US Patent: 157,441
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| Improvement in Pipe-Tongs
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Patentee:
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| Jonathan D. Davis (exact or similar names) - Fitchburg, MA |
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Patent Dates:
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| Applied: |
Sep. 15, 1874 |
| Granted: |
Dec. 08, 1874 |
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Patent Pictures:
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Jonathan D. Davis Pat. December 8, 1874 |
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Stan Schulz
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Description: |
| The tongs uses a unique pivot bolt with a shank on one end of an oval base, in conjunction with an oval slot in the shank of the "hooked" jaw. By removing and reversing the bolt, the tongs has capacity for twice the range of pipe sizes.
A known example is marked DAVIS PIPE TONGS PAT'D DEC 8, 1874 FITCHBURG MASS. |
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