Compensating valve system for brass instruments

Details Compensating valve system for brass instruments Compensating valve system for brass instruments

1988-01-05

1991-10-01

Franklin, Lawrence R.

Music

Instruments

Wind

84388, 84390, 84382, G10D 904

Patent

active

050522612

ABSTRACT:
Improved apparatus for providing a chromatic scale with accurate intonation for valved brass instruments is disclosed. Two embodimeents of the invention that compensate for the deficiencies of the valve systems of the prior art are described for both four and five valve systems. For four valves systems, a master valve is used to lower the pitch of the instrument by two tones, and for five valve systems, a master valve lowers the pitch by two and one-half tones. The invention, therefore, makes possible complete compensation over the range of the instrument and improved tone quality.

REFERENCES:
patent: 2665606 (1954-01-01), Wohlrab
patent: 3554072 (1971-01-01), Hirsbrunner
patent: 4336738 (1982-06-01), Alexander
Draper: "The Besson Compensating System Fully Explained", Besson & Co., Ltd., London, 1953.

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