In an aerator including a chassis mounted on wheels, a tine depth stop mechanism includes a base mounted on the chassis. A side wall is fixed to the base and has a plurality of apertures therein. A stop arm is movably mounted with respect to the side wall and has an abutment. The abutment has a periphery. A tine weldment is attached to the stop arm, and a tine wheel is rotatably mounted to the tine weldment. A pin passes through one of the apertures of the side wall and engages the periphery of the abutment of the stop arm. Upon a downward movement of the tine wheel, the stop arm moves with respect to the side wall until the pin abuts the periphery of the abutment, thus adjusting a maximum depth of the tine wheel below the chassis.

A tension control mechanism includes a drive wheel and a jack wheel rotatably mounted with respect to a chassis of a self-propelled power tool. An idler arm is pivotally mounted to the chassis and carries an idler wheel. A flexible drive member entrains the drive wheel and the jack wheel and drives the idler wheel. First and second bias members bias the idler arm in opposing rotational directions, which move the idler wheel toward or away from the flexible drive member to respectively increase or decrease tension. A ratchet arm is attached to the idler arm has a hook. A ratchet head is fixed to the chassis and has ratchet teeth for engaging the hook to permit relative motion between the hook and the ratchet teeth to increase tension, and to limit relative motion between the hook and the ratchet teeth to prevent an excessive decrease in tension.

An agricultural tillage implement has a vertical tillage section and an aerating section behind the vertical tillage section, each extending substantially perpendicular to the pull direction of the implement. Individual vertical tillage elements, such as disc blades, can be indexed with individual rotary tine assemblies of the aerator section so that discrete holes formed by the aerator section are positioned between substantially continuous slits formed by the vertical tillage section. A ground deposit system is provided for depositing a component on the ground and may be configured for conducting and depositing a granular component, such as seeds, fertilizers, minerals or the like, or liquid components, such as liquid manure.

An agricultural tillage implement has a vertical tillage section and an aerating section behind the vertical tillage section, each extending substantially perpendicular to the pull direction of the implement. Individual vertical tillage elements, such as disc blades, can be indexed with individual rotary tine assemblies of the aerator section so that discrete holes formed by the aerator section are positioned between substantially continuous slits formed by the vertical tillage section. Rolling baskets can be provided behind the aerator section for further soil conditioning.

A soil aeration apparatus can include an aeration rotor comprising at least one set of aeration tines configured for movement in a planetary motion about an axis. The apparatus can further include the aeration rotor being configured to remove soil plugs from a ground surface and break the soil plugs into soil particles when the aeration rotor is rotated.

An apparatus for performing a ground treatment, such as aeration or dethatching, is provided. The apparatus includes a base frame component to which a pair of angled side frame components are pivotally mounted. Each angled side frame can include first and second ends that are oriented to form a central angle. A first end of an angled side frame can be pivotally attached to a wheel and/or the base frame component, while the second end can include a mechanism for mounting a ground treatment component.

An apparatus for performing a ground treatment, such as aeration or dethatching, is provided. The apparatus includes a base frame component to which a pair of angled side frame components are pivotally mounted. Each angled side frame can include first and second ends that are oriented to form a central angle. A first end of an angled side frame can be pivotally attached to a wheel and/or the base frame component, while the second end can include a mechanism for mounting a ground treatment component.

A cylindrical turf treatment rotor adapted to be driven in rotation about a horizontal axis, and provided with wear-resistant teeth extending along one or more helical tracks on the rotor, the teeth being individually attached to the rotor so as to be capable of individual removal for replacement or refurbishing or for reconfiguring the rotor.

A turf aerator is disclosed which is configured with components that allow a user to set a desired turf aeration depth and then automatically adjust hydraulic pressure to produce a proper level of downward pressure into the ground in order to maintain consistent depth penetration with the tines. The turf aerator implements a depth control lever that is operatively connected to a switch that increases or decreases tine depth up or down. Since the desired tine depth is set and the hydraulic pressure is capable of puncturing the ground accordingly, portions of the ground that are relatively harder or softer are still properly penetrated due to the set level of depth. The turf aerator is also configured with a tine housing which shields drive chains from dirt and debris from the aerating, thereby increasing the life of the drive chains.

An aerator tine holder includes a clamp block removably attached to a base. Each of the clamp block and the base have a plurality of semicylindrical channels that when attached together form a plurality of cylindrical bores holding cylindrical tines. One or more magnets in the base and/or clamp block may be used to position the tines while the clamp block is removed from the base.