wincing machine

from The Collaborative International Dictionary of English v.0.48

Wincing \Win"cing\, n.
   The act of washing cloth, dipping it in dye, etc., with a
   wince.
   [1913 Webster]

   {Wincing machine}.
   (a) A wince. --Ure.
   (b) A succession of winces. See {Wince}. --Knight.
       [1913 Webster]