US Patent: 1,591,400
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| Valve Grinding Tool
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Patentee:
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| John Orawiec (exact or similar names) - Chicago, IL |
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Patent Dates:
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| Applied: |
Apr. 20, 1925 |
| Granted: |
Jul. 06, 1926 |
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Patent Pictures:
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John Orawiec patent July 6, 1926 |
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Stan Schulz
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Description: |
| The twist on the shaft reverses to impart oscillating rotation with each downward stroke. The adjustable base and anti-friction rollers in the slider help control downward pressure. A known example is marked in part, "JOHN'S MECHANICAL PRODUCTS - PAT JULY 2, 1926 - OTHER PATENTS - CHICAGO" |
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