US Patent: 616,019
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| Wrench
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Patentee:
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| Charles M. Ryder (exact or similar names) - South Chester, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 19, 1898 |
| Granted: |
Dec. 13, 1898 |
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Patent Pictures:
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Charles M. Ryder patent December 13, 1898 |
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Stan Schulz
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Description: |
| The end sockets and movable piece are shaped and sized so that six pre-determined open end wrench sizes are accomplished depending on the placement of the movable piece. The movable piece is held in place by a spring-loaded catch.
The specifications say the parts can be made by drop forging. |
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