vertical motion of the second group warp h2 and beating this sequence is repeated for the i group left warp hi1 and i group right warp hi2 until finally the above picking vertical motion and beating have been completed for the n group left warp hn1 and n group right warp hn2 the condition after completion of said vertical motion is illustrated in fig2 b the above actions are now re commenced from the n group warp hn towards the first group warp h1 when the weft l has returned to the starting point of the first picking one cycle of weft insertion is completed the condition at completion of one cycle is illustrated in fig3 the movement of weft l is a zigzag movement from one side of the loom to the other side as to the weave construction plain weave was employed in this example to obtain an extra broad woven fabric consisting of n consecutive unit webs each having a width substantially equal to the loom width the present invention is now described in further detail from operation points of view in weaving the warp h is first divided into a plurality of stages and passed through the mails eyes of harnesses.