1. A METHOD FOR TRIMMING RELATIVELY LONG THREADS ATTACHED AT ONE END TO AWOVEN WEB, COMPRISING THE STEPS OF (A) MOVING SAID WEB IN A DIRECTION LYING IN THE PLANE OF SAID WEBS, (B) BRUSHING SAID THREADS GENERALLY LENGTHWISE OF THE DIRECTION OF WEB TRAVEL WITH THE ATTACHED WEB LEACING THE FREE END THEREOF, (C) BRUSHING SAID THREADS FORWARDLY AND OUTWARDLY OF SAID WEB AT A SPEED IN EXCESS OF SAID WEB AND (D) SERVING SAID THREADS WHILE SAID THREADS ARE DIRECTED IN A DIRECTION GENERALLY NORMAL TO THE PLANE OF SAID WEB.