US Patent: 956,822
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| Grinding Tool
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Patentee:
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| Millard F. Parsons (exact or similar names) - Kansas City, KS |
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Patent Dates:
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| Applied: |
Dec. 03, 1909 |
| Granted: |
May 03, 1910 |
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Patent Pictures:
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Millard F. Parsons patent May 3, 1910 |
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Stan Schulz
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Description: |
| Complicated internal gearing including "sun and planet" impart progressive forward motion combined with oscillating rotary motion to the driven member.
The patent describes the tool in alternate forms as an add-on for a breast drill, or as a stand-alone crank driven tool.
Produced as the "PERFECT PARSONS VALVE GRINDER." |
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