Piston valved brass-wind musical instrument

Details Piston valved brass-wind musical instrument Piston valved brass-wind musical instrument

1975-10-30

1976-08-10

Franklin, Lawrence R.

Music

Instruments

Wind

G10D 904

Patent

active

039734641

ABSTRACT:
A piston valved brass-wind musical instrument having a plurality of elliptically constricted apertures and of displacements of bore, for example six such apertures and five displacements of bore, in the valves section of its air column. Each of the valves, usually three in number, is offset a precise amount so that a discontinuity is created between the valve bore and the valve casing port. The exact ratio of the offset distance is, from the third valve to the first valve of a three valved instrument, 4:2:1, or 1:2:4.

REFERENCES:
patent: 1367386 (1921-02-01), Hawkins
patent: 1821397 (1931-09-01), Olds
patent: 2798401 (1957-07-01), Miller

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