Shootbolt assembly with transmission members which are in tension during locking

A lock assembly for a door or window comprising a pair of shootbolts 7 linked to a central gear box/drive mechanism 4 by two pairs of elongate connecting elements 8 which move the bolts between the locked and unlocked positions. Each of the bolts is formed with an extension 26 carrying a rack 27 whi...

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Bibliographic Details
Main Author JOHN FRANCIS LAMBERT
Format Patent
LanguageEnglish
Published 10.11.1999
Edition6
Subjects
BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS ORWINDOWS
FIXED CONSTRUCTIONS
KEYS
LOCKS
SAFES
WINDOW OR DOOR FITTINGS
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Summary:A lock assembly for a door or window comprising a pair of shootbolts 7 linked to a central gear box/drive mechanism 4 by two pairs of elongate connecting elements 8 which move the bolts between the locked and unlocked positions. Each of the bolts is formed with an extension 26 carrying a rack 27 which is associated with a second rack 28 by a gear wheel 29 lying within end guides 10. When the assembly is locked, the connector 8 that is indirectly connected to each shootbolt is under tension, and a locking force is applied to each shootbolt through the rack mechanism in the end guide 10 which acts to reverse the direction in which the force is applied, hence locking the shootbolt.
Bibliography:Application Number: GB19980009066