Fastening of a profile bar to an adjustment spindle in a head box

In a headbox of a paper machine, comprising a profile bar at a discharge opening of the headbox and at least one adjustment spindle for adjustment profile of the profile bar which in turn determines transverse profile of the discharge opening, a fastening arrangement for the profile bar to the at least one adjustment spindle, comprising

• a pair of recesses disposed on opposite sides of the profile bar,
• a recess provided in an end of the at least one adjustment spindle facing toward the discharge opening,
• means for interconnecting the profile bar with the at least one adjustment spindle, being shaped substantially complementary to said profile bar recesses and extending into said adjustment spindle recess,
• said profile bar being aligned with the at least one adjustment spindle when interconnected therewith by said interconnecting means,
• wherein the profile bar comprises a center plane, the adjustment spindle comprises an axial center plane, and said center plane of the profile bar substantially coincides with said axial center plane of the adjustment spindle,
• wherein said interconnecting means comprise a screw having an end shaped substantially complementary to one of said profile bar recesses, and
• wherein said pair of recesses are situated substantially coaxially and substantially symmetrically with respect to the center plane of the profile bar, with the shape of each said recess forming a part of a spherically-shaped face or a conically-shaped face on said profile bar.