Construction of music box

Details Construction of music box Construction of music box

1994-03-15

1996-08-06

Spyrou, Cassandra C.

Music

Instruments

Automatic

G10F 106

Patent

active

055435777

ABSTRACT:
The comprehensive improvement of a music box employs a hood-styled structure (1) which is a connection between the spring case (6) and the speed regulating support (7). The perpendicular trailing brace of the hood-styled structure has eliminated the cantilever beam structure of the prior speed regulating support. A centrifugal periphery damping friction disk (21) is set below the top of said hood-styled structure (1). Three fixed connection holes on the lower edge of the hood-styled structure (1) are used to have the structure fixed on the frame (5). Compared with the prior art, the boss which may cause interference with the sound is now located in a reasonable position. The extended shaft of the music drum (3) is connected with the music drum with the spiral direction of the thread on the extended shaft being opposite to the rotary direction of the music drum. Thus, the reliability is increased, the quality of the sound is improved and the cost is reduced.

REFERENCES:
patent: 4401006 (1983-08-01), Sekiguchi
patent: 4458573 (1984-07-01), Isaka
patent: 4557173 (1985-12-01), Isaka
patent: 4570524 (1986-02-01), Isaka et al.
patent: 4890528 (1990-01-01), Kamijima

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