of the thread tension device is shown in the dotted lines of fig2 when the thread tensioning device 36 is activated by means of electromagnet 34 under control of the jacquard mechanism 12 it is moved into a position shown in the solid lines of fig2 the pattern thread is caused to interact with the remote pivot points or guides 70 72 and 74 causing loops 76 and 78 to form thereby increasing the tension on thread 44 each time a jacquard mechanism 12 activates electromatnet 34 spring 38 normally biases plate 80 of thread braking device 40 to its normally inoperative condition applying no restraint to thread 44 pattern thread 44 is fed through eyelet 82 of plate 80 as well as eyelet 52 in end plate 60 with the thread tensioning device 36 and the thread braking device 40 unactivated eyelets 52 and 82 are in line and therefore thread 44 may pass readily therethrough the operation of the thread braking device is more clearly shown with reference to the fig4 a and 4b which shows the braking device 40 in its unactivated condition fig5 a and 5b show the position of plates 60 and 80 when the thread braking device 40 is activated by the jacquard mechanism 12 the movement of plate 80 about pivot point 84 forces eyelets 52 and 82 to move out of alignment thereby causing additional resistance or drag to the pattern thread 44 passing therethrough fig3 shows a plurality of thread tensioning devices 36 and thread braking devices 40 in tandum and adjusted to operate on a plurality of pattern threads as shown one tensioning.