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US Patent: 2,481,866
Sliding-Jaw, Lever and Rack Actuated Wrench
Patentee:
William Petersen (exact or similar names) - DeWitt, NE

USPTO Classifications:
81/356, 81/358, 81/373, 81/427

Tool Categories:
wrenches : pliers type wrenches : locking pliers
wrenches : wrench components : wrench jaw components

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: May 21, 1945
Granted: Sep. 13, 1949

Patent Pictures:
William Petersen Pat. September 13, 1949
USPTO (New site tip)
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Description:
The sliding jaw and intermediate link with an arc-shaped face (with gear teeth on the matching faces) are an attempt to accomplish parallel jaw movement on a "vise-grip."

The patent cites patent nos. 1,877,642, 2,156,529, 2,280,005, and 2,320,303 as pertinent prior art.

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