US Patent: 1,854,513
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| Reversible Ratchet Wrench
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Patentee:
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| Louis A. Hummel (exact or similar names) - Milwaukee, WI |
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Patent Dates:
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| Applied: |
Mar. 29, 1930 |
| Granted: |
Apr. 19, 1932 |
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Patent Pictures:
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Louis A. Hummel patent April 19, 1932 |
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Stan Schulz
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Description: |
| A unique tensioning spring and rotary pawl which can be positioned to ratchet in either direction are the core of the patent. The patent number appears on reversible ratchet wrenches produced by Snap-On. Some known examples have digits in the patent number transposed in the markings. |
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