Importance

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Abstract

Various earthworking machines make use of an oscillatory blade, such as the herein referred to sod cutter. Instead of employing two handles, one of which raises and lowers the blade and the other of which handles, when tightened, maintains the blade at a selected depth, only a single handle is employed. When the handle is manually moved forwardly, the blade is lowered and when moved rearwardly the blade is raised, but when the single handle is moved to the left the blade is locked at the depth that has been determined by the forward movement of the handle, this handle movement to the left camming a shiftable gear rack into engagement with a fixed gear rack to maintain the adjusted blade depth. Handle movement to the right allows a coil spring to disengage the racks. A stop, when appropriately set, enables the selected depth to be re-established after each raising of the blade whenever no change in blade depth is needed.

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First Claim