Music – Instruments – Wind
Patent
1975-07-14
1976-11-09
Franklin, Lawrence R.
Music
Instruments
Wind
G10D 904
Patent
active
039903427
ABSTRACT:
A piston valve type instrument has mechanical means for continuous adjustment of the upstroke and downstroke of the valves which provides for improved playing response. In addition, a method of improving the response utilizing such continuous adjustment includes deliberately introducing a misalignment of the valve ports if the playing response so indicates.
REFERENCES:
patent: 911637 (1909-02-01), Adkins
patent: 1367386 (1921-02-01), Hawkins
patent: 2149714 (1939-03-01), Wornell
patent: 2511255 (1950-06-01), George
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