Improvements in locks

• Main Authors: JOHN RUSSELL WATTS, DAVID GREEN BURY
• Format: Patent
• Language: English
• Published: 05.03.2009
• Subjects: ACCESSORIES THEREFOR; FIXED CONSTRUCTIONS; HANDCUFFS; KEYS; LOCKS; SAFES; WINDOW OR DOOR FITTINGS

A lock for a moveable wing defined by an interior and an exterior side, the lock including an engageable means, a casing mountable relative to the interior side, engaging means including at least one engaging arm supported relative to the casing each said engaging arm displaceabie to an operative configuration to be engageable with the engageable means to restrain the wing from displacing in an opening direction, operating means to cause each engaging member to displace to and from the operative configuration including a hand operable operating member operably connected by slide means to each engaging member, said slide means comprising at least one displaceabie slide and characterised by an operative configuration corresponding to each engaging member being in the operative configuration, the operating means further including a cylinder having a key operable barrel operably connected to the slide means by an angularly displaceabie first member, the slide means and each engaging member being displaceabie to and from their respective operative configurations by operation of the operating member and by operation of the cylinder, the barrel characterized by a pivotal axis that intersects the pivotal axis the first member.