US Patent: 1,936,274
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| Die
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Patentee:
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| George E. Shafer (exact or similar names) - Erie, Erie County, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 18, 1930 |
| Granted: |
Nov. 21, 1933 |
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Joel Havens
"Vintage Machinery" entry for Rickert-Shafer Co.
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Description: |
| Claim:
In a die, the combination of a head: chasers in the head; a cam ring acting on the chasers; a catch locking the cam ring in set position comprising a floating split ring; a shoulder carried with the head against which the split ring seats; an actuator opening the ring to release the 'die; a second catch stopping the cam ring at released position; and a second shoulder engaged by the split ring when the second catch is released, the cam ring with the split ring in the last-mentioned position permitting the removal of the chasers |
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