US Patent: 207,500
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Combined Tool
Combined Wrench and Tool for Locking Nuts in Position Upon Bolts
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Patentee:
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| Peter Campbell (exact or similar names) - Carrollton, PA |
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Patent Dates:
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| Applied: |
Jan. 23, 1878 |
| Granted: |
Aug. 27, 1878 |
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Patent Pictures:
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Peter Campbell Pat. Aug. 27, 1878 |
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Stan Schulz
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Description: |
| The tool combines an adjustable open-end wrench and a crimper tool to damage bolt threads to prevent nuts from vibrating loose and falling off.
Markings on a known example include "CAMPBELL PATENT AUG 27, 78" |
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