US Patent: 2,152,563
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| Slip Locking Pivot
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Patentees:
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| Robert W. Palmer (exact or similar names) - Meadville, PA |
| John P. Palmer (exact or similar names) - Meadville, PA |
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Patent Dates:
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| Applied: |
Jun. 01, 1937 |
| Granted: |
Mar. 28, 1939 |
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Patent Pictures:
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Robert W. Palmer and John P. Palmer patent March 28, 1939 |
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Stan Schulz
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Description: |
| The patent is a slip joint in a pair of pliers. The pivot stud is a rounded rectangle, with the narrow dimension corresponding to the slot in the opposite handle. The construction is claimed to be more rigid and less likely to slip or rack than other slip-joint pliers.
A water pump pliers marked PALMER BROTHERS WELLoct U.S. Pat. 2152563 uses this patent.
The patent number also appears on the PALMER CHAIN WRENCH MEADVILLE PA, although the patent has no obvious connection with a chain wrench other than the name of the patentee. |
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