PURPOSE: To prevent occurrence of AYAMAKURA (one defect of woven fabric, stripe occurring in the width direction produced by leaving weaving machine in an open state for a long time) and occurrence of weaving damage resulting from end breakage before they happen by previously making an auxiliary nozzle for weft inserting spout and carrying out one-shot weft inserting through a main nozzle before reopening of weaving after stopping of frame.

CONSTITUTION: In a jet loom wherein weft inserting is done by spouting action of a main nozzle for weft inserting and weft is sucked to feed yarn end of cloth through spouting action of an auxiliary nozzle for weft inserting, after a frame having caused mistaken weft inserting is stopped, a cloth fell is previously transferred from a normal position to a woven cloth side and the frame is slowly inverted. Then the cloth fell is returned to the normal position and then weft subjected to weft inserting just before stopping of the frame is removed. Then before reopening of weaving, in a spouted state of the auxiliary nozzle for weft inserting, weft is subjected to one-shot weft inserting through the main nozzle for weft inserting.