PURPOSE: To provide the title reed intended to do away with the current such inconveniences as to require reed to be replaced for each fabric and to prevent yarn intervals from getting indefinite, designed to allow to slide freely left and right through stretching and contraction of a wavy spring within a frame.

CONSTITUTION: The objective reed designed to allow to slide left and right through stretching and contraction of a wavy spring within a frame 2. Furthermore, in order to make yarn intervals constant over a wavy comb teeth, it is preferable to use such yarn-pressing bars 5', 5" as to be designed to press yarns vertically at a given position and allow to slide vertically through reopening.