US Patent: 421,688
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Pipe Wrench
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Patentee:
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Thomas White Fisher (exact or similar names) - Helena, MT |
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Patent Dates:
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Applied: |
Mar. 18, 1889 |
Granted: |
Feb. 18, 1890 |
Patent Pictures:
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Thomas White Fisher patent February 18, 1890 |
USPTO (New site tip) Google Patents
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Stan Schulz
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Description: |
Major adjustment accomplished by pawl in movable jaw, final adjustment and gripping action by the rocking action of the handle moving the shank portion containing the rack teeth.
Ken Cope's "American Wrench Makers 1830-1930" notes a new product announcement in "Scientific American," and a 12-inch example is known.
Munn & Co.- patent attorneys; CA-33,864 and GB-189002639 are corresponding "foreign" patents.
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