Patent ID: 8186906

Claim:
A screed machine for leveling a stone base, comprising: a frame supported for movement over said stone base; a screed assembly extending forwardly from said frame to engage said stone base, said screed assembly including a wedge portion to direct stone base material laterally to opposing sides of said frame, said screed assembly being supported on said frame for vertical movement relative to said frame, said screed assembly further including a mast projecting upwardly therefrom; a receiver mounted on said mast to receive a signal indicative of a desired final grade on said stone base; a jack supported on said frame and being vertically movable from said frame to engage said stone base and elevate said frame and said rollers above the stone base, said jack being located at the center of gravity of said screed machine to permit said screed machine to be balanced on said jack so that said frame can be rotated about a generally vertical axis defined by said jack to effect a redirection of said rollers; an actuator interconnecting said frame and said screed assembly to affect vertical movement of said screed assembly in response to said signal; and compaction apparatus mounted on said frame rearwardly of said screed assembly to compact said stone base after being leveled by said screed assembly.