Abstract: A planting system (100) for arrangement on a vehicle (110) comprises at least one plant arm (130) comprising a plant head (140) configured to penetrate ground and a plant feeding device (120) configured to feed plant seedlings (125) to the plant arm by dropping the plant seedlings from the plant feeding device. The plant arm comprises at least one articulation (180) and is configured to receive plant seedlings (125) and to guide the plant seedlings to the plant head. The planting system is configured to operate the plant arm by penetrating the ground and release the plant seedlings from the plant head into the ground while the plant system (100) is in motion and the plant head has a fixed position relative the ground. The plant seedlings fall from the plant feeding device (120) to the plant head (140) while the plant arm (130) is in motion.

Abstract: A planting system (100) for arrangement on a vehicle (110) is provided and comprises at least one plant arm (130) comprising a plant head (140) configured to penetrate ground and a plant feeding device (120) configured to feed plant seedlings (125) to the plant arm by dropping the plant seedlings from the plant feeding device. The plant arm comprises at least one articulation (180) and is configured to receive plant seedlings (125) and to guide the plant seedlings to the plant head. The planting system is configured to operate the plant arm by penetrating the ground and release the plant seedlings from the plant head into the ground while the plant system (100) is in motion and the plant head has a fixed position relative the ground. The plant seedlings fall from the plant feeding device (120) to the plant head (140) while the plant arm (130) is in motion.

Abstract: Method and device for delimbing a tree trunk (60) in a compliant gripping state defined by a set of limbing knives (18, 24, 26, 28) enclosing the trunk. The limbing knives are repeatedly adjusted through a control unit (46) for adaption of the gripping state to a varying thickness of the trunk when the trunk is advanced between the knives for the delimbing of the trunk. The invention comprises entering a desired compliance (D1) of the gripping state in the control unit (46), detecting an actual compliance (d) of the gripping state, and performing each adjustment of the limbing knives via the control unit until the actual compliance (d) corresponds to the desired compliance (D1).

Abstract: Method and device for the determination of a thickness of a cross-section (S) of a tree trunk (30) received in a harvesting assembly (10) comprising a pair of opposite feed wheels (14) engaging with the tree trunk and a delimbing knife (18) abutting against the tree trunk. The mutual position of the feed wheels is detected as a measure of a transverse dimension (D1) of the cross-section of the tree trunk. The position of the delimbing knife (18) in relation to an abutment surface (22) of the tree trunk opposite thereto is detected as a measure of an additional transverse dimension (D2) of the cross-section (S) of the tree trunk, which additional transverse dimension forms an essentially right angle with the first-mentioned transverse dimension. The thickness of the cross-section (S) of the tree trunk is calculated based on the two measures of the transverse dimensions (D1, D2).

Abstract: A saw box for preventing chain shot from a broken sawchain of a chainsaw, the saw box including a stationary shield that covers a rear section of the saw. The shield has an end surface that extends between an outer surface and an inner surface of the shield and has such hardness and is designed with a convex curvature of such a radius that one part of the broken sawchain that comes to an external location during operation of the saw can slide around the end surface in an essentially unhindered manner in a direction towards the inner surface.

Abstract: Method and device for delimbing a tree trunk (60) in a compliant gripping state defined by a set of limbing knives (18, 24, 26, 28) enclosing the trunk. The limbing knives are repeatedly adjusted through a control unit (46) for adaption of the gripping state to a varying thickness of the trunk when the trunk is advanced between the knives for the delimbing of the trunk. The invention comprises entering a desired compliance (D1) of the gripping state in the control unit (46), detecting an actual compliance (d) of the gripping state, and performing each adjustment of the limbing knives via the control unit until the actual compliance (d) corresponds to the desired compliance (D1).

Abstract: Method and device for the determination of a thickness of a cross-section (S) of a tree trunk (30) received in a harvesting assembly (10) comprising a pair of opposite feed wheels (14) engaging with the tree trunk and a delimbing knife (18) abutting against the tree trunk. The mutual position of the feed wheels is detected as a measure of a transverse dimension (D1) of the cross-section of the tree trunk. The position of the delimbing knife (18) in relation to an abutment surface (22) of the tree trunk opposite thereto is detected as a measure of an additional transverse dimension (D2) of the cross-section (S) of the tree trunk, which additional transverse dimension forms an essentially right angle with the first-mentioned transverse dimension. The thickness of the cross-section (S) of the tree trunk is calculated based on the two measures of the transverse dimensions (D1, D2).

Abstract: An arrangement for the capture of a broken sawchain (16) of a chainsaw (10) comprising a stationary shield (32) that covers a rear section of the saw. The shield (32) has an end surface (42) that extends between an outer surface and an inner surface of the shield (32) and has such hardness and is designed with a convex curvature of such a radius that one part of the broken sawchain (16) that comes to an external location during operation of the saw (10) can slide around the end surface (42) in an essentially unhindered manner in a direction towards the inner surface.

Abstract: A feed wheel (10) for tree trunks, with rows of drive teeth (30) protruding from extended supports (20) united with a peripheral surface (18) of the wheel. In order to make the spaces between the supports (20) more self-clearing, supports (20) that are neighbours extend mutually divergently throughout the complete sideways direction of the peripheral surface (18) (at an angle ?).

Abstract: A feed wheel (10) for tree trunks, with rows of drive teeth (30) protruding from extended supports (20) united with a peripheral surface (18) of the wheel. In order to make the spaces between the supports (20) more self-clearing, supports (20) that are neighbours extend mutually divergently throughout the complete sideways direction of the peripheral surface (18) (at an angle ?).

Abstract: A check valve (4) with spherical, spring-loaded valve head (25) is used for pulsating flows, especially in a fuel injection system for Otto engines. As a result of low flow resistance, such check valves have had a tendency to cause noise when the valve head (25) strikes down against the valve seat (11) during pulsating of the flow caused by selective opening of the fuel injection nozzles. The valve head (25) is designed with a flange (7) downstream of the valve seat (11), and this flange (7) interacts with a narrow boring (13) during the first part of the opening stroke. Consequently, a secondary throttling (12) is formed, in addition to the primary throttling between the valve head (25) and the valve seat (11), which contributes to the valve head being forced away at a distance from the valve seat.

Abstract: A feed roller intended for a timber processing unit includes a roller body having disposed on its outer periphery elastically supported engagement devices for driving engagement with a tree trunk advanced by the roller. In accordance with the invention, it is proposed that the engagement devices include mutually separated elements (20) and that each of the elements is moveably connected to the roller body (10) at its outer periphery.