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Scientific American, Vol. 89, No. 5 (August 1903) (1903)
leaf 3
. the interrupters are supplied Experiments, have been made in the North Sea with with a mechanism enabling the operator to open or two steamers, one furnished with the fog signal and close the valves at will. Around the ring of the indi- the other without it. The last was ordered to give cator are… … States. The experiment was not, however, carried to a conclusion. THE RECEIVER. THE EDEM FOG SIGNAL. © 1903 SCIENTIFIC AMERICAN, INCManufacture · Buffalo · Mechanical · Munn · Scientific American · Patents · Nitric acid · Iron ore · Mechanical draft · Steam shovels · Buffalo forge · Traction rope · Steam Shovel · Cubic yards · Electric furnace
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