a yarn false twist texturing apparatus which includes a yarn heater , a yarn cooling device , and a yarn twisting unit serially arranged along a yarn path of travel . the cooling device is composed of a cooling tube , and yarn guides are arranged so that the yarn advances spirally on the surface of the outside periphery of the tube . a yarn lifter is positioned so as to lift the advancing yarn from contact with the outside periphery of the cooling tube over a partial length of the cooling tube , so that the cooling effect can be influenced without significantly changing the spiral looping on the cooling tube .