B21F

WORKING OR PROCESSING OF METAL WIRE

reducing diameter by

rolling of metal B21B; by drawing, auxiliary operations used in connection with metal-working without essentially removing material B21C; bundling articles B65B13/00

In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.

B21F1/00

Wire working characterised by operations performed

B21F1/00

Bending wire other than coiling

Straightening wire

B21F1/002

by means of manually operated devices, e.g. pliers

B21F1/004

by means of press-type tooling

B21F1/006

in 3D with means to rotate the tools about the wire axis

B21F1/008

in 3D with means to rotate the wire about its axis

B21F1/02

Straightening

B21F1/023

in a device rotating about the wire axis

B21F1/026

Straightening and cutting

B21F1/04

Undulating

B21F1/06

Bending wire-eyes

B21F3/00

Coiling wire into particular forms

B21F3/02

helically

B21F3/027

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

B21F3/04

externally on a mandrel or the like

B21F3/06

internally on a hollow form

B21F3/08

to flat spiral

B21F3/10

to spirals other than flat, e.g. conical

B21F3/12

of interconnected helical springs

B21F5/00

Upsetting wire

or pressing operations affecting the wire cross-section

in the manufacture of nails or pins B21G3/12

B21F5/005

Upsetting wire

B21F7/00

Twisting wire

Twisting wire together for connections of limited size B21F15/04

B21F9/00

Straining wire straining prestressing wires for concrete E04G21/12; connections or attachments adapted for straining F16G11/00;

bundling machines or tools B65B13/00

B21F9/002

to maintain tension in the wire, e.g. to pull the wire taut

B21F9/005

to affect the material properties of the wire

B21F9/007

to induce a plastic deformation of the wire

B21F9/02

by tools adapted also for making connections

B21F11/00

Cutting wire hand cutting tools B26B

B21F11/005

springs

B21F13/00

Splitting wire

B21F15/00

Connecting wire to wire or other metallic material or objects

Connecting parts by means of wire tools for both straining and connecting B21F9/00; jacketing or reinforcing B21F17/00; manufacture of wire network B21F27/00; in making bands B21F43/00

; bundling machines or tools B65B13/00; for semiconductors H01L24/85

B21F15/02

wire with wire

B21F15/04

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

B21F15/06

with additional connecting elements or material

B21F27/08 takes precedence

B21F15/08

making use of soldering or welding

B21F27/10 takes precedence

B21F15/10

wire with sheet metal

B21F17/00

Jacketing or reinforcing articles with wire by winding B65H54/00, B65H81/00; by braiding D04C

B21F19/00

Metallic coating of wire by extruding B21C23/24; by soldering or welding, e.g. cladding or plating B23K; by other non-mechanical means C23; electroplating C25D

B21F23/00

Feeding wire in wire-working machines or apparatus applicable also to feeding rods or strips B21D43/00

B21F23/002

Feeding means specially adapted for handling various diameters of wire or rod

B21F23/005

Feeding discrete lengths of wire or rod

B21F23/007

using pick-up means, e.g. for isolating a predefined number of wires from a bundle

B21F25/00

Wire working characterised by the particular articles produced

B21F25/00

Making barbed wire

B21F27/00

Making wire network, i.e. wire nets meshed-ring network B21F31/00; in making bands B21F43/00; using looms D03D

B21F27/005

Wire network per se

B21F27/02

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

B21F27/04

Manufacturing on machines with rotating blades or formers

B21F27/06

Manufacturing on twister-gear machines

B21F27/08

with additional connecting elements or material at crossings

B21F27/10

with soldered or welded crossings

resistance spot welding machines for manufacturing of metallic grids or mats B23K11/008

B21F27/12

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

B21F27/121

of tubular form, e.g. as reinforcements for pipes or pillars

B21F27/122

by attaching a continuous stirrup to longitudinal wires

B21F27/124

applied by rotation

B21F27/125

by attaching individual stirrups to longitudinal wires

B21F27/127

by bending preformed mesh

B21F27/128

of three-dimensional form by connecting wire networks, e.g. by projecting wires through an insulating layer

B21F27/14

Specially bending or deforming free wire ends

B21F27/16

for spring mattresses

B21F27/18

of meshed work for filters or sieves

B21F27/20

of plaster-carrying network

B21F27/22

of network for wire-reinforced glass or the like

B21F29/00

Making fencing or like material made partly of wire B21F25/00, B21F27/00 take precedence

B21F29/02

comprising bars or the like connected by wires

B21F31/00

Making meshed-ring network from wire

B21F33/00

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

B21F33/002

Coiling or packing wire network

B21F33/005

Cutting wire network

B21F33/007

Connecting wire network

B21F33/02

Mounting of wire network on frames

B21F33/025

Mounting of mattress innersprings on borderframes

B21F33/04

Connecting ends of helical springs for mattresses

B21F35/00

Making springs from wire by coiling wire B21F3/00; making resilient rings B21F37/02

B21F35/003

Multi-filament springs, e.g. made of stranded, braided, cable or multi-filament material

B21F35/006

Double twist coil springs

B21F35/02

Bending or deforming ends of coil springs to special shape

B21F35/04

Making flat springs, e.g. sinus springs

B21F37/00

Manufacture of rings from wire in chain making B21L; making of tyre beads B29D30/48

B21F37/02

of resilient rings, e.g. key-rings

B21F37/04

of washers B21F37/02 takes precedence

B21F39/00

Making wheel spokes from wire

B21F41/00

Making umbrella frames or members from wire

B21F43/00

Making bands, e.g. bracelets, or wire making chains B21L; using looms D03D

B21F45/00

Wire-working in the manufacture of other particular articles of pins, needles, nails, hairpins B21G; of chains B21L

; for semiconductor devices H01L24/42

B21F45/002

of frames for spectacles

B21F45/004

Mounting bails on containers

B21F45/006

of concrete reinforcement fibres

B21F45/008

of medical instruments, e.g. stents, corneal rings medical science A61

B21F45/02

of clothes hangers

B21F45/04

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

B21F45/06

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

B21F45/08

of loom heddles

B21F45/10

of cards for fabric-napping machines

B21F45/12

of fishing hooks

B21F45/14

of end-pieces for laces or ropes

B21F45/16

of devices for fastening or securing purposes

B21F45/18

of slide fastener elements

B21F45/20

of springs hooks

of spring safety hooks

B21F45/22

of paper fasteners or clips staples B21F45/24

B21F45/24

of staples

of belt-fastening elements

B21F45/26

of buttons

B21F45/28

of "patent-fastener" or press-button type

B21F99/00

Subject matter not provided for in other groups of this subclass