B - Operations – Transporting – 27 – H
Patent
B - Operations, Transporting
27
H
342/12, 144/52
B27H 1/00 (2006.01) B27B 1/00 (2006.01) B27B 31/06 (2006.01) B27C 1/00 (2006.01) B27C 1/02 (2006.01) B27L 11/00 (2006.01)
Patent
CA 2035310
A method serves for flattening logs (10) showing a curved longitudinal center line (10a). The logs (10) are conveyed in horizontal position in their longitudinal direction, with their convex side (11) up and their concave side (12) down. The concave side (11) of the logs (10) is flattened from below in the area of their butt ends (27). In order to optimize the yield in wood, the logs (10) are measured, before carrying out the flattening step, in a position where they are supported on a reference plane (13) by the end points (20, 22) of their concave side (12) only. The geometrical position of a first point (26) of the log (10) is determined on the convex side (11) as its elevation above the reference plane (13). The butt end (27) of the log (10) is then lowered, while keeping the end point (20) opposite the butt end of the log constantly in contact with the reference plane (13), until the first point, which defines the lowest point between the said highest elevation (23) and the said butt end (27) on the said convex side (11), comes to lie at a level above the reference plane (13) which corresponds to the diameter (do) of the said log (10) at its end opposite the said butt end. Thereafter, the logs (10) are flattened in this lowered position up to the reference plane (13)
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