IPC 6 English version B21K !A-B21K 31/00

B21K-B21K03100

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 K

MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS (making particular articles by working sheet metal without essentially removing material B 21 D; processing wire B 21 F; making pins, needles or nails B 21 G; making particular articles by rolling B 21 H; forging machines, pressing machines, hammering machines, in general B 21 J; making chains B 21 L; plating B 23 K)

Note

This subclass covers only forging, pressing, or hammering operations which are specially adapted for use in the manufacture of particular objects and which are not essentially combined with any different metal-working operation unless the latter is a subsidiary operation performed in the same machine.

Making particular articles by forging, pressing, or hammering; Equipment therefor

Making machine elements

balls, rolls, or rollers, e.g. for bearings

ball-races

cages for bearings [2]

axles or shafts

crankshafts

of cylindrical form

of specially-shaped cross-section

fittings

parts of pipe or hose couplings

pistons or plungers

valve parts

poppet valves, e.g. for internal-combustion engines

valve bodies; valve seats

housings or supporting parts, e.g. axle housings, engine mountings

wheels; discs

with gear-teeth

discs, e.g. disc wheels

wheels with spokes

with blades

rims; tyres

hubs

pulleys, e.g. cable pulleys

bolts, studs, or the like (making screw-thread B 21 K 1/56; making U-bolts B 21 K 1/74)

with heads

Machines working with hammers, e.g. beating in a radial direction, for forming heads

Trimming or shearing formed heads, e.g. working with dies

double-ended, e.g. with heads on both ends (forming heads B 21 K 1/46)

with grooves or notches

screw-threaded elements [2]

rivets

hollow or semi-hollow rivets

special rivets, e.g. with electrical contacts

nuts (making screw-thread B 21 K 1/56)

from strip bars

from round or profiled bars

of special shape, e.g. self-locking nuts, wing nuts

hooks, e.g. crane hooks, railway track spikes (making nails in general B 21 G)

forked members or members with two or more limbs, e.g. U-bolts, anchors

elements not mentioned in one of the preceding groups

Making engine or like machine parts not covered by subgroups of B 21 K 1/00; Making propellers or the like

cylinder heads

blades, e.g. for turbines; Upsetting of blade roots

Making tools or tool parts, e.g. pliers

drilling-tools or other tools for making or working on holes

twisting-tools, e.g. drills, reamers

Dressing, e.g. sharpening rock drills

drifting tools

Forming drill-bit shanks

other cutting tools (cutlery wares B 21 K 11/00)

hand hammers

tools for turning nuts

handles or parts therefor

Making working faces of dies, either recessed or outstanding

Making railway appurtenances; Making vehicle parts

parts for permanent way (spikes B 21 K 1/72)

switch tongues

sleepers

base plates for rails, e.g. chairs

rail joints

parts for locomotives or vehicles, e.g. frames, underframes

brake rigging or brake parts [2]

Reconditioning railroad accessories, e.g. rails

11/

Making cutlery wares; Making garden tools or the like

11/

knives

11/

spoons; table forks

11/

scissors

11/

sickles; scythes

11/

axes; picks

11/

spades; shovels

11/

rakes; garden forks

13/

Making locksmiths' goods, e.g. handles for cases

13/

hinges

15/

Making blacksmiths' goods

15/

horse-shoes; accessories therefor

15/

caulks

15/

metal attachments for footwear, e.g. wear-resisting plates

17/

Making sport articles, e.g. skates

19/

Making articles for agricultural machinery

19/

plough blades; ploughshares

21/

Making hollow articles not covered by a single preceding subgroup (essentially from sheet-metal or uniform thin-walled tubes B 21 D, e.g. B 21 D 41/00, B 21 D 51/00)

21/

Producing blanks in the shape of discs or cups as semi-finished articles for making hollow articles, e.g. to be deep-drawn or extruded

21/

Shaping thin-walled hollow articles, e.g. cartridges

21/

Shaping thick-walled hollow articles, e.g. projectiles

21/

Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs

21/

cone-shaped or bell-shaped articles, e.g. insulator caps

21/

Shaping end portions of hollow articles

21/

closed or substantially-closed ends, e.g. cartridge bottoms

21/

Remodelling hollow bodies with respect to the shape of the cross-section (remodelling end portions only B 21 K 21/12)

23/

Making other articles

23/

members of endless tracks, e.g. track guides, shoes (making from sheet-metal B 21 D)

23/

flanged articles (B 21 K 1/28 takes precedence; flanging tubes B 21 D)

25/

Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components (uniting by interference- or press-fitting B 23 P 11/02, B 23 P 19/02)

Accessories; Auxiliary devices

27/

Handling devices, e.g. for feeding, aligning, discharging; Cutting-off means; Arrangement thereof

27/

Feeding devices for rods, wire, or strips

27/

allowing successive working steps

27/

Cutting-off means; Arrangement thereof

29/

Arrangements for heating or cooling during processing (for preparing metal stock to be forged or pressed B 21 J 1/06; heating equipment in general, see the appropriate subclasses, e.g. H 05 B)

31/

Control devices specially adapted for positioning tool carriers