What is the pair of arms attached to the spindle of a spinning frame, over which the thread passes to the bobbin; -- so called from their swift revolution. See Fly, n., 11 called?

flyer — The pair of arms attached to the spindle of a spinning frame, over which the thread passes to the bobbin; -- so called from their swift revolution. See Fly, n., 11. (Webster's 1913.)

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