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 may be classified in this class if they are applicable to metal and cannot be classified fully in one other class.
 B21J
FORGING; HAMMERING; PRESSING; RIVETING; FORGE FURNACES (rolling of metal B21B; making particular products by forging or pressing B21K; cladding or plating B23K; finishing surfaces by hammering B23P 9/04; compacting surfaces by blasting with particulate material B24C 1/10; general features of presses, presses for consolidating scrap B30B; furnaces in general F27)
 B21J 1/00
Preparing metal stock
 B21J 1/02
·  Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough (modifying the physical properties by deformation C21D 7/00, C22F 1/00)
 B21J 1/04
·  Shaping in the rough solely by forging or pressing
 B21J 1/06
·  Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
 B21J 3/00
Lubricating during forging or pressing (lubricating in general F16N)
 B21J 5/00
Methods for forging, hammering, or pressing (for working sheet metal or metal tubes, rods, or profiles B21D; for working wire B21F); Special equipment or accessories therefor
 B21J 5/02
·  Die forging; Trimming by making use of special dies
 B21J 5/04
·  by directly applied fluid pressure or explosive action
 B21J 5/06
·  for performing particular operations
 B21J 5/08
·  ·  Upsetting
 B21J 5/10
·  ·  Piercing billets (in combination with extrusion B21C 23/00)
 B21J 5/12
·  ·  Forming profiles on internal or external surfaces (making screw-thread by forging, pressing, or hammering B21K)
 B21J 7/00
Hammers; Forging machines with hammers or die jaws acting by impact (hand hammers B25D; electrical features Section H)
 B21J 7/02
·  Special design or construction
 B21J 7/04
·  ·  Power hammers
 B21J 7/06
·  ·  Drop hammers
 B21J 7/08
·  ·  ·  with rigidly-guided hammer
 B21J 7/10
·  ·  with both drive and hammer connected to a fulcrumed lever, e.g. tail hammers
 B21J 7/12
·  ·  ·  the lever being a spring, i.e. spring hammers
 B21J 7/14
·  ·  Forging machines working with several hammers
 B21J 7/16
·  ·  ·  in rotary arrangements
 B21J 7/18
·  ·  Forging machines working with die jaws, e.g. pivoted, movable laterally of the forging or pressing direction, e.g. for swaging
 B21J 7/20
·  Drives for hammers; Transmission means therefor
 B21J 7/22
·  ·  for power hammers
 B21J 7/24
·  ·  ·  operated by steam, air, or other gaseous pressure
 B21J 7/26
·  ·  ·  ·  operated by internal combustion
 B21J 7/28
·  ·  ·  operated by hydraulic or liquid pressure
 B21J 7/30
·  ·  ·  operated by electro-magnets
 B21J 7/32
·  ·  ·  operated by rotary drive, e.g. electric motor
 B21J 7/34
·  ·  ·  operating both the hammer and the anvil, so-called counter-tup
 B21J 7/36
·  ·  for drop hammers
 B21J 7/38
·  ·  ·  driven by steam, air, or other gaseous pressure
 B21J 7/40
·  ·  ·  driven by hydraulic or liquid pressure
 B21J 7/42
·  ·  ·  operated by rotary drive, e.g. electric motors
 B21J 7/44
·  ·  ·  ·  equipped with belts, ropes, cables, chains
 B21J 7/46
·  ·  Control devices specially adapted to forging hammers, not restricted to one of the preceding subgroups
 B21J 9/00
Forging presses
 B21J 9/02
·  Special design or construction
 B21J 9/04
·  ·  Piercing presses
 B21J 9/06
·  ·  Swawing presses; Upsetting presses
 B21J 9/08
·  ·  ·  equipped with devices for heating the workpiece (electric heating elements H05B)
 B21J 9/10
·  Drives for forging presses
 B21J 9/12
·  ·  operated by hydraulic or liquid pressure
 B21J 9/14
·  ·  ·  in conjunction with electric power
 B21J 9/16
·  ·  ·  in conjunction with steam or gas power
 B21J 9/18
·  ·  operated by making use of gearing mechanisms, e.g. levers, spindles, crankshafts, eccentrics, toggle-levers, rack bars
 B21J 9/20
·  ·  Control devices specially adapted to forging presses not restricted to one of the preceding subgroups
 B21J 11/00
Forging hammers combined with forging presses; Forging machines with provision for hammering and pressing
 B21J 13/00
Details of machines for forging, pressing, or hammering
 B21J 13/02
·  Dies or mountings therefor  [2]
 B21J 13/03
·  ·  Die mountings  [2]
 B21J 13/04
·  Frames; Guides
 B21J 13/06
·  Hammer tups; Anvils; Anvil blocks
 B21J 13/08
·  Accessories for handling work or tools
 B21J 13/10
·  ·  Manipulators (in general B25J)
 B21J 13/12
·  ·  ·  Turning means
 B21J 13/14
·  ·  Ejecting devices
 B21J 15/00
Riveting
 B21J 15/02
·  Riveting procedures
 B21J 15/04
·  ·  Riveting hollow rivets mechanically
 B21J 15/06
·  ·  Riveting hollow rivets by means of hydraulic, liquid, or gas pressure
 B21J 15/08
·  ·  Riveting by applying heat to the end parts of the rivets to enable heads to be formed
 B21J 15/10
·  Riveting machines (electric heating elements H05B)
 B21J 15/12
·  ·  with tools or tool parts having a movement additional to the feed movement, e.g. spin
 B21J 15/14
·  ·  specially adapted for riveting specific articles, e.g. brake lining machines
 B21J 15/16
·  ·  Drives for riveting machines; Transmission means therefor
 B21J 15/18
·  ·  ·  operated by air pressure or other gas pressure, e.g. explosion pressure
 B21J 15/20
·  ·  ·  operated by hydraulic or liquid pressure
 B21J 15/22
·  ·  ·  operated by both hydraulic or liquid pressure and gas pressure
 B21J 15/24
·  ·  ·  operated by electro-magnets
 B21J 15/26
·  ·  ·  operated by rotary drive, e.g. by electric motor
 B21J 15/28
·  ·  Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups
 B21J 15/30
·  ·  Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
 B21J 15/32
·  ·  ·  Devices for inserting or holding rivets in position with or without feeding arrangements
 B21J 15/34
·  ·  ·  ·  for installing tubular rivets
 B21J 15/36
·  ·  Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
 B21J 15/38
·  Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
 B21J 15/40
·  ·  for forming rivet heads
 B21J 15/42
·  ·  Special clamping devices for workpieces to be riveted together, e.g. operating through the rivet holes
 B21J 15/44
·  ·  Rivet hole positioners
 B21J 15/46
·  ·  Positioners for rivets for making tube joints
 B21J 15/48
·  ·  Devices for caulking rivets
 B21J 15/50
·  ·  Removing or cutting devices for rivets
 B21J 17/00
Forge furnaces (furnaces for heat treatment C21D 9/00; furnaces in general F27)
 B21J 17/02
·  electrically heated (electric heating elements H05B)
 B21J 19/00
Blacksmiths' requisites not otherwise provided for
 B21J 19/02
·  Hearths; Air supply arrangements specially adapted therefor
 B21J 19/04
·  Anvils; Associated items