A grapple-heel rack having a frame, a grapple, and first and second angle-enabler catches. A grapple attachment (which may be or may include a universal joint) may be used to support the grapple from a nose of the frame. A mechanical grapple return system may be used to return the grapple from anon-neutral position to a neutral position. At least one method for using the grapple-heel rack.

A clamp assembly comprising a pair of clamps may couple to an assembly body. The clamps may pivot to receive material beneath the assembly body. The clamps may include opposing surfaces that define a scoop space beneath the assembly body. Each of the clamps may include a cutting plate. The cutting plate may include a perforating edge configured to extend into the scoop space relative to a corresponding one of the opposing surfaces. The clamp may further include a retention plate. The retention plate may include an inner surface that faces the cutting plate. The cutting plate and the retention plate further define the scoop space between the clamps. The clamp assembly may couple to a lift assembly. The lift assembly may include a hydraulic actuator configured to raise and lower the clamp assembly.

A clamp assembly comprising a pair of clamps may couple to an assembly body. The clamps may pivot to receive material beneath the assembly body. The clamps may include opposing surfaces that define a scoop space beneath the assembly body. Each of the clamps may include a cutting plate. The cutting plate may include a perforating edge configured to extend into the scoop space relative to a corresponding one of the opposing surfaces. The clamp may further include a retention plate. The retention plate may include an inner surface that faces the cutting plate. The cutting plate and the retention plate further define the scoop space between the clamps. The clamp assembly may couple to a lift assembly. The lift assembly may include a hydraulic actuator configured to raise and lower the clamp assembly.

A hydraulic control circuit operable to selectively hydraulically link first and second hydraulic actuators and to bypass that hydraulic link.

A clam bucket assembly comprise an assembly framework which comprises an upper section and a lower section. First and second clam buckets are supported by the lower section of the assembly framework, a first bucket cylinder controls operation of the first clam bucket to engage and discharge a desired bulk material, and a second bucket cylinder controls operation of the second clam bucket to engage and discharge a desired bulk material. The clam bucket assembly supports its own independent power module for supplying hydraulic power to at least the first and the second bucket cylinders and controlling operation of the first and the second clam buckets. The power module is supported by the upper section of the assembly framework, and the clam bucket assembly is completely powered solely by the power module and controlled by radio remote control receiver and transmitter.

Adaptable clevis kits may be used when calibrating crane scales, dynamometers and tension links for force calibration laboratories. An adaptable clevis kit may include one set of devises (one pair) with multiple sets of pins with different diameters. With this kit, the same set of devises may be used for calibrating several models of instruments. For each instrument, the pin may be designed with the same diameter that the manufacturer originally made the equipment and reported on its specification sheets. With this method, the error due to difference in pin sizes is eliminated, and the laboratory may save the cost of purchasing dozens of different devises. The adaptable clevis kits may also be provided with a guiding table that help the user find the right size pin for the instrument being calibrated based on the manufacturer's original design.

Adaptable clevis kits may be used when calibrating crane scales, dynamometers and tension links for force calibration laboratories. An adaptable clevis kit may include one set of devises (one pair) with multiple sets of pins with different diameters. With this kit, the same set of devises may be used for calibrating several models of instruments. For each instrument, the pin may be designed with the same diameter that the manufacturer originally made the equipment and reported on its specification sheets. With this method, the error due to difference in pin sizes is eliminated, and the laboratory may save the cost of purchasing dozens of different devises. The adaptable clevis kits may also be provided with a guiding table that help the user find the right size pin for the instrument being calibrated based on the manufacturer's original design.

A grappler assembly having an assembly framework and a grappler device that is supported by the assembly framework. The grappler device has at least one pair of grappler arms that engages with a desired section of a tree to be removed. The grappler assembly incorporating its own independent power module for supplying hydraulic power to the grappler device and controlling operation of the at least one pair of grappler arms, and the power module is mounted solely to the assembly framework.

A grappler assembly having an assembly framework and a grappler device that is supported by the assembly framework. The grappler device has at least one pair of grappler arms that engages with a desired section of a tree to be removed. The grappler assembly incorporating its own independent power module for supplying hydraulic power to the grappler device and controlling operation of the at least one pair of grappler arms, and the power module is mounted solely to the assembly framework.

A slurry wall grab has a hybrid drive in turn having at least one pulley block, at least one hydraulic actuator, and at least one energy store. The hydraulic actuator and the pulley block open and/or close a grab jaw of the slurry wall grab. The energy store can be charged by actuating the pulley block.