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
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
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Developing Agents For Electrophotography
(AREA)
Photoreceptors In Electrophotography
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Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography
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