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Publication of FR558426ApublicationCriticalpatent/FR558426A/fr
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
B61L3/04—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling mechanically
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FR558426D1922-11-091922-11-09Dispositif automatique destiné à obliger le mécanicien d'une locomotive à s'apercevoir de la fermeture d'un disque
ExpiredFR558426A
(fr)