Music – Accessories – Teaching devices
Patent
1980-03-24
1982-03-02
Franklin, Lawrence R.
Music
Accessories
Teaching devices
235 78R, 235 88R, G09B 1502
Patent
active
043174043
ABSTRACT:
A hand-operated musical rhythm pattern generator includes two independently rotatable discs mounted in a holder. The discs have complementary rhythm patterns printed on the peripheries thereof, a portion of which is visible through a window in the holder. The rhythm patterns displayed may be randomly changed by rotating one or both discs any desired angular amount.
REFERENCES:
patent: 1792324 (1931-02-01), Roelike
patent: 2427976 (1947-09-01), Posson
patent: 2512915 (1950-06-01), Boutwell
patent: 3592099 (1971-07-01), Gibby
patent: 3621750 (1971-11-01), Leonard
patent: 3728932 (1973-04-01), Leonard
patent: 4002097 (1977-01-01), Leonard
patent: 4074607 (1978-02-01), Bond
patent: 4128037 (1978-12-01), Montemurro
The Music Trades, Feb. 1972, p. 66.
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