Abstract: A soil perforator comprises a lightweight spiked rotor carried in a wheeled rectangular box-like frame with a handle secured to the rotor for manually pushing the assembled frame and rotor along the ground to provide soil aeration by perforation of the ground by the rotor spikes. The rotor may be vertically adjusted in the frame to vary the degree of spike penetration and to move the spikes out of ground engagement. The perforator further includes a detachable weight box to be mounted at one end of the frame opposite the handle, the weight box providing effective soil penetration by the spikes when the device is hitched by the handle to a vehicle and towed over the ground in the direction opposite to which it is manually pushed. Adjustable spring rake assemblies are provided at the opposite ends of the frame.

Abstract: This driller for use in a rice field comprises attaching a vertically moving supporting frame to a guide frame which is connected with a tractor and is raised and lower by a first vertically movable mechanism; connecting a first transfer mechanism mounted on the guide frame with a second transfer mechanism mounted on the supporting frame by means of an expansion and contraction rod; providing a crank driven by the second transfer mechanism as well as a vertically movable vertical rod, on the supporting frame; connecting the crank with the vertical rod by means of a connecting rod; mounting a movable frame, which is biased forwards continuously by a biasing spring and has vertical drilling rods, on horizontal guide rails disposed at the lower end of the vertical rod; and connecting both ends of a swing lever whose middle part is pivotally supported on the front part of the guide frame to the tractor and the supporting frame respectively.

Abstract: A lightweight hand propelled power rake having a motor driven rotatable rake wheel providing a plurality of radially extending prongs arranged in a plurality of sets, with the prongs of each set projecting through a sole plate. The device includes a method of adjusting the sole plate along the length of each set of prongs so as to determine the depth of penetration of such prongs.

Abstract: A sod cutting apparatus which includes a generally flat slide member having an upturned frontal portion and multiple slots extending in parallel, spaced relationship from front to rear, hinge arms pivoted to upward standing fulcrums secured to the slide member, the hinge arms and fulcrums in alignment with the slots, respectively, and round blades rotatably secured to the free ends of the hinge arms and projecting through the slots, respectively, with an adjusting mechanism secured to each hinge arm and provided with springs extending to the slide member for adjusting the tension on the blades. In a preferred embodiment, a plow attachment is mounted to the slide member rearwardly of the blades to aid in cutting and breaking up of the sod.

Abstract: This driller for use in a rice field comprises attaching vertical rods, with freedom of up and down, to a main frame connected to a tractor; attaching, to the main frame, an up and down mechanism which is driven by a driving source mounted on the tractor to ascend and descend vertical rods; providing guide rails, which were provided horizontally at the lower ends of vertical rods, with supporting frames movable horizontally along the guide rails; interposing a tension spring between the supporting frames and guide rails, the spring which acts to bias the supporting frame forward; and providing the supporting frame with perpendicular drilling rods.

Abstract: An automotive aerator includes a tractor or the like and an aerator carried movable vertically by the tractor or the like. A landing sensor for the detection of the spike pipe of the aerator, a device for driving the spike pipe into soil, and a depth sensor for detecting that the spike pipe has been driven to a predetermined depth in soil are provided so that actuation of the spike pipe driving device is preferably started when the spike pipe engages the surface of the ground and is stopped when the spike pipe reaches the predetermined depth.

Abstract: A self-propelled aerator including a chassis having a handle, an aerator rotor, and an engine having an idle speed. A throttle operatively connected with the engine is movable between a normally idle position for operating the engine at the idle speed and an advanced position for operating the engine at above the idle speed. An aerator drive is movable between a normally disengaged position rendering the aerating rotor inoperative and an engaged position drivingly connecting the aerating rotor with the engine. A control mechanism moves the aerator drive from the disengaged position to the engaged position before moving the throttle from the idle position to the advanced position and moves the throttle from the advanced position to the idle position before moving the aerator drive from the engaged position to the disengaged position. The aerating rotor is mounted on the rear end portion of chassis for rotation relative thereto, and the handle is attached to the rear end portion.

Abstract: An apparatus of the type designed to drill a plurality of equidistantly spaced bores of differing diameters in a lawn. The bores of smaller diameters are intended to aerate the lawn to provide holes into which seeds, water, and fertilizer can be deposited. Bores of larger diameters are intended to receive plugs of grass. The apparatus has the general appearance of a conventional lawnmower, having a planar in configuration base member and an insulated handle pivotally attached thereto. A linkage is provided to raise and lower the base member responsive to repositioning of the handle member. The drill bits are provided with welded ridges or heat treated flanges and are connected in driven relation to a motor mounted upwardly of the base member by a pulley and belt arrangement that differs depending upon the number of drill bits provided for a specific embodiment of the invention.

Abstract: An implement and procedure for reconditioning and aerating turf is disclosed. The implement comprises a frame, a narrow plow member having a concave leading edge with a forward tip depending from the frame, and a pair of narrow blades declining at an angle from the frame and loosely engaging opposite sides of the plow member adjacent its tip. The blades are mounted in a particular manner and are provided with specially-shaped edges designed to provide the desired groove cutting action as the implement is pulled forwardly through the turf. The implement functions to cut and lift slivers of soil and sod and to deposit the same along a groove cut in the turf. Preferably, a series of parallel grooves are formed in the turf in a single pass, the widths and depths being determined by the nature and severity of the reconditioning or aerating problem being treated.

Abstract: A powered mobile unit for turf-care apparatus comprises a chassis, driven and steerable front wheels, rear wheels supporting the chassis, a seat carried at least mainly by the rear wheels, a linkage behind the rear wheels for the attachment of turf-treating implements; and a powered hydraulic unit capable of activating the linkage to lift an attached implement clear of the ground and of applying such downward pressure to the implement as to cause the rear wheels to be raised clear of the ground with an operator in the seat, while the unit is mobile.

Abstract: A frame is provided journalling a rotary shaft having a lever system for rectilinearly driving at least one set of pins into and out of the ground. The lever system has a pair of substantially parallel spaced rods connected pivotally at one end to the set of pins and at the other end pivotally to the frame and offset from each other. The lower rod is extendible in length when the pins are placed under load and automatically resumes its normal length when the load is removed.

Abstract: An agricultural implement particularly suitable for aerating soils and pastures comprises a frame attachable to the three-point linkage of a tractor, a plurality of shafts rotatably mounted on the frame and a plurality of cutting blades projecting from each of the rollers. The blades are formed from plate material and are preferably formed to a point. Various edges are preferably bevelled to assist the implement in cutting the soil without undue lifting or tearing of the soil surface.

Abstract: An earthworking implement comprising a frame on which are supported front wheels, rear wheels and a rearmost dolly wheel. An aerator member with blades is rotatably secured to the frame between the front and rear wheels. The dolly wheel is mounted on the frame for rotation about a vertical axis at a location rearwards of the rear wheels. The front wheels and the dolly wheel represent endmost wheels on the frame. One of the endmost wheels is vertically movable with respect to the frame between raised and lowered positions, such that in the raised position the front wheels and dolly wheel define a common tangential plane which is at a level above the blades of the aerator member and below the rear wheels thereby establishing an operative aerating position whereas in the lowered position the front wheels and dolly wheel define a common tangential plane which is at a level below the aerator member and the rear wheels thereby establishing a transport position.

Abstract: A lawn cultivating machine comprising two parallel cutter shafts which are onnected together by a transmission gear and are rotatable about their axes, and on each of which shafts a plurality of cutters are arranged at spaced intervals from each other, the cutters of one shaft being displaced relative to the cutters of the other shaft, in which the speeds of the cutter shafts are in a certain transmission ratio and the directions of rotation of both cutter shafts are identical.

Abstract: A drum attachment for conventional tillers that expands the possible uses for such tillers. A pair of drums may be detachably mounted to a tiller shaft in place of conventional tiller blades, each drum being attached to the shaft by one or more pins held by spring keeper keys passing through an interior sleeve of the drum and the shaft. Spider assemblies space the exterior surface of the drum from the sleeve while still allowing access to the pins from the exterior of the drum. On the surface of the drum a number of radially outwardly extending teeth are provided, the teeth being arranged in spiral courses and in circumferential rows. The teeth preferably are cylinders about one and one-half inch long and half-inch in diameter. The invention is useful for tilling, cultipacking, dethatching, seedbed preparation, and aeration.

Abstract: An apparatus for aerating lawns or the like which features a novel construction wherein the tines include a rotating drilling action with a forward and downward motion to effectively aerate the turf as well as impart a forward walking type action to the apparatus as a whole. Further, the individual tines include a pressure limiting construction to prevent damage to the tines in addition to eliminating damage to sidewalks or other hard surfaces which may inadvertently be contacted during use.

Abstract: A cultivating implement having freely rotatable tine members mounted on axles set at an angle other than normal to the direction of travel of the implement over the ground, the tine members comprising a plurality of forwardly arcuately curved tines having chisel shaped tips which produce sideways cutting action through the soil as the implement is moved over the ground.

Abstract: A turf perforating machine for aerating lawns by removing plugs therefrom comprising a wheeled frame having a plurality of reciprocating tools, each connected by a linkage to an eccentric mounted on a journal and each linkage slidably mounted in a pivotable guide secured to the journal which prevents binding of the linkage as the frame is moved across the lawn and the tool is disposed in the ground, and including further a retractor unit for pivoting the guide, linkage and tools to a nonperforating position.

Abstract: A device for picking up debris from lawns and like grounds, and comprised of a rolling drum motivated and controlled through a handle, and having retractile spikes for collectively piercing leaves and small bits of paper and like refuse, said spikes being yieldingly depressible to ground obstructions, such as protrusions, and retractile by control means to discharge the collection thereby of said debris. The depressibly retractile spikes are arranged in gangs guided radially by the cooperative drum structure, and the control means is uneffected by rotation of the drum or by said yielding depressibility of the gangs of spikes and is manually operable to retract the same as circumstances require.