US Patent: 13,120
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Wrench
Revolving Head Nut Wrench
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Patentee:
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| Charles B. Bristol (exact or similar names) - Naugatuck, CT |
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Patent Dates:
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| Granted: |
Jun. 26, 1855 |
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Patent Pictures:
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Charles B. Bristol patent June 26, 1855 rotating head nut wrench |
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Stan Schulz
BRISTOL*S ROTARY WRENCH edited from Aug. 25, 1855 SCIENTIFIC AMERICAN (FLICKR)
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Description: |
| The wrench features several open end wrench sizes on a rotating disk, with a locking lever and pin to hold the selected opening in position. The patent received early notice with write-ups in SCIENTIFIC AMERICAN and a comparable British periodical.
Known examples marked only with the patent date. Those examples have a sliding pin engaging holes in the rim of the rotating head -- a much stronger construction than a pin placed close to the pivoting center of the wrench head. |
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