Abstract: An agricultural implement includes: a chassis; a hitch connected to the chassis; and a harrow carried by the chassis. The harrow includes: a tine frame having at least one clamp tab; and at least one tine clamped to the tine frame by the at least one clamp tab, the at least one tine including a clamped portion with a pair of opposite ends and a pair of vertically descending teeth, each of the vertically descending teeth being connected to a respective end of the clamped portion.

Abstract: A fully mounted implement for working the soil comprising a main frame formed by an angled beam, two transverse beams and a longitudinal beam, soil working elements arranged along the angled beams which is at an angle between 35.degree. and 70.degree. to the longitudinal beam; mounting structure for connecting the implement to a three arm lift of a tractive vehicle including a traction frame defining a transverse slot and having connecting structure for connection to two lower arms of the three arm lift; an upright pin passing through the slot and having connecting structure to any transverse position of one transverse beam of the main frame; and a longitudinal tower beam having connecting structure for connection to a third arm of the three arm lift and connecting structure to any transverse position of both the transverse beams of the main frame. Demountable extensions for the angled beam carrying soil working elements are described.

Abstract: A plurality of plow units are mounted to a main frame of a plow system for rotation about their vertical axes. The plow units are spaced at equal lateral increments and at uniformly increased distances from a pivot connection between the main frame and a traction vehicle. The plow units are ganged together by means of a guide beam; and a power actuator controls the motion of the guide beam in rotating the plow units so that their cut lines take a predetermined position relative to the main frame. As the plow system is then used to plow ground, the main frame swings about its pivot connection to the tractor until the plow units line up with the direction of travel of the tractor, thereby adjusting the spacing between plow units automatically. The rear plow unit is mounted to a tail section which is pivotally mounted to the main frame and includes a rear wheel for supporting the distal end of the main frame and for steering the system as the tractor turns.

Abstract: The plow system may carry as many as 10 or 14 individual plow units. All of the units are connected together by a tie rod and may be pivoted in unison relative to a main frame. By pivoting the units, they may be opened or closed to adjust the width of cut between adjacent units over a continuous, wide range. The main articulated frame includes a forward frame section with a main beam inclined relative to the direction of travel of the vehicle, and the rear frame section with a main beam in axial alignment with the main beam of the forward frame section. The forward frame section and rear frame sections are pivotally connected together for rotation about a horizontal axis to permit the system to follow the contour of the ground extending in the direction of travel. The system includes a forward furrow wheel, a rear furrow wheel, and a steerable intermediate support wheel which rides on unplowed ground ahead of the system and is steered as a function of the adjusted position of the plow units.

Abstract: This invention is a trailer plough having a double-length boom carrying twice as many shares as a conventional boom to enable a larger area to be ploughed at each pass of the tractor. The boom is in two parts connected together by a hinge having a universal joint at one end and a lost motion connection at the other end thereof, whereby the boom is hinged together for ease of manipulation at the ends of rows and also to enable the rear boom part to be lifted if, say when ploughing uphill, the tractor cannot pull the load due to the full number of shares.