The Collaborative International Dictionary of English v.0.48:

Copart \Co*part\, v. t. [Cf. Compart]
   To share. [Obs.]
   [1913 Webster]

         For, of all miserias, I hold that chief
         Wretched to be, when none coparts our grief. --Webster
                                                  (1661).
   [1913 Webster]