US Patent: 379,627
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Wrench
Wrench Applied to Jack-Screws
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Patentee:
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| George M. Allen (exact or similar names) - Cherryfield, ME |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 02, 1887 |
| Granted: |
Mar. 20, 1888 |
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Patent Pictures:
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George M. Allen patent March 20, 1888 |
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Stan Schulz
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Description: |
| There are two sets of ratchet wheels with the teeth facing opposite, with a smooth bearing surface between them.
The wrench, or handle, has a corresponding semi-circular bearing surface, and a spring-loaded pulling hook. It can be flipped over to reverse direction. This is a specialized ratchet form of hook spanner. |
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