1977-12-19
1979-05-01
Franklin, Lawrence R.
Music
Instruments
84DIG25, G10C 314
Patent
active
041517741
ABSTRACT:
The organ pedal board includes a plurality of keys each having a magnet adjustably mounted on one end thereof for actuating the reed switch. Each reed switch is disposed at an angle of 45.degree. relative to the vertical plane of movement of each key with the upper most end of each reed switch being disposed adjacent to but below the magnet when the key is in rest position. Each magnet is comprised of an oblong piece of rubber or plastic ferrite material secured to the head end of a screw which is threaded into the end of a key for rotatable and longitudinal adjustment of the magnet relative to the longitudinal axis of the key. The opposite end of each key is secured to a supporting block by means of a thin flexible strip with the end of the key slightly overlapping and resting on the supporting block for pivotal movement about the edge thereof. One or more hollow elastomeric tubes are secured to the frame of the pedal board and extend transversely of the pedals to provide cushioned limit stops for the pedals.
REFERENCES:
patent: 316023 (1885-04-01), Ellis
patent: 527467 (1894-10-01), Trainer
patent: 589649 (1897-09-01), Dernell et al.
patent: 2848920 (1958-08-01), Lester
patent: 3617600 (1971-11-01), Ohno
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