Robert Foulis, the Daboll Trumpet

The first automated steam-powered foghorn was invented by Robert Foulis, a Scotsman who emigrated to Saint John, New Brunswick, Canada. Foulis is said to have heard his daughter playing the piano in the distance on a foggy night, and noticed the low notes were more audible than the higher notes: he then designed a device to produce a low-frequency sound, as well as a code system for use with it. After repeated representations to the New Brunswick legislature, Foulis's fog signal was installed on Partridge Island in 1859 by a T. T. Vernon-Smith; Foulis himself was involved in legal battles over his invention for the remainder of his life.[3]

Personal injury claims
duyaofei