Musical Inventions by Kathy Ceceri

Author:Kathy Ceceri
Language: eng
Format: epub
ISBN: 9781680452334
Publisher: Maker Media, Inc
Published: 2017-03-31T16:00:00+00:00

Music Box Engineering

Music boxes are known for their tinkly sound. But wind-up music boxes are also finely tuned machines. Turn the key to tighten a spring, open the lid to release the catch that lets the spring unwind, and gears and flywheels start to move the mechanism at just the right speed. The music is produced by a rotating cylinder studded with tiny pins. As the cylinder (known as the drum) slowly spins, the pins pluck the teeth of a metal comb. The teeth on each comb are different lengths and thicknesses, depending on the notes needed for the melody each box plays. Every part of a music box takes artistry and expertise to create.

Figure 3-32: The inner workings of an antique music box. You play it by winding up the spring (in the round casing at the upper right). This turns gears that make the drum with the small pins rotate, plucking the tines of the metal comb as it slowly spins.

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