Abstract: A demining device has a controlled detonator or hammer assembly mounted on a ram drive; which, when it is used as a demining device, permits efficient elimination of a minefield with minimal danger to the operator of the tractor, and which can be easily assembled from parts on hand or otherwise used with a device for exploding mines in a minefield.

Abstract: A multiple purpose agricultural power tool is provided which consists of a removable cover to fit over an open top of a housing, a wheel assembly which is rotatable and mounted to the housing, so that it can travel along the ground and a pair of legs affixed to a rearward bottom edge of the housing for stabilizing the housing when not traveling along the ground. A power source is carried within the housing for producing rotary motion and a mechanism is carried within the housing for converting the rotary motion to a reciprocating motion. A shank coupled to the converting mechanism extends downwardly at an angle from a front wall of the housing. A detachable implement is coupled to the shank for performing a garden task on the ground. The power tool is also provision to supply power to alternative connectable auxiliary power implement.

Abstract: The invention concerns a device (1), which is self-powered or can be connected-up to a vehicle, for loosening the sub-soil, the device having an array of piercing tools (13) mounted substantially perpendicular to the direction of travel of the device. Before driving into the soil, the tools are oriented by means of a jointed-rod parallelogram, independently of the penetration depth selected (the penetration depth is adjustable). The position of the link rod (21) running approximately parallel to the chassis-mounted linkage between the two chassis-mounted bearings (7,8) can be altered by pivoting the piercing tool (13) or its mounting (14), against the bias of a spring (22), in a direction away from a stop (23) while the tool is executing the loosening movement in the soil.

Abstract: The process serves for the loosening of soil in the subsoil and topsoil areas and for introduction of fertilizers as well as subsoil loosening and/or for soil cultivation as well as the introduction of other additives with the use of digging tools 2, 2', and 2" by which the soil is broken up. In this case, the digging edge of digging tool 2, 2', and 2" is guided in an elliptical motion and this motion is superimposed by a straight motion, i.e., the driving motion. A cycloid is therefore produced for the digging edge. The longer axis of the ellipse in this case is directed from the soil surface into the soil in this manner and exhibits an angle to the travel direction. The additive, such as, for example, fertilizers, can be blown into the fissure forming behind tool 2.

Abstract: Rocker arms are mounted for pivoting at their centers about a vertical axis on a chassis with the pivot axis in line with a longitudinal slot through which a crank arm projects. The upper end of the crank arm is pivoted to a crank which upon rotation reciprocates the crank shaft vertically. One or more tines project downwardly from the bottom of the crank arm below the longitudinal slot in the chassis through which the lower end of the crank arm projects and within which the crank arm is permitted to oscillate fore and aft during movement of the aerating machine over the turf. A pair of connecting rods are pivotably mounted at one end to vertical studs fixedly mounted to the rocker arm to opposite sides of the vertical pivot axis of the rocker arm on the chassis. The opposite ends of the pair of connecting rods are pivotably coupled to laterally adjacent crank arms and the connecting rods are of equal length to cause the crank arms to oscillate 180.degree.

Abstract: A garden tilling apparatus has a frame with movable arms extending out of the frame and soil-working tines connected to the forward-most portion of the movable arms. Inside the frame, a crankshaft is mounted coupled to the arms and the arms pivotally attached to the frame. A drive mechanism mounted on top of the frame rotates the crankshaft which in turn reciprocates in an elliptical manner the soil-working tines which engage the soil. Handles extend upwardly from the rear of the frame so that one operator may move and use the apparatus to till the soil.

Abstract: A turf aerator includes a wheel-supported frame and drive means for propelling the frame across the ground at a predetermined rate. A pair of substantially vertical tine arms each having a plurality of downwardly directed turf coring tines attached to the lower end thereof are mounted on the frame for alternate penetrating engagement with the ground. A tine arm actuating mechanism produces an essentially elliptical movement of the upper end of each tine arm, the major axis of the elliptical movement being substantially vertical. A rocker mechanism indirectly connects the lower end of one tine arm with the lower end of the other tine arm such that the horizontal movement of one tine arm with respect to the frame upon engagement of that tine arm with the turf produces an equal and opposite horizontal movement of the other tine arm and vice versa. The aerator produces a substantially vertical insertion and withdrawal movement of the tines and a resultant minimal disturbance of the surrounding turf area.

Abstract: A light weight hand-held power actuated tool for aiding an operator do work such as raking, thatching, cultivating, hoeing and sweeping.A main member with handles for operator support has a motor attached. The motor activates a mechanism which holds a working tool such as a rake, thatching tool, cultivator, hoe or broom. The mechanism is such that the working tool is driven in a continuous oscillating motion similar to conventional hand raking, thatching, cultivating, hoeing or sweeping.

Abstract: A cordless earth tiller has a housing mounted upon wheels and including a handle for guiding and controlling the tiller and tilting the same in a fore-and-aft direction. A power driven crankshaft disposed forwardly of the wheels carries a plurality of arms which depend from crankpins of the crankshaft and are provided at their lower ends with tines. Links are pivotally connected at one end to the arms and at the other end to an axle of the wheels whereby rotation of the crankshaft causes a tilling or cultivating motion of the tines. The tines sequentially impinge upon the ground in a substantially vertical direction and proceed through the ground at a rearward inclination to draw the tiller through the ground in response to rotation of the crankshaft. Modifications comprise the use of harrowing disks as wheels and the substitution of ice chipping tools for the tines, etc.