Source : Webster's Revised Unabridged Dictionary (1913)

Harvey process \Har"vey proc"ess\ (Metal.)
   A process of hardening the face of steel, as armor plates,
   invented by Hayward A. Harvey of New Jersey, consisting in
   the additional carburizing of the face of a piece of low
   carbon steel by subjecting it to the action of carbon under
   long-continued pressure at a very high heat, and then to a
   violent chilling, as by a spray of cold water. This process
   gives an armor plate a thick surface of extreme hardness
   supported by material gradually decreasing in hardness to the
   unaltered soft steel at the back.