Robert Gaskins Posted February 29, 2004 Share Posted February 29, 2004 The concertina keyboard system known today as the "Hayden" system, which was independently discovered by Brian Hayden and patented by him in 1986, had also been discovered and patented 90 years earlier by a Swiss inventor named Kaspar Wicki, only twelve years after Maccann's patent. Wicki's 1896 Swiss patent (CH13329) is clear and unambiguous, with a keyboard diagram labeled in standard musical notation. (Göran Rahm gave me the tip on this.) A full discussion, including a scan of the patent, is on the web at www.maccann-duet.com/wicki/wicki-system-1896.htm Quote Link to comment Share on other sites More sharing options...
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