Device to identify chords on a keyboard instrument and key mecha

Details Device to identify chords on a keyboard instrument and key mecha Device to identify chords on a keyboard instrument and key mecha

1977-01-24

1979-01-09

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

74483R, 200 50C, 235145R, H01H 920, G10C 312

Patent

active

041339894

ABSTRACT:
Operation of a pushbutton or key mechanism by the operation of a single pushbutton or key through circuitry which may include fiber optics signals all keys on the keyboard included in the particular chord. The device may be built in or simply attached to the keyboard instrument. The keys are spring, and string or wire operated to return a key to its inoperative position when the next key is pressed down.

REFERENCES:
patent: 1870304 (1932-08-01), Wentzel
patent: 2821582 (1958-01-01), Kimball et al.
patent: 3109587 (1963-11-01), Rooks et al.
patent: 3746802 (1973-07-01), Sandi et al.
patent: 4074089 (1978-02-01), Mitsugi et al.

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