US Patent: 769,605
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| Wrench
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Patentees:
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| Robert A. Hammond (exact or similar names) - Sandwich, MA |
| Frederick E. Walden (exact or similar names) - Worcester, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 18, 1903 |
| Granted: |
Sep. 06, 1904 |
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Patent Pictures:
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Robert A. Hammond & Frederick E. Walden patent Sept. 6, 1904 |
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Stan Schulz
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Description: |
| Quick and screw adjustment. The "spindle" with interrupted threads is limited to a quarter turn by the eccentric shape of the thumb wheel, which will bind at that state of its rotation. Compare this to Walden's June 7, 1904 patent 761,798. |
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