A timber-working device having a first pivoting drive arm and a second pivoting drive arm, and a timing link for connecting them. The timing link includes an elongate member having a first end and a second end. A first aperture is at the first end and a second aperture at the second end. At least one of the first aperture and the second aperture is elongate along the length of the member.

Pruning shear heads are provided. A pruning shear head includes a base portion; a blade movable relative to the base portion between an open position and a closed position; and a branch hook comprising a contoured interior face, the branch hook being movable relative to the base portion between an open position and a stowed position.

Pruning shear heads are provided. A pruning shear head includes a base portion; a blade movable relative to the base portion between an open position and a closed position; and a branch hook comprising a contoured interior face, the branch hook being movable relative to the base portion between an open position and a stowed position.

A method obtains an orientation of at least one section of a felled tree. The method includes the steps of: treating the at least one section of the felled tree; identifying an alignment and/or a position during the treatment; obtaining orientation information related to the orientation of the at least one section of the felled tree based on the identified alignment and/or the identified position; and outputting the obtained orientation information.

A method obtains an orientation of at least one section of a felled tree. The method includes the steps of: treating the at least one section of the felled tree; identifying an alignment and/or a position during the treatment; obtaining orientation information related to the orientation of the at least one section of the felled tree based on the identified alignment and/or the identified position; and outputting the obtained orientation information.

A device for allowing work to be carried out on or about an object includes at least one gripping arrangement. The at least one gripping arrangement is configured to grip and traverse the object so as to reach a desired location on the object and to anchor the device thereto for allowing the work to be carried out.

A positioning system for attachment to a vehicle for operation of a power tool by a ground-based operator sitting in the vehicle provides a telescoping mast attached to the vehicle, a pivot bracket connecting an upper arm to the upper portion of the telescoping mast, mounting means for mounting the power tool on the upper arm; and power means for operating the power tool from the operator's position in the vehicle.

A positioning system for attachment to a vehicle for operation of a power tool by a ground-based operator sitting in the vehicle provides a telescoping mast attached to the vehicle, a pivot bracket connecting an upper arm to the upper portion of the telescoping mast, mounting means for mounting the power tool on the upper arm; and power means for operating the power tool from the operator's position in the vehicle.

An apparatus for cutting involves a support configured to stably support the apparatus on a surface, an articulated boom rotatably mounted on the support proximate a first end of the boom, and a hydraulically operated end effector mounted on the boom proximate a second end of the boom. The end effector has a cutter configured to cut an object, and preferably also has an immobilizer (e.g. a gripper) configured to immobilize the object while being cut by the cutter. The end effector has a swivel between the cutter (and/or immobilizer) and the boom, the swivel rotatable continuously through 360 to rotate the cutter (and/or immobilizer) continuously through 360. The swivel has an internal fluid conduit through which hydraulic fluid may be transported from a hydraulic fluid reservoir to the cutter to hydraulically operate the cutter.

An apparatus for cutting involves a support configured to stably support the apparatus on a surface, an articulated boom rotatably mounted on the support proximate a first end of the boom, and a hydraulically operated end effector mounted on the boom proximate a second end of the boom. The end effector has a cutter configured to cut an object, and preferably also has an immobilizer (e.g. a gripper) configured to immobilize the object while being cut by the cutter. The end effector has a swivel between the cutter (and/or immobilizer) and the boom, the swivel rotatable continuously through 360 to rotate the cutter (and/or immobilizer) continuously through 360. The swivel has an internal fluid conduit through which hydraulic fluid may be transported from a hydraulic fluid reservoir to the cutter to hydraulically operate the cutter.