US Patent: 1,560,462
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| Self Opening and Closing Threading Die Holder
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Patentee:
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| Rudolph A. Boehm (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: |
Sep. 01, 1923 |
| Granted: |
Nov. 03, 1925 |
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Joel Havens
"Vintage Machinery" entry for Rickert-Shafer Co.
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Description: |
| Claim:
In a device of the class described, a shank head having a radially slidable chaser mounted therein, a rotatable shaft mounted in said head, adapted to be rotated to engage said chaser to retain it in said head, a spring pressed ring longitudinally slidable on said head, coacting means in said ring and on said rotatable shaft adapted to rotate said shaft, spring pressed latch mechanism mounted in said ring, and stop mechanism adapted to be engaged by said latch mechanism to limit the longitudinal movement of said ring on said head. |
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