Music – Instruments – General features
Patent
1976-02-09
1977-10-18
Tomsky, Stephen J.
Music
Instruments
General features
84427, 84428, 84483A, G10C 312
Patent
active
040540790
ABSTRACT:
A keyboard for a piano, organ, or similar instrument in which the keys are arranged in groups of three, each having a pair of flat keys with a raised key inset between. The flat keys are on a common plane in the manner of the white keys of a conventional keyboard, the raised keys being short in length and spaced between the front edge of the flat keys and the back board of the instrument. In one form of the keyboard a second set of raised keys is positioned adjacent the backboard and mechanically coupled to the basic set of raised keys, so that either raised key in a pair may be used to play a particular note for the convenience of fingering. Four groups of three keys represent the twelve tones of the chromatic scale and a related notation system identifies each tone clearly, without the need for sharp and flat symbols. The keys also have a physical relationship to the note positions in the musical notation, which simplifies playing.
REFERENCES:
patent: 334484 (1886-01-01), Stewart
patent: 2406946 (1946-09-01), Firestone
patent: 3057245 (1962-10-01), Lo Duca
patent: 3845685 (1974-11-01), Coles
Publication "The Pianoforte" by E. F. Rimbault Robt. Cocks & Co., London, 1860 p. 107.
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