US Patent: 741,394
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Wrench
Wrenches For Grasping Pipes, Rods or Nuts
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Patent Dates:
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| Applied: |
Dec. 03, 1902 |
| Granted: |
Oct. 13, 1903 |
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Patent Pictures:
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John Bystrom patent October 13, 1903 |
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Description: |
| A cam-action extension on the handle operates a movable jaw in relation to the fixed jaw. Two alternate jaw forms are shown. The "V" opening alligator wrench form appears with the name "ALLEN WRENCH." Ken Cope's "American Wrench Makers 1830-1930" attributes it to the Norwall Mfg. Co. of Chicago. |
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