Abstract: A tool bit comprises a shank portion defining a longitudinal axis; and a working portion. The working portion includes at least a first arcuate surface disposed longitudinally adjacent the shank portion.

Abstract: A system for use in securing bits against rotation in a motor grader may include a bit, with the bit having a shank. The shank may include a locking portion. The system may include an adapter board including a hole configured to receive the shank of the bit. The system may also include an anti-rotation plate configured to engage the locking portion of the shank of the bit such that the anti-rotation plate constrains the bit against rotation with respect to the adapter board.

Abstract: The selective positioning of row units along a planter tool bar is facilitated by introducing an elongated channel of generally C-shaped cross-sectional configuration intermediate the tool bar and a plurality of row unit head brackets. The channel is welded or otherwise fixed to the tool bar with the open edge of the “C” facing away from the tool bar and the head brackets are fixed to the channel by clamping nut and bolt assemblies. The bolts extend through the clamping brackets and engage corresponding clamping nuts. The clamping nuts are positioned within the “C” and may be slid along the inner edge of the channel to any preferred position. The bolts are then and tightened fixing the head bracket at the selected at location.

Abstract: A mounting system for securing planting units in planting machines, each unit including at least a portion removably secured to a carrier beam, the system allowing to quickly and simply change the distance between working units in order to adapt the machine to a better use thereof the beam having at least one slot extending along the beam and receiving a bolt connected to a curved plate bearing against a rear face of the beam, and to the beam, the bolt passing through the slot of the beam.

Abstract: Integral hitch and standard mounting structure for a toolbar includes a first embodiment having a hitch tube connected to a three point hitch and to a rear toolbar. Brackets located a substantial distance outwardly of the hitch connect the hitch tube to the toolbar in parallel, rearwardly offset relationship to provide sufficient space between the tube and toolbar for lateral adjustment of tool brackets. Upright plate structure fixed relative to the front face of the toolbar has slotted extensions which project above and below the toolbar. Tool standard mounting bracket structure includes an upper L-shaped member having a horizontal leg positioned against the top of the toolbar and an upstanding bolt-receiving leg positioned against the upper slotted extension. A lower L-shaped member having a downturned bolt-receiving leg is fixed to the top of the tool standard and is positioned against the bottom of the toolbar and against the lower slotted extension.

Abstract: There is disclosed a farm implement having a frame connectible to a tractor by means of a three-point hitch to permit it to be moved forwardly over the ground level, a first set of chisels supported on the frame in laterally spaced-apart relation, a second set of chisels supported on the frame rearwardly of the first set and laterally intermediate laterally adjacent chisels of the first set, and a lister mounted on each chisel of the second set with its lower edge above the lower edge of the chisel of the second set. In use of the implement, the first set of chisels form longitudinally extending trenches in the ground, and the listers mounted on the chisels of the second set turn the soil toward the trenches in order to build beds thereover.

Abstract: An implement has rows of tines on carrier supports that are elongated and extend transverse to the direction of travel. A transmission shaft with pairs of eccentrics is positioned between the supports and connected to move the tines of the supports to and fro in relatively opposite directions. The eccentrics are in pairs and interconnected to the frame by adjustable links that control the operative movements of the tines, those movements being in the direction of travel. A pulverizing member is pivoted to the rear carrier support to move with same and a front soil levelling member with strip-shaped members is positioned in front of the tines. Preferably, a supporting roller is connected to the frame at the rear of the pulverizing member.

Abstract: Seed drill has a row of coulters which are raised and lowered by a beam extending along and above the row of coulters and connected to the coulters by spring assemblies. The beam is raised and lowered relative to the frame of the drill by two rams to actuate the coulters. The mounting of the beam comprises an articulated joint, such as a ball joint, which permits the ends of the beam to rise and fall independently of each other relative to the frame thereby permitting improved contour following by the coulters and avoiding excessive loads on the beam in the event of failure of one of the rams.

Abstract: A field drag particularly adapted for use in conjunction with a post-plowing cultivating implement includes a mounting bar section pivotally secured to the frame of the implement and extending in a rearward direction behind the implement. A plurality of spaced, soil-working teeth are secured to the bar section and extend downwardly therefrom and generally toward one end of the bar section so as to form an acute included angle with respect to the bar section. An adjustable spring tension arrangement pulls the bar section resiliently toward the implement thereby urging the teeth into the soil as the drag is pulled across a seedbed to break up and pulverize clods and smaller chunks of earth into loose soil. In a modified form, the teeth may be fastened to the bar section to slant selectively toward one end or the other of the bar section.

Abstract: A rotary hoe implement, having hoe support arms independent of adjacent hoe support arms, and a selectively adjustable means for varying the downward pressure exerted by the leaf spring biasing means acting on each support arm.