t army system the signals are set by hand, but are locked and reliable the service, that it has been found to effect a employed are men of the highest order of ability—men released electrically by the operator in the next tower great saving as against the amount yearly spent in competent to deal… … The Interlocking Machine Controlling Semaphores and Switches. Semaphore, Switch, and Machine Connectors. ' Distant" Signal Set at Danger. " Advance " Signal, Dropped to Indicate Right Track "Home" Signals. Top Blades for Passenger and Clear. Bottom Blades for Freight Tracks. trains. The recent…
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