KNOCKOUT FOR FORGE MACHINE
United States Patent 3478566

Inventors:
Ferguson, Ellis H.
Publication Date:
11/18/1969
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Assignee:
WYMAN GORDON CO
Primary Class:
72/427
International Classes:
B21J13/14; B21K1/08; B21J13/00; B21K1/06; B21D45/00
US Patent References:
0756965
0837573
1474073Dies for forming ball retainers
2023042Open die header
2414549Crankshaft twisting machine
3299453Upsetting machine with controllable ejector means for the manufacture of screws, bolts, bolt blanks and the like




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