The apparatus 1 , wherein the latch means comprises { TAIL ~ a latch arm } pivotally mounted for rotation between a latching position in which the said one blade is held in the corresponding slot , and an unlatched position in which said one blade can be moved out of { HEAD ~ the corresponding slot }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD