IPC 2013 : D04B 23/18 : with provision for narrowing or widening.

IPC2013 > D > D04 > D04B > D04B 23/00 > D04B 23/18[2] > with provision for narrowing or widening.
Notes[t] D01 - D07: TEXTILES OR FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
Notes[g] D04B 21/00 - D04B 27/00: Warp knitting; Machines therefor
D SECTION D — TEXTILES; PAPER.
D04 BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS.
D04B KNITTING.
D04B 23/00 Flat warp knitting machines.
D04B 23/18 · · with provision for narrowing or widening.