US Patent: 262,878
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| Metal Turning Tool
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Patentee:
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| James E. Woodbridge (exact or similar names) - Hartford, Hartford County, CT |
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Patent Dates:
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| Applied: |
Mar. 10, 1882 |
| Granted: |
Aug. 15, 1882 |
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Patent Pictures:
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Joel Havens
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Description: |
| Abstract:
My improvement retates to tools which are intended to be held in the customary manner in the tool-post of a lathe or the toolholder of a planing-machine, and which have commonly been made of a bar of steel of rectangular section, having the cutting part forged of proper form upon its end. The object of my improvement is to provide a tool which can be used without reforging as worn, and be sharpened simply by grinding, the cutting part of which can be made of the best material without requiring the great waste of steel for the body or shank us ordinarily constructed. It also has for its object the construction of a reversible tool, both ends of which can be shaped and sharpened; and it also has for its object the reduction in quantity of the best steel required for the cutting-edges by making the cutting part separable and exchangeable, and by constructing the holding part so as to support and stiffen the cutting-edge in a lateral direction.
Claim:
The cap E, made convex transversely on its bearing-surface, and resting on the surface of the cutter along a horizontal middle line only of said cutter, in order to avoid injury to its corners. |
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