Auxetophone

Auxetophone A disc player with a compressed air device used to amplify the output. The inventor is usually thought to have been Charles A. Parsons of London (inventor of the steam turbine), who received for it British patents #10,468 and #10,469 in 1903, plus #20,892 in 1904; and he did exhibit a working model of the Auxetophone to the Royal Society in 1904. However, Horace Short, who had been associated with Thomas Edison in Menlo Park, held an earlier British patent: #22,768, of 1898…