brush wheel

from The Collaborative International Dictionary of English v.0.48

Brush wheel \Brush" wheel`\
   1. A wheel without teeth, used to turn a similar one by the
      friction of bristles or something brushlike or soft
      attached to the circumference.
      [1913 Webster]

   2. A circular revolving brush used by turners, lapidaries,
      silversmiths, etc., for polishing.
      [1913 Webster]