US Patent: 6,210
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| Sliding Wrench
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Patentee:
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| Dexter H. Chamberlain (exact or similar names) - Boston, MA |
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Patent Dates:
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| Applied: |
Jul. 20, 1848 |
| Granted: |
Mar. 20, 1849 |
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Patent Pictures:
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Dexter H. Chamberlain patent March 20, 1849, with 12 inch example from Frank Kingsbury collection |
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Stan Schulz
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Description: |
| Straps that extend along side the main bar of an adjustable nut wrench have teeth which engage screw threads cut inside the surface of a rotating cylindrical handle. No screw threads or teeth are exposed. A locking ring fixed to the shank and a screw-on end cap hold the rotating handle in place. |
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