Glued corner-joints
OwnerRichard Bent Nisseninventor
Life of this patent
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Abstract
The corner-joint or the angular joint of oblong elements formed of a glueable material preferably wood is provided. A block is inserted in the corner and a joining surface of the block and the elements to be joined is provided with intermeshing tongues and grooves preferably of the finger-type form in their longitudinal direction a segment of a circle about an axis perpendicular to the plane of the joint elements. The matching fingers are glued together. The joint of this invention may be used for instance in a lattice girder and especially in frames for furniture. Further by a simple provision it will be possible to obtain a three-dimensional joint by adding a third element extending in the direction perpendicular to the plane of said two elements.
Claims17
A corner joint comprising a pair of elongated, angularly related, elements arranged to form part of the corner joint, a block connecting said pair of elements along the inside of said corner joint and lying in a plane formed by said angularly related elements, the adjoining surfaces of the block and the respective elements each being provided with and interconnected by tongues and grooves, the tongues and grooves of each said surface having outer tips and bases respectively which lie coincident with segments of circles having a common axis perpendicular to the plane of the elements in the corner joint, each of the ends of said pair of elements in the corner joint carrying respective tongues and grooves, the tongues and grooves of said ends being interconnected to join said elements one to the other, said block being elongated and spaced from the joined ends of said elements.
A corner joint comprising a pair of elongated, angularly related, elements arranged to form part of the corner joint, a block connecting said pair of elements along the inside of said corner joint and lying in a plane formed by said angularly related elements, the adjoining surfaces of the block and the respective elements each being provided with and interconnected by tongues and grooves, the tongues and grooves of each said surface having outer tips and bases respectively which lie coincident with segments of circles having a common axis perpendicular to the plane of the elements in the corner joint, the segments of the circles defined by the outer tips and bases of the tongues and grooves of the adjoining surface of one element having a common axis with the segments of the circles defined by the outer tips and bases of the tongues and grooves of the adjoining surface of the other of said elements.
A glued corner-joint joining the ends of two oblong elements
- said ends being joint in mitre by tongues and grooves, which in their longitudinal direction follow segment of a circle about an axis perpendicular to the plane of said elements,
- a block of nearly half-circular outline, inserted in the corner and joined to said elements by tongues and grooves. which in their longitudinal direction follow a segment of a circle about an axis perpendicular to the plane of the elements.
Dependencies are inferred from the claim text.