To provide a humming top generating a chord, a tool for properly varying the combination of sound generator, and a tool for turning the humming top and assembling the humming top.
A plurality of hollow and cylindrical sound generators 2 of different outer diameters each having a square hole in its center and having a sound generation hole 22 at its outer periphery are superposed with the square holes coincident with each other. A shaft bar 1 provided with a flange and a male screw is inserted through the square holes, and a nut 15 is screw-fitted to the male screw to integrate the supposed hollow and cylindrical sound generators 2. A part to which the square hole is fitted of the shaft bar is made to be a square shaft. A bar tool 3 for turning the humming top A has a recess 31 for accepting the shaft bar 1 at its one end, and a hole 32 for pulling through a string 4 wound on the shaft bar 1 of the top A is bored at the center of the recess 31. At the other end of the bar tool 3, a tool with a spanner 33 for clamping a nut 15 of the top A formed is added.
Higashio Masahiro
Torii Kazuhisa
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