on an external or internal cylindrical or conical surface, e.g. on recesses (B23G1/16, B23G1/22, B23G1/32, B23G1/36 take precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: on an external or internal cylindrical or conical surface, e.g. on recesses

CPC: on an external or internal cylindrical or conical surface, e.g. on recesses (B23G1/16, B23G1/22, B23G1/32, B23G1/36 take precedence)

Full Title

Full titles differ between systems:

IPC:

Thread cutting; Automatic machines specially designed therefor > on an external or internal cylindrical or conical surface, e.g. on recesses

CPC:

Thread cutting; Automatic machines specially designed therefor > on an external or internal cylindrical or conical surface, e.g. on recesses (B23G1/16, B23G1/22, B23G1/32, B23G1/36 take precedence)

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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B23G 1/04 Machines with one working-spindle IPC+CPC Available in IPC and CPC
B23G 1/08 Machines with a plurality of working spindles IPC+CPC Available in IPC and CPC
B23G 1/12 Machines with a toothed cutter in the shape of a spur-gear or the like which is rotated to generate the thread profile as the work rotates IPC+CPC Available in IPC and CPC