US Patent: 479,698
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| Wrench
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Patentee:
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| Henry Bornstein (exact or similar names) - Boston, MA |
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Patent Dates:
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| Applied: |
Jan. 23, 1892 |
| Granted: |
Jul. 26, 1892 |
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Patent Pictures:
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Henry Bornstein patent July 26, 1892 |
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Stan Schulz
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Description: |
| Turning the handle produces double speed adjustment as the inner portion of the lower jaw and the shank of the outer jaw are both threaded.
Some examples marked with the manufacturer name, others marked 'WORLD'S EXPOSITION, CHICAGO, 1893' plus "Patented July 26, 1892." This style BORNSTEIN wrench appears in a 1913 item about wrenches produced by Bornstein at Ipswich, Mass.
Corresponding Canadian patent CA-40,508 was granted Oct. 1, 1892. |
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