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RENE BUJON
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RENE BUJON
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Publication of FR392367ApublicationCriticalpatent/FR392367A/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
B61L5/166—Local operating mechanisms for form signals using electrically controlled gravity operated driving means
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR392367D1908-07-171908-07-17Appareil à poids pour manoeuvre de signaux
ExpiredFR392367A
(fr)