Diaphone
From Wikipedia, the free encyclopedia
The diaphone was invented in Canada and used for producing air fog signals. In the early 1900’s the diaphone was introduced in the United States. A diaphone is a fog signal operated by compressed air that makes signals consisting of two tones, one high and one lone characterized by the “grunt” that ends each note.
A diaphone is a fog signal operated by compressed air that makes signals the “standard” diaphone gives a heavy “grunt” tone, and the two tone that produced a high and low tone. [1]
These signals served as an alarm of some form for lighthouses and diaphones were even used as fire alarms sending out coded blasts to firemen. [2]
- For the organ pipe, see Diaphone pipes
- For the linguistic term, see Diaphone (linguistics)
- For the Fire alerting horn, see Gamewell diaphone
