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Application filed by Petar G Nikolov, Mitko G Petrov, Ilija B ApostolovfiledCriticalPetar G Nikolov
Priority to BG9395791ApriorityCriticalpatent/BG50393A3/en
Publication of BG50393A3publicationCriticalpatent/BG50393A3/en
This device is intended for additionally securing doors with massive door-cases. It has a simple and easily-implemented construction and enhanced reliability, because it ensures door-locking at two other places. The device comprises a lock and jointly-connected levers (1). On one edge the levers connect with thumbs (5) through springs (6) and leading bushes (7). The thumbs have the capacity to be placed in door holes. The other edge of the levers is in contact with the tongue (8) of the door lock.
BG9395791A1991-03-011991-03-01Device for additional locking of doors
BG50393A3
(en)
DEVICE TO ADAPT A PANIC LOCK TO THE MEANING OF OPENING A DOOR, PREPARE THIS LOCK TO OPEN ONLY ON ONE SIDE AND TEMPORARILY ENABLE THE OPENING FROM THE OPPOSITE SIDE
Security device preventing door lock breakage - involves lock bolt having sliding engagement in movement direction with fixed pin on door frame and outside of lock plate