A device which automatically stops trains which have passed danger signals has been tested out successfully in the presence of representatives of the Lackawanna, Erie, and New York Central railroads. Experts declare that the device, invented by George P. Finnigan, who died immediately after completing the initial tests in 1924, insures 100% safety in railroad operations.
The principle on which the invention rests is simple. A permanent magnet is buried in the track at a point opposite each semaphore. A pick-up coil is placed under part of the locomotive. When passing over...
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