US Patent: 1,326,190
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| Operating Means For Valve Grinding Tools
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Patentee:
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| Alfred D. Goodwin (exact or similar names) - Ripon, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 18, 1919 |
| Granted: |
Dec. 30, 1919 |
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Patent Pictures:
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Alfred D. Goodwin patent Dec. 30, 1919 |
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Stan Schulz
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Description: |
| The contact between the driving and driven members is "friction." The driving cams operate on opposite sides of the driven member to generate oscillating rotary motion. A spring in the shaft holds the friction surfaces together. |
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