Music – Instruments – Stringed
Patent
1999-02-11
1999-12-07
Nappi, Robert E.
Music
Instruments
Stringed
84304, G10D 314
Patent
active
059987138
ABSTRACT:
A tuning peg incorporates an internal planetary gear reduction mechanism so that a stringed instrument, such as the cello, violin or viola, can be easily and precisely tuned. In order to change the pitch of a string, the head of each peg is rotated which in turn rotates the carrier that holds the string. Turning the head drives a toothed input shaft that runs the entire length of peg. The input shaft engages and rotates a plurality of planetary gears that engage a ring gear that is affixed to the peg box. Thus, rotation of the head rotates the carrier that changes the tension on the string, but the number of turns of the head required to rotate the carrier once is a multiple of one so that the carrier can be rotated more easily and the instrument can be tuned more precisely.
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Ashton Wesley Scott
Mann Michael A
Nappi Robert E.
Wever Michael E
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