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Conrad Stahl
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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
B61L5/20—Audible signals, e.g. detonator audible signalling
B61L5/206—Signalling means for special purposes
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Engineering & Computer Science
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Mechanical Engineering
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Non-Portable Lighting Devices Or Systems Thereof
(AREA)
Abstract
7143. Stahl, C. March 22. Electric-lamp lanterns. -A lamp for railway signalling comprises in combination, a concave mirror b of crystal glass, a curved shade a attached to the mirror, and a detachable glow lamp c, which may be coloured red.
GB191007143D1910-03-221910-03-22Improvements in Railway Signalling Devices.
ExpiredGB191007143A
(en)