US Patent: 205,416
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| Improvement in Grinding-Machines
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Patentees:
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| Francis D. Randall (exact or similar names) - Waupaca, WI |
| Lester D. Dana (exact or similar names) - Waupaca, WI |
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Patent Dates:
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| Applied: |
May 14, 1878 |
| Granted: |
Jun. 25, 1878 |
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Patent Pictures:
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Joel Havens
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Description: |
| Van Santwood & Hauff - patent attorneys
This invention relates to improvements in that class of tool-grinding machines in which are employed a grindstone, a vertical oscillating standard, and a toolholder or rest, attached to the upper end-of said oscillating standard; and our invention consists in the combination, with a vertical standard, pivoted at its lower end to the frame of the grindstone, and adapted to have an oscillating motion imparted to it, of a tool-rest constructed of two bars arranged at right angles to each other, one of which is journaled at its ends in a bracket attached to the oscillating standard, and the other bar having its rear end arranged in a cylindrical opening in the first-mentioned bar, whereby the latter bar enables the tool to be raised from the grindstone, and the other is adapted to rotate for presenting the tool at different oblique angles to the grinding-stone. |
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