Guiding means at a joint

A guiding means at a joint between boards, the joint comprising groove and tongue intended to be joined by means of glue wherein the tongue includes at least one guiding wedge whereby a fitting clearance between the tongue and the groove includes a first fitting clearance and a second, guiding, fitting clearance, which second, guiding, fitting clearance is obtained through the guiding wedges which are arranged parallel to the extension of the joint, whereby the first fitting clearance comprises a main part of a fit between the boards and the second, guiding fitting clearance comprises a smaller part of the fit, that the first fitting clearance is in the range 0.1-1 mm, while the second, guiding, fitting clearance is in the range 0.01-0.2 mm and that the tongue of the joint is provided with at least one equalizing recess so that at least one equalizing cavity is formed in the joint, which equalizing cavity receives surplus glue used during the joining, wherein the equalizing cavity is formed at an upper side base of the tongue through said at least one equalizing recess, said at least one equalizing recess having an opening directed upwards and outwards whereby a considerable part of the hydraulic pressure, caused by the glue in the equalizing cavity during assembly will be directed upwards whereby the force, caused by the hydraulic pressure, urging the joint apart during the assembly is radically reduced and the tongue is provided with a number of vents in the form of holes connecting the equalizing cavity to a lower side of the tongue.

A guiding means at a joint between boards, the joint comprising groove and tongue intended to be joined by means of glue wherein the tongue includes at least one guiding wedge whereby a fitting clearance between the tongue and the groove includes a first fitting clearance and a second, guiding, fitting clearance, which second, guiding, fitting clearance is obtained through the guiding wedges which are arranged parallel to the extension of the joint, whereby the first fitting clearance comprises a main part of a fit between the boards and the second, guiding fitting clearance comprises a smaller part of the fit, that the first fitting clearance is in the range 0.1-1 mm, while the second, guiding, fitting clearance is in the range 0.01-0.2 mm and that the tongue of the joint is provided with at least one equalizing recess so that at least one equalizing cavity is formed in the joint, which equalizing cavity receives surplus glue used during the joining, wherein the equalizing cavity is formed at an upper side base of the tongs through said at least one equalizing recess, said at least one equalizing recess having an opening directed upwards and outwards whereby a considerable part of the hydraulic pressure, caused by the glue in the equalizing cavity during assembly will be directed upwards whereby the force, caused by the hydraulic pressure, urging the joint apart during the assembly is radically reduced and the tongue is provided with a number of vents in the form of holes connecting the equalizing cavity to the lower portions of the joint.

A guiding means at a joint between boards, the joint comprising groove and tongue intended to be joined by means of glue wherein the tongue includes at least one guiding wedge whereby a fitting clearance between the tongue and the groove includes a first fitting clearance and a second, guiding, fitting clearance, which second, guiding, fitting clearance is obtained through the guiding wedges which are arranged parallel to the extension of the joint, whereby the first fitting clearance comprises a main part of a fit between the boards and the second, guiding fitting clearance comprises a smaller part of the fit, that the first fitting clearance is in the range 0.1-1 mm, while the second, guiding, fitting clearance is in the range 0.01-0.2 mm and that the tongue of the joint is provided with at least one equalizing recess so that at least one equalizing cavity is formed in the joint, which equalizing cavity receives surplus glue used during the joining, wherein the equalizing cavity is formed at an upper side base of the tongue through said at least one equalizing recess, said at least one equalizing recess having an opening directed upwards and outwards whereby a considerable part of the hydraulic pressure, caused by the glue in the equalizing cavity during assembly will be directed upwards whereby the force, caused by the hydraulic pressure, urging the joint apart during the assembly is radically reduced and the tongue is provided with a number of vents in the form of holes connecting the equalizing cavity to a lower side of the board.