|  | 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...C25D 1/00)

|  | 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 are subsidiary to 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.

|  | B21G |
MAKING NEEDLES, PINS, OR NAILS

|  | B21G 1/00 |
Making needles used for performing operations (forming heads on pin-like needles Fulltext... Hierarchy... Expanded...B21G 3/12; making U-shaped hairpins Fulltext... Hierarchy... Expanded...B21G 7/04)

|  | 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 (Fulltext... Hierarchy... Expanded...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 (takes precedence over Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B21G 1/02-B21G 1/10)

|  | B21G 3/00 |
Making pins, nails, or the like (of pins with individual caps Fulltext... Hierarchy... Expanded...B21G 5/00; of U-like shape Fulltext... Hierarchy... Expanded...B21G 7/00; of split-pins Fulltext... Hierarchy... Expanded...B21G 7/08)

|  | 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 Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B21G 3/12-B21G 3/16 (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B21G 3/06-B21G 3/10 take precedence)

|  | B21G 3/20 |
· · | from wire of indefinite length (by rolling Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...B21D 53/46, Fulltext... Hierarchy... Expanded...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