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Blogs

Foghorns – In the Beginning Was the Diaphone . . .

Well, in the beginning was the Lightkeeper’s Voice, Fog Bell, Sirens, Dynamite, Cannons and other assorted methods, and then came the Hand Horn.  First of all was the Powers Brothers Hand Horn used in the days before mechanical equipment. Many were used up until the early 1950s. and were still kept on station in case of emergencies […]

Foghorns and the Changing Coastal Soundscape

 Foghorns and the Changing Coastal Soundscape Technology and politics are changing the tune of the maritime chorus April 20, 2012 | 3:46 PM | By Craig Miller and with thanks to Climate Watch Read the full text version of this story at KQED’s QUEST site. (more photos – retlkpr) East Brother Island, with the 19th-century lighthouse on the left and fog signal […]

The Diaphone Fog Signal

The Diaphone Fog Signal by Jeff Laser reprinted with permission from Terry Pepper and his website Diaphones were a once familiar sound heard throughout the Great Lakes from the early 1920s until the late 1960s / early 1970s when most lighthouses were automated. 120 such installations existed on both U.S. and Canadian waterways in the 1950s. […]

‘F’ Type Diaphone Foghorn c. 1969

– John Coldwell (assistant Keeper to Walt Tansky on Pulteney Point 1969 – 1972) The diaphone is a unique organ pipe. The theory was based on a design for the Wurlitzer pipe organ invented by Robert Hope-Jones dating from 1895. A special tone generator in the organ involved a piston vibrating inside a cylinder, which […]

Book – Chance Brothers Diaphone Manual

  This is a PDF copy of the Chance Diaphone Manual, which explains all the workings of the Diaphone Foghorn, and lists the many versions of the foghorn, their ranges, working pressures, sizes, etc. Click the link above to read or download the book. (Possible)Related posts: Books – Chance Brothers – Early Suppliers of Equipment for Canadian […]