US Patent: 1,881,993
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| Tool attachment device
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Patentee:
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| Ewald A. Arp (exact or similar names) - Minneapolis, MN |
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Patent Dates:
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| Applied: |
Oct. 15, 1930 |
| Granted: |
Oct. 11, 1932 |
| Reissue Information: |
| Reissued as RE18,832 (May 16, 1933) |
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Joel Havens
"Vintage Machinery" entry for Van Norman Machine Tool Co.
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Description: |
| Patent number seen on a Van Norman "Per-Fect-O" 77/S4 boring bar, along with patents 1,868,440, 1,906,241, and 1,954,034.This invention...relates to the art of attaching portable cutting or finishing tools... In its preferred application the device will serve as a machine base for attaching cylinder boring or finishing tools to the engine block of multiple cylinder engines." |
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