Abstract: A tine mounting and tine both comprise a rotatable soil working member for a harrow designed to resist damage from stones and other debris on or in the soil. The mounting has an upper shaft that defines an axis of rotation and a holder with a bore that extends at an angle to intersect that axis. The fastening portion of a tine extends through the bore and has a threaded end that receives a retaining nut protected by a screening recess in the mounting. The tine has a lower soil working portion that joins the fastening portion adjacent the bottom of the holder and the junction is thickened with a polygonal cross section having recesses in its sides. The soil working portion has an upper part that extends in the same direction as the longitudinal axis of the fastening portion and the upper part is connected to a lower part by an integral bend. The lower part extends substantially parallel to the axis of rotation of the soil working member.

Abstract: An adjustable attachment for a backhoe comprises a single tooth pivotally connected to a frame, the tooth being capable of taking a plurality of angularly spaced apart positions on the frame. Tensioning means hold the tooth in a desired position, but also allow the position of the tooth to be changed by the backhoe operator by using the backhoe controls without having to leave the controls.

Abstract: A replaceable tool for attachment to the periphery of an agricultural disc is formed of an inverted U-shaped investment casting which can be fitted over the marginal edge portion of the disc to present parallel leading and trailing faces connecting side surfaces which converge outwardly of the disc, being inclined at different angles relative to the plane of the disc so as to present on one side of said disc a side surface providing clearance for the disc on that side of the disc and the other side surface being at a greater angle which reduces the areas of the end faces of the tool to reduce resistance to passage of the tool through the ground.

Abstract: An apparatus for pulverizing debris in land clearing operations, or the like, including: a frame; a ground engaging drum rotatably mounted on the frame and carrying generally radial teeth, and specifically conventional sheeps feet; and a forwardly facing debris pickup and breaker assembly carried by the frame for feeding debris to the rotor teeth in response to forward movement of the frame, and cooperating with the rotor teeth to break up the debris.

Abstract: A multi-material earthworking ripper tip having a leading nose portion comprised of a material having greater wear resistance and strength at elevated temperatures than the material which comprises the rearward shank supporting portion of the tip. In one embodiment, a bi-metallic nose portion is inertial welded to the shank support portion of the tip. In another embodiment powdered tungsten carbide is sintered in situ within a hollow bore of a steel nose portion. Alternately, a solid core of tungsten carbide could be soldered, brazed or press fitted within said hollow bore.

Abstract: Retaining means for releasably retaining an earthworking tool on a support member includes a socket and adjustably partially misaligned holes extending transverse of the socket and a radially resilient retaining pin extending through the holes.

Abstract: The invention is concerned with a unitary high strength earth working tooth useful with excavator buckets, scrapers, rippers and the like. The tooth is integrally formed and includes a proximal end for attachment to an earth working machine and a distal end for penetrating soil. The proximal end includes a generally isosceles trapezoidal upper portion, a generally isosceles trapezoidal lower portion, and a pair of generally isosceles trapezoidal sides, each side extending from an edge of said upper portion to an edge to said lower portion, a closure interconnecting the shorter bases of said upper portion, said lower portion and said two sides, and a pair of aligned holes, one through each of said sides generally on the bisecting axis thereof.

Abstract: A steel soil cultivating tine has a lower soil working portion and an upper fastening portion. The tine has zones of differing hardness along its length, the hardest zone including the lowermost end of the tine. The tine can take different shapes and configurations, but in general the soil working portion has sides, at least several of which taper towards the lowermost end. The fastening portion can be threaded for reception in a threaded holder. Near the juncture between the fastening and soil working portions a zone of reduced hardness lends flexibility to the tine.