US Patent: 195,173
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| Monkey-Wrenches
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Patentees:
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| Albert A. Sanborn (exact or similar names) - Newark, NJ |
| Charles Burroughs (exact or similar names) - Newark, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 15, 1877 |
| Granted: |
Sep. 11, 1877 |
| Reissue Information: |
| Reissued as RE8,005 (Dec. 18, 1877) |
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Patent Pictures:
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Albert A. Sanborn and Charles Burroughs patent Sept. 11, 1877 |
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Stan Schulz
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Description: |
| The adjustment is a "mutilated male screw" with a thumb-piece that engages a "mutilated female screw" cut in the main shank.
The ends of the interrupted threads are tapered to facilitate their engagement, and the pitch of the threads tightens the grip of the jaws. |
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