U.S. Natural Resources, Inc.

Valley Machine Works Ltd.

Friedrich Weirathmueller

James D Woodford

Joe Weirathmueller

Khalil G Asal

In a first aspect of the invention, there is provided a new method for edging a wood board. This method comprises the steps of constructing from the scanned images of a wood board, a virtual entity of the wood board; determining from the scanned images an optimized cut line along the virtual entity; displacing the forward edge of the virtual entity ahead of the leading edge of the wood board; displacing the rear edge of the virtual entity behind the trailing edge of the wood board and sawing the wood board along the optimized cut line on the virtual entity. In another feature, the saw blades inside the board edger are mounted in saw collars and are shifted along the arbor by an electric setworks mounted on the top of the saw box and a shifting arm extending vertically between the setworks and a respective saw collar.

Optimized board edger and method of operation thereof

An improved log debarking apparatus characterized by a pair of shafts with cleated wheels for supporting and rotating a log under a rosser type debarking tool. The improved log debarking apparatus further has a plurality of log lifters movably supported about a common axis, and each having a profiled upper edge engageable transversally with a lower surface of a log on the cleated wheels. There is also provided a first lifter actuating means for alternately turning the log lifters from a retracted position below a radial projection of the cleated wheels, to a raised position above the cleated wheels, and into a log ejecting position wherein each profiled upper edge is inclined for rolling the log along and away from the cleated wheels. There is further provided a second lifter actuating means for moving the plurality of log lifters longitudinally relative to the shafts. The present invention also relates to a method for debarking a log, comprised of the following steps: raising the log above the cleated wheels; moving the log until a large lump on a surface of that log is positioned beside any of the wheels; laying the log back onto the wheels; and rotating the wheels and the log, and debarking the log.

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Nackawic, Canada

Friedrich Weirathmueller