In various embodiments, a feeding device may comprise a support having feed cylinders arranged in a free end of a respective supporting arm and driven in rotation, wherein the supporting arms in a supported end are journalled in the support on shafts extending in parallel with each other and are pivotable about the shafts between a home position and a pivoted work position, and wherein the supporting arms are mutually connected to each other via a system of articulated links and by means of the links are forced to pivot jointly about their respective shafts, and a movement damping element, which is separate from the support, is integrated in the system of links and independently from the support configured to brake the return movement of the supporting arms from the pivoted position.

In various embodiments, a feeding device may comprise a support having feed cylinders arranged in a free end of a respective supporting arm and driven in rotation, wherein the supporting arms in a supported end are journalled in the support on shafts extending in parallel with each other and are pivotable about the shafts between a home position and a pivoted work position, and wherein the supporting arms are mutually connected to each other via a system of articulated links and by means of the links are forced to pivot jointly about their respective shafts, and a movement damping element, which is separate from the support, is integrated in the system of links and independently from the support configured to brake the return movement of the supporting arms from the pivoted position.

A remote-controlled tree trimmer including a climbing assembly, a cutting assembly, and a control device assembly. The climbing assembly includes a bottom ring and climbing structures. The climbing structures are attached to the bottom ring. The climbing structures move up and down said bottom ring in a trunk of a tree. The cutting assembly includes a top ring and a cutting element. The top ring is connected to the bottom ring. The top ring is above the bottom ring. The cutting element is inside the top ring. The cutting element rotates to trim slang of a tree. The control device includes a control device. The control device operates said cutting element to rotate and said climbing structures to move said bottom ring up and down.

A remote-controlled tree trimmer including a climbing assembly, a cutting assembly, and a control device assembly. The climbing assembly includes a bottom ring and climbing structures. The climbing structures are attached to the bottom ring. The climbing structures move up and down said bottom ring in a trunk of a tree. The cutting assembly includes a top ring and a cutting element. The top ring is connected to the bottom ring. The top ring is above the bottom ring. The cutting element is inside the top ring. The cutting element rotates to trim slang of a tree. The control device includes a control device. The control device operates said cutting element to rotate and said climbing structures to move said bottom ring up and down.

A debarker knife tip may be utilized in a debarker to remove bark from logs that pass through the debarker. The debarker knife tip may include a self-sharpening knife tip as a result of a wear material that is utilized to form one or more layers of the wear material to provide self-sharpening effect. In use. a portion of the self-sharpening knife tip of the debarker knife at a first cutting edge of the wear material may deteriorate away exposing a second cutting edge due to the self-sharpening knife effect. This self-sharpening nature of the wear material allows for the debarker knife tip to remove bark from logs that pass through the debarker in a more consistent manner for a longer period of time over the usable life span of the debarker knife tip.

A debarker knife tip may be utilized in a debarker to remove bark from logs that pass through the debarker. The debarker knife tip may include a self-sharpening knife tip as a result of a wear material that is utilized to form one or more layers of the wear material to provide self-sharpening effect. In use. a portion of the self-sharpening knife tip of the debarker knife at a first cutting edge of the wear material may deteriorate away exposing a second cutting edge due to the self-sharpening knife effect. This self-sharpening nature of the wear material allows for the debarker knife tip to remove bark from logs that pass through the debarker in a more consistent manner for a longer period of time over the usable life span of the debarker knife tip.