A controller for a head rig edger saw for sawing the edges of a board that is cut from a log by a head saw includes a detector for determining the surface contour of the log to be sawed, along a line displaced from the face of the log; a computer device for selecting an edger saw line through the log...http://www.google.fr/patents/US4941100?utm_source=gb-gplus-shareBrevet US4941100 - Automatic edger saw
