Photograph by Sam Murphy
SUPER TRITONE WHISTLE
THIS JAZZY, COMPRESSED-AIR-POWERED WHISTLE SOUNDS A MIGHTY BLAST.
Decades ago, whistles were used in factories, on railroads, and aboard ships. At noon, whistles of every pitch could be heard informing workers that lunchtime had arrived. Railroad engineers used whistle codes for communication both within the train and with other trains.
According to the National Library of Wales, Adrian Stephens of South Wales invented the first steam whistle in 1833. Stephens was employed at the Dowlais Iron Works, where he devised a steam whistle as a warning device for boilers. The steam whistle ...
Get Make: Technology on Your Time Volume 12 now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
