US Patent: 1,396,861
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| Valve Grinder
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Patentee:
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| William J. Lucks (exact or similar names) - Columbus, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 12, 1921 |
| Granted: |
Nov. 15, 1921 |
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Patent Pictures:
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William J. Lucks patent Nov. 15, 1921 |
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Stan Schulz
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Description: |
| Rotary motion generated by a "spiral twist" wire structure. Internal springs work to retain steady pressure on the valve, while returning the handle to initial position on release of downward pressure. |
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