US Patent: 455,238
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| Wrench
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Patentee:
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| Campbell A. McIntosh (exact or similar names) - Vancouver, BC Canada |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 18, 1890 |
| Granted: |
Jun. 30, 1891 |
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Patent Pictures:
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Campbell A. McIntosh patent June 30, 1891 |
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Stan Schulz
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Description: |
| An adjustable jaw reversible ratchet. The adjusting worm drives a hollow gear which engages two parallel racks with jaws set at an oblique angle.
It would be interesting to see a prototype and find out what the range of adjustment for the jaws turns out to be. The parallel Canadian patent is no. CA-40,796 issued October 24, 1892. |
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