The hook portion 74 has a rounded cam surface 80 which will be engaged by the edge of the slotted portion 78 when the cover portion 30 is moved towards a closed portion thereby camming the lever in a clockwise direction as viewed in FIG 5 enabling {TAIL ~ the hook portion} to engage a latching surface 82 of the front cover portion 30 thereby locking the cover portion in a closed position under the action of {HEAD ~ the spring member} 68 
The hook portion 74 has a rounded cam surface 80 which will be engaged by the edge of the slotted portion 78 when the cover portion 30 is moved towards a closed portion thereby camming the lever in a clockwise direction as viewed in FIG 5 enabling { TAIL ~ the hook portion } to engage a latching surface 82 of the front cover portion 30 thereby locking the cover portion in a closed position under the action of { HEAD ~ the spring member } 68
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