I remember taking those apart when I was a kid.
The xylophone effect is obtained from a clapper like pendulum
striking different lengths of “music wire rods” the springy type
steel rods that you can buy from a model aircraft hobby shop.
They were probably 1/16 in diameter rods. These rods, arranged
in a circular cage, were fixed firmly on one end only by a
cast lead disk.
The disk was attached to the rattle handle. A garish plastic
cylinder made up the body to enclose the assembly and the
clapper hung from the top cover of the rattle. When the rattle
was twirled the clapper would describe a circular motion to
strike the rods each rod giving off a different note.
I don’t suppose you can use lead in toys nowadays and that
original toy used vacuum formed cellulose acetate plastic which
burned almost too readily.
Kelvin Mok (firstname.lastname@example.org)
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