Satin Or Broken Twill. In weaving this class of fabrics the peculiarity is that the order of interweaving the two sets does not follow consecutively, but at intervals. In these the order of interweaving is (generally) at every fifth end or pick, and the two succeeding picks do not interweave with adjoining ends, but at intervals of two. In other words, if No. 1 pick passes over the first end of warp, No. 2 will pass over the third end, and so on, in an irregular manner, in order to prevent the construction of a twill or ridge.