US Patent: 2,705,899
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| Release Mechanism For A Lever Jaw Wrench
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Patentee:
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| Harold A. Berger (exact or similar names) - Plano, IL |
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Patent Dates:
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| Applied: |
Oct. 20, 1951 |
| Granted: |
Apr. 12, 1955 |
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Patent Pictures:
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Harold A. Berger patent April 12, 1955 |
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Stan Schulz
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Description: |
| The focus of the patent is the lock release which is a hinged segment of the lever handle. The specifications claim this structure generates sufficient leverage to overcome the locking force of the "over center" link.
A 1954 METCOID (Metal Engineering Co.) ad for their LEVER JAW E-Z ACTION locking plier wrench shows this style of lock release, but cites patent no. 2,592,807.
One known example is marked "GREAT GRIP - EASY ACTION / PAT. NO. 2705899." The patent also was used for early 1950s CRAFTSMAN plier wrenches with "EASY OPEN" handles.
The specifications note patent nos. 2,443,153, 2,532,659, 2,543,922, 2,589,511, 2,590,750, 2,592,803, and 2,604,803 as references. |
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