Automatic player piano

Details Automatic player piano Automatic player piano

1988-05-17

1989-10-17

Perkey, W. B.

Music

Instruments

Automatic

84246, G10F 102, G10C 320

Patent

active

048739057

ABSTRACT:
An automatic player piano comprises (a) a keyboard provided with a plurality of keys each having a front end portion, an intermediate portion and a rear end portion, the front end portion being pressed by a player for requesting a sound, (b) a key supporting unit provided on a key bed and having a front rail capable of engagement with the front end portion, a back rail capable of engagement with the rear end portion and a balance rail provided between the front rail and the back rail and rockably supporting the intermediate portion, (c) a sound producing mechanism associated with each of the keys and operative to produce the sound, (d) a plurality of key action mechanisms each engagable with the rear end portion of each key and operative to transfer a motion of the key to the sound producing mechanism, and (e) a plurality of key actuator units each provided between the front and balance rails of the key supporting unit and operative to pull down each of the keys for requesting a sound upon activation thereof. The hollow space between the front rail and the balance rail is substantially equal over various piano, so that a common key actuator unit assembly may be incorporated in the automatic player piano of different models.

REFERENCES:
patent: 784508 (1905-03-01), Weber
patent: 1138103 (1915-05-01), Hauss et al.
patent: 4338847 (1982-07-01), Brennan
patent: 4351221 (1982-09-01), Starnes et al.
patent: 4362934 (1982-12-01), McLey
patent: 4513652 (1985-04-01), Muramatsu et al.
patent: 4592262 (1986-06-01), Yang

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