Abstract: A turf aerator is provided with two separate shafts, each having a plurality of tines mounted thereon for aerating the turf. Each shaft is selectively connected to an output shaft of a motor mounted on the frame of the aerator by two separate drive trains, each having a clutch arrangement therein. A pair of control levers are mounted on a handle assembly for operating the clutches in each drive train. Thus either or both of the tine carrying shafts may be rotated to facilitate a turning operation of the aerator or facilitating the operation of the aerator while traversing a sloping surface.

Abstract: A turf aerator is provided with a pair of drive wheels rotatably mounted on a drive shaft supported in a main frame of the aerator. Each drive wheel is provided with a radially extending flange and a pawl is pivotally mounted on each flange. A pair of sprockets are secured to the shaft for rotation therewith and disposed in engagement with a respective pawl. A drive sprocket is mounted for rotation with the shaft and is operatively connected to the shaft of an aerator assembly and a motor driven shaft by means of a chain interconnecting sprockets on each shaft. The pawls are arranged relative to the sprockets to positively drive the drive wheels in a forward direction while permitting one pawl to ratchet relative to the sprocket in engagement therewith and permitting rotation of the drive shaft in an opposite direction without imparting a drive to said wheels.