5 are fitted with a seat 18 illustratively in the form of a longitudinal groove the stops 15 16 are strips received in this seat 18 and are affixed for instance by bonding such a seat 18 is recommended for new heald frames in accordance with the invention if on the other hand already extant heald frames are being retrofitted to correspond with frames made in accordance with the invention other means may be used to mount the strip shaped stops 15 16 illustratively the latter may be mounted by fasteners to the crossbars 4 5 in such a way that they rest on the mutually opposite edges moreover affixing elements may be used that are affixed to but spaced from the crossbars 4 5 in the latter case those sides of the strip shaped stops 15 16 which are located opposite the healds 10 shall be appropriately reinforced by a reinforcing rail as shown in the illustrative embodiment of fig4 and 5 a substantial improvement is attained even if only one strip shaped stop 15 is used on one side that is as regards this embodiment at the upper crossbar 4 in this configuration and as shown in fig4 the healds 10 u2032 are raised by a drive surface of the upper rail 6 said drive surface being situated opposite a cooperating surface of the upper guide element 13 u2032 in this embodiment the lower rail 7 is used only to guide the heald 10 u2032 transversely in this embodiment of fig4.