To readily suck and remove a deposit on a fabric face such as waste yarns entangled on woven texture without specially depending upon a powerful suction fan, by installing vibration providing means in the vicinity of an opening part of a suction slit at the tip of an air suction nozzle.

An air suction nozzle 1 is connected through a suction duct 7 to a suction fan and a suction slit 9 to be adsorbed on the undersurface of a fabric face 3 and to suck waste yarns on the surface is formed in the width direction of the fabric face. A vibrator plate 10 positioned in the vicinity of the opening part of the slit 9 is supported through a vibration frame 11 and a vibration absorption spring 12 on a machine body frame 8 and the vibrator frame 11 is connected through plural connecting pins 14 to a vibration generator 13.