Abstract: A system and apparatus to fasten a cab and riser to a heavy machine is described herein. A riser may include a frame that has therein a plurality of pivot pins. The pivot pins may have clamping elements coupled thereto. The respective distal ends of the clamping elements may be coupled to activation screws. When force is applied to a respective activation screw, a respective clamping element may rotate around a respective pivot pin to become clampingly engaged with a receiving structure on the heavy machine.

Abstract: A system and apparatus to fasten a cab and riser to a heavy machine is described herein. A riser may include a frame that has therein a plurality of pivot pins. The pivot pins may have clamping elements coupled thereto. The respective distal ends of the clamping elements may be coupled to activation screws. When force is applied to a respective activation screw, a respective clamping element may rotate around a respective pivot pin to become clampingly engaged with a receiving structure on the heavy machine.

Abstract: Embodiments described herein provide methods, apparatuses, and systems for moving, loading, and/or sorting logs. A log grapple may include opposing arm assemblies and independently positionable drive wheels disposed between the arms. The log grapple may be operable in a grapple mode, in which the arms are in a closed position and the drive wheels are in an open position, and a feed mode, in which the arms and the drive wheels are in closed positions. In feed mode, the first and second drive wheels may be rotated to drive the log through the arms. The log grapple may be further configured to delimb, measure, and/or cut logs in the feed mode. A log grapple may also include a measuring wheel assembly. Optionally, the measuring wheel assembly may include a hydraulic actuator configured to retract the measuring wheel and a gas spring configured to extend the measuring wheel.

Abstract: Embodiments described herein provide methods, apparatuses, and systems for moving, loading, and/or sorting logs. A log grapple may include opposing arm assemblies and independently positionable drive wheels disposed between the arms. The log grapple may be operable in a grapple mode, in which the arms are in a closed position and the drive wheels are in an open position, and a feed mode, in which the arms and the drive wheels are in closed positions. In feed mode, the first and second drive wheels may be rotated to drive the log through the arms. The log grapple may be further configured to delimb, measure, and/or cut logs in the feed mode. A log grapple may also include a measuring wheel assembly. Optionally, the measuring wheel assembly may include a hydraulic actuator configured to retract the measuring wheel and a gas spring configured to extend the measuring wheel.

Abstract: A log debarker for debarking a lengthwise-moving log includes a pair of debarking subassemblies each including a pair of cylindrically concave, rotating cutter elements positioned angularly asymmetrically toward one side of the log and away from an opposite side thereof and a third subassembly including a cutter element positioned to debark said opposite side of the log. Each of the pair of debarking subassemblies includes a stationary support frame, a tilting head platform and a pivoting cutter assembly supporting the cutter elements linked to the support frame so as to pivot the cutter element about an axis normal to the log axis as the cutter assembly is tilted. The cutter elements are moved toward or away from one another to adapt to different log diameters and are pivoted about an axis normal to their axes of rotation.

Abstract: A log debarker for debarking a lengthwise-moving log includes a pair of debarking subassemblies each including a pair of cylindrically concave, rotating cutter elements juxtaposed on opposite sides of the log and formed to debark a quadrant of a log. Each debarking subassembly includes a stationary support frame, a tilting head platform and a pivoting cutter assembly supporting the cutter elements linked to the support frame so as to pivot the cutter element about an axis normal to the log axis as the cutter assembly is tilted. The cutter elements are moved toward or away fron one another to adapt to different log diameters and are pivoted about an axis normal to their axes of rotation. Pivoting the cutter element skews the rotational axis of the concave cutting surface to an oval of a reduced effective radius of concavity in a plane normal to the log axis to debark a smaller diameter log.