US Patent: 357,986
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Wrench
Improvements in Monkey-Wrenches
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Patent Dates:
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| Applied: |
Apr. 08, 1886 |
| Granted: |
Feb. 15, 1887 |
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Patent Pictures:
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Alfonso D. Gates Pat. February 15, 1887 |
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Description: |
| The handle, stock and fixed jaw are made from a single piece of metal. The movable jaw slides in a slot, and is adjusted by a bolt which extends through the fixed jaw end of the wrench. A retaining piece is inserted in the same opening. Gates' Feb. 12, 1889 patent (no. 397,794) elaborates related manufacturing processes.
Often called the "GATES BULL" which is most likely a mis-reading of "GATES BOLT WRENCH." If anyone has seen a contemporary product ad for this wrench, please contact the steward (use the "Report data errors.." link). |
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