The Collaborative International Dictionary of English v.0.48:

Dispeed \Dis*peed"\, v. t. [Pref. dis- + speed.]
   To send off with speed; to dispatch. [Obs.] --Knolles.
   [1913 Webster]

         Then they dispeeded themselves of the Cid and of their
         mother-in-law, Do?a Ximena.              --Southey.
   [1913 Webster]