Lock with control and main lock

摘要

The lock has a control action and a main lock, both of which have tumblers. The lock casing (1) has, from bottom to top, a control lock-bolt (5), the control tumblers (6) with a transfer ratchet (4), an intermediate cover (8), a main lock-bolt (10), further tumblers (12) with the transfer ratchet (9) and the lock cover (14). The lock casing has a recess (1f) at its lower rear section, in which an additional housing (22) locates. This housing can be fitted with an electromagnetic lock (24-30).