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US Patent: 2,574,676
Toggle Actuated, Plier-Type Wrench
Glenn J. Waterbury - Van Nuys, CA

USPTO Classifications:
81/369, 81/380

Tool Categories:
wrenches : pliers type wrenches : locking pliers


Not known to have been produced

none listed

Patent Dates:
Applied: Nov. 22, 1946
Granted: Nov. 13, 1951

Reissue Information:
Reissued as RE24,465 (Apr. 29, 1958)

Patent Pictures: [ 1 | 2 ]
Glenn J. Waterbury patent November 13, 1951
USPTO pdf tiff
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George F. Smith - patent attorney

The release lever presses against the lever handle adjacent to the "over center" pivot point of the toggle linkage. Press the end of the release lever toward the size adjusting screw to release the grip. This facilitates one-handed operation.

The patent cites patent nos. 952,079, 1,489,458, 2,201,918, 2,443,153, 2,462,709, 2,500,261, 2,514,130, and 2,523,385 as references.

Lock releases corresponding to this patent are found on CRAFTSMAN (tm) locking pliers. Some of those are marked with reissue patent no. RE24,465.

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