US Patent: 539,441
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| Wrench
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Patentee:
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| Johannes Theodor Pedersen (exact or similar names) - New York, NY |
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Patent Dates:
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| Applied: |
Oct. 23, 1894 |
| Granted: |
May 21, 1895 |
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Patent Pictures:
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Johannes T. Pedersen Pat. May 21, 1895 |
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Stan Schulz
PEDERSEN "Universal" WRENCH 1906 (FLICKR)
PEDERSEN set (45spaces)
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Description: |
| Improvement on Pedersen's January 30, 1894 pat. no. 513,619. The heads have grooved sides with teeth, and the end of the handle has a curved slot with matching teeth. This allows the handle to be adjusted in relation to the open end.
A 1906 "write-up" describes six different size heads for one handle. A 1907 product announcement gives the brand name as "FERRET." |
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