Music – Accessories – Teaching devices
Patent
1976-04-12
1977-08-09
Franklin, Lawrence R.
Music
Accessories
Teaching devices
G09B 1500
Patent
active
040403246
ABSTRACT:
A chord indicator for keyboard instruments comprises an elongated panel having lights therein which will be aligned with each key when the panel is placed adjacent the keyboard. Two rows of lights are provided, one indicated the white keys and the black keys as sharps and the other indicating the black keys as flats. A chord selector mechanism comprises a base having spaced contacts thereon corresponding to the lights on the panel and a carriage movable along the base having contacts corresponding to the notes of selected chords. Chord selector switches permit selection of the type of chord to be displayed and the location of the carriage on the base permits selection of the root note of the chord. Electrical means permit the chord to be indicated as having either sharps or flats as appropriate for the selected chord. In use a chord type is selected, a root note is selected, and the lights on the panel aligned with the keys corresponding to the notes of the selected chord will be illuminated.
REFERENCES:
patent: 2820391 (1958-01-01), Janssen et al.
patent: 3335630 (1967-08-01), Schmoyer
patent: 3415152 (1968-12-01), Gullickson
patent: 3460426 (1969-08-01), Jensen
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