Abstract: An apparatus automatically repairing broken warp threads in weaving machines or looms. The apparatus comprises a computerized control system having a memory storing predetermined characteristics for drawing-in of a harness and reeding each one of a plurality of weaving machines. The control system receives information on a row of drop wires which has brought about a stoppage in one of the weaving machines. A detecting device is controlled by the control system, which detecting device determines a numerical position of the fallen drop wire in a row of drop wires which contains the fallen drop wire, and sends information of this position to the computerized control system. A moving reed space counting device also controlled by the control system moves along the reed of the weaving machine and stops directly opposite the reed space at the location of a broken end corresponding to the fallen drop wire, responsive to information received as to the position of the fallen drop wire by the control system.