A heald frame, constructed to have upper and lower framestaves and left and right side stays coupled to one another, the coupling between the framestaves and the side stays adjustable to increase or decrease the distance between the upper framestave and the lower framestave. The heald frame is also able to change the distance between upper and lower carrier rods, which are fixed to the upper and lower framestaves respectively, thereby permitting the adjustment of the distance between the ends of a multiplicity of healds which span a distance between the upper and lower carrier rods. The coupling is made from a side stay with a jointing convex part capable of being adjustably coupled to a holder. The adjustable jointing convex part and the holder, which are mounted together in the framestaves, are adapted to be fixed in a selected position. This results in the ability to vertically adjust the framestave in relation to the side stay and in course, the distance between cooperating carrier rods and the ends of healds carried thereon.