Music box motion generation mechanism

Details Music box motion generation mechanism Music box motion generation mechanism

1992-12-14

1994-01-04

Gellner, Michael L.

Music

Instruments

Automatic

74 53, 74567, G10F 106

Patent

active

052762718

ABSTRACT:
Improved music box motion generation mechanism is equipped with a wave-shaped cam ring housed at the bottom of the upper housing cavity of a mount case and a rotation disc disposed on top of the cam ring and having a number of symmetric through holes disposed along the periphery thereof and a central through hole located at the center thereof. With each symmetric through hole is associated a fixing member by way of a nut. An actuation rod having a follower disposed at the bottom end thereof is moveably engaged with the fixing member, the rod can move up and down and spin 360 degrees around and travel along with the fixed wave-shaped cam ring. A main shaft is disposed through the central through hole of the rotation disc with its bottom end connected to the music producing and driving shaft of a driving case. A spring tightening knob made in the shape of an umbrella is disposed at the top end of the main shaft whereby the rotational actuation of the knob can make the decoration article attached to each actuation rod spin around and move in circle with the rotation disc and move up and down simultaneously.

REFERENCES:
patent: 3308705 (1967-03-01), Shinnick
patent: 5134795 (1992-08-01), Wang
patent: 5161420 (1992-11-01), Feng

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