B
SECTION B — PERFORMING OPERATIONS; TRANSPORTING
  
SHAPING
 B21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (casting, powder metallurgy B22; shearing B23D; working of metal by the action of a high concentration of electric current B23H; soldering, welding, flame-cutting B23K; other working of metal B23P; punching sheet material in general B26F; processes for changing of physical properties of metals C21D, C22F; electroforming C25D 1/00)
 B21

Note(s)

  1. This class does not cover:
  2. Processes of a kind covered by this class but applied to non-metallic materials are classified in this class if they are applicable to metal and cannot be classified fully in another class.
 B21F
WORKING OR PROCESSING OF WIRE (rolling of metal B21B; by drawing, auxiliary operations used in connection with metal-working without essentially removing material B21C; bundling articles B65B 13/00)
 B21F
Subclass index
WIRE WORKING CHARACTERISED BY OPERATIONS PERFORMED
Bending, straightening; coiling; twisting 1/00; 3/00; 7/00
Upsetting, straining 5/00, 9/00
Cutting, splitting, connecting 11/00, 13/00, 15/00
Articles jacketed or reinforced with wire 17/00
Coating of wire 19/00
Other treatments 21/00
Feeding wire into apparatus 23/00
WIRE WORKING CHARACTERISED BY THE PARTICULAR ARTICLES PRODUCED
Barbed wire;network, fencing, wire fabrics 25/00; 27/00 - 33/00
Springs, rings 35/00, 37/00
other articles 39/00 - 45/00
 B21F 1/00 - 
B21F 23/00
Wire working characterised by operations performed
 B21F 1/00
Bending wire other than coiling; Straightening wire
 B21F 1/02
·  Straightening
 B21F 1/04
·  Undulating
 B21F 1/06
·  Bending wire-eyes
 B21F 3/00
Coiling wire into particular forms
 B21F 3/02
·  helically
 B21F 3/027
·  ·  with extended ends formed in a special shape, e.g. for clothes-pegs
 B21F 3/04
·  ·  externally on a mandrel or the like
 B21F 3/06
·  ·  internally on a hollow form
 B21F 3/08
·  to flat spiral
 B21F 3/10
·  to spirals other than flat, e.g. conical
 B21F 3/12
·  of interconnected helical springs
 B21F 5/00
Upsetting wire (in the manufacture of nails or pins B21G 3/12)
 B21F 7/00
Twisting wire; Twisting wire together (for connections of limited size B21F 15/04)
 B21F 9/00
Straining wire (straining prestressing wires for concrete E04G 21/12; connections or attachments adapted for straining F16G 11/00)
 B21F 9/02
·  by tools adapted also for making connections
 B21F 11/00
Cutting wire (hand cutting tools B26B)
 B21F 13/00
Splitting wire
 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 B21F 9/00; jacketing or reinforcing B21F 17/00; manufacture of wire network B21F 27/00; in making bands B21F 43/00)
 B21F 15/02
·  wire with wire
 B21F 15/04
·  ·  without additional connecting elements or material, e.g. by twisting
 B21F 15/06
·  ·  with additional connecting elements or material
 B21F 15/08
·  ·  ·  making use of soldering or welding
 B21F 15/10
·  wire with sheet metal
 B21F 17/00
Jacketing or reinforcing articles with wire (by winding B65H 54/00, B65H 81/00; by braiding D04C)
 B21F 19/00
Metallic coating of wire (by extruding B21C 23/24; by soldering or welding, e.g. cladding or plating, B23K; by other non-mechanical means C23; electroplating C25D)
 B21F 21/00
Working or processing wire not otherwise provided for
 B21F 23/00
Feeding wire in wire-working machines or apparatus (applicable also to feeding rods or strips B21D 43/00)
 B21F 25/00 - 
B21F 45/00
Wire working characterised by the particular articles produced
 B21F 25/00
Making barbed wire
 B21F 27/00
Making wire network, i.e. wire nets (meshed-ring network B21F 31/00; in making bands B21F 43/00; using looms D03D)
 B21F 27/02
·  without additional connecting elements or material at crossings, e.g. connected by knitting
 B21F 27/04
·  ·  Manufacturing on machines with rotating blades or formers
 B21F 27/06
·  ·  Manufacturing on twister-gear machines
 B21F 27/08
·  with additional connecting elements or material at crossings
 B21F 27/10
·  ·  with soldered or welded crossings
 B21F 27/12
·  Making special types or portions of network by methods or means specially adapted therefor
 B21F 27/14
·  ·  Specially bending or deforming free wire ends
 B21F 27/16
·  ·  for spring mattresses
 B21F 27/18
·  ·  of meshed work for filters or sieves
 B21F 27/20
·  ·  of plaster-carrying network
 B21F 27/22
·  ·  of network for wire-reinforced glass or the like
 B21F 29/00
Making fencing or like material made partly of wire (B21F 25/00, B21F 27/00 take precedence)  [2]
 B21F 29/02
·  comprising bars or the like connected by wires
 B21F 31/00
Making meshed-ring network from wire
 B21F 33/00
Tools or devices specially designed for handling or processing wire fabrics or the like
 B21F 33/02
·  Mounting of wire network on frames
 B21F 33/04
·  Connecting ends of helical springs for mattresses
 B21F 35/00
Making springs from wire (by coiling wire B21F 3/00; making resilient rings B21F 37/02)
 B21F 35/02
·  Bending or deforming ends of coil springs to special shape
 B21F 35/04
·  Making flat springs, e.g. sinus springs
 B21F 37/00
Manufacture of rings from wire (in chain making B21L; producing bead-rings or bead-cores for tyres B29D 30/48)
 B21F 37/02
·  or resilient rings, e.g. key-rings
 B21F 37/04
·  of washers (B21F 37/02 takes precedence)
 B21F 39/00
Making wheel spokes from wire
 B21F 41/00
Making umbrella frames or members from wire
 B21F 43/00
Making bands, e.g. bracelets, or wire (making chains B21L; using looms D03D)
 B21F 45/00
Wire-working in the manufacture of other particular articles (of pins, needles, nails, hairpins B21G; of chains B21L)
 B21F 45/02
·  of clothes hangers
 B21F 45/04
·  of elements, e.g. levers or links, for bottle stoppers
 B21F 45/06
·  of flexible shafts or hollow conduits, e.g. for Bowden mechanisms
 B21F 45/08
·  of loom heddles
 B21F 45/10
·  of cards for fabric-napping machines
 B21F 45/12
·  of fishing hooks
 B21F 45/14
·  of end-pieces for laces or ropes
 B21F 45/16
·  of devices for fastening or securing purposes
 B21F 45/18
·  ·  of slide fastener elements
 B21F 45/20
·  ·  of spring hooks; of spring safety hooks
 B21F 45/22
·  ·  of paper fasteners or clips (staples B21F 45/24)
 B21F 45/24
·  ·  of staples; of belt-fastening elements
 B21F 45/26
·  ·  of buttons
 B21F 45/28
·  ·  ·  of "patent-fastener" or press-button type