Log cabin construction

Claim 1

A log wall corner construction for use in the construction of corners in the walls of log cabin type structures and the like wherein the walls of such log cabin or the like structures are formed of tongued and grooved planks laid edge to edge, with end portions of said planks arranged in pairs in interlocking overlying relation, a said pair comprising; a first end portion of a first said plank, said first end portion having an end face and inner and outer faces, and upper and lower edges; notch means formed in said first end portion, extending from a said edge to about an intermediate point of said first plank and extending from said inner to said outer face thereof; an interlocking block portion, defined by a portion of said end of said first plank adjacent said notch means; a second end portion of a second said plank, having an end face and inner and outer faces, and upper and lower edges; notch means formed in said second end portion extending from a said edge to an intermediate point thereof and extending from said inner face to said outer face dimensioned to receive said block portion of said first end portion; an interlocking block portion defined by a portion of said end of said second plank adjacent said notch means; two sealing surfaces formed on one said end portion, transversely of the longitudinal axis of said plank adjacent said notch means, one said sealing surface being directed substantially towards said end, and the other sealing surface being directed inwardly whereby to form a projecting shoulder; two sealing surfaces formed on the other said end portion extending transversely of the longitudinal axis of said plank forming a complementary recess being dimensioned and oriented to receive said projecting shoulder on said one end portion, whereby when said two end portions are interlocked with one another with the block portion of one said end portion located within the notch means of the other said end portion , and said block portions overlapping and registering one above the other, said sealing surfaces interengage and abut with one another, and, fastening opening means in said block portions of both first and second end portions whereby fastening means may be interengaged between said overlapping block portions and operable to set up forces operating in a plane parallel to the axis of said planks diagonally across said corner whereby to draw said sealing surfaces into pressurized sealing engagement with said projecting shoulder fitting tightly into said complementary recess.