A method and apparatus for retractably supporting lumber cants above feed chains in a cant positioner-feeder for locating the cant in a position to optimize lumber yield. The cants are supported with retractable cant supports interpositioned between the feed chains. The retractable cant supports may...http://www.google.fr/patents/US4386641?utm_source=gb-gplus-shareBrevet US4386641 - Retractable cant supports for lumber cant positioner-feeders
Retractable cant supports for lumber cant positioner-feeders
