the sheathing of which consists of ribbons, endless aprons or the like, guided by driven rollers

Full Title

Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs > for walls, e.g. curved (E04G11/04 takes precedence) > Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like (E04G11/04 takes precedence) > the sheathing of which consists of ribbons, endless aprons or the like, guided by driven rollers