US Patent: 15,862
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| Vise
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Patentee:
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| Caleb C. Walworth (exact or similar names) - Boston, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Oct. 07, 1856 |
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Jeff Joslin
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Description: |
| "The nature of my invention consists in certain devices whereby two vises are so arranged as to revolve about a common center, and which many be locked firmly in any determined position... and which I call a 'compound revolving vise.' The particular use to which I have applied my invention is to hold gas pipe fittings for the purpose of tapping, screwing and boring them."According to the 1873 "Subject-matter index of patents for inventions issued by the United States Patent Office", this patent was granted an extension. |
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