Patent ID: 7849577
Filing Date: 2010-12-14
Classification: B27D,B32B,Y10T

Abstract:
1. A method for preparing a diagonal grain ply for use in the fabrication of a sheet of plywood, said method comprising: providing an elongated web of wood having a length and a width; making a series of parallel cuts across, and diagonal to, the width of the web so as to sever the web into a plurality of nonrectangular parallelograms; cutting each nonrectangular parallelogram into two segments, the first segment defining a right triangle and the second segment defining a trapezoid which includes two right angles, one obtuse angle and one acute angle; and disposing one of said right triangular segments in an abutting relationship with one of said trapezoidal segments so that the hypotenuse of said right triangular segment abuts the side of said trapezoid extending between said acute angle and said obtuse angle, so as to define a rectangular ply.