Patent ID: 6460583
Filing Date: 2002-10-08
Classification: B27M,E04B,E04F,F16B

Abstract:
A method of forming a watertight plank section, comprising the steps of:a) sawing green wood planks, including the heart of the log adjacent one side of the plank; b) machining some of the planks to include a groove on each edge; c) machining some of the planks to include a tongue on each edge; d) cutting cross grooves in one side of each plank, with the cross grooves being on the heart side of planks with two tongues and/or the opposite side of plank with two grooves; e) fabricating a section, placing a plurality of planks on a surface, heart's alternating, tongue to groove with the cross grooves facing upwardly; f) clamping the planks forcing adjacent tongues and grooves to mate; g) securing the planks by fastening dry wood cross ties in each of the cross grooves; and h) drying the section forcing the tongues against one side of the groove forming a watertight seal.