US Patent: 240,882
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| Lead Seal Press
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Patentee:
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| Joseph W. Calef (exact or similar names) - North Easton, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 05, 1881 |
| Granted: |
May 03, 1881 |
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Patent Pictures:
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Joseph W. Calef patent May 3, 1881 |
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Stan Schulz
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Description: |
| The sliding jaw is actuated by a lobe on the movable handle. The design is reminiscent of Calef's self-adjusting nut wrench (pat. no. 226,490). Calef proposed other applications for the sliding jaw in patents for punches (pat. no. 240,883) and shears (pat. no. 240,884). |
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