Lyro-pianoforte

Lyro-pianoforte keyboard instr. built by Robert Thomas Worton and patented in England on Nov. 16, 1861, with combination jack-and-hammer action. A device similar to a harpsichord jack was affixed to each hammer, and the instr. could be played as either a piano or a harpsichord. See also: vis-pianoforte (176). Sachs, Curt. Reallexikon der Musikinstrumente. Berlin, 1913.