Flogging hammer

from The Collaborative International Dictionary of English v.0.48

Flogging \Flog"ging\, a. & n.
   from {Flog}, v. t.
   [1913 Webster]

   {Flogging chisel} (Mach.), a large cold chisel, used in
      chipping castings.

   {Flogging hammer}, a small sledge hammer used for striking a
      flogging chisel.
      [1913 Webster]