rolls may be on different machines in the field similarly the jet box 82 take up reel 84 drive motor and pulley 88 and moving profiles would be at various levels above and below one another other parts include the air jet 80 nip roll 86 finished package 87 and wetting device 90 the invention would be used most likely in connection with air texturizing machines that already have at least 2 feed rolls 30 and 40 fig2 shows the side view of the working apparatus a geared drive motor 1 moves mounting rods 3 in reciprocal relation to one another in other words as one rod has traveled maximum distance to the right the other rod has traveled maximum distance to the left and vice versa the terms right and left are chosen for convention in this example the rods are in connection with triangular shaped portions or profiles 4 which are mounted on the rods the profiles may be mounted by a pair of holes 52 placed in the rear of each triangle or by other means the tips of the triangular portions are so placed that they will contact a portion of a moving strand 20 of yarn as the strand comes off of one of the feed rolls this will occur as the triangular portions move back and forth across the moving yarn strand see fig9 which illustrates the movement of a triangle profile as it interacts with the yarn strand the rods may be mounted to the motor through a wheel and rod arrangement shown in fig4 and 5 the circular motion of the wheel.