US Patent: 1,900,112
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| Grinding machine
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Patentee:
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| Joseph H. Hoern (exact or similar names) - Saginaw, MI |
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Patent Dates:
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| Applied: |
Aug. 31, 1929 |
| Granted: |
Mar. 07, 1933 |
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Jeff Joslin
Vintage Machinery entry for Hoern & Dilts, Inc.
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Description: |
| "This invention relates to machines for grinding the outside diameter of the head of headed articles such as poppet valves for internal combustion engines, and what is known as the 'mushroom' type of valve tappet, and other articles of similar nature." |
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