Multi-point locking systems

摘要

A multi-point locking system has a locking mechanism (12) that includes a retractable latch (16) and a bolt (18). The locking mechanism (12) can be operated to extend and retract upper and lower drive bars (11a, 11b) that operate respective latches (13a, 13b) remote from the locking mechanism (12). An auxiliary lock (14) is provided and can be operated to extend a bolt (25) through a receiver (27) in the upper or lower drive bars (11a, 11b) and through a receiver (27) in an associated face bar (10) to lock the upper drive bars (11a, 11b) against movement and so provide additional security.