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Publication of FR27708EpublicationCriticalpatent/FR27708E/fr
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
B61L5/12—Visible signals
B61L5/14—Form signals, e.g. semaphore arms
B61L5/16—Local operating mechanisms for form signals
B61L5/161—Local operating mechanisms for form signals using electromotive driving means
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FR27708D1923-05-241923-05-24Appareil pour la manoeuvre électrique des signaux de chemins de fer
ExpiredFR27708E
(fr)