Abstract: The invention alleviates wear on a plow moldboard by achieving a reduction in the effective weight of the moldboard on the roadway. One or more elastic links are interposed between the moldboard and the lifting arm which elevates and lowers the moldboard. The elastic links may be tensioned to such a degree that they serve as a counterweight for the moldboard, transmitting all or most of its weight to the lift arm and the plowing vehicle. The effective weight of the moldboard is thus reduced to such a degree that the lower edge of the moldboard bears against the roadway with little or no force, and it skids or slides along the roadway rather than grinding against it.

Abstract: A coupling between a snow plow and the front of a truck including a housing assembly adapted to be mounted on the truck and a loop and frame member adapted to be mounted on the snow plow. The housing has a convex front surface and a recess in said surface defined by rearwardly converging walls. A hook means is mounted in said recess and is adapted to pivot about an axis between open and closed positions. Means are provided for locking the hook member in its closed position. A frame member is adapted to abut the convex surface on the forward face of the housing member and the loop projects rearwardly from the frame member into the recess where it is held in place by the hook means.