of the device not illustrated in detail it is formed on one portion of its circumference with a radial slot 101 through which the gear 94 extends into engagement with the annulus of gear teeth 93 this assures that the ring 92 will turn whereas the housing 96 is stationary and while the housing 86 remains stationary also as a result of this the filament 15 will perform in the region of the spool 67 a movement in the direction of the arrow 102 about the stationary housing 86 so that the rear imaginary conical surface on which the filament 15 travels is elongated because due to this synchronous movement the bore 97 and the ring 92 rotates in alignment with the opening 56 in the rotor 47 so that after half a rotation of the rotor the filament 18 will move into the broken line position 15 39 even at the reverse side of the rotor 57 the filamentary elements 61 61 39 61 34 pass after they have traveled through the slot 85 of the housing 86 through appropriate bores 59 59 39 59 34 in the rotor insert 55 before they reach the front side of the rotor 47 the rotor insert 55 is stationary and can if desired be fixedly connected with the stationary housing 86 the filamentary elements 61 61 34 travel in a horizontal plane laterally adjacent one another at predetermined spacing in the region of the member 16 which is here advantageously again branched to form the branches 16 39 16 34 as in fig1 the further movement of the filamentary elements 61 61 34 in the region where the weaving takes place is shown in fig1 and 20 in these figures the same reference numerals are used as in fig1 and 16.