Abstract:
A terrain-going vehicle of the forked frame type, the stem fore end being supported by a front wheel shaft, and the fork legs being at each end supported by a different rear bogie shaft; said legs having their inner ends pivoted to the frame; the rear end of the frame, extending between the two fork legs, supports a movable fundament plate, and the fore end of the frame is rotatable around its longitudinal axis with respect to the rest of the frame; a hydraulic jack forming an upstanding telescopic bar connected between each leg and an associated point on said fundament plate, the two jacks being separately operable to keep the fundament plate level, even when driving along a lateral slant in the terrain and facilitating the overcoming of ground obstacles.
Abstract:
An apparatus for processing felled trees, wherein the trees are advanced in the longitudinal direction by feed rolls with friction-increasing gripping members, such as spikes, on the roll surface is characterized in that it includes nozzles, which in synchronysm with the feeding of the tree by the feed rolls, spray out a liquid to protect the wood against blue-stain fungus or the like at least in those parts of the tree stem surface which have been depressed by the gripping members. The nozzles are stationed about the passage for the tree stem and are directed radially relative thereto, preferably in a plane downstream of the feed rolls. Preferably at least three of these nozzles are provided.
Abstract:
Timber in many cases is fed in its longitudinal direction by contact with jags on a driven roll. In certain cases the roll can be built up of plates carrying the jags and extending in the longitudinal direction of the roll. According to the invention, these plates can be rockingly mounted about axles in parallel with the roll axle, so that always two adjacent plates can adjust themselves to be on the same plane, thereby doubling the drive force compared with the conventional arrangement with stationary plates and reducing the tendency of sliding.
Abstract:
The delimbing apparatus of the present invention is an improvement over the conventional chain link type of delimber, the improvement being characterized in that the cutting circumference of the chain link device of the apparatus acts in the axial direction of the link pivots and is offset successively in said direction for consecutively shearing off limbs projecting from the same tree trunk level.