US Patent: 1,188,721
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| Pipe Wrench
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Patentee:
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| Frank Bittner (exact or similar names) - Mosinee, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 15, 1915 |
| Granted: |
Jun. 27, 1916 |
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Patent Pictures:
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Frank Bittner patent June 27, 1916 |
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Stan Schulz
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Description: |
| Adjustable jaw "alligator" type wrench. The outer jaw is connected to the main shank by a pivot; there is a compression spring between that jaw and the shank. A screw-adjustable tapered sleeve sets the size of the jaw opening. |
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