Patent ID: 7958943

Claim:
A ground working implement comprising: a housing; a wheel assembly for supporting the housing in rolling engagement with a ground surface, the wheel assembly comprising a wheel and a wheel axle, wherein the axle extends outwardly from, and defines a rotational axis of, the wheel; a wheel mounting block associated with the housing, the block defining a plurality of bores vertically spaced-apart from one another and arranged in two or more horizontally offset rows, each bore configured to selectively receive the wheel axle to place the wheel assembly at a corresponding plurality of vertical locations relative to the housing, the block further defining a passageway extending through the block and intersecting each of the plurality of bores; and a plate positively retained within the passageway, the plate defining a plurality of elongate cutouts formed through the plate such that an elongate cutout is positioned adjacent each bore of the plurality of bores, wherein the plate is translatable within the passageway between a disengaged position, where each cutout is selectively positioned relative to its respective bore to allow longitudinal movement of the axle within the bore, and an engaged position, where a portion of the plate surrounding each cutout is selectively positioned to engage the axle to prevent longitudinal movement of the axle relative to the respective bore.