Friction at the jack and knuckle interface in a grand piano eliminated

Friction at the jack and knuckle interface in a grand piano eliminated

A grand piano action the jack having a projection acting against the knuckle dependent from the hammer shank carrying the piano hammer by a counter weight carried by the jack eliminating the spoon and the regulating button and the jack spring pressing against the jack causing the traditional excessi...

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1. Verfasser: WROBLEWSKI RICHARD
Format: Patent
Sprache:eng
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ACOUSTICS
MUSICAL INSTRUMENTS
PHYSICS
PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICALINSTRUMENTS WITH ONE OR MORE KEYBOARD
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description A grand piano action the jack having a projection acting against the knuckle dependent from the hammer shank carrying the piano hammer by a counter weight carried by the jack eliminating the spoon and the regulating button and the jack spring pressing against the jack causing the traditional excessive friction at the jack and knuckle interface. Friction is totally eliminated from the conventional grand piano action by the capstan screw on the piano key lifting the wippen lever near the pivot of the jack. Patents relating to the problem of excessive friction. Finholm U.S. Pat. No. 4,774,868. Steinway U.S. Pat. No. 5,511,454-U.S. Pat. No. 5,911,167. Baldwin U.S. Pat. No. 6,232,537.
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Friction is totally eliminated from the conventional grand piano action by the capstan screw on the piano key lifting the wippen lever near the pivot of the jack. Patents relating to the problem of excessive friction. Finholm U.S. Pat. No. 4,774,868. Steinway U.S. Pat. No. 5,511,454-U.S. Pat. No. 5,911,167. Baldwin U.S. Pat. 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subjects ACOUSTICS
MUSICAL INSTRUMENTS
PHYSICS
PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICALINSTRUMENTS WITH ONE OR MORE KEYBOARD
title Friction at the jack and knuckle interface in a grand piano eliminated
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