US Patent: 2,487,994
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| Lathe or other turning machines
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Patentee:
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| Arthur Travena (exact or similar names) - Birmingham, England |
| USPTO Classifications: |
| 82/19 |
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Patent Dates:
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| Applied: |
Dec. 08, 1945 |
| Granted: |
Nov. 15, 1949 |
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Jeff Joslin
Vintage Machinery entry for Thomas Chatwin
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Description: |
| The invention is a lathe attachment for making small parts that have polygonal features such as hex heads. It was manufactured as the "Chatwin Patent Polygon Tool Box". |
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