Bolt locking system for window or door has coupling element movable with respect to swing arm and movable catch can engage in slot in swing arm

摘要

An arm (14) may connect the edge of the door leaf (1) to the door frame (2). The arm has a central longitudinal slot (13) and has a joggle in the central portion so that a movable pin (11) on the edge of the door leaf can engage in the slot or come free of it. The pin is mounted on a drive rod (9). The lever may be pivoted (15) on the door frame at one end and may engage a movable catch at the other end.