DIFF Subgroup
B21C 1/30 Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive
Introduced: September 1968
Full Title
Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing > Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes > Carriages; Drives > Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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