| 摘要 |
A lumber dressing and dimensioning machine having coacting feed rolls which grip and feed lumber lengthwise and in succession to and between a pair of medially pivoted abrasive belt type abrading heads oriented to simultaneously act on the opposite side edge surfaces of the lumber, to thereby dimension the width of the lumber, and then to and between a second pair of medially pivoted abrasive belt type abrading heads oriented to simultaneously act upon the top and bottom faces of the lumber to give the lumber its prescribed thickness. In both sets of abrading heads, one of them is adjustable towards and from the other to enable the machine to handle different sized lumber. The abrading heads which act upon the side edge surfaces of the lumber are freely transversely shiftable in unison, to accommodate edgewise bowed or warped lumber. Abrasive flap brushes are arranged to finish the surfaces of the lumber and, at the same time, round off its longitudinally extending corners. |
