There is disclosed a system and methods of use for quickly and efficiently excavating, cross-cutting, splitting, and loading or stockpiling tree stumpage and other tree or organic materials, as well as for performing ground cleanup operations. One embodiment provides a stump harvester for attachment to a distal end of an excavator arm. The stump harvester may include front and back jaw assemblies configured to pivot between open and closed positions. The back jaw assembly may include a knife arm having a cutting blade that extends along a majority of a front side of the knife arm. A centerline plane may bisect a cutting edge of the blade. The front jaw assembly may include a planar-aligned dual anvil configured to sheath the cutting edge of the blade when the front and the back jaw assemblies move into the closed position. Other embodiments are disclosed.

A lifting mechanism assembly comprising a lifting section, a compression section, and an attaching section.

A fender mounted hoist has a frame having lifting points for receiving one or more ratchets. The frame is mounted over a fender well. The fender well includes a right fender well and a left fender well. The right fender well includes a right fender well inside frame, a right fender well base, and a right fender well wall. The left fender well includes a left fender well inside frame, a left fender well base, and a left fender well wall. A main beam has a left end of the main beam and a right end of the main beam. The main beam of the frame is horizontally oriented. A left leg is connected to the frame at the left end of the main beam, and a right leg is connected to the frame at the right end of the main beam.

A fender mounted hoist has a frame having lifting points for receiving one or more ratchets. The frame is mounted over a fender well. The fender well includes a right fender well and a left fender well. The right fender well includes a right fender well inside frame, a right fender well base, and a right fender well wall. The left fender well includes a left fender well inside frame, a left fender well base, and a left fender well wall. A main beam has a left end of the main beam and a right end of the main beam. The main beam of the frame is horizontally oriented. A left leg is connected to the frame at the left end of the main beam, and a right leg is connected to the frame at the right end of the main beam.

A device and method for lifting a hollow bodied block includes an elongated body having a top end and a bottom end with a handle attached to the top end. A first arm rigidly extends from the elongated body in a substantially perpendicular direction and is configured to engage an inner surface of the block. A second arm is pivotally attached to the bottom end of the elongated body in a substantially opposite direction to that of the first arm. Upon exerting a lifting force on the handle of the lifter, the second arm rotates relative to the elongated body, forming a desired angle with the first arm and creating an outward force sufficient to grip and lift the block.

A device is proposed for attaching a coupling device to a free-floating object, for example free-floating articles or free-floating persons. The device has: at least one first connection end, which can be connected to a load-receiving end of a lifting device; a coupling device for attachment to a free-floating object; a load-receiving connection between the first connection end and the coupling device; and a guiding device, which is separate from the load-receiving connection, connects the first connection end to the coupling device and is designed to guide the coupling device relative to the first connection end.

A modular lifting system, including an enclosable lifting device support structure. The enclosable lifting device support structure includes a deployable top, a plurality of lateral sides, a base coupled to the plurality of lateral sides, and a plurality of extension arms. The deployable top is configured to support a lifting device on a first side of the deployable top. The plurality of extension arms are configured to extend and support the deployable top when the deployable top is deployed.

A modular lifting system, including an enclosable lifting device support structure. The enclosable lifting device support structure includes a deployable top, a plurality of lateral sides, a base coupled to the plurality of lateral sides, and a plurality of extension arms. The deployable top is configured to support a lifting device on a first side of the deployable top. The plurality of extension arms are configured to extend and support the deployable top when the deployable top is deployed.

A utility system may include at least one moveable arm, and at least one grappling assembly connected to the at least one moveable arm. The grappling assembly may include an upper claw including one or more lower grasping surfaces, and a lower claw including one or more upper grasping surfaces. The lower claw may be pivotally secured to the upper claw. The upper claw may be configured to close with respect to the lower claw. The lower claw may be configured to be wedged into at least a portion of the moveable arm so that the upper claw may compressively grasp a structure between the one or more lower grasping surfaces and the one or more upper grasping surfaces.

A lifting apparatus (10) for a pulley (12), the apparatus (10) including: a first beam section (14) adapted to couple to the pulley (12) in a fitted condition; and a second beam section (16) connected to the first beam section (14) in a spaced apart relationship extending parallel to the first beam section (14). The second beam section (16) includes a lifting arrangement (20) including a pair of lift couplings (22) and a plurality of notches (24), the pair of lift couplings (22) being moveable between a first condition in which each one of the pair of lift couplings (22) are able to be moved between the plurality of notches (24), and a second condition in which each one of the pair of lift couplings (22) is substantially retained in a respective one of the plurality of notches (24). A related method of use is also disclosed.