Orthogonal construction joint

A method of forming an orthogonal construction joint, comprising:

• arranging four elongated structural members so that the first and second members are disposed in-line with one another for use in a frame, and the third and fourth members are coaxially disposed at right angles to the first and second members, to extend perpendicular to the plane of the frame,
• forming tenons on the adjacent ends of the third and fourth members, which comprise back-to-back pairs of angularly offset connector blades that extend axially outwardly from the adjacent ends of the third and fourth members in the space therebetween and in relatively inverted disposition to one another so as to divide the opposing surfaces of the adjacent ends of the third and fourth members into sets of four coplanar abutments apiece, the opposing abutments of which, from set to set, are disposed relatively radially within the angular bights formed by the pairs of blades,
• forming recesses in the relatively adjacent end portions of the first and second frame members, and shaping the recesses so that they have pairs of correspondingly angularly offset surfaces thereon,
• interengaging the first and second frame members with the tenons on the adjacent ends of the third and fourth members so that the surfaces on the recesses in the end portions of the frame members are relatively inverted to one another in the joint, the end portion of one of the frame members is engaged with the adjacent ends of the third and fourth members and the tenons at the bight between one pair of opposing abutments on the surfaces of the third and fourth members, and the end portion of the other frame member is engaged with the adjacent ends of the third and fourth members and the tenons at the bight between the pair of opposing abutments on the surfaces of the third and fourth members, diametrically opposing to the aforesaid one pair of opposing abutments on the same.

An orthogonal construction joint comprising:

• at least three elongated structural members, the first and second of which are disposed at right angles to one another in a common plane for use in a frame, and the third of which is disposed at right angles to the plane of the first and second members, to extend crosswise of the frame,
• there being a tenon formed on one end of the third member, which comprises a pair of angularly offset connector blades that extend axially outwardly from the one end of the third member so as to divide the surface of the same into coplanar abutments, one of which is disposed relatively radially within the angular bight of the blades, and a second of which is disposed relatively radially outside the bight, adjacent one blade thereof,
• the relatively adjacent end portions of the first and second frame members having recesses formed therein which have pairs of correspondingly angular offset surfaces thereon, whereby the first and second frame members are interengageable with one another and the tenon on the one end of the third member so that the pairs of surfaces on the recesses in the end portions of the frame members are relatively inverted to one another in the joint, the end portion of one of the frame members is engaged with the one end of the third member and the tenon at the aforesaid one abutment on the surface of the third member, and the end portion of the other frame member is engaged with the one end of the third member and the tenon at the second abutment on the surface of the third member, and with the side of the one frame member angularly offset from the other blade of the tenon, to produce a closed corner between the first and second frame members, relatively radially within the bight of the blades of the tenon, and
• means for securing the first and second frame members to the third member, including pin-like fastener means which are insertable in the aforesaid joint-forming end portion of the one frame member at a point offset from the corner on the aforesaid angularly offset side of the one frame member, and engageable with the other blade of the tenon, to secure the one frame member to the third member through the tenon.

An orthogonal construction joint comprising:

• four elongated structural members arranged so that the first and second members are disposed in-line with one another for use in a frame, and the third and fourth members are coaxially spaced apart from one another at right angles to the first and second members, to extend perpendicular to the plane of the frame,
• there being tenons on the adjacent ends of the third and fourth members, which comprise back-to-back pairs of angularly-offset connector blades that extend axially outwardly from the adjacent ends of the third and fourth members in the space therebetween, and in relatively inverted disposition to one another so as to divide the opposing surfaces of the adjacent ends of the third and fourth members into sets of four coplanar abutments apiece, the opposing abutments of which, from set to set, are disposed relatively radially within the angular bights formed by the pairs of blades, and
• the relatively adjacent end portions of the first and second frame members having recesses formed therein which have pairs of correspondingly angularly off-set surfaces thereon, whereby the first and second frame members are inter-engageable with the tenons on the adjacent ends of the third and fourth members so that the surfaces of the recesses in the end portions of the frame members are relatively inverted to one another in the joint, the end portion of one of the frame members is engageable with the adjacent ends of the third and fourth members and the tenons at the bight between one pair of opposing abutments on the surfaces of the third and fourth members, and the end portion of the other frame member is engageable with the adjacent ends of the third and fourth members and the tenons at the bight between the pair of opposing abutments on the surfaces of the third and fourth members, diametrically opposing to the aforesaid one pair of opposing abutments on the same.