|  | B |
SECTION B — PERFORMING OPERATIONS

SHAPING

|  | B21 |
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (casting, powder metallurgy Fulltext... Hierarchy... Expanded...B22; shearing Fulltext... Hierarchy... Expanded...B23D; soldering, welding, flame-cutting Fulltext... Hierarchy... Expanded...B23K; miscellaneous metal-working Fulltext... Hierarchy... Expanded...B23P; punching sheet material in general Fulltext... Hierarchy... Expanded...B26F; processes for changing of physical properties of metals Fulltext... Hierarchy... Expanded...C21D, Fulltext... Hierarchy... Expanded...C22F; electroforming Fulltext... Hierarchy... Expanded...C23B 7/00)

|  | B21 |
Note(s) Combinations of operations covered by different sub-classes are dealt with in Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...B23P, except that if the operations covered by the other classes both are subsidiary to and performed in connection with the operations properly covered in a single sub-class of Fulltext... Hierarchy... Expanded...B21 the combination is classified in that sub-class. 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 Fulltext... Hierarchy... Expanded...B21K; plating or pressure finishing or surfaces Fulltext... Hierarchy... Expanded...B23P 3/00; general features of presses, presses for consolidating scrap Fulltext... Hierarchy... Expanded...B30B; furnaces in general Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...C21D 7/00, Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...F16N)

|  | B21J 5/00 |
Methods for forging, hammering, or pressing (for working sheet metal or metal tubes, rods, or profiles Fulltext... Hierarchy... Expanded...B21D; for working wire Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...B21C 23/00)

|  | B21J 5/12 |
· · | Forming profiles on internal or external surfaces (making screw-thread by forging, pressing, or hammering Fulltext... Hierarchy... Expanded...B21K)

|  | B21J 7/00 |
Hammers; Forging machines with hammers or die jaws acting by impact (hand hammers Fulltext... Hierarchy... Expanded...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 uniquely 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 Fulltext... Hierarchy... Expanded...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; mountings

|  | 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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...H05B)

|  | B21J 15/12 |
· · | with tools or tool parts having a movement additional to the feed movement, e.g. spinning

|  | B21J 15/14 |
· · | uniquely 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

|  | 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 items, e.g. supports; Suspension equipment uniquely 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 Fulltext... Hierarchy... Expanded...C21D 9/00; furnaces in general Fulltext... Hierarchy... Expanded...F27)

|  | B21J 17/02 |
· | electrically heated (electric heating elements Fulltext... Hierarchy... Expanded...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