METHOD FOR CUTTING OF ROUND TIMBERS HAVING A PITH ROT Russian patent published in 2007 - IPC B27B1/00 

FIELD: forest industry, applicable in production of sawn timber.

SUBSTANCE: the method consists in determination of the shape and parameters of the pith layer, division of the timber into sectors in the longitudinal direction in planes passing through the centers of the affected layer in the crown and butt end. The obtained sectors are divided into parts in the curvilinear generating line of the cutting tool having, for example, the shape of a cylinder, shifting the plane of division in the bisector of the sector angle. The obtained parts are straightened by rolling between the rigid components, for example, by rolls, then the parts are compacted and dried so as to reduce the elastic stresses. After drying the parts are turned relative to each other by 180 deg in the vertical and horizontal planes, the working surfaces are joined and fastened to each other, for example, by cementing together.

EFFECT: enhanced yield of qualitative products.

4 cl, 10 dwg