US Patent: 42,489
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Imrovement in Pipe-Wrenches
Improvement in Gas-Tongs
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Patentee:
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| John Charles Johnson (exact or similar names) - Oil City, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Apr. 26, 1864 |
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Patent Pictures:
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John Charles Johnson patent April 26, 1864 |
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Stan Schulz
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Description: |
| The handle, which incorporates a slanted jaw surface, screws through a block which also serves as the hinge point for the hook jaw. This may be the first wrench patent designed for use in the oil industry.
Swinging hook jaw pipe wrenches of this general appearance are known, but in the absence of visible markings, cannot be taken as proof this patent was put into production. J. L. Taylor's Oct. 23, 1883 patent number 287,193 is quite similar, differing only in the appearance of the jaw face on the main shank. |
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