Music box spring winding mechanism

Details Music box spring winding mechanism Music box spring winding mechanism

1981-08-05

1983-08-30

Franklin, Lawrence R.

Music

Instruments

Automatic

74577M, 74577SF, 192 46, G10F 106

Patent

active

044010060

ABSTRACT:
The invention is directed to a music box spring drive mechanism comprising a wheel that has a bevel gear on an outer peripheral edge with an inner recess that has ratchet teeth on its peripheral wall of the recess, a spring winding axle cooperates with the wheel to provide a drive for a music making cylinder. A pawl member is centrally located in the recess of the wheel and cooperates with the ratchet teeth to drive the wheel. The pawl comprises a body portion having a thickness corresponding to the depth of the recess, a resilient arcuated portion integrally formed with the body portion with teeth formed on the end of the arcuated portion. The teeth are provided with a first contact portion and a second contact portion which are in contact with a ratchet tooth formed along the inner wall of the recess.

REFERENCES:
patent: 40086 (1863-09-01), Taylor
patent: 3390599 (1968-07-01), Komatsu

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