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 |
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." A 1967 HARDWARE AGE shows this as a product of Great Neck Saw Manufacturers, Mineola, NY. 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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