US Patent: 2,358,077
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Auger bit
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Patentee:
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Albert C. Koett (exact or similar names) - Cincinnati, OH |
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Patent Dates:
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Applied: |
Apr. 09, 1943 |
Granted: |
Sep. 12, 1944 |
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Kirk Eppler "Vintage Machinery" entry for Kett Tool Co.
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Description: |
This auger bit design is especially intended for drilling larger sizes, greater than one inch, without requiring excessive power. It uses a fine-pitch lead screw, e.g., 32 TPI, and with a relatively long straight section to pull the bit through the hole without stripping. The lead-screw has one or more flutes so that it cuts rather than compresses the wood being drilled. The auger portion is of conventional construction. |
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