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 |
Patent Pictures:
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Campbell A. McIntosh patent June 30, 1891 |
USPTO (New site tip) Google Patents
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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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