US Patent: 678,959
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| Pipe-Wrench
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Patentee:
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| Joseph P. Lavigne (exact or similar names) - New Haven, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 19, 1901 |
| Granted: |
Jul. 23, 1901 |
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Patent Pictures:
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patent 678,959 - edited image |
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Stan Schulz
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Description: |
| "My invention relates to an adjustable pipe wrench; and its object is to provide a simple compact device that can be instantly adjusted to any-sized pipe within its scope and with one hand of the operator, if desired, instantaneous in its action of gripping the pipe, and readily released therefrom."
A spring loaded pawl provides the latch for size adjustment. |
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