US Patent: 407,851
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Blacksmith's Mandrel
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Patentee:
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James W. Cheney (exact or similar names) - Indianapolis, IN |
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Patent Dates:
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Applied: |
May 13, 1889 |
Granted: |
Jul. 30, 1889 |
Patent Pictures:
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James W. Cheney patent July 30, 1889 |
USPTO (New site tip) Google Patents
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Stan Schulz
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Description: |
This cone mandrel is hollow with strengthening webs at intervals through its height, and a groove which opens into the interior. |
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