I don't have a clue. I will continue looking to see if there is a Victorian or Edwardian definition for the word "Patty" that differs from our use of the word. Certainly this Patty Server is not designed for serving hamburger patties. Whatever its intended use, it is a beautiful piece. I found the piece in two Towle patterns.
Shown in Old English by Towle (8 3/8 inches)
Shown in Paul Revere by Towle (7 1/2 inches)