Automatic edger saw
OwnerArthur M. G. McFarlane, Stuart R. McFarlaneinventors
Life of this patent
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Abstract
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 from the surface contour to produce a board satisfying predetermined criteria; and an edger saw controller connected to the computing device for providing control signals to the edger for causing the saw to cut the board along the selected line.
Claims26
A controller for a head rig edger for edging a board as it is cut from a log characterized by an irregular surface contour by a head saw comprising:
- inspection means for determining the surface contour of the log to be sawed in the plane of the headsaw;
- calculating means responsive to said inspection means for selecting an edger line through said log to produce a board satisfying predetermined criteria;
- and
- control means connected to said calculating means for providing control signals to said edger for causing said edger to cut said board along said line.
A controller for a head rig edger for edging boards as they are cut from a log having an irregular surface by a head saw in a plurality of passes comprising:
- inspection means for determining during a pass of the log ever the head saw, the surface contour of a board to be sawed from the log during a subsequent pass of the log past the headsaw;
- calculating means responsive to said inspection means for selecting an edger line through said log to produce a board satisfying predetermined criteria;
- and
- control means connected to said calculating means for providing control signals to said edger for causing said edger to cut said board along said line during said subsequent pass of said log past the headsaw.
Dependencies are inferred from the claim text.