Abstract: The present invention provides a method of producing cut timber from round timber comprising the steps of measuring the minimum diameter of each piece of round timber, sorting the round timber pieces and dividing them into groups of identical diameter, storing them in an intermediate storage device and feeding round timber pieces successively to a saw, which has been preset according to the diameter, for cutting timber sections, wherein the round timber logs to be processed are first cut to round timber pieces having a predetermined standard length, the minimum diameter is then measured on the individual round timber pieces, concentric, plane guide surfaces which are uniformly distributed over the periphery and spaced from each other at intervals depending on the measured diameter are provided, the round timber pieces are then sorted, and the round timber pieces are fed from the intermediate storage device to a cutter while being supported and guided by the guide surfaces, whereupon they are passed on for cut

Abstract: A method of producing heart planks and slabs from logs including cutting edge profiles of the slabs to be cut and then cutting the slab to separate it from the central heart plank.

Abstract: Log processing apparatus having a cutting station with guide surface cutting means for cutting exterior guide surfaces on a log, stationary guide means forward of the guide surface cutting means and engageable with the cut guide surfaces of a log for guiding the log along a process centerline of the apparatus, and entrance and exit transport mechanisms for transporting a log along the process centerline through and beyond the cutting station, the entrance transport mechanism having separate coaxial forward and rear log clamping means for feeding a log to and through the cutting station and stationary guide means to the exit transport mechanism.