US Patent: 1,020,493
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| Turning Tool
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Patentee:
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| James Hartness (exact or similar names) - Springfield, Windsor County, VT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 16, 1907 |
| Granted: |
Mar. 19, 1912 |
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Joel Havens
"Vintage Machinery" entry for Jones, Lamson & Co.
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Description: |
| Claim:
This invention has relation to tools for cutting metal, as in turning, planing, and similar operations. It consists of a cutter having a comparatively acute edge, mounted to swivel or move freely within certain defined limits so as to allow the pressure of the chip on the top slope of the tool to swing the tool around so as to bring its so-called clearance face flatly against the wall of the metal from which the chip is being taken, thus giving the cutting edge a pressure on both sides instead of the usual one-sided pressure. |
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