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 are classified in this class if they are applicable to metal and cannot be classified fully in another class.
 B21G
MAKING NEEDLES, PINS, OR NAILS
 B21G 1/00
Making needles used for performing operations (forming heads on pin-like needles B21G 3/12; making U-shaped hairpins B21G 7/04)
 B21G 1/00

Note(s)

Group B21G 1/12 takes precedence over groups B21G 1/02-B21G 1/10.

 B21G 1/02
·  of needles with eyes, e.g. sewing-needles, sewing-awls
 B21G 1/04
·  ·  of needles specially adapted for use in machines or tools
 B21G 1/06
·  of needles with hook or barb, e.g. crochet hooks
 B21G 1/08
·  of hollow needles or needles with hollow end, e.g. hypodermic needles, larding-needles (B21G 1/10 takes precedence)
 B21G 1/10
·  equipped with locking means for the material to be drawn through, e.g. for repairing tubeless tyres
 B21G 1/12
·  Securing, cleaning-off burrs, reconditioning, polishing, grinding
 B21G 3/00
Making pins, nails, or the like (of pins with individual caps B21G 5/00; of U-like shape B21G 7/00; of split-pins B21G 7/08)  [2]
 B21G 3/02
·  of pins of the kind used in the tailoring trade or the household
 B21G 3/04
·  ·  with locking or shielding device for the pin point, e.g. safety-pins
 B21G 3/06
·  of nails with shoulders
 B21G 3/08
·  of nails with head and two or more shanks or split shanks
 B21G 3/10
·  of undulated nails or pins
 B21G 3/12
·  Upsetting; Forming heads
 B21G 3/14
·  Reducing diameter of parts otherwise than by rolling
 B21G 3/16
·  Pointing, with or without cutting
 B21G 3/18
·  by operations not restricted to one of the groups B21G 3/12-B21G 3/16 (B21G 3/06-B21G 3/10 take precedence)
 B21G 3/20
·  ·  from wire of indefinite length (by rolling B21G 3/30)
 B21G 3/22
·  ·  ·  in pairs arranged head to head
 B21G 3/24
·  ·  ·  by simultaneously forming the head of one nail and the adjacent point of another
 B21G 3/26
·  ·  by cutting from strip or sheet material
 B21G 3/28
·  ·  by forging or pressing
 B21G 3/30
·  ·  by rolling
 B21G 3/32
·  Feeding material to be worked to nail or pin making machines
 B21G 5/00
Making pins or nails with attached caps or with coated heads
 B21G 5/02
·  of drawing-pins or pins of drawing-pin type
 B21G 7/00
Making pins of U-like shape or split-pins (of paper fasteners or staples B21D 53/46, B21F 45/16)
 B21G 7/02
·  of U-like shape
 B21G 7/04
·  ·  of hairpins
 B21G 7/06
·  ·  ·  of undulated hairpins
 B21G 7/08
·  of split-pins, e.g. cotter-pins