IPC 2013 : D05B 3/16 : shank buttons.

IPC2013 > D > D05 > D05B > D05B 3/00 > D05B 3/16[2] > shank buttons.
Notes[t] D01 - D07: TEXTILES OR FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
Notes[g] D05B 3/00 - D05B 23/00: Special-purpose or automatic sewing apparatus or machines
D SECTION D — TEXTILES; PAPER.
D05 SEWING; EMBROIDERING; TUFTING.
D05B SEWING (appliances for the tailoring trade A41H; sewing tables A47B 29/00; sewing in bookbinding B42B 2/00; sewing machines modified for knitting D04B 39/08).
D05B 3/00 Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing (programme-controlled sewing machines D05B 19/00; with devices for automatically controlling movement of work-carrier D05B 21/00).
D05B 3/16 · · shank buttons.