Patent ID: 8220500

Claim:
A power loom, comprising: a frame; a plurality of warps mounted on the frame; a weft spool located beside the frame; a plurality of wefts wound around the weft spool and drawn into the frame to combine with the warps; and a speed adjustment device connected with the weft spool to adjust a rotation speed of the weft spool so as to adjust an output speed of the wefts; wherein the speed adjustment device includes: a support rack located beside the frame to support the weft spool; a rotation shaft rotatably mounted on the support rack and extended through the weft spool to rotate the weft spool; a drive motor mounted on the support rack and connected with the rotation shaft to rotate the rotation shaft; a sensor mounted on the support rack and electrically connected with the drive motor; a press member pivotally connected with the support rack and movable to pass through the sensor to activate the sensor; and a press rod mounted on the press member and pressing the wefts to tension the wefts.