Abstract: The present invention is a walk-behind power unit stabilizing system for use on portable trenchers and other equipment. The preferred application comprises a retractable wheel assembly mounted at the rear of a trencher where the invented device is allowed to be maneuvered by the user from a lower, stabilization position to an upper, transport position. The device has a handle that allows the user to move the device from the upper, transport position to the lower, stabilized position, and vice versa, easily by raising and lowering the handle, either by hand or by moving the handle up or down using the user's foot. Some of the main benefits of the invented device include: ease of use; a reduction in the physical labor required to operate a trencher; stability; the ability to more consistently control the depth at which the trench is dug; an increased ability to traverse perpendicular trenches; increased force exerted on the boom when inserting the boom into the ground; and trench straightening.

Abstract: A ground opening device intended for use with agricultural apparatus is disclosed. The device has a rotatable cutting element and a mounting means. The rotatable cutting element has a cutting edge which forms a narrow groove in the ground when the cutting element is rotated. The cutting element is arranged such that its cutting edge oscillates in two directions simultaneously: in a direction substantially transverse to the groove being formed in the ground and in a direction substantially vertical with respect to the ground surface.

Abstract: The device consists of two longitudinally extending side frame members connected at one end to a diking plate and at the other end to a transverse frame member which in turn is connected to a hitch which allows the frame and diking plate pivotal movement in both a vertical and a horizontal plane. Connected medially of each side frame member is a pillow block bearing which bearings support, on a single axis, a pair of spoked wheels. Each of the spoked wheels has one spoke of greater length than the remaining spokes which longer spokes extend outward in a common radial plane. As the spoked wheels turn, the diking plate is lifted periodically from the ground to provide a damming action in a furrow in the earth.

Abstract: A dammer having three legs with a foot on the end of each leg is towed behind agricultural cultivating implements. Each foot slides flat against the earth until the weight of the soil causes the dammer to rotate, at which time the dammer rotates one-third of a revolution dumping one dam and continuing to form another.

Abstract: A mobile spreader of the type drawn by a tractor includes a hopper mounted on a roller. The roller is provided with a jarring strip which imparts a jolt to the hopper on each revolution of the roller. This jolting action prevents bridging of the material in the hopper, knocking the hung-up material down into the lower portion of the hopper where an agitator and an impellor further stir up the material. The cooperative effect of the jarring strip, the agitator and the impellor is to provide a steady supply of material, even when moist material is being distributed. The rate of application of the material is controlled by a slidable apertured plate disposed across an opening in the bottom of the hopper. The spreader may be selectively provided with a rake, a floater plate, and a spiker. The spiker may be attached in front of the roller to open the turf to receive the material, or behind the roller to work the applied material into the turf. In addition, the spiker aerates the turf.

Abstract: An earthworking implement mounted on a three-point hitch of a draft vehicle with a hitch assembly. The hitch assembly has L-shaped members mounted in clamps secured to a main transverse beam. A plurality of parallel linkages movably connect a transverse tool bar to the beam. Row guide units having resilient rubber wheels and furrowing tools are mounted with clamps to the tool bar. Earthworking tools are mounted with clamps to the tool bar. In one form, the earthworking tool is a blade sequentially moved into and out of the soil with a lifting wheel to dig water-holding basins or trenches in the soil.