US Patent: 2,705,899
|
| Release Mechanism For A Lever Jaw Wrench
|
|
Patentee:
|
|
| Harold A. Berger (exact or similar names) - Plano, IL |
|
|
Patent Dates:
|
| Applied: |
Oct. 20, 1951 |
| Granted: |
Apr. 12, 1955 |
|
Patent Pictures:
[
1 | 2 | 3
]
|
|
Harold A. Berger patent April 12, 1955 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
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 ["CRAFTSMAN" with "circle I" manufacturer code].
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. |
|
){kind=link}
){kind=link}
){kind=link}