Electro pneumatic player piano

Details Electro pneumatic player piano Electro pneumatic player piano

1974-04-29

1979-03-27

Franklin, Lawrence R.

Music

Instruments

Automatic

84 60, 84123, 84125, 84129, G10F 102, G10F 112, G10F 506

Patent

active

041459474

ABSTRACT:
The specification discloses a pneumatic player piano which utilizes an electric motor roll drive. The roll drive is actuated by a mechanical switching arrangement which responds to the system vacuum so as to simulate the operation of a conventional air motor. The pneumatic stack is constructed to permit the pouch board and valve boxes of an entire level to be fabricated in a single molding operation. The valves themselves are formed of silicone rubber - and require neither backing, facing nor position adjustment.

REFERENCES:
patent: 814677 (1906-03-01), Doman
patent: 886569 (1908-05-01), Wood
patent: 1053936 (1913-02-01), Van Valkenburg
patent: 1246096 (1917-11-01), Hiscock
patent: 1324700 (1919-12-01), Spencer
patent: 1617300 (1927-02-01), Gulbransen
patent: 1769760 (1930-07-01), Stoddard
patent: 1788561 (1931-01-01), Boettcher
patent: 3117481 (1964-01-01), Cushing
patent: 3472110 (1969-10-01), Slatts et al.

Affiliated with

Also associated with

Rating

Electro pneumatic player piano does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electro pneumatic player piano, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro pneumatic player piano will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1816824