Fig. II-A. Shows the completion of course 2, the carriers having travelled over to the left. The splicing yarn forms its selvedge loop on needle 4 in the normal manner, but the main yarn does not selvedge on needle 6 (i.e., two needles further out) as it should in theory, but presses off this needle and forms only one loop on needle 5.
Fig. III-A. Shows the completion of course 3 with the carriers occupying the same position as in Fig. I-A. The splicing yarn is still knitting normally on needle 4, and the main yarn is fed to needles 5 and 6 as in course 1, but it now knits on needle 5.
Fig. IV-A. The carriers have now returned to the left hand side, and the splicing yarn again selvedges on needle 4. The main yarn knits on needle 5 but since there is nothing to hold the end loop (6) the selvedge comes “off” and a long loop is formed at “a”.
Fig. I-B. Shows the completion of course 5 with the carriers on the right but widened out two more needles. Since needle 5 has previously “picked up” on the main yarn the splicing will knit normally on this needle, but is only laid round needle 6. Similarly the main yarn is merely laid round needles 7 and 8.
Fig. II-B. The carriers have now returned to the left, and since the loops round needles 6, 7 and 8 have nothing to hold them in position, the splicing yarn will pull out again and selvedge on needle 5. while the main yarn drops its loop off the end needle (as in Fig. II-A) and leaves a loop hanging round needles 6 and 7.
Fig. III-B. The carriers are on the right hand side again and occupy the same positions as in Fig. I-B. The splicing yarn knits on needle 5 as before, but in this case it also picks up on needle 6 because this needle now contains a loop “b”. The loop “b” extends across needles 6 and 7 and is actually the beginning of a “runner”, but the “runner” is split at this course owing to the fact that the splicing yarn only extends to needle 6.