Security-door lock

摘要

The lock has locking and barrier tumblers actuated by the key, and a catch actuatable with the bolt in the locked position. The catch is actuated via a changeover lever (sic) driven by the tumbler mechanism and also by a lug on a profiled cylinder. The latter is in turn actuated by key from the outside and turnbutton from the inside. The catch is arrested in the extended position by a barrier lever, which can be released both via the changeover lever and a lug on the profiled lock cylinder. There can be a boss fixed to the barrier lever and which engages behind a cam on the catch spindle with the catch in the arresting position.