US Patent: 289,396
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| Machine Wrench
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Patentee:
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| John Davis (exact or similar names) - New Bedford, MA |
| USPTO Classifications: |
| 81/56 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 08, 1883 |
| Granted: |
Dec. 04, 1883 |
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Patent Pictures:
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John Davis patent December 4, 1883 |
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Stan Schulz
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Description: |
| The salient features are the sliding socket, the foot lever and linkage to pull the socket onto the nut, and the system of gearing to transfer power from the hand cranks to the socket.
This is a wrench for railroad fish plate bolts. |
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