On one of these hills is one of those precious jobs, called “Semaphores.”
Hear the clatter as we pass the semaphores and switch lights!
Plantation House was also the centre of the semaphores of the island.
The tracks in and about Chicago are cut up with railroad crossings, semaphores, connections and the interlocking switch systems.
Outlined in incandescents, the semaphores of a dozen ships were being worked most industriously.
A sailor expert signalman used his arms as semaphores, and an answer soon was received by our skipper.
In the first case by means of smoke or semaphores, and in the second by bonfires kindled in cressets or on the hillside itself.
In performing this last operation Sam locked all the semaphores, and so rendered his part of the line absolutely impregnable.
Semaphores, while primarily used for day signaling, can be advantageously used at night by attaching lights to the arms.
He does this by means of semaphores operated by telephone selectors over the telephone line.