WORKING OR PROCESSING OF METAL WIRE (rolling of metal wire B21B1/16; by drawing, auxiliary operations used in connection with metal-working without essentially removing material B21C)

Introduced: September 1968

Description

B21F covers mechanical operations performed on metal wire without material removal, including drawing, twisting, coiling, straightening, and bundling processes. This subclass encompasses machinery and methods for transforming wire stock into finished or semi-finished products for applications such as fasteners, springs, cables, and reinforcement materials. Operations typically involve plastic deformation, bending, or assembly of wire components rather than cutting or grinding. Related wire coating, insulation, and electroplating processes are excluded, falling instead under classes B05, B29, or C23.

Title

Titles differ between systems:

IPC: WORKING OR PROCESSING OF METAL WIRE

CPC: WORKING OR PROCESSING OF METAL WIRE (rolling of metal wire B21B1/16; by drawing, auxiliary operations used in connection with metal-working without essentially removing material B21C)

Full Title

Full titles differ between systems:

IPC:

WORKING OR PROCESSING OF METAL WIRE

CPC:

WORKING OR PROCESSING OF METAL WIRE (rolling of metal wire B21B1/16; by drawing, auxiliary operations used in connection with metal-working without essentially removing material B21C)

IPC and CPC are identically structured here. All 23 subcodes exist in both systems.

6 shared codes have differing titles between IPC and CPC.

Child Classifications

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B21F 1/00 Bending wire other than coiling; Straightening wire +4 CPC IPC+CPC Available in IPC and CPC
B21F 11/00 Cutting wire +1 CPC IPC+CPC Available in IPC and CPC
B21F 13/00 Splitting wire IPC+CPC Available in IPC and CPC
B21F 15/00 Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire (tools for both straining and connecting B21F9/02; jacketing or reinforcing B21F17/00; manufacture of wire network B21F27/00; in making bands B21F43/00) IPC+CPC Available in IPC and CPC
B21F 17/00 Jacketing or reinforcing articles with wire IPC+CPC Available in IPC and CPC
B21F 19/00 Metallic coating of wire (by extruding B21C23/24; by soldering or welding, e.g. cladding or plating, B23K) IPC+CPC Available in IPC and CPC
B21F 23/00 Feeding wire in wire-working machines or apparatus +2 CPC IPC+CPC Available in IPC and CPC
B21F 25/00 Making barbed wire IPC+CPC Available in IPC and CPC
B21F 27/00 Making wire network, i.e. wire nets (making meshed-ring network from wire B21F31/00; in making bands B21F43/00) +1 CPC IPC+CPC Available in IPC and CPC
B21F 29/00 Making fencing or like material made partly of wire (B21F25/00 takes precedence) IPC+CPC Available in IPC and CPC
B21F 3/00 Coiling wire into particular forms IPC+CPC Available in IPC and CPC
B21F 31/00 Making meshed-ring network from wire IPC+CPC Available in IPC and CPC
B21F 33/00 Tools or devices specially designed for handling or processing wire fabrics or the like +3 CPC IPC+CPC Available in IPC and CPC
B21F 35/00 Making springs from wire +2 CPC IPC+CPC Available in IPC and CPC
B21F 37/00 Manufacture of rings from wire IPC+CPC Available in IPC and CPC
B21F 39/00 Making wheel spokes from wire IPC+CPC Available in IPC and CPC
B21F 41/00 Making umbrella frames or members from wire IPC+CPC Available in IPC and CPC
B21F 43/00 Making bands, e.g. bracelets, from wire IPC+CPC Available in IPC and CPC
B21F 45/00 Wire-working in the manufacture of other particular articles (of pins, needles, nails, hairpins B21G; of chains B21L) +4 CPC IPC+CPC Available in IPC and CPC
B21F 5/00 Upsetting wire +1 CPC IPC+CPC Available in IPC and CPC