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Publication of FR560585ApublicationCriticalpatent/FR560585A/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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FR560585D1922-12-231922-12-23Perfectionnements apportés à l'appareil répétiteur des signaux en service sur les chemins de fer
ExpiredFR560585A
(fr)
Perfectionnements aux brosses de contact employées conjointement avec les crocodiles dans les systèmes de répétition des signaux sur les machines de chemins de fer