US Patent: 631,013
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| Vise
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Patentee:
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| Charles J. Jackson (exact or similar names) - Erie, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 10, 1898 |
| Granted: |
Aug. 15, 1899 |
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Carl Matthews
"Vintage Machinery" entry for Jackson Vise & Tool Co.
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Description: |
| Improvements to the vise of patent 563,040 to address a problem where the steel strips forming the jaws could loosen and fall out: this patent provides notches on the steel strips plus matching lugs in the jaw sockets, in order to hold the strips in place. |
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