Patent ID: 7798242

Claim:
A walk behind-type motorized sod harvester comprising: a chassis; a handle operatively attached to the chassis for guiding the sod harvester; a tool mounted to a lower portion of the chassis and adapted to be engaged for performing sod cutting operations and adapted to be disengaged for transporting the harvester; an engine operatively mounted on the chassis to power at least one wheel drivingly coupled through a transmission, the transmission and the at least one wheel being operatively mounted on the chassis; the transmission comprising at least one high gear adapted to transport the harvester and at least one low gear adapted to be operable when the tool is engaged; and a shift interlock mechanism, the shift lock mechanism having a lever connected to the tool and a cam member wherein the shift lock mechanism is adapted to automatically shift the harvester into the at least one low gear when the tool is engaged while the transmission is in the at least one high gear.