Search Results for: Sound recording apparatus operated by tokens
(p. ) march, , g. j. clime. grand harmonica," with the strings stretched by weights, and struck by hammers. strips of glass ranged in a frame produce sounds also, by means of balls set on wires, or by coining in contact with wheels rapidly revolved by a treadle. nov , . john geib.
bridges are placed nearer to the hammers, but in a just, proportion, according to the musical division of the string." metal bars press down the strings by means of pedals, causing the original bridges to lose their power, thereby producing a more acute sound as the string is shortened by the secondary...
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