Patent ID: 8573320

Claim:
A turf edger for use in combination with a self-propelled traction unit for cutting a clean edge along a boundary on the ground between a turf surface and a soft non-turf surface, which comprises: (a) an edger frame carried by the traction unit; (b) an upwardly facing, substantially U-shaped edging blade formed by a bottom wall and a pair or spaced side walls, wherein the bottom wall and side walls have front cutting edges, and wherein the edging blade is pivotally mounted on the edger frame for pivoting about a substantially horizontal pivot axis; and (c) a drive system for oscillating the edging blade back and forth in an angular arc relative to the frame, wherein repeating cycles of the oscillating motion of the edging blade cuts parallel slits into the turf and non-turf surfaces and the bottom wall cuts through subsurface root growth between the slits to free a strip of material along the boundary comprised of portions of the turf surface and portions of the non-turf surface, whereby a clean edge between the turf and non-turf surfaces is provided after the strip of material that has been freed by the oscillating motion of the edger blade is cleared away from the boundary.