KNOCKOUT FOR FORGE MACHINE
United States Patent 3478566
Inventors:
Ferguson, Ellis H.
Publication Date:
11/18/1969
Assignee:
WYMAN GORDON CO
International Classes:
B21J13/14; B21K1/08; B21J13/00; B21K1/06; B21D45/00
US Patent References:
| 0756965 | | | | |
| 0837573 | | | | |
| 1474073 | Dies for forming ball retainers | | | |
| 2023042 | Open die header | | | |
| 2414549 | Crankshaft twisting machine | | | |
| 3299453 | Upsetting machine with controllable ejector means for the manufacture of screws, bolts, bolt blanks and the like | | | |