Music – Accessories – Teaching devices
Patent
1977-12-09
1979-08-07
Franklin, Lawrence R.
Music
Accessories
Teaching devices
340706, G04F 502
Patent
active
041634098
ABSTRACT:
An optical metronome using sheets of music of non-sagging sheets of translucent material with notes spaced according to their value and vertically aligned measures on a display panel of light columns formed of vertical bars of triangular cross-section in white reflectors with an angular air gap and a light source for each bar. Circuitry coordinates sequential lighting of the bars in proper musical tempo and properly placed downbeat and is also attached or attachable to electronic organ circuitry or stands alone with automatic turn-off of lights to the bars if organ not counting.
REFERENCES:
patent: 3492659 (1970-01-01), Lee
patent: 3776615 (1973-12-01), Tsukamoto et al.
patent: 3839713 (1974-10-01), Urade et al.
patent: 3996833 (1976-12-01), DEL Castillo
patent: 4044346 (1977-08-01), Akahane et al.
patent: 4065754 (1977-12-01), Miura et al.
Del Castillo Juan M.
Findlay Donald J.
Neumann Arthur E.
Rumer, Jr. David O.
Del Castillo Juan M.
Flocks Karl W.
Franklin Lawrence R.
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