Mo Och Domsjo Aktiebolag

Bo G Ekeborg

Stig-Gunnar Lofgren

Lars Gunnar Hogberg

A ground-clearing and mound-building device is provided that can be towed along the ground to move material on the surface to one side, expose the surface of the ground, and build mounds on the cleared ground for planting and forest regeneration, having a scarifier means mounted for rotation about its central axis, circular in cross-section, and having a peripheral surface that digs into the ground during rotation thereof when in contact with the ground under pressure, arranged to be brought into contact with the ground at any selected contact pressure; with control of at least one of the selected contact pressure and the selected rotation rate to dig, loosen, and displace a surface layer of the ground and push such loosened ground into mounds.

Ground-clearing and mound-building scarifier

A digging and planting machine is provided having a tubular digging and planting tool mounted on a vehicle travelling along the ground surface, and at least one sensing and signalling means for sensing the resistance of the ground to penetration by the digging tip of the tool, thus gauging the condition of the ground, and detecting obstacles to such penetration, so as to ensure that the digging tip provides and a plant is fed to a planting hole of the desired depth, when ground condition is suitable, and, when ground condition is not suitable, that new digging attempts continue to be made at closely-spaced intervals as the vehicle travels over the ground until a planting hole of the desired depth is dug, so as to plant as many plants as close together as desired per unit area.

Digging and planting machine

A digging and planting machine is provided having a tubular digging and planting tool, and at least one sensing and signalling means for sensing the resistance below and/or exceeding a predetermined minimum of the ground to penetration by the digging tip of the tool, thus gauging the condition of the ground, and detecting obstacles to such penetration, so as to ensure that the digging tip provides and a plant is fed to a planting hole of the desired depth, when ground condition is suitable, and, when ground condition is not suitable, that a digging attempt is aborted and a new attempt made as soon as possible.

An apparatus for cutting, felling, and debranching trees is provided, having a felling head carried on a mobile crane, the felling head including (i) a device for grasping and holding a tree; (ii) a device for cutting and felling a tree; and (iii) a device for debranching a tree, the felling head being pivotable between a position in which the tree can be cut and felled, and a position in which the felled tree can be debranched; since the tree holding, tree cutting and felling, and tree debranching means are all operatively carried on a common support, the felling head, the size of the apparatus is reduced, conserving weight, with a resultant increased maneuverability.

Apparatus for cutting, felling, and debranching trees

A digging and planting machine is provided having a tubular digging and planting tool, and at least two surface-detecting and signalling means for sensing the surface of the ground adjacent the digging tip of the tool, preferably on opposed sides of the digging tip, thus gauging the lay of the surface, so as to ensure that the digging tip provides and a plant is fed to a planting hole of the desired depth.

Digging and planting machine having plural surface detecting and

A digging and planting machine is provided having a tubular digging and planting tool, and means for compacting earth around the plant after planting, movable between ground-contacting and ground-elevated positions, the compacting means carrying the tubular digging and planting tool, and being movable into an earth-compacting position when the digging and planting tool is in a ground-elevated position.

Growing community of inventors

Bonassund, Sweden

Bo G Ekeborg