US Patent: 1,565,338
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| Wrench
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Patentee:
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| William O. Thewes (exact or similar names) - North Ridgeville, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 20, 1923 |
| Granted: |
Dec. 15, 1925 |
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Patent Pictures:
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Patent 1,565,338 -- edited from PATENT GAZETTE |
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Stan Schulz
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Description: |
| Patent includes details of a friction-reducing ball bearing which acts as the bearing point for the movable jaw, a spring pressed "shoe" holding the adjustable jaw in contact with the ball bearing, and details of the gripping teeth on the fixed and adjustable jaws.
This patent is not noted in "official" histories of the evolution of RIDGID pipe wrenches -- 1,549,164, 1,552,091, 1,727,623, etc. |
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