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Scientific American, Vol. 62, No. 19 (May 1890) (1890)
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r 700 feet. Switch tender asleep 1 the air brake. When the signal is dropped to safety, Failure of brakes to work. (Caused by engineer throwing and by placing one of these stops in position at each valve lever too far, thereby releasing brakes after ap- the shaft is turned in the opposite… … Fig. 1. -LANDSLIDE-TRACKMAN PLACING PORTABLE SAFETY STOP IN Fig. 2. OPEN DRAWBRIDGE-SAFETY STOP HOLDING TRAIN. POSITION. ROWELL AUTOMATIC RAILWAY SAFETY STOP, © 1890 SCIENTIFIC AMERICAN, INC.Wire · Apparatus · Munn · Patents · Scientific American · Large · Otto gas · Illustration represents · Carbonic acid · Railway safety · Storage battery · Plate glass · Sliding bar · High pressure · Express money
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