Valve device especially for pneumatically operated player pianos

Details Valve device especially for pneumatically operated player pianos Valve device especially for pneumatically operated player pianos

1975-06-04

1976-11-09

Franklin, Lawrence R.

Music

Instruments

Automatic

84 62, 84 64, 251 612, G10F 102

Patent

active

039903400

ABSTRACT:
A valve device, especially for pneumatically operated pianos and organs, in which the valve device is interposed between a source of suction and pneumatic actuators for the keys of the instrument and under the control of a perforated paper strip. The valve of the present invention is particularly characterized in being readily disassembled for adjustment and service and replacement of parts if necessary.

REFERENCES:
patent: 814677 (1906-03-01), Doman
patent: 901929 (1908-10-01), Wood
patent: 1053936 (1913-02-01), Van Valkenburg
patent: 1064575 (1913-06-01), Waite
patent: 1188716 (1916-06-01), Beitel
patent: 1219104 (1917-03-01), Jameson
patent: 1246096 (1917-11-01), Hiscock
patent: 1536150 (1925-05-01), Schnell
patent: 1652963 (1927-12-01), Walker
patent: 3033068 (1962-05-01), Westfield
patent: 3336843 (1967-08-01), Griswold
patent: 3499368 (1970-03-01), Ballantine

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