According to the pilot, shortly after departure from runway 19 with a load of cargo on board, the engine lost power. The pilot executed a forced landing, impacting into a grassy area adjacent to the departure end of runway 19. During the impact sequence, the landing gear was separated and the propeller was bent. Examination of the engine showed no defects that would have prevented it from producing power. Conditions conducive to carburetor icing existed at the time of the accident.