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
B61L5/168—Local operating mechanisms for form signals using funicular driving means
Dispositif pour empêcher le saut de mise en circuit en cas d'erreurs de manoeuvre de verrous de coupure pour interrupteurs de puissance électriques