for power hammers

Full Title

Hammers; Forging machines with hammers or die jaws acting by impact (hand hammers B25D; electrical features in section H) > Drives for hammers; Transmission means therefor > for power hammers

Child Classifications

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• B21J 7/24 operated by steam, air, or other gaseous pressure
• B21J 7/28 operated by hydraulic or liquid pressure
• B21J 7/30 operated by electro-magnets
• B21J 7/32 operated by rotary drive, e.g. by electric motor
• B21J 7/34 operating both the hammer and the anvil, so-called counter-tup