US Patent: 91,503
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| Improved Process for Making Augers and Boring-Bits
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Patentee:
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| Cornelius Whitehouse (exact or similar names) - Bridgtown/Cannock, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jun. 15, 1869 |
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Patent Pictures:
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1 | 2
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Jeff Joslin (dm)
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Description: |
| Focus of this patent is on a process of annealing or decarburizing the bits, after removal from the mold, prior to undertaking the remainder of the manufacturing process. The bits are then rehardened and tempered or case hardened at the end of the process. |
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