fan frame (fanfram)

In organ- building, a frame carrying a set of levers or backfalls whose forward ends are near together and the rear ends wide apart, so that the set radiates like the ribs of a fan. fangle He fongede faste on the feleyghes. Morte Arthure (E. E. T. S.), 1. 3309. But faste late vs founde to fang on oure foo, zone gedlyng on-godly has brewed vs grete angir. York Plays , p. 319.