US Patent: 771,451
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| WRENCH
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Patentee:
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| Robert Ashworth (exact or similar names) - St. Cloud, MN |
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Patent Dates:
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| Applied: |
Jul. 05, 1904 |
| Granted: |
Oct. 04, 1904 |
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Patent Pictures:
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1 | 2
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Patent 771,451 - edited drawing |
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Stan Schulz
SPENCER PAT. 4, 1904 (45spaces)
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Description: |
| Pipe wrench with hook jaw at right angle to the shank, rocking jaw portion on the shank, and positioning spring. There are two positions for the pivot of the the rocking jaw, and the patent includes features of that structure.
A known example includes the patent date in the markings.
Corresponding Canadian patent CA-91,245 was granted January 31,1905. |
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