US Patent: 379,519
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| Pipe Wrench
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Patentee:
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| Theodore F. Krueger (exact or similar names) - New York, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 16, 1887 |
| Granted: |
Mar. 13, 1888 |
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Patent Pictures:
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Theodore F. Krueger patent March 13, 1888 |
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Stan Schulz
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Description: |
| A set screw at the base of the movable jaw can be set to limit rocking motion to the range needed to prevent the grip from "locking" on pipe, or opened fully to allow the base to be shifted to adjust for different pipe sizes. A spring at the base of the movable jaw pulls the toothed base of the movable jaw into engagement with rack teeth on the main shank. |
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