IPC 6 English version B21F-B21F 45/28

B21F-B21F04528

SECTION B– PERFORMING OPERATIONS; TRANSPORTING

B 21

MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (casting, powder metallurgy B 22; shearing B 23 D; working of metal by the action of a high concentration of electric current B 23 H; soldering, welding, flame-cutting B 23 K; other working of metal B 23 P; punching sheet material in general B 26 F; processes for changing of physical properties of metals C 21 D, C 22 F; electroforming C 25 D 1/00)

B 21 F

WORKING OR PROCESSING OF WIRE (rolling of metal B 21 B; by drawing, auxiliary operations used in connection with metal-working without essentially removing material B 21 C; bundling articles B 65 B 13/00)

Wire working characterised by operations performed

Bending wire other than coiling; Straightening wire

Straightening

Undulating

Bending wire-eyes

Coiling wire into particular forms

helically

027

with extended ends formed in a special shape, e.g. for clothes-pegs

externally on a mandrel or the like

internally on a hollow form

to flat spiral

to spirals other than flat, e.g. conical

of interconnected helical springs

Upsetting wire (in the manufacture of nails or pins B 21 G 3/12)

Twisting wire; Twisting wire together (for connections of limited size B 21 F 15/04)

Straining wire (straining prestressing wires for concrete E 04 G 21/12; connections or attachments adapted for straining F 16 G 11/00)

by tools adapted also for making connections

11/

Cutting wire (hand cutting tools B 26 B)

13/

Splitting wire

15/

Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire (tools for both straining and connecting B 21 F 9/00; jacketing or reinforcing B 21 F 17/00; manufacture of wire network B 21 F 27/00; in making bands B 21 F 43/00)

15/

wire with wire

15/

without additional connecting elements or material, e.g. by twisting

15/

with additional connecting elements or material

15/

making use of soldering or welding

15/

wire with sheet metal

17/

Jacketing or reinforcing articles with wire (by winding B 65 H 54/00, B 65 H 81/00; by braiding D 04 C)

19/

Metallic coating of wire (by extruding B 21 C 23/24; by soldering or welding, e.g. cladding or plating, B 23 K; by other non-mechanical means C 23; electroplating C 25 D)

21/

Working or processing wire not otherwise provided for

23/

Feeding wire in wire-working machines or apparatus (applicable also to feeding rods or strips B 21 D 43/00)

Wire working characterised by the particular articles produced

25/

Making barbed wire

27/

Making wire network, i.e. wire nets (meshed-ring network B 21 F 31/00; in making bands B 21 F 43/00; using looms D 03 D)

27/

without additional connecting elements or material at crossings, e.g. connected by knitting

27/

Manufacturing on machines with rotating blades or formers

27/

Manufacturing on twister-gear machines

27/

with additional connecting elements or material at crossings

27/

with soldered or welded crossings

27/

Making special types or portions of network by methods or means specially adapted therefor

27/

Specially bending or deforming free wire ends

27/

for spring mattresses

27/

of meshed work for filters or sieves

27/

of plaster-carrying network

27/

of network for wire-reinforced glass or the like

29/

Making fencing or like material made partly of wire (B 21 F 25/00, B 21 F 27/00 take precedence) [2]

29/

comprising bars or the like connected by wires

31/

Making meshed-ring network from wire

33/

Tools or devices specially designed for handling or processing wire fabrics or the like

33/

Mounting of wire network on frames

33/

Connecting ends of helical springs for mattresses

35/

Making springs from wire (by coiling wire B 21 F 3/00; making resilient rings B 21 F 37/02)

35/

Bending or deforming ends of coil springs to special shape

35/

Making flat springs, e.g. sinus springs

37/

Manufacture of rings from wire (in chain making B 21 L; producing bead-rings or bead-cores for tyres B 29 D 30/48)

37/

or resilient rings, e.g. key-rings

37/

of washers (B 21 F 37/02 takes precedence)

39/

Making wheel spokes from wire

41/

Making umbrella frames or members from wire

43/

Making bands, e.g. bracelets, or wire (making chains B 21 L; using looms D 03 D)

45/

Wire-working in the manufacture of other particular articles (of pins, needles, nails, hairpins B 21 G; of chains B 21 L)

45/

of clothes hangers

45/

of elements, e.g. levers or links, for bottle stoppers

45/

of flexible shafts or hollow conduits, e.g. for Bowden mechanisms

45/

of loom heddles

45/

of cards for fabric-napping machines

45/

of fishing hooks

45/

of end-pieces for laces or ropes

45/

of devices for fastening or securing purposes

45/

of slide fastener elements

45/

of spring hooks; of spring safety hooks

45/

of paper fasteners or clips (staples B 21 F 45/24)

45/

of staples; of belt-fastening elements

45/

of buttons

45/

of "patent-fastener" or press-button type