Jasper County Democrat, Volume 5, Number 32, Rensselaer, Jasper County, 15 November 1902 — A Big Foghorn. [ARTICLE]

A Big Foghorn.

A large foghorn is to be placed in the gulf of St. Lawrence, 4 feet in diameter and 12 feet long, the sound being produced by sirens. Compressed air is supplied by valves actuated by clockwork. Every two minutes the foghorn will emit a deep roar, followed ten seconds later by a sharp shriek.- There are three air tanks, each 6 feet in diam eter and 12 feet long, and three gasoline engines run compressors to fill these tanks. The plant runs automatically, and a constant pressure is maintained in it. Even tho clock is wound by a compressed air motor.