US Patent: 992,126
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| Wrench
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Patentee:
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| Frederick Hachmann (exact or similar names) - Minneapolis, MN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 23, 1909 |
| Granted: |
May 09, 1911 |
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Patent Pictures:
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Patent 992,146 - edited drawing |
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Stan Schulz
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Description: |
| A complicated arrangement of handle with internal quarter threads, nut with internal quarter threads and other features, and internal tension spring combine to form "Instantaneous" adjustment for a "B&C" type combination nut and pipe wrench.
Parallel patent 992,127 provides an analogous adjustment structure for a "Stillson" style pipe wrench. |
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