Music – Accessories – Teaching devices
Patent
1984-06-08
1986-11-04
Fuller, Benjamin R.
Music
Accessories
Teaching devices
84485SR, G09B 1508
Patent
active
046204717
ABSTRACT:
A music chart for determining the constituent tones of a plurality of chords and the chord name of a given series of tones is disclosed. The chart is comprised of a disc having at its outer circumference a plurality of spaced-apart chord names. Each chord name lies along a radius of the disc, each radius having delineated thereon a plurality of markers radially spaced from each other. A slide member having an elongated narrow rectangular window is slidably and pivotally superimposed on the disc by means of a central rivet projecting through the window. The slide member has at its lower side a graphic representation of a keyboard which is lettered according to conventional keyboard construction and includes at least two octaves. By rotating and sliding the slide member over the disc a chord name and its constituent tones are easily readable in the window.
REFERENCES:
patent: 1822457 (1931-09-01), Ferguson-Roberts
patent: 2193885 (1940-03-01), Riley
patent: 2332842 (1943-10-01), Champion
patent: 2542235 (1951-02-01), Clopton
patent: 2649008 (1953-08-01), Bova et al.
patent: 3784797 (1974-01-01), Kroll
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