Valve for Musical Instruments.

Реферат: 6536. Valkenburg, B. R. van. Aug. 14, 1914. Actuating; lift valves.-In a double beat valve for an automatic musical instrument, surfaces on the ends of the valve body 3 are adapted to close relatively large openings in disks 5, 6, which also guide the valve spindle. As shown, the closing surfaces are formed by annular flanges. Between its ends, the body is reduced in diameter. The valve stem may rest on a diaphragm 11 clamped by a washer and a flanged ring 13.