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 |
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Patent Dates:
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| Applied: |
Aug. 18, 1930 |
| Granted: |
Nov. 21, 1933 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Rickert-Shafer Co.
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Description: |
| Abstract:
This invention is directed to that type of die which ordinarily automatically opens, or releases the chasers at a pre-determined point in the operation. Such dies commonly have a set position and with the present structure an improved form of lock is provided for locking the die in its set position. In connection with this improved look there is also provided a second latch which positions the die in released position. The latches and locks are so arranged as to permit of a third position of the locking means so as to permit. of the parts assuming a position permit-ting the removal of the chasers. The invention also contemplates the improvement of the cam means controlling the chasers and of the setting, or adjusting means for adjusting the cams operating on the chasers.
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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