Prefabricated building log sections

Claim 1

In a wall structure of a log building comprising at least two log sections joined together end-to-end, and said log sections being interfitted with at least a third log section in a superposed manner, each of said log sections and third log section having a pair of spaced parallel longitudinal tongue members formed in the upper surface therein, said tongue members defining a central upper groove extending throughout the entire longitudinal upper surface of the log section, two raised platforms formed on the longitudinal edge portions of the upper surface therein, a pair of spaced parallel longitudinal channels formed in the middle portion of the lower surface therein, said channels having a complementary cross-sectional configuration of that of said tongue members and having cross-sectional dimensions at least equal to or larger than the cross-sectional dimensions of said tongue members and said channels defining a central lower tongue extending throughout the entire longitudinal lower surface therein, two rabbets formed at the longitudinal edge portions of the lower surface therein, said rabbets having a configuration complementary to that of said raised platforms whereby said rabbets of at least one of said log sections interfit with said raised platforms of said third log section to form an enclosed space between the channels of said one of said log sections and the tongue members of said third log section, each of said log sections and third log section having a center bore extending throughout their respective entire longitudinal central portion, a circular groove formed at the end surfaces of each of said log sections and third log section, said circular groove encircling the end portions of said center bore therein, said circular groove having two diametrically opposite radial grooves extending radially outward from said circular groove and extending to the bottom surface of said central upper groove and central lower tongue respectively.