B
SECTION B — PERFORMING OPERATIONS
  
SHAPING
 B21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (casting, powder metallurgy B22; shearing B23D; soldering, welding, flame-cutting B23K; miscellaneous metal-working 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. Combinations of operations covered by different sub-classes are dealt with in B23P. Combinations of operations covered by any particular sub-class with operations covered by other classes, e.g. with operations involving removal of material, are also dealt with in B23P, except that if the operations covered by the other classes are subsidiary to the operations properly covered in a single sub-class of B21 the combination is classified in that sub-class.
  2. Processes of a kind covered by this class but applied to non-metallic materials may be classified here if they are applicable to metal and cannot be classified fully in one other class.
 B21J
FORGING; HAMMERING; PRESSING; RIVETING; FORGE FURNACES (making particular products by forging or pressing B21K; plating or pressure finishing or surfaces B23P; 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 in 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. by 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 sub-groups
 B21J 9/00
Forging presses
 B21J 9/02
·  Special design or construction
 B21J 9/04
·  ·  Piercing presses
 B21J 9/06
·  ·  Sawing 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 sub-groups
 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
 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 sub-groups
 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