US Patent: 463,921
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| Pliers
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Patentee:
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| Samuel Rufer (exact or similar names) - New Philadelphia, OH |
| USPTO Classifications: |
| 81/10 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 11, 1891 |
| Granted: |
Nov. 24, 1891 |
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Patent Pictures:
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Samuel Rufer patent November 24, 1891 |
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Stan Schulz
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Description: |
| The purpose of this tongs is to mutilate threads of bolts after the nuts have been tightened, so as to keep the nuts from working loose.
Corresponding Canadian patent no. CA-41,497 was issued January 11, 1893. |
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