US Patent: 104,426
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Pipe-Tongs
Improvement in Wrenches for Screwing and Unscrewing Cylindric Bolts or Tubes
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Patentee:
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| Edward B. Clark (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jun. 21, 1870 |
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Patent Pictures:
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Edward B. Clark Pat. June 21, 1870 |
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Stan Schulz
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Description: |
| The patent is for the eccentric bolt with notched head and spring which forms the pivot for the tongs. Turning the bolt adjusts the size capacity of the tongs.
Cited as "reference" in 3,157,075. |
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