METHOD FOR MANUFACTURE OF QUARTERED LUMBERS Russian patent published in 2002 - IPC

FIELD: wood-working industry, mainly lumber industry, applicable for production of quartered lumbers without knots. SUBSTANCE: the method consists in disbarking, length cutting of logs into quadrants, sawing of quadrants into lumbers. Length cutting of logs is accomplished in the knot lines up to the pith. Sawing of quadrants into lumbers is accomplished in planes parallel to the plane passing through the bisectors of the angles of the quadrant end sections with a subsequent removal of the wane and edge with remnants of knots. EFFECT: enhanced yield of high-quality quartered lumbers without knots. 4 dwg