Locks

摘要

A door lock actuable by a handle at each side of the door has a lock handing system for rendering selectively operative/inoperative a rotary actuator (4) associated with each handle so that the lock can be operated only from one side of the door as selected. The handing system is formed by screws (26) selectively insertable and removable from outside of the casing prior to installation to lock or permit rotation of the corresponding actuator when a lock member has been moved to a locking position, such as by key actuation.