In {HEAD ~ order} to secure {TAIL ~ locking bar} 1 in its relative position to the locking bar hooks and to avoid the possibility of an accidental displacement from such position, bolt 2 may be circumferentially or rotatively fixed relative to door 6 
to secure
In { HEAD ~ order } to secure { TAIL ~ locking bar } 1 in its relative position to the locking bar hooks and to avoid the possibility of an accidental displacement from such position , bolt 2 may be circumferentially or rotatively fixed relative to door 6
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