B21L1/00	7	Making chains or chain links by bending workpieces of rod, wire, or strip to form links of oval or other simple shape (B21L3/00, B21L7/00 take precedence)	B21L1/00	B21L1/00		180
B21L1/02	8	by bending the ends of the workpieces to abut	B21L1/02	B21L1/02		126
B21L1/04	8	by bending and interconnecting the ends of the workpieces with or without separate jointing members	B21L1/04	B21L1/04		24
B21L3/00	7	Making chains or chain links by bending the chain links or link parts and subsequently welding or soldering the abutting ends (B21L7/00 takes precedence)	B21L3/00	B21L3/00		225
B21L3/02	8	Machines or devices for welding chain links	B21L3/02	B21L3/02		442
B21L3/04	9	by making use of forge or pressure welding	B21L3/04	B21L3/04		15
B21L5/00	7	Making chains or chain links by working the starting material in such a way that integral, i.e. jointless, chains links are formed	B21L5/00	B21L5/00		83
B21L5/02	8	in such a way that interconnected links are formed	B21L5/02	B21L5/02		32
B21L7/00	7	Making chains or chain links by cutting single loops or loop-parts from coils, assembling the cut parts and subsequently subjecting same to twisting with or without welding	B21L7/00	B21L7/00		70
B21L9/00	7	Making chains or chain links, the links being composed of two or more different parts, e.g. drive chains (B21L1/04, B21L7/00, B21L11/14, B21L13/00 take precedence)	B21L9/00	B21L9/00		238
B21L9/02	8	of roller-chain or other plate-link type	B21L9/02	B21L9/02		91
B21L9/04	9	Punching or bending the different parts of the chain links	B21L9/04	B21L9/04		139
B21L9/06	9	Sorting, feeding, assembling, riveting, or finishing parts of chains	B21L9/06	B21L9/06		166
B21L9/065	10	{Assembling or disassembling}	B21L9/06	B21L9/06		379
B21L9/08	9	Combining the chain links with auxiliary parts, e.g. welding-on wear-resistant parts	B21L9/08	B21L9/08		35
B21L11/00	7	Making chains or chain links of special shape	B21L11/00	B21L11/00		74
B21L11/005	8	{Making ornamental chains (B21L11/02&#160;-&#160;B21L11/14 take precedence; ornamental chains A44C)}	B21L11/00	B21L11/00		646
B21L11/02	8	each link being formed of a single member of which both ends are bent or shaped to engage the middle portions of the next link	B21L11/02	B21L11/02		21
B21L11/04	9	the ends being pierced or punched to form eyes	B21L11/04	B21L11/04		5
B21L11/06	10	the workpiece being of thin strip metal	B21L11/06	B21L11/06		6
B21L11/08	9	the ends being interengaged with other parts of the same link	B21L11/08	B21L11/08		3
B21L11/10	8	the chain links having opposed correspondingly shaped cylindrical and hook-like parts of which one parts forms a hinge-like support for the adjacent link (B21L11/02 takes precedence)	B21L11/10	B21L11/10		14
B21L11/12	8	Forming bead chains	B21L11/12	B21L11/12		63
B21L11/14	8	Making chain links with inserted or integrally-formed studs	B21L11/14	B21L11/14		121
B21L13/00	7	Making terminal or intermediate chain links of special shape; Making couplings for chains, e.g. swivels, shackles	B21L13/00	B21L13/00		104
B21L15/00	7	Finishing or dressing chains or chain links, e.g. removing burr material, calibrating (B21L9/06 takes precedence)	B21L15/00	B21L15/00		377
B21L15/005	8	{Pre-stretching chains}	B21L15/00	B21L15/00		66
B21L15/02	8	Twisting already closed links	B21L15/02	B21L15/02		9
B21L19/00	7	Appurtenances for chain-making not restricted to any particular process	B21L19/00	B21L19/00		184
B21L21/00	7	Tools or implements for repairing chains using metal-working operations, e.g. for detaching deformed chain links	B21L21/00	B21L21/00		198
B21L99/00	7	Subject matter not provided for in other groups of this subclass	B21L99/00	B21L99/00		67
