A new or improved appliance for indicating the notes for the playing of pianoforte pieces

摘要

173,785. Moorey, E. E. Oct. 6, 1920. Chord and note indicators; music holders; notation.-In a device for indicating the notes to be played on a pianoforte, wherein the music consists of dots, each in line with the corresponding key, on a sheet which is of the full width of the pianoforte and which is vertically fed from one roller to another by a motor as F at a controlled speed, the sheet K is led over a longitudinal strip H, and a cursor, consisting of a longitudinal wire I, indicates when the keys G are to be struck.