Abstract: The present invention relates to a weft pass loom comprising on the batten a shuttle provided with end grips for the weft threads as well as on the frame with devices for the correction of the shuttle position and for the opening of the shuttle grips, characterized in that it comprises, fixed to each of the sides of the frame, independent devices for correcting the position of the shuttle and for opening the grips, whereby each of these devices is provided with a regulating means.