B
SECTION B — PERFORMING OPERATIONS; TRANSPORTING
 B01 - 
B07
Subsection index
LIQUID/LIQUID, LIQUID/GAS OR GAS/GAS SEPARATION
Method
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/LIQUID OR SOLID/GAS SEPARATION
Method
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/SOLID SEPARATION
Method
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB07B
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
Apparatus
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB04B, B04C
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
  
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 are classified in this class if they are applicable to metal and cannot be classified fully in another class.
 B21K
MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS (making particular articles by working sheet metal without essentially removing material B21D; processing wire B21F; making pins, needles or nails B21G; making particular articles by rolling B21H; forging machines, pressing machines, hammering machines, in general B21J; making chains B21L; plating B23K)
 B21K

Note(s)

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.

 B21K
Subclass index
MAKING MACHINE ELEMENTS OR TOOLS 1/00, 3/00, 5/00, 19/00
MAKING RAILS 7/00, 9/00
MAKING LOCKSMITHS' OR BLACKSMITHS' GOODS 13/00, 15/00
MAKING OTHER ARTICLES 7/00, 11/00, 17/00, 21/00, 23/00
UNITING OF COMPONENTS 25/00
ACCESSORIES, AUXILIARY DEVICES 27/00, 29/00, 31/00
 B21K 1/00 - 
B21K 25/00
Making particular articles by forging, pressing, or hammering; Equipment therefor
P:30 B21K 1/00
Making machine elements
 B21K 1/06
·  axles or shafts
 B21K 1/28
·  wheels; discs
P:40 B21K 3/00
Making engine or like machine parts not covered by B21K 1/00; Making propellers or the like
P:50 B21K 5/00
Making tools or tool parts, e.g. pliers
P:60 B21K 7/00
Making railway appurtenances; Making vehicle parts
P:70 B21K 9/00
Reconditioning railroad accessories, e.g. rails
P:80 B21K 11/00
Making cutlery wares; Making garden tools or the like
P:90 B21K 13/00
Making locksmiths' goods, e.g. handles for cases
P:100 B21K 15/00
Making blacksmiths' goods
P:110 B21K 17/00
Making sport articles, e.g. skates
P:20 B21K 19/00
Making articles for agricultural machinery
P:120 B21K 21/00
Making hollow articles not covered by any single one of groups B21K 1/00-B21K 19/00 (essentially from sheet-metal or uniform thin-walled tubes B21D, e.g. B21D 41/00, B21D 51/00)
P:130 B21K 23/00
Making other articles
P:10 B21K 25/00
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 B23P 11/02, B23P 19/02)
 B21K 27/00 - 
B21K 31/00
Accessories; Auxiliary devices
P:150 B21K 27/00
Handling devices, e.g. for feeding, aligning, discharging; Cutting-off means; Arrangement thereof
P:140 B21K 29/00
Arrangements for heating or cooling during processing (for preparing metal stock to be forged or pressed B21J 1/00; heating equipment in general, see the appropriate subclasses, e.g. H05B)
P:0 B21K 31/00
Control devices specially adapted for positioning tool carriers