US Patent: 2,053,033
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| Adjustable Wrench
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Patentee:
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| Arthur Pearson Ibbott (exact or similar names) - Oxhey, Hertfordshire England |
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Patent Dates:
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| Applied: |
Mar. 11, 1935 |
| Granted: |
Sep. 01, 1936 |
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Patent Pictures:
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Arthur Pearson Ibbott Pat. Sept. 1, 1936 |
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Stan Schulz
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Description: |
| Most of the specifications are a detailed discussion of the relationship between the pitch of the cam, its ability to hold the adjustment, the size of the center pivot bolt, and the range of jaw settings. A friction spring holds the cam's adjustment against incidental movement.
This is the U.S. equivalent to the cam-adjust nut wrench marked *CHARLES RICHARDS & SONS LTD. DARLSTON, ENGLAND // BURSTON 1-26-32 BRITISH PAT 384468* [GB-384468].
Although a cam-adjust wrench seems unusual, an earlier U.S. patent [734,329] used a similar shaped cam. That wrench is known to have been produced. |
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