The Collaborative International Dictionary of English v.0.48:

Throwing \Throw"ing\,
   a. & n. from Throw, v.
   [1913 Webster]

   Throwing engine, Throwing mill, Throwing table, or
   Throwing wheel (Pottery), a machine on which earthenware is
      first rudely shaped by the hand of the potter from a mass
      of clay revolving rapidly on a disk or table carried by a
      vertical spindle; a potter's wheel.
      [1913 Webster]